Bevo
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As of today, got a 15% risk issued for Days 4 and 5 for Kansas, Oklahoma, and Texas.
ZCZC SPCSWOD48 ALL
ACUS48 KWNS 310843
SPC AC 310843
Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0343 AM CDT Mon Oct 31 2022
Valid 031200Z - 081200Z
...DISCUSSION...
A potent upper trough over the western U.S. early Day 4/Thu will
develop a closed low as it shifts east toward the Four Corners
vicinity by Day 5/Fri, before emerging over the Plains on Day 6/Sat.
As this system develops eastward, strong deep-layer southwesterly
flow will overspread the southern Plains to the Upper Midwest. While
uncertainty remains with respect to northward extent of Gulf
moisture return, rich Gulf moisture should reside over TX/OK and
parts of KS by Thursday evening and into Friday ahead of a
southeastward sagging cold front. Increasing moisture will support
at least modest destabilization as midlevel cooling results in
steepening lapse rates over the southern/central Plains.
Severe potential appears most likely across portions of the TX
Panhandle into northwest OK and western KS beginning Thursday
evening into the overnight hours as stronger height falls and
increasing ascent spreads eastward into western portions of the
central/southern Plains. Forecast soundings indicate thermodynamic
and shear profiles favorable for organized cells capable of all
severe hazards. On Friday, the surface front is forecast to move
slowly eastward across western TX/OK. A combination of heavy rain
and severe potential is expected, with greatest relative severe
potential likely focused across southern portions of OK into
western/central TX near and south of a surface low.
By Day 6/Sat the upper low/trough will lift northeast across the
southern Plains toward the MS Valley and Upper Midwest vicinity.
Some severe potential could continue into parts of eastern TX and
the Arklatex vicinity. However, widespread heavy rain may limit
destabilization as stronger forcing and favorable shear become
increasingly displaced to the northeast.
Forecast guidance varies considerably by Day 7/Sun into Day 8/Mon.
However, severe potential appears low by the end of the forecast
period.
..Leitman.. 10/31/2022