textproduct: Missoula

DISCUSSION

KEY MESSAGES:

- Shower and thunderstorm activity will continue each afternoon through early next week.

- Warming and drying latter part of next week under a ridge of high pressure.

Even though a ridge of high pressure is trying to build over the area today a very subtle disturbance will move through the region kicking off another round of showers and thunderstorms. The coverage is not to be as extensive as yesterday but these storms will still be capable of producing moderate to heavy rainfall, small hail and lightning.

The low amplitude ridge continues to build over the Northern Rockies on Monday with the shower activity being fairly limited. Then on Tuesday, a disturbance will move into the region from British Columbia. Increased shower activity and westerly winds are expected Tuesday afternoon due to this feature.

Then Thursday into Friday a ridge of high pressure builds over the region causing a warming and drying trend. Temperatures on Friday should be in the mid 80s to mid 90s across western Montana, while the lower valleys of north central Idaho reaching the century mark again. These temperatures are around 10 degrees above average for this time of year.

AVIATION

Yesterday's precipitation has once again allowed for the development of patchy fog and low stratus this morning. KMSO and KHRF will have the biggest impact from the fog and stratus this morning. The fog and stratus is expected to diminish by late morning. Then another round of showers and thunderstorms are expected to develop this afternoon and linger into the evening hours. All terminals are expected to be impacted by storms today with KMSO having the lowest potential. These storms will be capable of moderate to heavy rain, small hail and lightning.

MSO WATCHES/WARNINGS/ADVISORIES

MT...None. ID...None.