232
FXUS01 KWBC 070759
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
358 AM EDT WED JUN 07 2023
VALID 12Z WED JUN 07 2023 - 12Z FRI JUN 09 2023
...THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL OVER PARTS OF THE
CENTRAL/SOUTHERN ROCKIES/HIGH PLAINS INTO THE NORTHERN ROCKIES ON
WEDNESDAY AND OVER PARTS OF THE NORTHERN INTERMOUNTAIN
REGION/NORTHERN ROCKIES ON THURSDAY...
...AIR QUALITY ALERTS OVER PARTS OF THE UPPER GREAT LAKES TO THE
NORTHEAST...
UPPER-LEVEL IMPULSES AND MOISTURE TRAPPED UNDER AN UPPER-LEVEL
RIDGE FROM THE NORTH INTERMOUNTAIN REGION TO THE UPPER MISSISSIPPI
VALLEY AND SOUTHWARD TO THE SOUTH ROCKIES TO THE CENTRAL GULF
COAST WILL PRODUCE SHOWERS AND THUNDERSTORMS THROUGH FRIDAY. SOME
OF THE SHOWERS AND THUNDERSTORMS WILL CREATE HEAVY RAIN OVER PARTS
OF NORTHEASTERN NEW MEXICO, THE TEXAS PANHANDLE, AND COLORADO ON
WEDNESDAY. THEREFORE, THE WPC HAS ISSUED A SLIGHT RISK OF
EXCESSIVE RAINFALL OVER PARTS OF THE SOUTHERN ROCKIES, SOUTHERN
HIGH PLAINS, AND CENTRAL ROCKIES ON WEDNESDAY INTO THURSDAY
MORNING. THE ASSOCIATED HEAVY RAIN WILL CREATE MAINLY LOCALIZED
AREAS OF FLASH FLOODING, WITH URBAN AREAS, ROADS, AND SMALL
STREAMS THE MOST VULNERABLE.
ANOTHER AREA OF HEAVY RAIN WILL DEVELOP OVER PARTS OF MONTANA AND
WYOMING, ALSO ON WEDNESDAY. THEREFORE, THE WPC HAS ISSUED A SLIGHT
RISK OF EXCESSIVE RAINFALL OVER PARTS OF THE NORTHERN ROCKIES ON
WEDNESDAY INTO THURSDAY MORNING. THE ASSOCIATED HEAVY RAIN WILL
CREATE MAINLY LOCALIZED AREAS OF FLASH FLOODING, WITH URBAN AREAS,
ROADS, AND SMALL STREAMS THE MOST VULNERABLE.
ON THURSDAY, THE THREAT OF EXCESSIVE RAINFALL ENDS OVER THE
SOUTHERN ROCKIES, SOUTHERN HIGH PLAINS, AND CENTRAL ROCKIES.
HOWEVER, THE THREAT OF EXCESSIVE RAINFALL CONTINUES OVER PARTS OF
IDAHO, MONTANA, AND WYOMING. THEREFORE, THE WPC HAS ISSUED A
SLIGHT RISK OF EXCESSIVE RAINFALL OVER PARTS OF THE NORTHERN
INTERMOUNTAIN REGION/NORTHERN ROCKIES FROM THURSDAY INTO FRIDAY
MORNING. THE ASSOCIATED HEAVY RAIN WILL CREATE MAINLY LOCALIZED
AREAS OF FLASH FLOODING, WITH URBAN AREAS, ROADS, AND SMALL
STREAMS THE MOST VULNERABLE.
MOREOVER, AN UPPER-LEVEL LOW OVER SOUTHERN CALIFORNIA WILL SLOWLY
MOVE INLAND TO THE GREAT BASIN WHILE WEAKENING THROUGH FRIDAY. AS
A RESULT, THE SYSTEM WILL PRODUCE SHOWERS AND THUNDERSTORMS OVER
PARTS OF THE STATE AND THE PACIFIC NORTHWEST/GREAT BASIN THROUGH
FRIDAY. ADDITIONALLY, A WEAK FRONT MOVING FROM THE MID-ATLANTIC,
OHIO VALLEY, AND MIDDLE MISSISSIPPI VALLEY SOUTHWARD TO THE
SOUTHEAST TO THE CENTRAL GULF COAST, LOWER MISSISSIPPI VALLEY, AND
CENTRAL/SOUTHERN PLAINS BY FRIDAY. SHOWERS AND THUNDERSTORMS WILL
DEVELOP ALONG AND AHEAD OF THE BOUNDARY ON WEDNESDAY INTO FRIDAY
MORNING.
MEANWHILE, AN UPPER-LEVEL LOW OVER NEW ENGLAND CONTINUES OVER THE
REGION THROUGH FRIDAY. ON WEDNESDAY, RAIN AND DRIZZLE WILL DEVELOP
OVER PARTS OF THE NORTHEAST THROUGH FRIDAY.
WILDFIRE SMOKE MOVING SOUTHWARD OUT OF CANADA AND OVER THE
NORTHERN PART OF THE COUNTRY HAS TRIGGERED AIR QUALITY ALERTS OVER
PARTS OF THE NORTHEAST INTO THE SOUTHERN MID-ATLANTIC.
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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