SPC Forecast Products
SPC - No watches are valid as of Sat Mar 21 01:45:02 UTC 2026
Published: Fri, 20 Mar 2026 at 08:44:05 PM CDT
No watches are valid as of Sat Mar 21 01:45:02 UTC 2026.

SPC - No MDs are in effect as of Sat Mar 21 01:45:02 UTC 2026
Published: Fri, 20 Mar 2026 at 08:44:04 PM CDT
No Mesoscale Discussions are in effect as of Sat Mar 21 01:45:02 UTC 2026.

SPC Mar 21, 2026 0100 UTC Day 1 Convective Outlook
Published: Fri, 20 Mar 2026 at 07:42:00 PM CDT
SPC 0100Z Day 1 Outlook
Day 1 Outlook Image
Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0739 PM CDT Fri Mar 20 2026

Valid 210100Z - 211200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorm potential appears low the rest of tonight.

...01z Update...

Despite modest boundary-layer heating observed across the Ohio
Valley this afternoon, boundary-layer moisture has struggled to
return to this region. Surface dew points are only in the upper 40s
to near 50F across OH/KY into western PA/WV. As a result, MUCAPE is
pretty meager within only a few hundred J/kg noted across this
region. 00z soundings from ILN/PIT support this with 240 J/kg at PIT
and 130 J/kg at ILN. While deep-layer shear is strong, buoyancy will
likely remain too meager to warrant robust updrafts this evening.
Latest radar data depicts weak convection, a few flashes of
lighting, just ahead of the cold front over central Ohio. This
activity may continue to expand in areal coverage, but
aforementioned negatives suggest severe probabilities are too low to
warrant a risk this evening.

..Darrow.. 03/21/2026

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