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Wildfire Smoke Update
for
Tuesday, August 6, 2013 3:49 PM

Satellite Photos | Locations and Smoke Conditions


Today's Report and Forecast Today's Summary
Air quality is GOOD at all reporting locations this afternoon. Special satellite products show only a thin layer of smoke in the atmosphere just along the entire southern Montana border. Most of the smoke in the region remains in Idaho and Wyoming this afternoon. Temperatures are pleasant in the mid-70s to mid-80s with scattered cumulus (“fair weather”) clouds around the state.

Wednesday’s weather will be similar to today. Atmospheric winds will blow from the west/northwest to keep much of the smoke from other states out of our area again. Winds, temperatures, and relative humidity values will be similar again as well. Skies will become partly cloudy in the afternoon with a chance of isolated pop-up thunderstorms over the mountainous terrain. Air quality will remain generally GOOD across the state. On Thursday, a weather disturbance will change things up through the end of the week. Atmospheric winds will switch around from the northwest to the south/southwest. This will pull monsoonal moisture up into the Northern Rockies, providing a daily chance for pop-up thunderstorms and rain showers. Winds will stay light to moderate with higher relative humidity values. Air quality is expected to remain generally GOOD, although haze will become more noticeable as the change in wind direction puts Montana downwind of wildfires in Idaho, Wyoming, and even as far away as Oregon.
Temperatures are pleasant in the mid-70s to mid-80s with scattered cumulus (“fair weather”) clouds around the state. Air quality is GOOD at all reporting locations 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.

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 webcam image from Monida Pass along the Montana/Idaho border in southern Beaverhead County shows some of the haziest air in the state this afternoon. However, long-range visibility is still great!

This webcam image from Monida Pass along the Montana/Idaho border in southern Beaverhead County shows some of the haziest air in the state this afternoon. However, long-range visibility is still great!


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.