Wildfire Smoke Updates Home | Archived Wildfire Smoke Updates | Today's Air

Wildfire Smoke Update
for
Wednesday, October 3, 2012 8:20 AM

Satellite Photos | Locations and Smoke Conditions


Today's Report and Forecast Today's Summary
Air quality has greatly improved this morning thanks to a strong cold front that passed overnight. Snow has fallen in many of the mountains of west-central Montana, and even low elevations accumulated some snow today, both in the western valleys and in the central and northern plains. Temperatures are mostly in the 30s and winds are breezy out of the north. Air quality has become GOOD in all locations, even though some cumulative exposures are MODERATE to UNHEALTHY FOR SENSITIVE GROUPS. Air quality will remain GOOD today as the winds, precipitation, and instability in the atmosphere continue.

There will be an update this afternoon.
Please see "Today's Report and Forecast" (left). There will be another update this afternoon.
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: DEQMTSmoke@mt.gov




This is the radar coverage this morning, showing areas of light and moderate precipitation. Eastern Montana is reporting mostly rain at this time, but around Great Falls and Billings, precipitation is falling mostly as snow or is changing over to snow. 

This is the radar coverage this morning, showing areas of light and moderate precipitation. Eastern Montana is reporting mostly rain at this time, but around Great Falls and Billings, precipitation is falling mostly as snow or is changing over to snow.


 
Snow even reached the mountains around Missoula this morning.

Snow even reached the mountains around Missoula this morning.


Snow is on the ground in Great Falls.

Snow is on the ground in Great Falls.

Red indicates hot spot detected. Grey represents smoke seen by satellite. Fire size is exaggerated for visibility at this scale. To identify individual fires on graphic above go here: https://activefiremaps.fs.fed.us/lg_fire2.php 

Nothing beats the beauty of snow in Glacier National Park.

Nothing beats the beauty of snow in Glacier National Park.

Real time particulate information is currently available in most of the larger urban areas from MTDEQ's Today's Air website.

Today's particulate report below compares particulate levels received from DEQ's
reporting stations with MTDEQ’s Health Effect Categories.

Locations and severity of PM 2.5 particulate values over the past 24 hours from the time above.
Health Effects Categories City
  Hazardous  
  Very Unhealthy  
  Unhealthy  
  Unhealthy for Sensitive Groups  Hamilton B24
(Hourly concentrations are GOOD)
  Moderate

  

  Good

 Dillon
Sidney
Billings
Bozeman
Flathead Valley
Missoula
Frenchtown B8, B1
Seeley Lake B8, B1
Libby
Great Falls
Butte B8, B1
Helena B8, B1
West Yellowstone
 

B1(x) One-hour BAM value (number of values)
B8(x) Eight-hour average BAM
B24 24 hour  average BAM value
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.