599
ACUS01 KWNS 031257
SWODY1
SPC AC 031255
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0655 AM CST FRI JAN 03 2025
VALID 031300Z - 041200Z
..NO SEVERE THUNDERSTORM AREAS FORECAST
..SUMMARY
SPORADIC LIGHTNING FLASHES MAY OCCUR THIS AFTERNOON AND EVENING OVER
PARTS OF THE COASTAL PACIFIC NORTHWEST AND NORTHERN CALIFORNIA.
SEVERE THUNDERSTORMS ARE NOT EXPECTED.
..SYNOPSIS AND DISCUSSION
A STRONG UPPER TROUGH WILL MOVE INLAND TODAY ACROSS THE NORTHWEST.
COLD MID-LEVEL TEMPERATURES (AROUND -24 TO -28 C AT 500 MB)
ASSOCIATED WITH THE TROUGH, ALONG WITH MODESTLY STEEPENED LAPSE
RATES ALOFT, SHOULD SUPPORT THE DEVELOPMENT OF WEAK INSTABILITY EVEN
THOUGH DAYTIME HEATING WILL BE MUTED BY PERSISTENT CLOUD COVER.
BEHIND A COLD FRONT, ISOLATED LIGHTNING FLASHES MAY OCCUR WITH
GENERALLY LOW-TOPPED CELLS MAINLY THIS AFTERNOON AND EVENING ALONG
PARTS OF THE OR COAST INTO NORTHERN CA. SMALL HAIL AND GUSTY WINDS
MAY OCCUR WITH THE MORE ROBUST CORES, ALTHOUGH LIMITED FORECAST
INSTABILITY AND DEEP-LAYER SHEAR ARE EXPECTED TO PRECLUDE A
MEANINGFUL THREAT FOR SEVERE THUNDERSTORMS.
..GLEASON/BENTLEY.. 01/03/2025
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page