SPC AC 011922
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0222 PM CDT Wed Apr 01 2020
Valid 012000Z - 021200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM WESTERN
NEBRASKA INTO CENTRAL SOUTH DAKOTA...
There remains a low chance of marginal hail from western Nebraska
into South Dakota late today and overnight.
No changes were made to the previous probabilities as a narrow
corridor of thunderstorms is possible along and north of the front
from western NE into central SD. While small hail is most probable,
a 1" hail report cannot be ruled out.
.PREV DISCUSSION... /ISSUED 1042 AM CDT Wed Apr 01 2020/
Latest surface analysis shows a cold front sagging southward across
parts of SD into western NE. This boundary will move into a
slightly more moist and marginally unstable air mass through the
day, with an increasing risk of showers and a few thunderstorms by
late afternoon. Present indications are that a capping inversion
will preclude thunderstorms ahead of the front, and that the primary
risk will be elevated storms that form atop the cooler/stable
near-surface air mass. A few of these storms may produce hail, but
the overall severe risk appears quite marginal.
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