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
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z