Statewide smoke update: clearing in Western WA today, smoke impacts in Central and Eastern WA continue this week

Over the weekend, nearly every part of the state experienced smoke impacts, with many air quality monitors observing unhealthy or worse conditions. Sunday's satellite image shows the swath of smoke across the state:

20 Aug 2023 19:01Z - NOAA/NESDIS/STAR GOES-West

Easterly winds plus smoke from both local and Canadian fires led to the poor air quality we observed over the weekend. Two fires in the Spokane area (Gray Fire and Oregon Road Fire) led to hazardous air quality in Spokane.

Outlook:

Western WA

We're already seeing improvements in western Washington with the arrival of westerly onshore winds. The smoke will likely linger through today but skies should be clear by tomorrow morning. Air Quality Alerts are in place through midnight tonight for the following counties: Island, King, Pierce, San Juan, Skagit, Snohomish, Whatcom. An Air Quality Alert is in effect until 5pm today for Clallam County.

Central and Eastern WA

Air quality will also slightly improve today in Central and Eastern Washington with southeast winds, although there is uncertainty in how much relief Central Washington will experience. Forecasted southwesterly winds tonight and tomorrow will increase smoke in the region. Air Quality Alerts comprise all Central and Eastern WA counties, and are extended through noon on Wednesday. 

Expect significant clearing on Wednesday.  Unfortunately, forecasted northerly winds could bring Canadian smoke to Northern Washington on Thursday and Friday. We'll update the blog as necessary.

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We observed interesting smoke dynamics in the atmosphere on Saturday as the smoke was transported higher up in the atmosphere but then mixed down to the surface. Ecology's air quality sensor at the Mt. Rainier visitor center (elevation 5400') observed elevated PM2.5 concentrations 3 hours before the closest purple air sensor at Longmire (elevation 2700') and 8 hours before the purple air sensor in Ashford (elevation 1700').

Spokane County - State of Emergency

Spokane County is under a State of Emergency due to two large fires that have each burned approximately 10,000 acres: the Oregon Road Fire near Elk and the Gray Fire in Medical Lake.  Many homes and structures have been lost and the fires are still very active.  Spokane Emergency Management has information on evacuations and other important notices.  Evacuation Shelters are available at Riverside High School and Spokane Falls Community College.

Current air quality is very unhealthy to hazardous due to both local and regional fires.  Continued fire activity and region-wide smoke will continue to cause poor air quality until at least Monday.  However, the remnants of Hurricane Hilary will likely push welcome moisture into the region late Monday and Tuesday, which will help clear the smoke and hopefully help with fire suppression.  

When air quality is very unhealthy or worse, everyone should reduce exposure. Stay inside and filter indoor air to keep it cleaner. Go elsewhere for cleaner air, if needed. See the Health Information Tab on this blog for more information about how you can protect yourself from wildfire smoke.  See the Local Smoke Outlooks for detailed forecasts in your area. 

Fires around Spokane with recent satellite hot-spot detects in orange (8/19/2023 - Source: WatchDuty)

Wildfire smoke impacts in Western Washington this weekend

Recently a westerly wind pattern has been blowing wildfire smoke to the east and keeping it out of Western Washington.  However, winds will shift overnight tonight to easterly – funneling smoke from fires in the Cascades and southern British Columbia into the Puget Sound region.  All of Western Washington may be impacted – with the possible exception of the Olympics/coast.

Forecasted Unhealthy air quality for 5am Sunday

The air quality index is expected to reach Moderate or Unhealthy For Sensitive Groups on Saturday, increasing throughout the day.  Northern counties will be affected first as smoke travels southward.  Continued smoke movement on Sunday could lead to Unhealthy or worse air quality.  Light westerly winds on Monday and stronger westerly winds on Tuesday should help clear out the smoke.

An Air Quality Alert is being issued for the following Western WA counties, beginning Saturday at 9am and continuing through Monday at noon: Clallam, Clark, Cowlitz, Island, Jefferson, King, Kitsap, Lewis, Mason, Pierce, San Juan, Skagit, Skamania, Snohomish, Thurston, Wahkiakum, and Whatcom. 

