SPC AC 311703
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1203 PM CDT Tue Mar 31 2020
Valid 011200Z - 021200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
General thunderstorms are forecast across portions of the contiguous
United States on Wednesday. A few storms may produce small hail over
An upper trough will exit the East Coast, with high pressure
bringing cooler and drier conditions to the eastern CONUS behind a
cold front. This front will affect portions of south FL early in the
day with scattered showers, but will quickly move east.
To the west, multiple waves will rotate around an upper trough over
the Northwest, with a leading wave ejecting north across the Dakotas
during the day. Little if any instability will be present with this
feature. By evening, warm advection will increase over the northern
Plains with a nocturnal southerly low-level jet. The presence of
cool midlevel temperatures and a plume of 50s F surface dewpoints
upstream will support widely-scattered thunderstorms, mainly across
NE. While the stronger storms may produce small hail, severe weather
is not expected.
Elsewhere, daytime heating along with very cold temperatures aloft
beneath the upper trough will result in isolated thunderstorms over
northern OR and ID, possibly producing graupel.
CLICK TO GET WUUS02 PTSDY2 PRODUCT
NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 0600Z