247
FXUS01 KWBC 290733
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
332 AM EDT TUE OCT 29 2024
VALID 12Z TUE OCT 29 2024 - 12Z THU OCT 31 2024
...MODERATE TO HEAVY SNOW OVER PARTS OF THE NORTHERN/CENTRAL
ROCKIES ON TUESDAY...
...TEMPERATURES WILL BE 20 TO 35 DEGREES ABOVE AVERAGE OVER PARTS
OF THE CENTRAL PLAINS TO THE GREAT LAKE/OHIO VALLEY...
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE MIDDLE/LOWER MISSISSIPPI VALLEY AND CENTRAL/SOUTHERN PLAINS ON
WEDNESDAY...
A WAVE OF LOW PRESSURE ALONG A FRONT OVER THE GREAT BASIN/CENTRAL
ROCKIES WILL MOVE NORTHEASTWARD TO THE UPPER MISSISSIPPI VALLEY BY
THURSDAY. AHEAD OF THE FRONT, TEMPERATURES WILL BE 20 TO 35
DEGREES ABOVE AVERAGE OVER PARTS OF THE CENTRAL PLAINS TO THE
GREAT LAKE/OHIO VALLEY. A WARM FRONT EXTENDING FROM THE UPPER
MISSISSIPPI VALLEY TO THE OHIO VALLEY MOVES NORTHEASTWARD INTO
EASTERN CANADA BY WEDNESDAY. AHEAD OF THE WARM FRONT, SHOWERS AND
THUNDERSTORMS WILL DEVELOP OVER PARTS OF THE GREAT LAKES, ENDING
BY TUESDAY AFTERNOON. ON TUESDAY EVENING, RAIN WILL DEVELOP OVER
PARTS OF THE LOWER GREAT LAKES/NORTHEAST AND CONTINUE INTO
WEDNESDAY AFTERNOON.
ON TUESDAY, A WAVE OF LOW PRESSURE WILL PRODUCE MODERATE TO HEAVY
SNOW OVER PARTS OF THE NORTHERN/CENTRAL ROCKIES AND HIGHER
ELEVATIONS OF THE EASTERN GREAT BASIN. RAIN WILL ALSO DEVELOP OVER
PARTS OF THE LOWER ELEVATIONS OF THE SOUTHWEST, GREAT BASIN, AND
CENTRAL ROCKIES.
MOREOVER, WEAK ONSHORE FLOW OFF THE PACIFIC WILL PRODUCE RAIN OVER
PARTS OF THE PACIFIC NORTHWEST THROUGH LATE TUESDAY EVENING. LIGHT
SNOW WILL CONTINUE ON WEDNESDAY OVER PARTS OF THE NORTHERN/CENTRAL
ROCKIES THROUGH LATE WEDNESDAY NIGHT.
MEANWHILE, SOUTHEASTERLY FLOW OFF THE GULF OF MEXICO WILL CREATE
SCATTERED SHOWERS AND THUNDERSTORMS OVER PARTS OF THE WESTERN GULF
COAST ON TUESDAY INTO WEDNESDAY. SIMILARLY, EASTERLY FLOW OFF THE
ATLANTIC WILL PRODUCE SHOWERS AND THUNDERSTORMS OVER PARTS OF
FLORIDA THROUGH THURSDAY MORNING.
FURTHER, MOIST AIR FLOWING NORTHWARD OVER THE PLAINS WILL EXTEND
INTO THE UPPER GREAT LAKES ON WEDNESDAY, CREATING SHOWERS AND
THUNDERSTORMS OVER PARTS OF THE NORTHERN PLAINS AND UPPER
MISSISSIPPI VALLEY. SHOWERS AND STRONG TO SEVERE THUNDERSTORMS
WILL DEVELOP AHEAD OF THE FRONT OVER PARTS OF THE MIDDLE
MISSISSIPPI VALLEY TO THE CENTRAL/SOUTHERN PLAINS. THEREFORE, THE
SPC HAS ISSUED A MARGINAL RISK (LEVEL 1/5) OF SEVERE THUNDERSTORMS
OVER PARTS OF THE MIDDLE MISSISSIPPI VALLEY TO CENTRAL/SOUTHERN
PLAINS THROUGH WEDNESDAY MORNING. THE HAZARDS ASSOCIATED WITH
THESE THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE THUNDERSTORM
WIND GUSTS, HAIL, AND A MINIMAL THREAT OF TORNADOES.
ON WEDNESDAY, SHOWERS AND SEVERE THUNDERSTORMS WILL DEVELOP ALONG
AND AHEAD OF THE FRONT OVER PARTS OF THE MIDDLE/LOWER MISSISSIPPI
VALLEY AND CENTRAL/SOUTHERN PLAINS. THEREFORE, THE SPC HAS ISSUED
A SLIGHT RISK (LEVEL 2/5) OF SEVERE THUNDERSTORMS OVER THESE AREAS
FROM WEDNESDAY THROUGH THURSDAY MORNING. THE HAZARDS ASSOCIATED
WITH THESE THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE
THUNDERSTORM WIND GUSTS, HAIL, AND A FEW TORNADOES.
FURTHERMORE, MODERATE TO HEAVY RAIN WILL DEVELOP ALONG THE FRONT
PARTS OF THE MISSISSIPPI VALLEY AND THE CENTRAL/SOUTHERN PLAINS.
THEREFORE, THE WPC HAS ISSUED A MARGINAL RISK (LEVEL 1/4) OF
EXCESSIVE RAINFALL OVER PARTS OF THE MISSISSIPPI VALLEY AND PARTS
OF THE CENTRAL/SOUTHERN PLAINS FROM WEDNESDAY THROUGH THURSDAY
MORNING. THE ASSOCIATED HEAVY RAIN WILL CREATE LOCALIZED AREAS OF
FLASH FLOODING, AFFECTING AREAS THAT EXPERIENCE RAPID RUNOFF WITH
HEAVY RAIN.
ELSEWHERE, ANOTHER FRONT WILL COME ONSHORE OVER THE PACIFIC
NORTHWEST AND CALIFORNIA ON WEDNESDAY INTO EARLY THURSDAY MORNING.
THE SYSTEM WILL PRODUCE RAIN AND HIGHER-ELEVATION SNOW OVER PARTS
OF THE NORTHWEST INTO NORTHERN/CENTRAL CALIFORNIA.
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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