While air quality in Central and Eastern Washington has improved today, northerly winds this afternoon will lead to declining air quality conditions that will continue through the weekend. Air quality alerts remain in place until Monday morning.

Limit your exposure by staying indoors, keeping your windows closed, and using air purifiers.  Track the current air quality on the smoke map at the top of this site.

Smoke impacts in Central and Eastern WA through the weekend

Smoke from local and Canadian fires is impacting air quality in Central and Eastern Washington, as seen on this morning's satellite image:

GOES-West 17Aug 2023 15:31Z

Conditions will improve somewhat tomorrow as westerly winds push the smoke away, but relief will be short-lived as the winds shift to bring smoke back into the region Saturday evening. It's likely to be smoky in most of Central and Eastern Washington through the weekend, ranging from Moderate to Unhealthy conditions. 

There is an active Air Quality Alert for Central and Eastern Washington counties that extends through the weekend until Monday morning.

Critical fire weather continues across the state in this hot and dry weather. Active fire detections are shown in the map below.

We're also keeping an eye on the forecast for western Washington this weekend and will update the blog as needed. Easterly flow could transport smoke to the area, but as of now it's uncertain how much smoke will be transported.

As always, check out the smoke forecast and current air quality conditions in the map at the top of this page, and review DOH's tips for finding cleaner indoor air. 

It’s that time of year again to find cleaner indoor air

Wildfire smoke is increasing in our state, which means we need to start taking steps to reduce our exposure and protect ourselves. Breathing in wildfire smoke can cause health problems, even if you are healthy.

• Limit duration and intensity of outside physical activity. 
• Stay inside with cleaner indoor air: 
• Close windows and doors, unless it is too hot to maintain safe temperatures. 
• Don’t add to indoor air pollution by smoking cigarettes or burning candles inside. 
• Filter indoor air through an HVAC system, HEPA portable air cleaner, or a DIY box fan filter. 
• Set air conditioners to re-circulate. 
• Seek clean air elsewhere if it is not possible to keep the air in your home clean or cool. 
• If you must be outside, wear a properly fitted, NIOSH-approved particulate respirator, such as an N95 mask. 

For more information see the Health Information Tab or visit WA DOH’s Smoke from Fires webpage. 

Critical Fire Weather and Active Fires in North Cascades Increase Smoke Production this Week

Westside Smoke Relief Tomorrow, Eastside Impacts Increase

Unfortunately, our hot and dry weather has led to increased activity on several fires in the Northern Cascades. Remote weather stations near the Sourdough Fire topped out at 100 F yesterday afternoon and the heat is only expected to increase today. Critical fire weather will continue for the next few days. Hot and dry conditions will persist in the interior through Friday, while strong westerly winds will impact the Cascades this afternoon and all of Eastern Washington on Thursday. With all these threats, resources are spread thin, so practice fire safety to keep the workload on our firefighting teams as low as possible!

Currently most smoke in Washington is coming from the Sourdough Fire and the Dome Peak Fire, which is located in mountainous terrain north of Glacier Peak. Dome Peak was ignited in the same lightning storm as Sourdough and remained quiet until the hot weather this week allowed it to start flaming. There is also some smoke entering the state from fires in southern British Columbia and the Idaho panhandle. An Air Quality Alert is being issued for Chelan and Okanogan counties that will extend through Friday.

The Sourdough Fire continues to burn in heavy timber along State Route 20 with significant growth potential forecasted for the rest of the week. The Dome Peak Fire northeast of Glacier Peak recently sparked up and is showing no signs of calming down through the rest of the week. Both fires are located near the Cascade Crest, so the wind direction will be very important in determining which side of the mountains see the most smoke.

Today will be the last day of significant smoke impacts for most of Western Washington. Later today, onshore flow will resume which will push most smoke east of the Cascade crest. This will cause smoke to flow down mountain valleys on the Eastern Slopes such as the Methow and down Lake Chelan. The Methow Valley will be an area of concern for the rest of the week with up to Unhealthy air quality through Friday. Areas near existing fires like Newhalem and Stehekin will see Very Unhealthy to Hazardous conditions, especially at night, when smoke gets trapped near the surface. Chelan could see up to Unhealthy for Sensitive Groups for the rest of the week as well, while Moderate impacts are expected for Waterville, Darrington, and Concrete. Below is a depiction of smoke transport for the next 24-72 hrs.

