595
FXUS01 KWBC 280714
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
313 AM EDT MON OCT 28 2024
VALID 12Z MON OCT 28 2024 - 12Z WED OCT 30 2024
...MODERATE TO HEAVY SNOW OVER PARTS OF THE NORTHERN/CENTRAL
ROCKIES ON TUESDAY...
...TEMPERATURES WILL BE 20 TO 30 DEGREES ABOVE AVERAGE OVER PARTS
OF THE PLAINS AND MISSISSIPPI VALLEY...
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE UPPER/MIDDLE MISSISSIPPI VALLEY AND CENTRAL/SOUTHERN PLAINS ON
TUESDAY...
A FRONT EXTENDING FROM THE NORTHERN PLAINS TO THE GREAT BASIN AND
SOUTHERN CALIFORNIA WILL MOVE EASTWARD TO THE UPPER MISSISSIPPI
VALLEY/UPPER GREAT LAKES SOUTHWESTWARD TO THE SOUTHERN HIGH PLAINS
BY WEDNESDAY. AHEAD OF THE FRONT, TEMPERATURES WILL BE 20 TO 30
DEGREES ABOVE AVERAGE OVER PARTS OF THE PLAINS AND MISSISSIPPI
VALLEY.
IN THE WAKE OF THE FRONT, ONSHORE FLOW OFF THE PACIFIC WILL
PRODUCE RAIN OVER THE PACIFIC NORTHWEST AND NORTHERN CALIFORNIA
THROUGH TUESDAY NIGHT. IN ADDITION, SCATTERED LIGHT SNOW WILL
DEVELOP OVER THE HIGHEST ELEVATIONS OF THE CASCADES, THE SIERRA
NEVADA MOUNTAINS, THE NORTHERN INTERMOUNTAIN REGION, AND THE GREAT
BASIN THROUGH WEDNESDAY. LOWER-ELEVATION RAIN WILL ALSO DEVELOP
OVER PARTS OF THE GREAT BASIN, SOUTHWEST, AND NORTHERN/CENTRAL
ROCKIES.
FURTHER, INTENSIFYING UPPER-LEVEL ENERGY OVER THE FOUR CORNERS
REGION WILL AID IN PRODUCING MODERATE TO HEAVY SNOW OVER PARTS OF
THE NORTHERN/CENTRAL ROCKIES AND HIGHER ELEVATIONS OF THE EASTERN
GREAT BASIN ON TUESDAY.
MEANWHILE, SOUTHEASTERLY FLOW OFF THE GULF OF MEXICO WILL CREATE
SCATTERED RAIN OVER PARTS OF THE WESTERN GULF COAST ON MONDAY. ON
TUESDAY, THE ATMOSPHERE ALONG THE WESTERN GULF COAST WILL BECOME
MORE UNSTABLE, SO SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER
PARTS OF THE WESTERN GULF COAST. SIMILARLY, EASTERLY FLOW OFF THE
ATLANTIC WILL PRODUCE RAIN OVER PARTS OF FLORIDA ON MONDAY. ON
TUESDAY, THE ATMOSPHERE WILL BECOME MORE UNSTABLE, SO SHOWERS AND
THUNDERSTORMS WILL DEVELOP OVER PARTS OF FLORIDA.
MOREOVER, MOIST AIR WILL POOL AHEAD OF THE FRONT OVER THE GREAT
LAKES ON MONDAY, CREATING SHOWERS AND THUNDERSTORMS. RAIN WILL
DEVELOP OVER PARTS OF THE NORTHEAST ON TUESDAY INTO WEDNESDAY
MORNING AND ALSO OVER PARTS OF THE NORTHERN/CENTRAL PLAINS AND
UPPER MISSISSIPPI VALLEY ON TUESDAY.
ADDITIONALLY, MOISTURE WILL POOL ALONG THE BOUNDARY OVER PARTS OF
THE UPPER/MIDDLE MISSISSIPPI VALLEY TO CENTRAL/SOUTHERN PLAINS,
PRODUCING STRONG TO SEVERE THUNDERSTORMS. THEREFORE, THE SPC HAS
ISSUED A MARGINAL RISK (LEVEL 1/5) OF SEVERE THUNDERSTORMS OVER
PARTS OF THE UPPER/MIDDLE MISSISSIPPI VALLEY TO CENTRAL/SOUTHERN
PLAINS FROM TUESDAY INTO WEDNESDAY MORNING. THE HAZARDS ASSOCIATED
WITH THESE THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE
THUNDERSTORM WIND GUSTS, HAIL, AND A MINIMAL THREAT OF TORNADOES.
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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