Air Quality Summary Report - Liberty and Rice Ridge Fires For: Friday, August 11, 2017
Air Resource Advisor: Andrea Holland
FIRE, WEATHER AND SMOKE SYNOPSIS
Weather and Fire Behavior Summary: This is Day Four of the same weather pattern with continued wet/dry thunderstorm potential and little opportunity for significant clearing of smoke out of affected valleys. Fuel moistures seen on the Rice Ridge fire are at historic lows; fire activity will continue to increase and spot fires will be difficult to catch especially in areas of beetle kill and heavy fuel concentrations. The Liberty Fire continues to see minimal fire activity with spread through smoldering and creeping enhanced by single tree and group torching. Spotting will be short range.
Smoke Summary: Not much relief today for Seeley Lake residents as smoke will persist throughout the day. Arlee will see smoke levels vary between USG and Moderate for most of the day with heavier concentrations spilling back into the area late tonight. Clearwater is likely to see Moderate to USG conditions throughout most of the day with heaviest concentrations around USG flowing in this evening and lasting most of the night.
Air Quality Outlook (Smoke Related – PM2.5 only. Forecasts based on modeled smoke dispersion)
Sites with air quality monitors (based on an average of hourly PM2.5 values for a 24-hr period, midnight to midnight)
Smoke Notes for Today: Smoke levels may hover in Moderate to USG range for most of day. Late tonight will see levels approaching Hazardous.
Site Seeley Lake
Smoke Notes for Today: Better air quality (i.e. USG range) possible between noon and late afternoon.
Smoke Notes for Today: Moderate conditions for most of the day. USG this evening and most of tonight.
Disclaimer: Conditions may change quickly. These predictions are based on anticipated weather and fire activity.
USG – Unhealthy for Sensitive Groups
Check out these links for additional information including wildfire smoke and your health. Montana Department of Environmental Quality: http://svc.mt.gov/deq/todaysair/ Health Effect Categories and Visibility:
http://deq.mt.gov/air/FireUpdates/BreakpointsRevised CDC – Protect Yourself from Wildfire Smoke
https://www.cdc.gov/features/wildfires/index.html ArcGIS Wildfire Maps: https://tinyurl.com/yacdzafh