Another concern is northerly winds through the Okanogan Valley channeling smoke from British Columbia towards the Columbia Basin overnight tonight and tomorrow. Similarly, smoke from the Ridge Creek fire in Idaho may be channeled west towards Spokane. These events will result in Moderate air quality for the Omak and Spokane areas through Wednesday, though impacts should subside for Thursday and Friday.

With mid and upper-level winds out of the west for the remainder of the week, elevated smoke will be visible across most of eastern Washington. As always, critical fire weather greatly increases the likelihood of new fires popping up statewide. If any new fires do crop up, smoke will be pushed east, so Eastern Washington will be primarily impacted. 

Jared McGlothlin

Wildfire Meteorology

Washington Department of Natural Resources

Sourdough Fire Rises After Rainfall; Smoke Impacts Focused on Westside through Tuesday

 A critical week of fire weather lies ahead 

After widespread wetting rains fell across Washington early last week, it was discouraging to see the Sourdough Fire start producing smoke again yesterday. Last Monday was a great reminder that the damp greyness of Autumn is on the horizon, but fire season is still upon us and will be for the better part of the next month and a half. A mid-August heatwave begins today across the Pacific Northwest, with very hot and dry conditions expected through the workweek. The Northwest Coordination Center raised their preparedness level to 4 (out of 5) this weekend, indicating that an increase in fire starts is likely and that firefighting resources are starting to be stretched a bit too thin. It is crucial that we all work together to limit any new sparks this week! 

Fire danger will evolve in two stages this week: First, areas west of the Cascades will see a peak in fire danger Sunday-Wednesday morning. After Wednesday, onshore flow will return west of the Cascades and critical fire danger will shift east of the Cascades. This also mirrors smoke impacts for the week. Red Flag Warnings are flying for the west slopes of the Cascades through at least Monday evening. 

As of Sunday morning, the only fire-of-concern from a smoke perspective in Washington is the Sourdough Fire burning above Diablo Lake in the North Cascades. 

Prevailing winds through Tuesday evening will be out of the northeast across the Cascades and out of the north through the Puget Lowlands. The poorest air quality will be in the morning hours in the immediate vicinity of the fire and southeastward through the Skagit Valley. AQI values each morning will range from Very Unhealthy near the fire in Newhalem to Unhealthy for Sensitive Groups in Marblemount to Moderate in Concrete. 

Ceilometer data from Puget Sound Clean Air shows that the smoke exiting the Skagit Valley and spreading to the east and south in the Puget Lowlands is primarily above 3,000 feet, which will limit air quality concerns to Moderate in the I-5 corridor north of Seattle, though smoke will likely be visible in Whatcom, Skagit, and Snohomish counties.

During the afternoon hours when the fire is producing the most smoke, mid-level winds will transport elevated smoke southwestward toward Lake Chelan and the Methow Valley. Through Tuesday evening, the most significant impacts east of the fire will be for Stehekin, where AQ is likely to reach Unhealthy for Sensitive Groups. Two fires burning just north of the Canadian border will transport primarily elevated smoke across far NE Okanogan County and the Methow Valley through the middle of the week. 

The model image below shows total smoke transport through Sunday evening, with similar conditions expected through Tuesday evening. 

Unfortunately, with critical fire expected west of the Cascades through the midweek period, new fire starts are also likely. Smoke from any new fires will generally be transported southward and westward across western Washington. By Wednesday morning, westerly winds will return across Washington and smoke concerns will shift to eastern Washington. The Methow Valley will begin to see more significant smoke impacts from the Sourdough Fire by Tuesday night, with westerly winds continuing into the late-week period. There will be an update to the Smoke Blog on Tuesday to provide more details and decipher impacts from any new fire starts! 

