Strong to Severe Thunderstorms from the Southern Plains to the Ohio Valley; Heavy Rain and Flooding in the Southern Plains

Severe thunderstorms are expected from central Texas to middle Tennessee and Kentucky this afternoon into tonight. Large hail and damaging winds are the main threats. Heavy to excessive rainfall may produce areas of flooding today and tonight from central Texas into the lower Mississippi Valley. Read More >

According to the American Meteorological Society Glossary of Meteorology, a heat burst is a "localized, sudden increase in surface temperature associated with a thunderstorm, shower, or mesoscale convective system, often accompanied by extreme drying."

Indeed, several Mesonet weather stations just northwest of Mobridge, SD (including the Mahto SDSU and McLaughlin+Trail City RWIS stations) recorded sudden increases in temperature and decreases in humidity, along with spikes in wind gusts from 10 pm Friday to 1 am Saturday morning. Notably, the Mahto station rose ~15 degrees in 20 minutes peaking at 96 degrees at 11 pm, and gusted to 62 mph just before at 10:55 pm. Showers falling into the right environment led to this fairly rare phenomenon. See the slides below for more details.

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Strong to Severe Thunderstorms from the Southern Plains to the Ohio Valley; Heavy Rain and Flooding in the Southern Plains

Heat Burst Observed Friday Night