Possible derecho today in MT/ND...
SPC Day 1 Outlook
Severe weather, tornado, thunderstorm, fire weather, storm report, tornado watch, severe thunderstorm watch, mesoscale discussion, convective outlook products from the Storm Prediction Center.
www.spc.noaa.gov
...20Z Update...
A Category 4/Moderate Risk was introduced to portions of the
northern High Plains. Confidence is increasing in a well-defined
cold-pool-driven bow echo MCS developing across portions of the
northern High Plains later this afternoon. A potentially dense swath
of 60-100 mph gusts appears likely, and a derecho may occur. Current
observations depict a near stationary surface boundary across far
southeastern MT northeastward into western ND along an elongated
surface trough.