615
FXUS01 KWBC 280800
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
300 AM EST TUE NOV 28 2023
VALID 12Z TUE NOV 28 2023 - 12Z THU NOV 30 2023
...ACTIVE LAKE-EFFECT SNOWFALL DOWNWIND OF THE GREAT LAKES WILL
CONTINUE TUESDAY, PRODUCING LOCALLY HEAVY SNOWFALL AMOUNTS...
...BELOW AVERAGE TEMPERATURES CONTINUE FOR THE EAST COAST AND
SOUTH WITH FREEZE-RELATED ADVISORIES IN EFFECT FROM THE FLORIDA
PANHANDLE TO COASTAL SOUTH CAROLINA...
...MOSTLY DRY CONDITIONS FOR THE WESTERN AND CENTRAL U.S. AS A
WARM UP COMES TO THE PLAINS/MISSISSIPPI VALLEY...
EMBEDDED SHORTWAVES IN NORTHWESTERLY CYCLONIC FLOW ROUNDING A DEEP
UPPER-LEVEL LOW OVER CANADA WILL CONTINUE TO PRODUCE SNOW DOWNWIND
OF THE GREAT LAKES TUESDAY, PARTICULARLY LAKES ERIE AND ONTARIO.
HERE, ADDITIONAL FORECAST SNOW TOTALS OF 8-16 INCHES, WITH LOCALLY
HIGHER AMOUNTS, ARE EXPECTED THROUGH WEDNESDAY MORNING, BRINGING
STORM TOTAL SNOWFALL WELL ABOVE 2 FEET FOR SOME LOCATIONS. HEAVY
SNOW RATES AND GUSTY WINDS WILL MAKE TRAVEL TREACHEROUS. SOME
LIGHTER AMOUNTS OF AROUND 2-4 INCHES WILL REMAIN POSSIBLE DOWNWIND
OF LAKES SUPERIOR AND MICHIGAN. MUCH OF THE REST OF THE COUNTRY
WILL REMAIN DRY OVER THE NEXT COUPLE OF DAYS. ONE EXCEPTION WILL
BE IN COASTAL CALIFORNIA WHERE AN APPROACHING UPPER-LEVEL
TROUGH/PACIFIC SYSTEM WILL BRING SOME LIGHT TO MODERATE SHOWERS.
AS THIS UPPER-LEVEL TROUGH CONTINUES SOUTHEASTWARD, SOME LOWER
ELEVATION/VALLEY RAIN AND HIGHER ELEVATION SNOW WILL BE POSSIBLE
BY LATE WEDNESDAY FOR THE FOUR CORNERS REGION. ANY SNOW
ACCUMULATIONS LOOK TO REMAIN LIGHT AND LIMITED TO HIGHER MOUNTAIN
PEAKS, AT LEAST THROUGH THURSDAY MORNING. INCREASING MOIST
SOUTHERLY FLOW FROM THE GULF AHEAD OF THIS SYSTEM SHOULD ALSO
BRING SOME SHOWERS AND THUNDERSTORMS TO PORTIONS OF THE SOUTHERN
PLAINS/LOWER MISSISSIPPI VALLEY WEDNESDAY NIGHT.
THE OTHER MAIN STORY OVER THE NEXT COUPLE OF DAYS WILL BE THE
CHILLY, BELOW AVERAGE TEMPERATURES FOR THE EAST COAST AND PORTIONS
OF THE SOUTH. FORECAST HIGHS TUESDAY AND WEDNESDAY WILL BE IN THE
20S AND 30S FOR NEW ENGLAND, 30S AND 40S FOR THE MID-ATLANTIC, 40S
AND 50S FOR THE CAROLINAS, AND 50S AND 60S FROM SOUTHERN TEXAS
ALONG THE GULF COAST INTO THE SOUTHEAST AND ALL BUT SOUTH FLORIDA.
THE COLDEST MORNING LOWS OF THE SEASON SO FAR ARE EXPECTED FROM
THE MID-ATLANTIC THROUGH THE SOUTHEAST WEDNESDAY MORNING, WITH
WIDESPREAD 20S FORECAST. TEMPERATURES MAY DIP TO NEAR OR BELOW
FREEZING AS FAR SOUTH AS THE FLORIDA PANHANDLE/NORTH PENINSULA
NORTHEASTWARD THROUGH COASTAL SOUTH CAROLINA. A FREEZE WATCH HAS
BEEN ISSUED FOR THE REGION AS THESE TEMPERATURES MAY DAMAGE AND
KILL SENSITIVE CROPS AND VEGETATION. MEANWHILE, UPPER-LEVEL
RIDGING MOVING EASTWARD OVER THE WESTERN PLAINS AS UPPER-LEVEL
TROUGHING GIVES WAY OVER THE MIDWEST WILL BRING A WARM-UP TO
CENTRAL PORTIONS OF THE COUNTRY. HIGHS WILL BE WELL ABOVE AVERAGE
AND IN THE 40S AND 50S FOR THE NORTHERN AND CENTRAL PLAINS. AFTER
ONE MORE CHILLY DAY TUESDAY, TEMPERATURES WILL WARM INTO THE 40S
AND 50S FOR MUCH OF THE MIDDLE AND UPPER MISSISSIPPI VALLEY
WEDNESDAY. CONDITIONS WILL BE MOSTLY SEASONABLE ACROSS THE WEST,
WITH 30S AND 40S FOR THE ROCKIES AND GREAT BASIN, 40S AND 50S FOR
THE PACIFIC NORTHWEST, 50S AND 60S FOR CALIFORNIA, AND 70S FOR THE
DESERT SOUTHWEST.
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