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Wildfire Smoke Update
Monday, August 5, 2013 8:51 AM

Satellite Photos | Locations and Smoke Conditions

Today's Report and Forecast Today's Summary
Air quality is GOOD at all locations this morning. For today, Red Flag Warnings are in effect for parts of eastern Idaho where several active wildfires are currently located. Weather conditions will be favorable this afternoon for high fire activity and smoke production late this afternoon. Atmospheric winds will generally blow this smoke due east. This will put most of the southwestern region of Montana downwind of this smoke, including the Missoula and Bitterroot Valleys. A weather disturbance will pass through the state late this afternoon as well, which will then direct that smoke to the southeast and then over Wyoming overnight. As this disturbance passes, it may mix smoke down to the ground, which would cause elevated particulate concentrations. This may cause MODERATE air quality late this evening from the Bitterroot Valley to the Gallatin Valley and southwestward. Otherwise, air quality will remain GOOD across the rest of the state. There will be another smoke update later this afternoon with a look ahead at the next few days.
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.

Air Quality Bureau
Montana Department of Environmental Quality
Phone: (406) 444-3490
Email: DEQ-ARMB-Admin@mt.gov




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
  Very Unhealthy  
  Unhealthy for Sensitive Groups  



 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.