GOES-WEST images from the Hazard Mapping System Fire and Smoke Product show heavy smoke concentrations in parts of Montana, northern Oregon, and northeast Washington State (Figure 1). This is due to several wildfires in these areas reported by INCIWEB. Particularly heavy smoke continues to emanate from the still active Williams Flat Fire in Washington State south of the Colville Reservation (Figure 2). INCIWEB reports that this is a 18,000 acre fire caused by a lightening storm on August 2, which incited burning inside of a Game Reserve. The fire has proven difficult to contain due to the rough terrain and unstable weather conditions. Only 25% of the perimeter has been contained and local authorities continue to tend to the situation (Figure 3).
A more general view of the hazard map actually indicates lower levels of smoke throughout the North American regions than as of late. This is a positive development for the region which has recently been largely covered with light smoke from fire activity.
NOAA’s Hazard Mapping System Fire and Smoke Product reported a region of heavy density smoke observed over portions of Oregon, Washington, Idaho, Montana, Wyoming, and into North Dakota. The smoke was captured in the GOES-16 and GOES-17 retrievals. The GOES-16 “True Color” (Figure 1) image (courtesy NOAA’s AerosolWatch) from shows the locations and associated smoke plumes with the Williams Flats Fire in Keller, WA. This fire started August 2 after a band of early morning thunderstorms with lightning moved across the eastern portion of the Colville Indian Reservation, as reported by INCIWEB.
The AOD associated with this smoke ranged between 0.2-1 over his region (Figure 2: GOES-17 AOD Composite).
The smoke is impacting the local air quality as shown in the PM2.5 timeseries (Figure 3) from air quality monitoring stations in Spokane, WA (data source: AirNowtech.org). PM2.5 concentrations ranging between 18-128 up/m3 after 2:00 pm PDT (14:00 LST), and is the source of the Code Orange and Yellow AQI (Figure 4, Airnow animation) in the Pacific Northwest.
The rest of the nation experienced for most of the day Code Yellow (Moderate AQI), except locations in Northern Michigan and the Southwestern U.S.. Southwestern Ozone Code Orange (Unhealthy for Sensitive Groups) AQI levels were fueled by the excessive heat experienced today over the region.
Data from the CHM15k (Figure 1) and the UMBC Micro-Pulse Lidar (Figure 2) at UMBC both support the presence of aerosols in the boundary layer throughout the day.
GOES-16 image (Figure 3) shows below 0.5 levels of Aerosol Optical Depth (AOD) in the middle of the day over much of the Continental United States and southern Canada, particularly in the central region. Clouds hindered a good AOD retrieval over Baltimore.
The EPA AIRNow Map shows Code Orange and Code Red for ozone levels in southern California for the day. This may be associated with high temperatures experienced in the region.
Cloud cover over the Baltimore area made aerosol data acquisition difficult through GOES-16 Imagery (Figure 1). The EPA AIRNow Air Quality Map shows Moderate levels of Ozone throughout the Baltimore-D.C. area (Figure 2).
AIRNow also shows Code Red AQI levels due to particulate matter near Spokane, WA (Figure 3). INCIWEB indicates these levels are due to the smoke produced by the ongoing Williams Flat fire near the Franklin D. Roosevelt Lake. This fire began yesterday on August 2 and has produced large smoke plumes (Figure 4).
For the Baltimore region, the EPA AIRNow Air Quality Map shows Good (Code Green) air quality in the morning and nighttime (Figure 1). In the middle of the day, Moderate (Code Yellow) AQI levels develop and recede. Unhealthy (Code Red) and Unsafe for Sensitive Groups (Code Orange) ozone levels can be seen in both southern California and Arizona during midday (Figure 2). All these circumstances illustrate how hot portions of the day can exacerbate ozone levels and create safety concerns.
The EPA AIRNow Air Quality Map shows a large area of Moderate (Code Yellow) and Unhealthy for Sensitive Groups (Code Orange) levels of particulate matter in the Montana region east of Missoula (Figure 1). This is most likely due to several wildfires in the region that remain active. The Beeskove Fire near Missoula (Figure 2) and the North Hills Fire near Helena (Figure 3) both began in late July and remain active through today. Images are provided by INCIWEB.
