SPC AC 240627
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1227 AM CST Wed Nov 24 2021
Valid 251200Z - 261200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Isolated thunderstorms are possible from the Texas Hill
Country/south Texas into the Arklatex region, but severe-storm
potential is currently low.
...Synopsis...
An upper trough is expected to extend from western Ontario
southwestward across the Plains and Southwest through the central
Baja Peninsula early Thursday morning. Medium-range guidance is in
good agreement that this upper trough will fully bifurcate during
the period, with the northern portion continuing
eastward/southeastward and the southern part developing into a
closed circulation over the central Baja Peninsula.
At the surface, a cold front is forecast to extend from a low over
far northeastern Ontario southwestward to the Edwards Plateau in TX
Thursday morning. Modest low-level moisture and buoyancy are
expected to be in place ahead of this front from the TX Hill Country
into the Arklatex, and showers and isolated thunderstorms will
likely be ongoing in this region at the start of the period. Much of
the stronger southwesterly flow aloft will displaced north and west
of the surface cold front, and this displacement will limit the
overall severe potential. Even so, a few organized/strong updrafts
capable of an isolated damaging wind gust and/or marginal hail could
occur, particularly as storms along the front interact with any
pre-frontal warm sector development. The cold front is expected to
move off the TX coast by Thursday evening, with stable conditions in
its wake.
Dry and stable conditions are expected elsewhere across the Plains
as well as over the remaining portions of the CONUS.
..Mosier.. 11/24/2021
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