Southern Indiana Weather Spotter's Reference
Current Mesoscale Discussions for the USA
Checks for Severe Potential, Heavy Rain, Heavy Snow, and Freezing Rain
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MESOSCALE DISCUSSION 0767 NWS Storm Prediction Center Norman OK 0221 PM CDT Sun May 11 2025 AREAS AFFECTED...central Florida northward toward southeast Georgia CONCERNING...Severe potential...Watch unlikely VALID 111921Z - 112145Z PROBABILITY OF WATCH ISSUANCE...20 percent SUMMARY...Storms are forecast to increase in coverage throughout the afternoon from the central Florida Peninsula into northeast Florida and southeast Georgia. DISCUSSION...Storms are currently increasing east of Tampa to west of Okeechobee where strong heating has led to strong instability. The southerly flow regime should support a north/northeast movement to this development, affecting ....... more

MESOSCALE DISCUSSION 0766 NWS Storm Prediction Center Norman OK 0149 PM CDT Sun May 11 2025 AREAS AFFECTED...Portions of southeast Georgia CONCERNING...Severe potential...Watch unlikely VALID 111849Z - 112045Z PROBABILITY OF WATCH ISSUANCE...20 percent SUMMARY...A locally greater risk for DAMAGING WINDS and perhaps a tornado is evident in southeast Georgia near a local warm front feature. DISCUSSION...A small corridor in southeast Georgia has heated into the low 80s F. A few weak discrete cells exist near the Georgia/South Carolina state line. One cell has recently intensified and shown signs of low-level rotation. The localized warm front feature will ....... more

MESOSCALE DISCUSSION 0765 NWS Storm Prediction Center Norman OK 0139 PM CDT Sun May 11 2025 AREAS AFFECTED...eastern Idaho into western Wyoming and southwest Montana CONCERNING...Severe potential...Watch possible VALID 111839Z - 112115Z PROBABILITY OF WATCH ISSUANCE...40 percent SUMMARY...Storms should gradually increase in coverage and intensity from eastern Idaho into southwest Montana, with both hail and gust potential. DISCUSSION...A line of convection continue to increase in intensity over the upper Snake River Plain, with both strong heating and low-level warm advection ahead of it. Continued steepening of deep-layer lapse rates as the upper trough ....... more

MESOSCALE DISCUSSION 0764 NWS Storm Prediction Center Norman OK 0130 PM CDT Sun May 11 2025 AREAS AFFECTED...Salt Lake Vicinity CONCERNING...Severe potential...Watch unlikely VALID 111830Z - 112030Z PROBABILITY OF WATCH ISSUANCE...20 percent SUMMARY...SEVERE WIND GUSTS will be possible this afternoon with high-based showers and embedded thunderstorms. DISCUSSION...With temperatures rising into the low/mid 80s F in the vicinity of Salt Lake, high-based showers and isolated thunderstorms have deepened over the last hour. A few of these storms have produced 58-63 mph measured gusts in Tooele/Salt Lake Counties. While low-level wind fields are not overly strong, ....... more