Fire concerns increase through end of week with dry and windy weather ahead Red Flag Warnings in effect Thursday afternoon Red Flag Warnings in effect Thursday afternoon and last updated 2021-07-21 17:05:14-04 MISSOULA â Storms move out later Wednesday evening, and dry and windy conditions pick up Thursday. Dry and windy air fill in behind a stalled cold front over the Rocky Mountain Front. This will elevate our fire concerns through the end of the work week. Red Flag Warnings are in effect for parts of the northwest Thursday afternoon and evening. Fire Weather Watches are in effect for parts of the southwest Friday afternoon and evening.