582
FXUS01 KWBC 051930
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
229 PM EST THU DEC 05 2024
VALID 00Z FRI DEC 06 2024 - 00Z SUN DEC 08 2024
...HEAVY LAKE-ENHANCED/LAKE-EFFECT SNOW DOWNWIND FROM LAKES ERIE
AND ONTARIO POST FRONTAL PASSAGE ...
... A REINFORCING ARCTIC AIR MASS IS OVERTAKING THE EASTERN U.S.
AND WINDY CONDITIONS BRING HAZARDOUS WIND CHILLS ...
...GENERALLY DRY AND ABOVE AVERAGE TEMPERATURES ACROSS THE WESTERN
AND CENTRAL U.S. ...
BREEZY AND BLUSTERY CONDITIONS ARE ONGOING ACROSS MUCH OF THE
EASTERN U.S. BEHIND THE COLD FRONT PASSAGE THIS AFTERNOON.
TEMPERATURES BEHIND THE FRONT ARE RATHER CHILLY WITH HIGHS IN THE
LOW 20S TO MIDDLE 30S. IN TANDEM WITH THE WITH THE WIND AND COLD,
HAZARDOUS WINTER WEATHER IS POSSIBLE ACROSS MUCH OF GREAT LAKE
REGION, NEW ENGLAND, AND THE APPALACHIANS. ACROSS MICHIGAN, THERE
ARE MULTIPLE COUNTIES UNDER WINTER STORM WARNINGS AND WINTER
WEATHER ADVISORIES, UPSTATE NEW YORK HAS COUNTIES UNDER WINTER
WEATHER WARNINGS THROUGH FRIDAY WITH HEAVY LAKE EFFECT SNOW AND
STRONG WINDS, AND WESTERN NEW YORK AND NORTHWESTERN PENNSYLVANIA
HAVE NUMEROUS WARNINGS, INCLUDING WINTER STORM WARNINGS, LAKE
EFFECT SNOW WARNING, AND EVEN A BLIZZARD WARNING FOR ERIE INTO
FRIDAY AS WELL. THE EXPECTED LAKE EFFECT SNOWFALL AMOUNTS ARE
AROUND 1-2 FEET IN SUSCEPTIBLE LAKE EFFECT AREAS WHERE BANDING
TRAINS; ADDITIONALLY, STRONG WINDS BEHIND THE FRONT WILL CONTINUE
TO CREATE LOW VISILIBILITES WITH BLOWING SNOW TO CREATE DANGEROUS
TRAVEL CONDITIONS. THE APPALACHIANS AND INTERIOR NEW ENGLAND MAY
EXPECT A 60-80 PERCENT CHANCE OF SEEING A FOOT OF SNOWFALL FALL
BEFORE THE EVENT WINDS DOWN IN THE NEXT DAY OR TWO.
THE COLD WEATHER CONDIITONS SHOULD GET ATTENTION AS A HAZARD
BEHIND THIS ARCTIC FRONT. WIND CHILLS MAY FALL INTO THE NEGATIVE
TEENS ACROSS THE MOUNTAINS OF THE APPLACHAINS FROM WEST VIRGINIA
TO NEW HAMPSHIRE WITH VALLEYS SEEING WIND CHILLS IN THE SINGLE
DIGITS AND TEENS ACROSS MUCH OF THE EAST. COLD WEATHER ADVISORIES
ARE ACTIVE ACROSS THE ALLEGHNIES MOUNTAIN RANGE IN THE
APPALACHAINS. INTO SATURDAY, ACTUAL LOW TEMPERATURES WILL BE IN
THE 20S AND TEENS. DRESS WARM, LOOK OUT FOR VULNERABLE
POPULATIONS, AND SEEK WARM WEATHER SHELTERS IF NEEDED.
MUUCH OF THE WESTERN U.S. IS SEASONABLY WARM AND DRY AS HIGH
PRESSURE DOMINATES THE REGION. HIGH TEMPERATURES WILL BE IN THE
80S ACROSS THE SOUTHWEST AND 70S AND 60S WILL PREVAIL FROM
SOUTHERN CALIFORNIA TO THE PACIFIC NORTHWEST. TEMPERATURES ARE IN
GENERAL ABOUT 5-10 DEGREES ABOVE AVERAGE. THE BIGGER WARM-UP WILL
BE OVER THE CENTRAL U.S. AS HIGH PRESSURE SHIFTS EASTWARD AND
DISPLACES THE ARCTIC AIR OVER THE REGION. TEMPERATURES WILL BE IN
THE 50S AND 60S FROM OKLAHOMA TO MONTANA BY SATURDAY, WHICH IS
ABOUT 20 DEGREES ABOVE AVERAGE FOR THIS TIME OF THE YAER.
FOR THE REMAINDER OF THE U.S., MUCH OF TEXAS AND THE CENTRAL GULF
COAST CAN EXPECT RAIN SHOWERS INTO THE WEEKEND FROM A WEAK AREA OF
LOW PRESSURE FORMING AND LIFTING NORTHWARDS ALONG A FRONT DRAPED
IN THE GULF OF MEXICO. RAIN SHOWERS AND SOME HIGH ELEVATION SNOW
WILL RETURN TO WASHINGTON STATE AND OREGON BY SATURADAY AS THE
NEXT FRONT MOVES THROUGH. LASTLY, SOME AREAS IN THE GREAT LAKES
MAY SEE ADDIITONAL SNOWFALL AND/OR COLD RAIN SHOWERS AS ANOTHER
CLIPPER SYSTEM MOVES IN THIS WEEKEND AND HELPS REINFORCE THIS
TROUGHING/COLD PATTERN FOR AT LEAST A FEW MORE DAYS.
WILDER
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