470
FXUS01 KWBC 300804
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT FRI MAY 30 2025
VALID 12Z FRI MAY 30 2025 - 12Z SUN JUN 01 2025
...A LOW PRESSURE SYSTEM WILL BRING A ROUND OF MODERATE TO HEAVY
RAIN AND GUSTY WINDS FROM THE OHIO VALLEY TO THE MID-ATLANTIC
STATES TODAY THEN ACROSS NEW ENGLAND ON SATURDAY...
...SEVERE THUNDERSTORMS POSSIBLE LATER TODAY FOR THE MID-ATLANTIC
AND THE SOUTHEAST...
...HEAT RISK EXPECTED TO REACH MAJOR LEVEL FOR INTERIOR CALIFORNIA
AND PORTIONS OF THE SOUTHWEST FRIDAY AND SATURDAY...
A LOW PRESSURE SYSTEM CURRENTLY DEVELOPING OVER THE MIDWEST IS
FORECAST TO TRACK ACROSS THE NORTHERN MID-ATLANTIC BY TONIGHT AND
INTENSIFY TO A RATHER STRONG SYSTEM FOR LATE MAY AS IT REACHES NEW
ENGLAND ON SATURDAY. A ROUND OF MODERATE TO HEAVY RAIN ALONG WITH
INCREASINGLY GUSTY WIND CAN BE EXPACTED ALONG THE TRACK OF THIS
LOW PRESSURE SYSTEM. THE HIGHEST CHANCE OF HEAVY RAIN WILL BE
ACROSS THE OHIO VALLEY TODAY AND THEN INTO THE NORTHERN
MID-ATLANTIC BY TONIGHT. SOME THUNDERSTORMS EMBEDDED WITHIN THE
RAIN CAN BE STRONG TO SEVERE, POSSIBLY RESULTING IN LOCAL AREAS OF
FLASH FLOODING. THE LOW IS FORECAST TO DEEPEN FURTHER AS THE
CENTER TRACKS NORTHEASTWARD THROUGH NEW ENGLAND ON SATURDAY WITH A
SWATH OF MODERATE TO HEAVY RAIN ACROSS THE INTERIOR SECTIONS,
ALONG WITH GUSTY WIND EXPANDING ACROSS THE NORTHEAST. FROM THE
MID-ATLANTIC SOUTHWARD INTO THE SOUTHEAST, LINES OF THUNDERSTORMS
COULD CONTAIN SEVERE WEATHER AS A COLD FRONT ASSOCIATED WITH THE
INTENSIFYING SYSTEM SWEEPS ACROSS THE REGION LATER TODAY INTO
TONIGHT. THE COLD FRONT WILL MOVE OFF THE EAST COAST LATER
TONIGHT BUT THE INSTABILITY ASSOCIATED WITH A COLD UPPER-LEVEL
TROUGH COULD TRIGGER SCATTERED THUNDERSTORMS ACROSS THE
MID-ATLANTIC REGION EVEN THOUGH TEMPERATURES WILL BE COOLER BEHIND
THE COLD FRONT ON SATURDAY. BY SATURDAY NIGHT INTO SUNDAY
MORNING, A REINFORCING COLD FRONT WILL BRING TEMPERATURES FURTHER
DOWN INTO THE 40S AND 50S FROM ALL OF THE GREAT LAKES THROUGH THE
NORTHEAST AND DOWN INTO THE MID-ATLANTIC.
MEANWHILE, SCATTERED THUNDERSTORMS ASSOCIATED WITH THE TRAILING
COLD FRONT ARE EXPECTED ACROSS THE DEEP SOUTH TODAY BEFORE PUSHING
OFF THE GULF COAST BY TONIGHT. IN CONTRAST TO THE RAIN AND
COOLING TREND IN THE EASTERN U.S., A STRONG RIDGE OF HIGH PRESSURE
WILL BRING HEAT AND PERSISTENT DRY WEATHER ACROSS THE WESTERN U.S.
AND INTO THE NORTHERN PLAINS. IN FACT, RECORD HIGH TEMPERATURES
WILL BE THREATENED ACROSS INTERIOR NORTHERN CALIFORNIA TODAY,
EXPANDING INTO THE GREAT BASIN, IDAHO, AND AS FAR NORTH AS WESTERN
MONTANA ON SATURDAY. THE ANTICIPATED HEAT IN THE SOUTHWEST FOR
THE NEXT COUPLE OF DAYS HAS LED TO THE ISSUANCE OF EXTREME HEAT
WARNINGS FOR THE DANGEROUS HEAT FOR PORTIONS OF SOUTHERNMOST
NEVADA, SOUTHEAST CALIFORNIA, AND NORTHWESTERN MOST ARIZONA.
DRINKING PLENTY OF WATER, WEARING LIGHT COLORED CLOTHING, AND
STAYING IN AIR CONDITIONED AREAS IS ADVISED AS TEMPERATURES SOAR
AS HIGH AS THE MID 110S FAHRENHEIT IN LOWER DESERT LOCATIONS LIKE
DEATH VALLEY, CALIFORNIA. A COLD FRONT FROM THE PACIFIC IS
FORECAST TO BRING MARKED COOLING INTO THE PACIFIC NORTHWEST LATER
ON SATURDAY INTO SUNDAY BUT WITH MINIMAL RAINFALL EXPECTED THROUGH
EARLY ON SUNDAY WITH THE COMMENCEMENT OF JUNE.
KONG
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