326
FXUS01 KWBC 142023
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
323 PM EST TUE JAN 14 2025
VALID 00Z WED JAN 15 2025 - 00Z FRI JAN 17 2025
...EXTREMELY CRITICAL FIRE WEATHER CONDITIONS WILL CONTINUE ACROSS
COASTAL SOUTHERN CALIFORNIA THROUGH WEDNESDAY...
...MUCH BELOW AVERAGE TEMPERATURES FROM THE MIDWEST TO THE CENTRAL
APPALACHIANS THROUGH WEDNESDAY BUT WARMING INTO THE CENTRAL U.S.
STARTING WEDNESDAY...
...LOCALLY HEAVY LAKE EFFECT SNOW SHOWERS DOWNWIND OF THE GREAT
LAKES THROUGH THURSDAY...
SOUTHERN CALIFORNIA CONTINUES TO SEE INGREDIENTS FOR HIGH FIRE
DANGER: STRONG WIND GUSTS IN THE 45-70 MPH RANGE AND RELATIVE
HUMIDITIES IN THE 8-15 % RANGE. THE LOS ANGELES WEATHER FORECAST
OFFICE HAS ISSUED A PARTICULARLY DANGEROUS SITUATION RED FLAG
WARNING INTO WEDNESDAY AFTERNOON. THE ENVIRONMENT WILL BE
FAVORABLE TO RAPID FIRE GROWTH IF A FIRE DOES START OR TO CURRENT
FIRES ONGOING IN THE REGION.
A SURGE OF ARCTIC AIR IS FILTERING DOWN ACROSS THE MIDWEST AND
MOVING SOUTHEASTWARD WITH A COLD FRONT ACROSS THE OHIO VALLEY THIS
AFTERNOON. HIGH TEMPERATURES WILL BE IN THE SINGLE DIGITS ACROSS
THE NORTHERN PLAINS TODAY, AND THE HIGH TEMPERATURES WILL
GENERALLY BE IN THE 20S AND 30S FROM THE OHIO VALLEY INTO THE
EASTERN SEABOARD WEDNESDAY AND THURSDAY. LOW TEMPERATURES WILL BE
PLUMMETING INTO THE SINGLE DIGITS, EVEN NEGATIVE TEMPERATURES WILL
BE POSSIBLE ACROSS THE MIDWEST AND NORTHERN PLAINS. THE EASTERN
URBAN CORRIDOR WILL SEE ITS LOWEST TEMPERATURES ON THURSDAY
MORNING AS LOWS FALL INTO THE TEENS. SIGNS OF WARMTH WILL BE ON
THE WAY AS TEMPERATURES REBOUND IN THE CENTRAL PLAINS STARTING
WEDNESDAY WITH HIGHS CREEPING UP INTO THE 40S AND 50S AS WARM AIR
ADVECTS IN AND UPPER LEVEL TROUGHING DEPARTS. THIS WILL BEGIN TO
SPREAD EASTWARD ACROSS THE CONUS.
A WESTERLY WIND COMPONENT OVER COLD AIR AT THE SURFACE WILL
PROLONG FAVORABLE CONDITIONS FOR HEAVY LAKE EFFECT SNOW FOR THE
GREAT LAKES. EASTERN SHORES OF LAKE ONTARIO AND LAKE EERIE
CONTINUE TO SEE SOME HEAVY SNOW BANDS STREAMING INTO THE REGION.
AREAS THAT SEE THE HEAVIEST SNOW BANDS MAY STILL SEE UP TO A FOOT
OF SNOWFALL ACCUMULATIONS ALONG WITH GUSTY WINDS THAT WILL MAKE
TRAVELING HAZARDOUS. EASTERN SHORES OF LAKE MICHIGAN WILL ALSO BE
SEEING LAKE EFFECT SNOW, AND A WINTER WEATHER ADVISORY IS IN
EFFECT FOR THE POSSIBILITY OF 2-5 INCHES OF SNOW FOR THE REMAINDER
OF TODAY.
FOR AREAS NOT COVERED IN THE MAIN WEATHER STORIES, MOST OF THE
SOUTH WILL BE SEASONABLY COOL WITH HIGHS IN THE 50S AND 60S BEHIND
THE COLD FRONT. PARTS OF TEXAS AND THE NORTHERN GULF COAST MAY SEE
RAIN SHOWERS AS LOW LEVEL MOISTURE AND AN INVERTED TROUGH WIL BE
PRESENT. THE TEMPERATURES SHOULD BEGIN TO WARM UP IN THE REGION
BEGINNING ON THURSDAY AS THE UPPER LEVEL TROUGH BEGINS TO LEAVE
THE AREA AND HIGH PRESSURE BUILDS IN. MOST OF THE WEST SHOULD
GENERALLY SEE ABOVE AVERAGE TEMPERATURES AND REMAIN DRY AS UPPER
LEVEL RIDGING IS PRESENT. THE NEXT STORM SYSTEM LOOKS TO MOVE INTO
THE GREAT LAKES AND OHIO VALLEY REGION WEDNESDAY NIGHT INTO
THURSDAY AND MAY BRING THE NEXT CHANCE FOR ACCUMULATING SNOW.
WILDER
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