844
ACUS02 KWNS 161720
SWODY2
SPC AC 161718
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1118 AM CST TUE DEC 16 2025
VALID 171200Z - 181200Z
..NO SEVERE THUNDERSTORM AREAS FORECAST
..SUMMARY
ISOLATED THUNDERSTORMS ARE POSSIBLE OVER MUCH OF THE NORTHERN
ROCKIES ON WEDNESDAY, WITH A GREATER PROBABILITY ACROSS THE TEXAS
COASTAL PLAIN. SPORADIC ACTIVITY MAY ALSO OCCUR WEDNESDAY NIGHT INTO
THE MID TO LOWER MISSISSIPPI VALLEY. SEVERE STORMS ARE NOT FORECAST.
..SYNOPSIS
A STRONG UPPER TROUGH AND COLD FRONT WILL MOVE ACROSS THE PACIFIC
NORTHWEST AND NORTHERN ROCKIES ON WEDNESDAY, WITH SUBSTANTIAL
COOLING ALOFT AND STRONG WINDS. DAYTIME HEATING WILL LEAD TO AREAS
OF WEAK INSTABILITY, WITH SCATTERED LIGHTNING POSSIBLE ESPECIALLY
OVER ID AND WESTERN MT/WY. OVERNIGHT, A STRONG COLD FRONT WILL SURGE
SOUTH ACROSS THE GREAT PLAINS, AND SPORADIC LIGHTNING MAY OCCUR WITH
ELEVATED/WEAK CONVECTION.
SOUTHEAST OF THIS SYSTEM, A LOW-LATITUDE WAVE WILL BE LOCATED OVER
SOUTHERN TX, WITH COOL MIDLEVEL TEMPERATURES PRESENT. THIS WILL AID
DESTABILIZATION DESPITE RELATIVELY COOL SURFACE TEMPERATURES.
DEWPOINTS IN THE 60S F WILL BE COMMON ACROSS THE COASTAL PLAIN AND
PERHAPS TOWARD THE ARKLATEX LATE, HOWEVER, GIVEN THE SURFACE HIGH TO
THE EAST, LOW-LEVEL TRAJECTORIES WILL FAVOR COOL SURFACE
TEMPERATURES AND ELEVATED INSTABILITY IN MOST AREAS.
..JEWELL.. 12/16/2025
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