755
FXUS01 KWBC 101928
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
227 PM EST SUN DEC 10 2023
VALID 00Z MON DEC 11 2023 - 00Z WED DEC 13 2023
...SNOW OVER PARTS OF THE NORTHERN INTERMOUNTAIN REGION AND
NORTHERN/CENTRAL ROCKIES AND HEAVY SNOW OVER PARTS OF THE HIGHER
ELEVATIONS OF NEW YORK STATE/NORTHERN NEW ENGLAND...
...THERE IS A MODERATE TO SLIGHT RISK OF EXCESSIVE RAINFALL OVER
PARTS OF NEW ENGLAND INTO MONDAY EVENING...
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE SOUTHERN MID-ATLANTIC AND A SECOND AREA OVER PARTS OF THE
EASTERN GULF COAST...
A FRONT EXTENDING FROM EASTERN CANADA TO THE EASTERN GULF COAST
WILL SLOWLY MOVE OFF THE EASTERN SEABOARD BY MONDAY AFTERNOON.
SHOWERS AND THUNDERSTORMS WILL DEVELOP ALONG AND AHEAD OF THE
FRONT OVER PARTS OF THE MID-ATLANTIC TO THE SOUTHEAST, WITH SOME
THUNDERSTORMS BECOMING SEVERE. THEREFORE, THE SPC HAS ISSUED A
SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF THE SOUTHERN
MID-ATLANTIC AND A SECOND AREA OVER THE EASTERN GULF COAST THROUGH
SUNDAY NIGHT. THE HAZARDS ASSOCIATED WITH THESE THUNDERSTORMS ARE
FREQUENT LIGHTNING, SEVERE THUNDERSTORM WIND GUSTS, A FEW
TORNADOES, AND A MINIMAL THREAT OF HAIL.
MOREOVER, MOISTURE FROM THE GULF OF MEXICO WILL POOL ALONG THE
BOUNDARY ON SUNDAY, PRODUCING HEAVY RAIN OVER PARTS OF THE
NORTHEAST. THEREFORE, THE WPC ISSUED A MODERATE RISK OF EXCESSIVE
RAINFALL OVER NEW ENGLAND THROUGH MONDAY MORNING. THE ASSOCIATED
HEAVY RAIN WILL CREATE NUMEROUS AREAS OF FLASH FLOODING.
FURTHERMORE, MANY STREAMS MAY FLOOD, POTENTIALLY AFFECTING LARGER
RIVERS.
IN ADDITION, SHOWERS AND THUNDERSTORMS WILL DEVELOP ALONG AND
AHEAD OF THE FRONT OVER PARTS OF THE EASTERN GULF COAST.
THEREFORE, THE WPC HAS ISSUED A SLIGHT RISK OF EXCESSIVE RAINFALL
WITH THESE THUNDERSTORMS OVER PARTS OF THE EASTERN GULF COAST
THROUGH SUNDAY NIGHT. THE ASSOCIATED HEAVY RAIN WILL CREATE MAINLY
LOCALIZED AREAS OF FLASH FLOODING, WITH URBAN AREAS, ROADS, AND
SMALL STREAMS THE MOST VULNERABLE.
ALSO, ON SUNDAY, AS COLD AIR MOVES IN BEHIND THE FRONT, HEAVY SNOW
WILL DEVELOP OVER PARTS OF THE HIGHER ELEVATIONS OF NEW YORK STATE
AND NORTHERN NEW ENGLAND FROM SUNDAY EVENING INTO MONDAY. SNOW
WILL ALSO DEVELOP OVER PARTS OF THE CENTRAL APPALACHIANS, AND THE
RAIN MAY CHANGE OVER TO SNOW OVER PARTS OF THE MID-ATLANTIC BEFORE
THE PRECIPITATION ENDS.
ON MONDAY, AS THE ASSOCIATED AREA OF LOW PRESSURE LINGERS OVER THE
NORTHEAST, HEAVY RAIN WILL DEVELOP OVER PARTS OF MAINE. THEREFORE,
THE WPC HAS ISSUED A SLIGHT RISK OF EXCESSIVE RAINFALL OVER PARTS
OF NORTHERN NEW ENGLAND FROM MONDAY INTO MONDAY EVENING.
THE ASSOCIATED HEAVY RAIN WILL CREATE MAINLY LOCALIZED AREAS OF
FLASH FLOODING, WITH URBAN AREAS, ROADS, AND SMALL STREAMS THE
MOST VULNERABLE. ALSO, ON MONDAY, LAKE-EFFECT SNOW WILL DEVELOP
DOWNWIND OF THE GREAT LAKES OVER PARTS OF THE NORTHEAST. FURTHER,
LAKE-EFFECT SNOW WILL DEVELOP OVER PARTS OF THE GREAT LAKES FROM
SUNDAY INTO TUESDAY.
MEANWHILE, A FRONT MOVING ONSHORE OVER THE PACIFIC NORTHWEST WILL
DISSIPATE BY LATE MONDAY MORNING. THE SYSTEM WILL PRODUCE RAIN AND
HIGH-ELEVATION SNOW OVER PARTS OF THE PACIFIC NORTHWEST THROUGH
LATE MONDAY AFTERNOON. THE STORM WILL PRODUCE SNOW OVER PARTS OF
THE NORTHERN INTERMOUNTAIN REGION AND THE NORTHERN/CENTRAL ROCKIES.
ON MONDAY, LIGHT SNOW WILL LINGER OVER PARTS OF THE NORTHERN
INTERMOUNTAIN REGION INTO THE NORTHERN ROCKIES AND NORTHERN HIGH
PLAINS.
MOREOVER, ON MONDAY, HIGH PRESSURE OVER THE LOWER MISSISSIPPI
VALLEY MOVES EASTWARD TO THE SOUTHEAST BY TUESDAY EVENING. ON THE
WEST SIDE OF THE HIGH, MOISTURE FROM THE WESTERN GULF OF MEXICO
WILL START TO STREAM NORTHWARD OVER THE SOUTHERN PLAINS, PRODUCING
LIGHT RAIN OVER PARTS OF THE WESTERN GULF COAST BY TUESDAY EVENING.
ZIEGENFELDER
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HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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