Q2 Morning Email Newsletter

May 25, 2013 10:13 PM by Jason Laird - Q2 Weather Center

Severe weather in Eastern Montana

BILLINGS - The Eastern half of the state is still under a tornado watch until 10 pm this evening. Along with a tornado watch severe thunderstorms have been on the rise as well!

Multiple strong cells have been slowly moving about the Eastern half of the state this afternoon, causing wide spread hail up to one inch in diameter and very sever storms. Isolated tornadoes are not out of the question due to the increasing level of instability and shear. Shear is the variation of winds, direction and speed.

The main factors needed for a tornado to form are lift, moisture, and some sort of disturbance all of which are present in Eastern Montana. Dew point temperatures are high in the Eastern half of the state are well into the mid 50's at times, and a cold front passing through has created the disturbance.

Monday...Severe thunderstorm threat continues as a short wave trough in the mean flow aloft moves over Montana. Strong divergence looks to affect our forecast area with a strong wind shifts to the West are expected to occur. This may establish a line of convection from just East Billings moving east into higher dew points in the afternoon. Thus presenting the best chance for severe weather into the Eastern sections while Western areas may downslope behind the trough passage.

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