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Wildfire Smoke Update
for
Wednesday, September 11, 2013 3:47 PM

Satellite Photos | Locations and Smoke Conditions


Today's Report and Forecast Today's Summary
Once again, air quality continues to be GOOD around the state this afternoon. A strong ridge of high pressure has created very sunny and generally calm conditions for the past couple of days. Mornings have been very cool to help reduce wildfire activity across western Montana and Idaho, and high atmospheric winds have not pushed this wildfire smoke over Montana. Temperatures are still well above average this afternoon.

Air quality will continue to be GOOD around the state on Thursday as the high pressure ridge continues to dominate our weather. Temperatures will be warm again and winds will become breezy from the east by mid-afternoon. On Friday, a weather system over the Great Basin will send monsoonal moisture into the Northern Rockies, creating a slight chance for afternoon thunderstorms. Temperatures will stay warm over the weekend with another slight chance of storms on Saturday, but air quality should remain GOOD through Sunday. The long-term outlook for next week looks like the weather will be active, wetter, and much cooler.
Once again, air quality continues to be GOOD around the state this afternoon. Temperatures are still well above average.
Residents near active fires and under plumes aloft need to remain aware of current conditions and use the visibility guidelines to guide their activity decisions as the situation changes.

Kristen Martin
State Air Quality Meteorologist
Air Resource Management Bureau
Montana Department of Environmental Quality
Phone: (406) 444-0283
Email: kmartin@mt.gov




This is the visible satellite image from 3:30 this afternoon. 

This is the visible satellite image from 3:30 this afternoon.


 





This morning’s analysis from NOAA’s satellite services division shows the active fires in Montana and the smoke plumes combining and spreading downwind (the analyzed smoke is based on yesterday’s satellite coverage, the fire detects are based on last nights satellite coverage).

This morning’s analysis from NOAA’s satellite services division shows the active fires in Montana and the smoke plumes combining and spreading downwind (the analyzed smoke is based on yesterday’s satellite coverage, the fire detects are based on last nights satellite coverage).

Red indicates hot spot detected. Green represents thin smoke, yellow is moderate smoke, and purple is dense smoke. Fire size is exaggerated for visibility at this scale. To identify individual fires on graphic above go here: http://activefiremaps.fs.fed.us/lg_fire2.php 




The smoke report below compares particulate levels where information is available to MDEQ’s Health Effects Categories. Real time particulate information is currently available in most of the larger urban areas from several different sources including: DEQ run PM-10 BAMS and PM2.5 BAMS, NWS ASOS visibility monitors, and USFS remote access Nephelometers and BAMS. These advisories represent conditions between midnight and 8 AM and may change substantially throughout the day.

Locations and severity of forest fire smoke reports since midnight of the date above at reporting stations.
Health Effects Categories City
  Hazardous  
  Very Unhealthy  
  Unhealthy  
  Unhealthy for Sensitive Groups  
  Moderate

  

  Good

 All reporting locations 

B1(x) One-hour BAM value (number of values)
B8(x) Eight-hour average BAM
B24 24 hour  average BAM value
Vis(x) Visibility value (number of hours)
Vis(am/pm) Visibility value from twice/day reporting stations

Local impacts in areas immediately adjacent to active fires are expected to exceed some or all of the advisory levels.  DEQ recommends the use of local visibility guidelines to evaluate possible health risks and make informed activity decisions.