117
ACUS01 KWNS 210032
SWODY1
SPC AC 210031
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0631 PM CST THU FEB 20 2025
VALID 210100Z - 211200Z
..NO THUNDERSTORM AREAS FORECAST
..SUMMARY
THE RISK FOR THUNDERSTORMS APPEARS NEGLIGIBLE ACROSS THE U.S
TONIGHT.
..01Z UPDATE
WEAK BOUNDARY-LAYER DESTABILIZATION HAS OCCURRED BENEATH THE
MID-LEVEL COLD CORE (INCLUDING 500 MB TEMPS OF -24 TO -26 C) NOW
OVERSPREADING SOUTHEASTERN UTAH/WESTERN COLORADO AND ADJACENT
PORTIONS OF NORTHERN ARIZONA/NEW MEXICO. ALTHOUGH FORECAST
SOUNDINGS (AND THE RECENT GRAND JUNCTION RAOB) APPEAR MARGINALLY
CONDUCIVE TO CONVECTION CAPABLE OF PRODUCING LIGHTNING, THERE HAS
BEEN NONE EVIDENT IN LIGHTNING DETECTION TO THIS POINT. WITH THE
ONSET OF BOUNDARY-LAYER COOLING TO THE WEST OF THE CONTINENTAL
DIVIDE DURING THE NEXT COUPLE OF HOURS, AND THE GRADUAL EASTWARD
ADVECTION OF THE COLD CORE ABOVE A COLD/STABLE LOW-LEVEL ENVIRONMENT
TO THE EAST OF THE DIVIDE THIS EVENING/OVERNIGHT, ANY POTENTIAL FOR
LIGHTNING THAT CURRENTLY EXISTS SHOULD BECOME MORE NEGLIGIBLE.
..KERR.. 02/21/2025
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