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 0452 NWS Storm Prediction Center Norman OK 0353 PM CDT Wed Apr 15 2026 AREAS AFFECTED...Parts of northwest PA and southwest NY CONCERNING...Severe potential...Watch possible VALID 152053Z - 152300Z PROBABILITY OF WATCH ISSUANCE...40 percent SUMMARY...The area is being monitored for increasing severe thunderstorm potential. An eventual watch issuance is possible. DISCUSSION...Isolated thunderstorms are evolving at the nose of a 30-kt south-southwesterly low-level jet (per VWP data) and related weak low-level warm advection plume in northwest PA into southwest NY. In the near term, a marginally unstable air mass coupled with around 40 kt of ....... more

MESOSCALE DISCUSSION 0450 NWS Storm Prediction Center Norman OK 0238 PM CDT Wed Apr 15 2026 AREAS AFFECTED...portions of western into central Texas CONCERNING...Severe potential...Watch unlikely VALID 151938Z - 152215Z PROBABILITY OF WATCH ISSUANCE...20 percent SUMMARY...Isolated severe wind and hail may accompany some of the stronger storms this afternoon. A WW issuance is unlikely. DISCUSSION...Ahead of an eastward progressing dryline, to the west of a low-level WAA regime contaminated by clouds, a CU field is rapidly developing given ample insolation. Deep-layer ascent is rather weak south of the Red River, but modest flow above 500 mb is resulting in ....... more