910
ACUS01 KWNS 201611
SWODY1
SPC AC 201610
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1110 AM CDT THU MAR 20 2025
VALID 201630Z - 211200Z
..NO SEVERE THUNDERSTORM AREAS FORECAST
..SUMMARY
THUNDERSTORM DEVELOPMENT WILL BE POSSIBLE TODAY IN PARTS OF THE
MID-ATLANTIC AND NORTHERN ROCKIES. SEVERE WEATHER IS NOT EXPECTED.
..EASTERN NC/SOUTHEAST VA
STRONG HEATING AHEAD OF AN EASTWARD-DEVELOPING SURFACE FRONT WILL
ALLOW TEMPERATURES TO CONTINUE CLIMBING INTO THE 70S F THIS
AFTERNOON. BOUNDARY LAYER MOISTURE IS EXPECTED TO REMAIN MODEST,
WITH SURFACE DEWPOINTS GENERALLY REACHING THE MID/UPPER 50S F IN A
NARROW CORRIDOR JUST AS THE SURFACE FRONT ARRIVES. MORNING BALLOON
OBSERVATIONS FROM GSO, RNK, IAD, AND WAL SHOW VERY DRY MIDLEVELS AS
WELL. WHILE SOME MIDLEVEL MOISTENING WILL OCCUR AS STRONG MIDLEVEL
SOUTHWESTERLIES OVERSPREAD THE REGION, OVERALL AIRMASS MODIFICATION
WILL REMAIN POOR. MLCAPE VALUES ARE EXPECTED TO REMAIN STUNTED,
GENERALLY LESS THAN 100-200 J/KG. THIS MAY BE SUFFICIENT FOR A FEW
LIGHTNING FLASHES AS CONVECTION DEVELOPS DURING THE MID AFTERNOON
ALONG THE SURFACE FRONT. A WELL-MIXED BOUNDARY LAYER TO NEAR 850 MB,
WHERE 25-40 KT OF FLOW IS FORECAST, IS EVIDENT IN FORECAST
SOUNDINGS. THIS MAY SUPPORT A FEW STRONG GUSTS TO 40 KT, BUT VERY
POOR THERMODYNAMIC PROFILES SUGGEST POTENTIAL FOR SEVERE
THUNDERSTORMS SHOULD REMAIN LOW, PRECLUDING SEVERE PROBABILITIES.
..LEITMAN/SQUITIERI.. 03/20/2025
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