Subj : DAY1SVR: Day 1 Convective Outlook
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Tue Jun 06 2023 00:47:13

ACUS01 KWNS 060047
SWODY1
SPC AC 060045

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0745 PM CDT Mon Jun 05 2023

Valid 060100Z - 061200Z

....THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
NORTH-CENTRAL MONTANA...

....SUMMARY...
Isolated severe thunderstorms associated with wind damage and hail
will be possible in parts of north-central Montana early this
evening.

....North-central Montana...
Latest water vapor imagery shows an upper-level trough from western
Canada extending southward into the Pacific Northwest. Ahead of the
trough, an axis of moderate instability is located from central
Wyoming into central Montana. Scattered thunderstorms are ongoing
along the western edge of the stronger instability, near and to the
east of the I-15 corridor north of Great Falls. The Great Falls 00Z
sounding has some instability, with MLCAPE near 1200 J/kg and 0-3 km
lapse rates around 8.5 C/km. This may be enough for isolated and
marginally severe wind gusts associated with the stronger multicells
over the next hour or two. Hail will also be possible with the
stronger updrafts.

...Broyles.. 06/06/2023

$$

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