046
FXUS01 KWBC 072001
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
301 PM EST TUE JAN 07 2025
VALID 00Z WED JAN 08 2025 - 00Z FRI JAN 10 2025
...CRITICAL FIRE WEATHER CONDITIONS AND DAMAGING DOWNSLOPE WINDS
EXPECTED THROUGH THURSDAY ACROSS PORTIONS OF SOUTHERN CALIFORNIA
WITH EXTREMELY CRITICAL FIRE WEATHER LIKELY FOR PARTS OF LOS
ANGELES AND VENTURA COUNTIES ON WEDNESDAY...
...A DEVELOPING WINTER STORM WILL PRODUCE SNOW, SLEET, AND
FREEZING RAIN OVER PORTIONS OF OKLAHOMA, ARKANSAS, AND TEXAS
WEDNESDAY NIGHT INTO THURSDAY...
...MODERATE TO HEAVY LAKE-EFFECT SNOW DOWNWIND FROM THE GREAT
LAKES THROUGH THURSDAY...
STRONG HIGH PRESSURE WILL SETTLE ACROSS THE GREAT BASIN AND SET
THE STAGE FOR THE DEVELOPMENT OF VERY STRONG SANTA ANA WINDS OVER
SOUTHERN CALIFORNIA THROUGH THURSDAY. THE COMBINATION OF VERY
STRONG DOWNSLOPE WINDS, LOW RELATIVE HUMIDITY, AND DRY FUELS WILL
RESULT IN A SIGNIFICANT RISK OF CRITICAL FIRE WEATHER ACROSS PARTS
OF SOUTHERN CALIFORNIA THROUGH WEDNESDAY AND THURSDAY. IN FACT,
THE STORM PREDICTION CENTER HAS OUTLINED AN EXTREMELY CRITICAL
RISK OF FIRE WEATHER FOR PORTIONS OF LOS ANGELES AND VENTURA
COUNTIES ON WEDNESDAY, HIGHLIGHTING THE POTENTIAL FOR EXTREME FIRE
WEATHER BEHAVIOR SHOULD IGNITIONS OCCUR. ADDITIONALLY, DAMAGING
WIND GUSTS OF 50 TO 80 MPH ARE EXPECTED TONIGHT INTO WEDNESDAY
WITH ISOLATED GUSTS OF 80 TO 100 MPH IN THE MOUNTAINS AND
FOOTHILLS. THESE WINDS HAVE THE POTENTIAL TO CAUSE DOWNED TREES
AND POWER LINES WHICH COULD LEAD TO WIDESPREAD POWER OUTAGES.
SNOW, SLEET, AND FREEZING RAIN ARE BECOMING INCREASINGLY LIKELY
FOR PORTIONS OF THE SOUTHERN PLAINS WEDNESDAY NIGHT INTO THURSDAY
AS A WINTER STORM BEGINS TO TAKE SHAPE. ARCTIC AIR TO THE NORTH
COMBINED WITH DEVELOPING LOW PRESSURE ALONG THE GULF COAST WILL
LEAD TO WIDESPREAD WINTRY PRECIPITATION ACROSS THE REGION, WITH
SNOW FAVORED FROM TEXAS, TO OKLAHOMA, TO ARKANSAS. FARTHER SOUTH,
SNOW WILL TRANSITION TO SLEET AND FREEZING RAIN AS WARMER AIR
ALOFT OVERSPREADS BELOW FREEZING TEMPERATURES AT THE SURFACE. THIS
SYSTEM HAS THE POTENTIAL TO PRODUCE SIGNIFICANT IMPACTS WITH
HAZARDOUS DRIVING CONDITIONS POSSIBLE. AS A RESULT, WINTER STORM
WATCHES HAVE ALREADY BEEN ISSUED TO RAISE AWARENESS TO THE GROWING
WINTRY THREAT.
THE COLD, ARCTIC AIR THAT WILL SET THE STAGE FOR SIGNIFICANT
WINTRY WEATHER IN THE SOUTH WILL ALSO BE RESPONSIBLE FOR
PERSISTENT LAKE-EFFECT SNOW DOWNWIND OF THE GREAT LAKES AND ACROSS
PORTIONS OF THE CENTRAL AND NORTHERN APPALACHIANS THROUGH
THURSDAY. LAKE-EFFECT SNOWFALL ACCUMULATIONS OF 6 TO 12 INCHES ARE
EXPECTED, PARTICULARLY DOWNWIND OF LAKE ERIE AND LAKE ONTARIO.
LOCALLY HIGHER AMOUNTS OVER A FOOT ARE POSSIBLE NEAR AND TO THE
SOUTHWEST OF SYRACUSE, NEW YORK, WHICH COULD LEAD TO HAZARDOUS
DRIVING CONDITIONS.
MILLER
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