Matthew Dehr

Wildfire Meteorologist

Washington DNR 

Monday Update: Smoke impacts in Central and Eastern WA; cleaner air expected mid-week

The Sourdough Fire in the North Cascades has grown to 1,400 acres and continues to impact air quality closest to the fire as well as in Chelan and Okanogan Counties. An Air Resource Advisor (ARA) has been assigned to the fire--please see the local Smoke Outlooks for their specific forecasts.

Over the weekend and into this morning, air monitoring sites in Chelan and Okanogan Counties observed smoke impacts corresponding to moderate and unhealthy for sensitive groups air quality levels. 

Air quality will continue to improve today and tomorrow as smoke production from the Sourdough Fire continues to decrease. Potential rain will also help to dampen any fire growth. Areas closest to the fire (Ross and Diablo Lakes) will continue to observe smoke impacts corresponding to moderate to unhealthy for sensitive groups air quality levels. In the Methow Valley, moderate air quality levels are expected to continue, with the potential for air quality to intermittently reach unhealthy for sensitive groups tonight and tomorrow night. Westerly winds will keep smoke away from the western slopes of the cascades. 

As for the rest of the state, moderate smoke impacts across Eastern Washington from fires in Idaho, Montana, and Canada will continue through tomorrow. Smaller local fires (such as the Agency Butte Fire east of Nespelem in Okanogan County) could contribute to deteriorating air quality conditions closest to the fires, but smoke production will be mitigated by today's rain. Shifting winds on Wednesday will lead to improvements and cleaner air as westerly winds push smoke out of the region.

A reminder to keep an eye on the 5-day smoke forecast and current air quality conditions at the map at the top of this page, and we'll update the blog as needed.

Wildfire Smoke Impacts Expected across Washington through this Weekend

Local fires will be the primary source of surface smoke

Upper level smoke from fires in Idaho, Montana, and Canada will be transported toward Washington, as well

The Eagle Bluff Fire burning near the Canadian border in the Okanogan Valley has been consistently producing smoke since its ignition last weekend, but the Sourdough Fire burning above Diablo Lake has increased smoke production remarkably in the past 24 hours. Below you can see the location and current smoke plumes of those fires, as of Thursday, 3 August. Additionally, the Margarita Fire, located on the Pacific Coast near Moclips, produced smoke impacts for the south Puget Sound yesterday and may continue to smolder through Friday. Minor smoke impacts associated with that fire are likely to be contained near the coast.

The Sourdough Fire, in particular, will produce the most substantial smoke impacts over the next 24-48 hours in Washington. Winds will be out of the west during the day, blowing smoke toward the Okanogan Highlands and the Methow Valley, while at night, winds will reverse and blow smoke easterly into the Skagit River Valley toward Marblemount and Rockport. AQI values in the Orange/Unhealthy for Sensitive Groups range are possible at these locations, with further reduction in AQI possible near Diablo Lake. 

WSDOT is asking the public to not stop along SR-20 to take photos of the fire.

Sourdough Fire Update: Our maintenance crews took this photo of the wildfire burning near Diablo Dam in Whatcom County.
📋More info: https://t.co/3vJJPWXty6
⛔️Do not pull over to take photos or fly drones.
🚧Obey all road signs
➡️ Follow @NCascadesNPS https://t.co/TWNHLAxJiL pic.twitter.com/mQUyCf7649

— WSDOT North (@wsdot_north) August 3, 2023

Fortunately, cooler weather and precipitation chances are in the forecast for this weekend. The impact of smoke from the Eagle Bluff Fire has already been dramatically reduced by fire suppression efforts, and the upcoming weather will tamp down smoke production from the Sourdough Fire. Along with the precipitation, however, is a shift in the upper level winds that will draw elevated smoke from Idaho, Montana, and Canada toward Washington.  Below you can see the wind aloft over Washington expected for this weekend. 

