Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0246 PM CDT Mon Apr 20 2026
Valid 202000Z - 211200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe storms are not expected today.
...20Z Update...
The TSTM area over the coast of southern New England and the
Mid-Atlantic was removed, as large-scale forcing for ascent and
related thunderstorm activity has shifted offshore. Elsewhere, the
previous forecast remains on track.
..Weinman.. 04/20/2026
.PREV DISCUSSION... /ISSUED 1052 AM CDT Mon Apr 20 2026/
...Synopsis...
An upper impulse will continue to pose a risk of scattered
thunderstorms over parts of NM and south/west TX through the
afternoon, with activity spreading into north-central TX late
tonight.
Other thunderstorms are possible this afternoon and evening over
south FL in a moist and marginally unstable air mass, along the
coast of southern New England, and over portions of OR/WA. In all
areas, weak instability will preclude the risk of organized severe
storms.
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TS7n6p
