951
FXUS01 KWBC 150733
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
232 AM EST WED JAN 15 2025
VALID 12Z WED JAN 15 2025 - 12Z FRI JAN 17 2025
...CRITICAL FIRE WEATHER CONDITIONS WILL CONTINUE ACROSS COASTAL
SOUTHERN CALIFORNIA TODAY BUT IMPROVEMENT EXPECTED TOWARD END OF
WEEK...
...TEMPERATURES WILL START OFF COLD BUT WILL WARM FROM WEST TO
EAST FROM GREAT PLAINS TO APPALACHIANS THROUGH FRIDAY...
...LOCALIZED HEAVY LAKE EFFECT SNOW SHOWERS WILL BEGIN TO WANE
DOWNWIND OF THE GREAT LAKES TONIGHT BUT AT LEAST LIGHT SNOW TO
CONTINUE INTO FRIDAY...
SOUTHERN CALIFORNIA WILL MAINTAIN LOCALLY EXTREME FIRE DANGER
ACROSS PORTIONS OF VENTURA AND LOS ANGELES COUNTIES THROUGH AT
LEAST WEDNESDAY AFTERNOON WITH NORTHEASTERLY WIND GUSTS OF 30-50
MPH (ISOLATED 60 MPH GUSTS), ACROSS MOUNTAINOUS REGIONS. CRITICAL
FIRE WEATHER CONDITIONS WILL EXTEND THROUGHOUT MUCH OF THE
TRANSVERSE AND PENINSULAR RANGES TODAY AS WELL. WHILE WIND GUSTS
MAY NOT BE AS STRONG COMPARED TO VENTURA AND LOS ANGELES COUNTIES,
THE POTENTIAL FOR RAPID FIRE GROWTH AND LOCALIZED DOWNED TREES AND
POWER OUTAGES WILL STILL REMAIN. CONDITIONS LOOK TO IMPROVE DURING
THE DAY ON THURSDAY AS THE SURFACE PRESSURE GRADIENT WEAKENS AND
WINDS BEGIN TO SHIFT TOWARD WEAKLY ONSHORE.
A VERY COLD AIRMASS IN PLACE ACROSS THE MIDWEST TO EAST COAST
EARLY WEDNESDAY MORNING WILL BEGIN TO MODERATE THROUGH THE END OF
THE WEEK AS LOW LEVEL WINDS BEGIN TO SHIFT TOWARD THE WEST AND
SOUTHWEST. HOWEVER, TEMPERATURES WILL START OFF 10 TO 20 DEGREES
BELOW AVERAGE TODAY ACROSS THE OHIO VALLEY. LAKE EFFECT SNOW
SHOWERS WILL CONTINUE TO THE EAST OF LAKE ERIE AND LAKE ONTARIO
TODAY, BUT COVERAGE AND INTENSITY SHOULD BEGIN TO DIMINISH IN
ADVANCE OF A WARM FRONT APPROACHING FROM THE WEST. WHILE
TEMPERATURES WILL BE WARMING ACROSS THE GREAT LAKES AND NORTHEAST,
ANOTHER ROUND OF LIGHT TO MODERATE SNOW WILL BE ADVANCING EAST
FROM THE UPPER GREAT LAKES ON THURSDAY, REACHING THE CENTRAL
APPALACHIANS AND NORTHEAST LATER IN THE DAY ON THURSDAY. SNOWFALL
ACCUMULATIONS WITH THIS SYSTEM ARE EXPECTED TO REMAIN LOW (A
COUPLE OF INCHES AT MOST) BUT SHOULD BE BIT HIGHER FOR THE CENTRAL
APPALACHIANS WHERE LOCALIZED 6 TO 12 INCH AMOUNTS ARE FORECAST.
IN THE WAKE OF THE EASTWARD TRACKING WARM FRONT OVER THE GREAT
PLAINS, HIGH TEMPERATURES WILL WARM INTO THE 30S AND 40S TODAY AND
THURSDAY OVER THE NORTHERN PLAINS (UP TO 20 DEGREES ABOVE AVERAGE
FOR MID-JANUARY). HOWEVER, THIS WARMTH WILL BE OF A SHORT DURATION
AS THE BEGINNING OF A SURGE OF BITTER COLD AIR WILL BE ENTERING
THE NORTHERN PLAINS FRIDAY MORNING, WITH MUCH COLDER WEATHER IN
THE FORECAST FOR THE WEEKEND.
OTTO
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