The primary impact from the out-of-state smoke will be slight reductions in air quality across much of eastern Washington through the weekend, particularly overnight and through the morning hours. I do not anticipate widespread AQI in the Orange/Unhealthy for Sensitive Groups range, but Yellow/Moderate AQI will likely continue for areas such as Spokane, Colville, and the Tri-Cities. Widespread cloud cover this weekend across Washington will hide the dingy grey skies usually associated with wildfire smoke, so be sure to check the Washington Department of Ecology's Smoke & Fire page for the air quality in your area: Smoke & Fire Air Quality

Matthew Dehr

Wildfire Meteorologist

West Hallett Fire Causing Smoke Impacts in Spokane

The West Hallett Fire burning southwest of Spokane is causing moderate smoke impacts in the Spokane area. The 150 acre fire started yesterday afternoon and is burning in timber, brush, and grass. Evacuations are in effect. 

Moderate air quality conditions are expected to continue throughout the day in the Spokane area. Please see the Health Information tab to learn how you can protect yourself from wildfire smoke. 

                                    Aircraft drop water on the West Hallett Fire near Spokane. Source: Spokesman-Review

Eagle Bluff Fire threatening Oroville

The Eagle Bluff fire exploded yesterday and continues to grow, with over 10,000 acres burned so far. There was some minimal lightning recently, but the cause is still officially under investigation.   Evacuations are in effect near Oroville, in Okanogan county and in Canada around Osoyoos.  Shelter is available at the Oroville High School.  Fire crews and aircraft are fighting the fire actively, but the fire is burning quickly in timber and brush with wind driven runs. Structures are threatened and road closures are in effect.

Moderate to Unhealthy smoke surrounds the area along Highway US-97 from Omak to Osoyoos.  Smoky conditions in Okanogan county should be expected for the coming days.  This fire is rapidly spreading, please stay up to date on evacautions via Okanogan County Emergency Management.

        Smoke from the Eagle Bluff Fire.  Source KREM 2 News.  Credit: Susan Christensen

Weekend Outlook: no smoke on the horizon

The Newell Road Fire is now at 61,000 acres and 71% contained, and smoke impacts from the fire have continued to decrease since last weekend. We're also unlikely to see smoke impacts from the Simnasho and Bedrock fires currently burning in Oregon. Washington's Air Quality should continue to be GOOD for the near future.

Please continue to recreate responsibly this weekend by observing fire bans and fully extinguishing recreational fires, as high winds can exacerbate fire spread.

And to wrap up this Friday post, a quick aside about our air quality so far this wildfire season. If you're thinking that in general air quality has been pretty good, you're not wrong! Below is a plot of observed daily air quality levels for each day since May. Each row corresponds to the maximum air quality level observed in each county on a given day. Lots of green, or GOOD air quality! 

Newell Road Fire Grows Quickly and Sends Smoke to Tri-Cities

The Newell Road Fire in Klickitat County has grown considerably over the past day, with recent reports that it has burned 30,000 acres of grass, brush, and trees.  Evacuations are in effect. Westerly winds will continue and strengthen, which could lead to more rapid fire growth over the next couple days.  The fire is sending smoke into Benton and Franklin Counties, which is expected to continue through the weekend.  We are seeing Moderate to USG air quality in the Tri-Cities.  

We also expect some light smoke aloft in southeast Washington on Monday from the fires in Oregon.

Please see the Health Information tab on this blog to learn how you can protect yourself from wildfire smoke.

Smoke from the Newell Road Fire; source USTimesPost

High Altitude Smoke and Eastside Fire Weather

Close observers of the Fire and Smoke Map (airnow.gov) over the last few days may have noticed the persistent smoke plume overlaying our region, as seen from the Thursday 7/20 afternoon image below.

Very close observers may have wondered: “If the skies of Washington State have been dimmed by smoke from wildfires in Oregon and Canada for the last few days, how is it that our Air Quality index has mostly remained GOOD?”

The answer is that the smoke plume from these out of region fires has remained aloft at or above 10k feet; when smoke is present at that altitude but not at ground level, it can register on satellite imagery, but not on air quality monitors and sensors on the ground.

Within the state, fires on Joint Base Lewis-McChord have contributed near surface smoke to the south Puget Sound beginning on Wednesday 7/19. At least one these fires is burning in the Artillery Impact Area and is therefore not subject to full suppression tactics. Expect this fire to continue to produce mild-moderate smoke impacts locally until it burns itself out.

