416
FXUS01 KWBC 020742
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
342 AM EDT SAT SEP 02 2023
VALID 12Z SAT SEP 02 2023 - 12Z MON SEP 04 2023
...THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL OVER THE PARTS OF
THE SOUTHWEST/GREAT BASIN ON SATURDAY AND GREAT BASIN/NORTHERN
INTERMOUNTAIN REGION ON SUNDAY...
...THERE IS AN ELEVATED RISK OF FIRE WEATHER OVER PARTS OF THE
CENTRAL PLAINS ON SATURDAY, EXTENDING INTO UPPER MISSISSIPPI
VALLEY ON SUNDAY...
MOISTURE STREAMING NORTHWARD OVER NORTHWESTERN MEXICO AND
UPPER-LEVEL ENERGY WILL AID IN PRODUCING SHOWERS AND THUNDERSTORMS
WITH HEAVY RAIN OVER PARTS OF ARIZONA, SOUTHERN UTAH, SOUTHEASTERN
NEVADA, AND EXTREME SOUTHEASTERN CALIFORNIA. THEREFORE, THE WPC
HAS ISSUED A SLIGHT RISK OF EXCESSIVE RAINFALL WITH THESE
THUNDERSTORMS OVER PARTS OF THE SOUTHWEST/GREAT BASIN THROUGH
SUNDAY 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 SUNDAY, MOISTURE AND UPPER-LEVEL ENERGY WILL MOVE NORTHEASTWARD
OVER PARTS OF THE GREAT BASIN AND NORTHERN INTERMOUNTAIN REGION.
THE AREA OF SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WILL ALSO
MOVE NORTHEASTWARD OVER NORTHWESTERN UTAH, SOUTHEASTERN IDAHO, AND
NORTHWESTERN WYOMING. THEREFORE, THE WPC HAS ISSUED A SLIGHT RISK
OF EXCESSIVE RAINFALL WITH THESE THUNDERSTORMS OVER PARTS OF THE
GREAT BASIN/NORTHERN INTERMOUNTAIN REGION FROM SUNDAY INTO 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.
IN ADDITION, AN UPPER-LEVEL LOW OVER NORTHERN CALIFORNIA AND
OREGON WILL CREATE RAIN OVER PARTS OF THE PACIFIC NORTHWEST AND
NORTHERN CALIFORNIA ON SATURDAY AND SUNDAY.
MEANWHILE, UPPER-LEVEL ENERGY OVER THE CENTRAL GULF COAST AND
TROPICAL MOISTURE STREAMING NORTHWARD OVER THE CENTRAL/EASTERN
GULF COAST WILL PRODUCE SHOWERS AND THUNDERSTORMS OVER THE REGION
THROUGH MONDAY.
FURTHERMORE, GUSTY WIND, LOW RELATIVE HUMIDITY, AND DRY FUELS HAVE
PROMPTED THE SPC TO ISSUE AN ELEVATED RISK OF FIRE WEATHER OVER
PARTS OF THE CENTRAL PLAINS ON SATURDAY. ON SUNDAY, THE GUSTY
WIND, LOW RELATIVE HUMIDITY, AND DRY FUELS WILL EXTEND INTO PARTS
OF THE UPPER MISSISSIPPI VALLEY, PROMPTING THE SPC TO HAVE AN
ELEVATED RISK OF FIRE WEATHER OVER PARTS OF THE CENTRAL PLAINS
INTO THE UPPER MISSISSIPPI VALLEY.
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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