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 2001 NWS Storm Prediction Center Norman OK 0311 PM CDT Sun Aug 16 2026 AREAS AFFECTED...central and southern Missouri into southwest Illinois CONCERNING...Severe potential...Watch possible VALID 162011Z - 162215Z PROBABILITY OF WATCH ISSUANCE...60 percent SUMMARY...The threat for severe storms capable of mainly damaging wind gusts is expected to increase across the area late this afternoon into evening. A severe thunderstorm watch is possible. DISCUSSION...Visible satellite and surface observations indicate a couple of boundaries remnant from earlier storms located over the region as of 20Z. Objective analysis shows, and visible ....... more

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MESOSCALE DISCUSSION 2000 NWS Storm Prediction Center Norman OK 0228 PM CDT Sun Aug 16 2026 AREAS AFFECTED...south-central Pennsylvania...the Maryland and West Virginia Panhandles...and northern Virginia CONCERNING...Severe potential...Watch likely VALID 161928Z - 162130Z PROBABILITY OF WATCH ISSUANCE...80 percent SUMMARY...The threat for severe storms capable of mainly damaging wind gusts is expected to increase late this afternoon into evening. A severe thunderstorm watch is likely. DISCUSSION...In the wake of an MCV moving from south-central into southeast PA, clouds are gradually clearing, allowing for increased diabatic heating this afternoon. When ....... more

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MESOSCALE DISCUSSION 1999 NWS Storm Prediction Center Norman OK 0203 PM CDT Sun Aug 16 2026 AREAS AFFECTED...portions of the Black Hills in southwestern South Dakota into far northern Nebraska CONCERNING...Severe potential...Watch unlikely VALID 161903Z - 162100Z PROBABILITY OF WATCH ISSUANCE...20 percent SUMMARY...Isolated thunderstorms are forecast to evolve southeastward out of the Black Hills through this evening. The primary hazards will be isolated large hail and DAMAGING WIND GUSTS. DISCUSSION...Convective development is ongoing across portions the Black Hills in southwestern South Dakota and adjacent areas of Montana/Wyoming. Expectation is for at ....... more