NOAA HRRR Near Surface Smoke: 7/20 @ 3:15pm

Other smaller fires did occur on both sides of the Cascades this week, but were quickly suppressed, and did not have lasting impacts on local air quality.

Moving into the weekend, the National Weather Service has identified elevated fire risk for the eastside of the state from Friday through Monday. By observing fire bans, fully extinguishing recreational fires where they are allowed, and traveling responsibly you are making a positive contribution to Washington State’s public health and safety.

Enjoy the weekend!

Industrial Fire in Longview Causing Smoke Impacts in the Vancouver/Portland Area

Residents in the Vancouver/Portland area woke up to unhealthy air quality levels this morning. Air quality deteriorated overnight due to transported smoke from an industrial fire at Nippon Dynawave Packaging in Longview that started yesterday evening.

    Source: EPA Fire and Smoke Map, 9am

The smoke arrived in the Vancouver area around 8pm last night--the hourly PM2.5 timeseries below shows the smoke transport down the Columbia River in the evening hours and impacting the air quality monitors in Vancouver; the Longview monitor is upwind of the fire location so did not observe elevated PM2.5 concentrations. 

We are starting to see decreases in PM2.5 concentrations as mixing and ventilation increases this morning, and clearing should continue throughout the day. However, smoke impacts in Vancouver will likely persist through tomorrow as the fire continues to smolder and a marine layer traps any smoke near the surface. 

Also contributing to smoke in the area is a fire at an abandoned K-Mart building in northeast Portland.

The Southwest Clean Air Agency has issued a Air Pollution Advisory for Clark and Cowlitz Counties today through Friday, July 21. We'll continue to monitor the situation and update the blog as needed.

Weekend Fire Weather Watch and Heat Warning

The National Weather Service has issued a Heat Warning and Fire Weather Watch for Central and Eastern WA, with temperatures over 100 degrees expected in the Tri-Cities and other nearby areas.  The hottest temperatures will be on Sunday in the Columbia Basin, while winds become gusty.  A dry cold front will sweep through on Monday delivering strong winds with the potential to spread any new fires.  We will need to take extra care to recreate responsibly this weekend by observing fire bans, and fully extinguishing recreational fires where they are allowed. Stay hydrated and prepare for high temps! 

There aren't any large fires in Washington right now but there are some small recent fires near the southern border of our state.  The Knight Road fire in Klickitat County has subsided and the Gordon Butte Fire along Fulton Ridge in Oregon should be manageable.

We have seen occasional moderate air quality from Canadian wildfires skirting across the northeast border of our state, and this will likely continue into the future.  However, we are getting really good wind directions to avoid Canadian smoke and this should continue for the near-term.  We expect Good air quality in Washington through the weekend, except for some moderate local impacts from any new fires that occur.  The fires in Canada are getting really bad though, so it will be an issue for us in the weeks to come.  

GOES Image of Canadian Wildfire Smoke - July 14 @ 8 a.m. PDT

Fireworks, wildfire smoke, and hot weather

The combination of good weather (a high pressure system), wildfire smoke from British Columbia, and fireworks led to very high air pollution last night in the Puget Sound area.  This was particularly true in Pierce County where air quality was in the Very Unhealthy range earlier this morning.  Thankfully air quality has greatly improved and most areas are Moderate.

 

Air quality as of 12pm 7/5/2023

With another hot day today we should see good vertical mixing – when the air near the ground heats up and rises, bringing smoke with it.  This will dilute the smoke and continue to improve air quality.

The majority of the pollution we saw last night was due to fireworks.  The wildfire smoke from British Columbia, which arrived earlier in the day on July 4^th, only pushed us from Good to Moderate.  We don’t expect more of that smoke in the near future, though the fires are still burning and the possibility of smoke later on remains.

Given that, we may see another (smaller) pollution spike tonight depending on how many fireworks are left over.

Also, there is a wildfire near Shelton, the McEwan fire, that started yesterday afternoon and has burned around 250 acres as of last count.  Crews are working to create fire lines to prevent the fire from spreading.  Air quality in Shelton is currently at Unhealthy For Sensitive Groups and smoke impacts are expected to persist for the time being.  So far we expect impacts to be local, but models show that some smoke could reach Pierce County overnight.

