282
FXUS01 KWBC 030702
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
302 AM EDT SUN SEP 03 2023
VALID 12Z SUN SEP 03 2023 - 12Z TUE SEP 05 2023
...THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL OVER THE PARTS OF
THE GREAT BASIN/NORTHERN INTERMOUNTAIN REGION ON SUNDAY AND
NORTHERN ROCKIES ON MONDAY...
...THERE ARE HEAT ADVISORIES OVER PARTS OF THE NORTHERN/CENTRAL
PLAINS AND UPPER MISSISSIPPI VALLEY ON SUNDAY...
...UPPER-LEVEL RIDGING WILL BUILD OVER THE GREAT LAKES/OHIO
VALLEY...
AN UPPER-LEVEL LOW OVER NORTHERN CALIFORNIA AND THE PACIFIC
NORTHWEST WILL WEAKEN AND MOVE EASTWARD TO THE NORTHERN HIGH
PLAINS BY TUESDAY. ENERGY ASSOCIATED WITH THE UPPER-LEVEL LOW WILL
MOVE OVER PARTS OF THE GREAT BASIN/NORTHERN INTERMOUNTAIN REGION,
PRODUCING SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN. THEREFORE,
THE WPC HAS ISSUED A SLIGHT RISK OF EXCESSIVE RAINFALL WITH THESE
THUNDERSTORMS OVER PARTS OF THE GREAT BASIN/NORTHERN INTERMOUNTAIN
REGION THROUGH MONDAY MORNING. THE ASSOCIATED HEAVY RAIN WILL
CREATE MAINLY LOCALIZED AREAS OF FLASH FLOODING, WITH URBAN AREAS,
ROADS, SMALL STREAMS, NARROW CRAYONS/GULLIES, AND BURN SCARS THE
MOST VULNERABLE.
ON MONDAY, AS THE ENERGY CONTINUES TO MOVE EASTWARD, SHOWERS AND
THUNDERSTORMS WITH HEAVY RAIN WILL DEVELOP OVER PARTS OF
NORTHEASTERN IDAHO, SOUTHERN MONTANA, AND NORTHERN WYOMING.
THEREFORE, THE WPC HAS ISSUED A SLIGHT RISK OF EXCESSIVE RAINFALL
WITH THESE THUNDERSTORMS OVER PARTS OF THE NORTHERN
ROCKIES/NORTHERN HIGH PLAINS FROM MONDAY INTO TUESDAY MORNING. THE
ASSOCIATED HEAVY RAIN WILL CREATE MAINLY LOCALIZED AREAS OF FLASH
FLOODING, WITH URBAN AREAS, ROADS, SMALL STREAMS, NARROW
CRAYONS/GULLIES, AND BURN SCARS THE MOST VULNERABLE.
MEANWHILE, UPPER-LEVEL RIDGING OVER THE NORTHERN/CENTRAL PLAINS
AND UPPER MISSISSIPPI VALLEY WILL PROMOTE HOT TEMPERATURES OVER
THE REGION, PROMPTING HEAT ADVISORIES ON SUNDAY. ON MONDAY, THE
UPPER-LEVEL RIDGING WILL MOVE OVER THE GREAT LAKES AND OHIO
VALLEY, ALLOWING HOT TEMPERATURES TO MOVE OVER THE AREA AND PARTS
OF THE MID-ATLANTIC.
FURTHERMORE, UPPER-LEVEL ENERGY OVER THE SOUTHERN PLAINS WILL AID
IN CREATING SHOWERS AND THUNDERSTORMS OVER PARTS OF THE LOWER
MISSISSIPPI VALLEY AND EASTERN TEXAS ON SUNDAY AND MONDAY.
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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