The Hazard Mapping System Fire and Smoke Product uses GOES-WEST data to show moderate and heavy smoke concentrations in the Northwest Territories of Canada and the eastern areas of Alaska. The heavy smoke near Alaska is attributed to large complex fires in its central and eastern regions. Light smoke concentrations can also be seen from the edge of Russia all across Canada, Greenland, northern regions of the CONUS, and parts of the Atlantic and Pacific oceans (Figure 4).
The Airnow animation above shows Moderate (Code Yellow) AQI levels along the Eastern US (Figure 1) as a surface high pressure system sets up over this region, and its associated light winds and high temperatures enhance ozone production. Code Yellow Ozone AQI levels were also reported in the Southwestern US, but Unhealthy (Code Red) AQI levels were experienced in locations along San Bernandino, CA (Figure 2).
NOAA’s Hazard Mapping System Fire and Smoke Product (Figure 3) reported the presence of smoke from several wildfires in Alaska blowing east into Canada as well as smoke from Canadian fires over Maine and extending into the Atlantic Ocean.
Today’s UMBC (Figure 1) lidar timeseries shows remnant smoke, between 2500-3000 meters, from the Canadian fires in the morning hours. The boundary layer reached max heights of 1900 m, and was cloud capped (red returns around 1900 m from 16:30-20:00 UTC) from 12:30-4:00 pm (local time).
NOAA’s Hazard Mapping System Fire and Smoke Product continues to report smoke from wildfire activity throughout Alaska and Canada. The smoke continues to produce a large areas of varying density. This smoke covers an area extending from the easternmost portions of Russia into the Yukon and from the Brooks Range in northern Alaska to Juneau and northwestern British Columbia. The most dense smoke resides from over Anchorage into much of central and southwestern Yukon. The smoke (Figure 2) can be seen in the VIIRS true color image (Figure 2) over the Atlantic Ocean (gray plumes).
Moderate AQI Levels were reported in the Ohio River Valley, Northeastern States and Gulf States, as shown in EPA’s Airnow Air Quality Index animation (Figure 3).
Significant wildfire activity can be observed along Alaska and Northwestern Canada with smoke spreading along Washington, Oregon, Idaho and northern California and Nevada. Smoke from Canadian wildfires in Manitoba and Ontario is widespread along the Great Lakes, Mid-Atlantic and Northeastern United States according to NOAA’s Hazard Mapping System Fire and Smoke Product (Figure 1).
A thick plume of smoke, and its corresponding AOD retrieval, from the Canadian wildfires was observed this morning in today’s GOES-16 GeoColor and AOD Product over the Great Lakes, the Mid-Atlantic and Northeastern states (Figure 2 and 3: NOAA STAR NESDIS Aerosol Watch Product from 12:41 UTC (8:41 EDT)).
This plume has not impacted the surface air quality monitors as shown in the lidar timeseries below from measurements at City College of New York (Figure 4), Howard University Beltsville Research Campus (Figure 5) and UMBC (Figure 6). The smoke was observed 2500-4000 meters and above the boundary layer. The boundary layer at 18:00 UTC (2:00 pm EDT) had a max height around 2000 meters. Real-time lidar timeseries for these sites are available under the Real Time Data tab (above), as well as images from past days under the Archived Data tab.
NOAA’s Hazard Mapping System Fire and Smoke Product (Google Earth image above) reported the presence of several agricultural fires in Florida, with plumes moving south. Locations of fires (light yellow dots (Fire Radiative Power (FRP) ) over-imposed in GOES-16 Geo-Color image below and AOD associated with the smoke plumes of the agricultural fires were captured by NOAA GOES-16 satellite. GOES-16 images below as courtesy of NOAA’s AEROSOL WATCH.
This smoke didn’t impact the air quality in Florida, as based on EPA’s Airnow Daily Average PM AQI image below. Moderate PM2.5 AQI levels were reported along the Pacific Northwest and the state of Colorado.