Sensors in Skamania county along the Columbia river are showing USG smoke impacts from the Tunnel Five fire.

We will continue to monitor the situation and update as needed.

 

 

Tunnel Five Fire near White Salmon and 4th of July Update

Just a couple miles west of White Salmon, the Tunnel Five fire is burning actively in timber and brush, causing local smoke impacts in Skamania and Klickitat counties along the Columbia river.  Evacuations and road closures are in effect while crews work on containing the fire.  Currently the fire has burned over 500 acres in hot/dry conditions, and winds are expected to send smoke around the Columbia river gorge in that area for the next few days.  White Salmon is currently showing unhealthy air on sensors, with moderate smoke making its way to Dallesport.  Tuesday and Wednesday will have a wind shift, with local smoke impacts expected in Carson, Stevenson, and North Bonneville.

Image: Smoke from the Tunnel Five fire on July 2, 2023.  Source: yahoo.com

Hot and dry weather is expected through this week with fire danger expected to peak on Wednesday/Thursday. Fire potential is elevated on the 4th of July due to the combination of rising fire danger, dry weather, and potential extra ignitions. The National Weather Service currently has a Red Flag Warning for Central WA and SouthWest WA.

Meanwhile, we expect some moderate smoke to impact parts of WA on Tuesday/Wednesday from the BC fires.  This will likely cause hazy conditions and some minor smoke impacts, at first across the northern counties of the state (e.g. Clallam, Whatcom, Okanogan, etc.) and potentially lingering across the state into Thursday.

Enjoy your mid-week Holiday!

Statewide smoke forecast for the weekend and beyond

While there are a few small fires in Central Washington, air quality across Washington State is GOOD (we're thinking of our friends in the midwest and on the east coast that are currently dealing with poor air quality). However, a building high pressure system will result in hot and dry temperatures through the weekend.

The National Weather Service issued a Fire Weather Watch for portions of Central Washington on Saturday.

Please keep in mind that fireworks not only contribute to smoke but also are responsible for starting new fires. Fires can start and spread much more easily in hot and dry conditions. Please exercise extreme caution if igniting fireworks. If recreating, check local fire restrictions and consider if a campfire is necessary. 

Based on the hot and dry weather, some areas may observe Moderate to Unhealthy for Sensitive Groups air quality intermittently through the weekend and holiday. It's also likely that local smoke impacts from firework displays and usage will linger into the morning of July 5th. 

We're also keeping an eye on the wildfires burning in Alberta and British Columbia--shifting conditions to winds from the north could lead to smoke impacts in Washington State next week. At this time it's uncertain how much of that transported smoke will reach the surface and how much will stay above us in the atmosphere. A reminder that the latest air quality conditions and 5 day smoke forecast are shown in the map at the top of this page, and we'll update the blog as needed.

Have a safe and happy 4th of July!

Minor Smoke Impacts Today; Clearing for Weekend

Smoke from British Columbia is filtering southward into Washington

The 1.2 million acre Donnie Creek Fire in northeast British Columbia is primarily responsible for the smoke impacts we are seeing this morning across eastern Washington. The smoke is being driven southward by the low pressure system that brought strong westerly winds to Washington earlier this week, and is currently departing the state to the northeast. Due to the origin location of the smoke and the current prevailing wind pattern, smoke is expected to remain east of the Cascade crest in Washington. 

Gusty westerly winds return Friday, clearing smoke

In the wake of the low pressure system, Washington will experience a much calmer day of weather for Thursday, with weaker winds and slightly sunnier skies. The pattern will turn cloudier and windier again by midday Friday as another low pressure system moves toward the Pacific coast from the west. Strong westerly winds will again develop for Friday and are likely to continue through the weekend. These winds will clear out the current smoke through the night Thursday, and we should see much improved AQI's across the state for Friday and the weekend. 

There were several grass fires in south and central Washington that ignited on Tuesday and Wednesday under the dry and very windy conditions, and fire danger will again be elevated for Friday and Saturday. The smoke from these grass fires did not cause any air quality issues due to the strong winds and excellent vertical mixing quickly lifting the smoke above ground level and dispersing it in the wind. Fire danger for Friday and Saturday will not be as high as it was on Tuesday, but any new fire starts in fine, grassy fuels will be capable of quick spread, though their smoke impacts will be minimal. 

This week is Smoke Ready Week in Washington! Learn more about how wildfire smoke affects your health and steps you can take to reduce your exposure here: Smoke Ready WA

Matthew Dehr, Wildfire Meteorologist 

Washington DNR 

June 12-16 is #SmokeReady Week

It appears summer has arrived early in the Pacific Northwest so now is the ideal time to prepare for wildfire smoke season. 

Wildfire smoke not only affects your outdoor plans, but it can make it hard to breathe, and cause or worsen existing health problems.

Every year federal, state, and local agencies and Tribes across the region get #SmokeReady to bring you the most current information on how wildfire smoke may impact your summer plans and health through this blog. 

Read more about wildfire prevention, where to find burn ban information, how to monitor air quality, and get smoke forecasts on the Washington Dept. of Ecology’s website or read their blog available in English and Spanish:

•    Let’s get #SmokeReady June 12-16
•    Prepárate para la Semana del Humo

And then take some time to review the Washington Dept. of Health’s guidance on how to protect yourself and your family’s health from wildfire smoke.

Each day this week has a different #SmokeReady theme:

Monday: What's in smoke?

Tuesday: Stay informed about air quality

Wednesday: Smoke and your health

Thursday: Strategies to minimize smoke exposure

Friday: Preventing smoke

Let's get #SmokeReadyTogether and have a safe and enjoyable summer!

When will the smoke in Central and Eastern WA clear out?

Smoke from the Canadian wildfires continues to impact Central and Eastern Washington, with monitors observing Air Quality Index values corresponding to Moderate and Unhealthy for Sensitive Group levels.

    

Source: WA Ecology Air monitoring map; 11am

Due to the residual smoke lingering in the region, the Air Quality Alert has been expanded to include all Central and Eastern Washington counties. The Air Quality Alert will expire tomorrow morning at 10am.

Some haze and smoke will persist throughout today, and temperatures will get hot, but air quality should slowly improve thanks to a push from southwest winds. We'll return to our normal May air quality conditions by the end of the weekend with the arrival of a cold front.  The latest FireWork model forecast animation below shows the smoke plume moving away from Washington State:

Welcome to the 2023 Wildfire Smoke Season

Wildfire season is starting a bit earlier than expected due to smoke from large fires in central Alberta. While the Canadian fires have been burning for a couple weeks, shifting weather patterns to northeasterly winds brought the smoke to Washington State. This morning's GOES-WEST satellite image shows the plume of smoke across the state. Luckily, that plume of smoke is mostly staying above us--it's too high in the atmosphere to mix down to the surface. 

However, we are seeing some ground-level smoke impacts in the north central and eastern parts of the state, with monitors observing hourly PM2.5 concentrations corresponding to an Air Quality Index of Moderate:

        Source: EPA Fire and smoke map, 8:45am

An Air Quality Alert has been called for the following counties and expires Saturday, May 20 at 10am: Okanogan, Ferry, Stevens, Pend Oreille, Lincoln, Spokane, Adams, and Whitman. PM2.5 levels may reach Unhealthy for Sensitive Group levels in these counties. While today will be hazy in these areas, relief from the smoke will come later in the day with the arrival of southwest winds. If conditions improve, the Air Quality Alerts will be lifted before Saturday.

As far as the rest of the state, the smoke is high enough in the atmosphere and very unlikely to mix down to the surface and impact the air we breathe. Take a look at this image of the smoke aloft from Puget Sound Clean Air Agency's ceilometer in Marysville, where we can see the smoke (dark grey bands) present at around 3-5 km above ground:

Smoke in May caught us all by surprise, but it's a good reminder to be prepared for the upcoming wildfire smoke season. We'll update this blog as conditions change, and be sure to visit the Health Information tab on this page for tips on how to protect yourself from wildfire smoke.