804
FXUS01 KWBC 101952
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
351 PM EDT WED JUL 10 2024
VALID 00Z THU JUL 11 2024 - 00Z SAT JUL 13 2024
...POST-TROPICAL CYCLONE BERYL TO BRING SEVERE THUNDERSTORMS,
HEAVY RAIN AND FLOODING TO PARTS OF THE NORTHEAST, NORTHERN
MID-ATLANTIC, AND NEW ENGLAND TONIGHT...
...SCATTERED FLASH FLOODING POSSIBLE ACROSS THE EASTERN
MID-ATLANTIC FRIDAY...
...DANGEROUS HEAT AND RECORD HIGH TEMPERATURES TO CONTINUE FOR
MUCH OF THE WEST THROUGH THE END OF THE WORK WEEK...
BERYL CONTINUES TO MAKE ITS TREK THROUGH THE LOWER GREAT LAKES AND
TOWARD THE NORTHEAST THIS AFTERNOON AS A POST-TROPICAL CYCLONE.
THUNDERSTORMS FORMING BOTH AHEAD OF AN APPROACHING COLD FRONT
NEARING THE MID-ATLANTIC AND ALONG/NORTH OF A WARM FRONT
STRETCHING FROM NORTHERN NEW YORK STATE TO NEW ENGLAND WILL BE
CAPABLE OF CONTAINING INTENSE RAINFALL RATES, WHICH IS LIKELY TO
PRODUCE NUMEROUS AREAS OF FLASH FLOODING. A MODERATE RISK (LEVEL
3/4) OF EXCESSIVE RAINFALL REMAINS IN EFFECT FROM NORTHERN NEW
YORK TO NORTHERN VERMONT AND NEW HAMPSHIRE, WHERE THE GREATEST
CHANCES FOR WIDESPREAD FLASH FLOODING EXISTS. ADDITIONALLY,
TORNADOES AND DAMAGING WINDS ARE POSSIBLE ACROSS THE NORTHEAST AND
MID-ATLANTIC STATES UNTIL LATE TONIGHT. RESIDENTS AND VISITORS IN
THESE REGIONS ARE REMINDED TO STAY WEATHER AWARE AND HAVE MULTIPLE
WAYS TO RECEIVE WARNINGS.
THE AFOREMENTIONED COLD FRONT ENTERING THE MID-ATLANTIC TONIGHT IS
FORECAST TO STALL ALONG THE EAST COAST TO END THE WORK WEEK, WITH
AN INCREASE IN THUNDERSTORM COVERAGE ON FRIDAY. AT LEAST A FEW
INCHES OF RAINFALL ARE FORECAST TO IMPACT AREAS FROM COASTAL SOUTH
CAROLINA TO SOUTHERN NEW JERSEY, INCLUDING MUCH OF THE EASTERN
MID-ATLANTIC. A SLIGHT RISK (LEVEL 2/4) OF EXCESSIVE RAINFALL HAS
BEEN ISSUED FOR THIS REGION ON FRIDAY TO HIGHLIGHT THE POTENTIAL
FOR SCATTERED FLASH FLOODING. NOT ONLY WILL THIS FRONTAL BOUNDARY
INCREASE RAINFALL CHANCES, BUT DANGEROUS HEAT EXPERIENCED ACROSS
THE EAST WILL GREATLY ABATE FOR THE END OF THE WEEK.
EXTREME AND RECORD-BREAKING HEAT WILL CONTINUE THROUGHOUT MUCH OF
THE WEST, WITH THE FOCUS BEGINNING TO SHIFT OUT OF THE PACIFIC
NORTHWEST AND TOWARDS THE HIGH PLAINS, WHILE REMAINING IN THE
SOUTHWEST. HIGHS ARE FORECAST TO SOAR INTO THE UPPER 90S AND
TRIPLE DIGITS FOR THESE LOCATIONS, WITH 110S AND 120S POSSIBLE IN
THE TYPICALLY HOT DESERT/INTERIOR VALLEY LOCATIONS OF CALIFORNIA,
ARIZONA, AND NEVADA. DOZENS OF DAILY HIGH TEMPERATURE RECORDS ARE
FORECAST ON THURSDAY AND FRIDAY FROM THE WEST COAST TO THE HIGH
PLAINS. EXCESSIVE HEAT WARNINGS AND HEAT ADVISORIES REMAIN IN
EFFECT FOR MUCH OF THE WESTERN UNITED STATES IN ORDER TO FURTHER
HIGHLIGHT THE DANGEROUSLY HOT TEMPERATURES. THIS LEVEL OF HEAT FOR
MANY PEOPLE WILL CREATE AN EXTREME RISK OF HEAT-RELATED ILLNESSES
WHEN ACCESS TO ADEQUATE COOLING OR HYDRATION IS NOT AVAILABLE. BE
SURE TO FOLLOW PROPER HEAT SAFETY, WHICH INCLUDES STAYING
HYDRATED, WEAR LIGHT CLOTHING, AVOID OUTDOOR ACTIVITY, AND USING
AIR CONDITIONING.
ELSEWHERE, THE COMBINATION OF POWER OUTAGES FROM HURRICANE BERYL
AND HEAT INDICES UP TO 106 DEGREES PROMPTED HEAT ADVISORIES TO BE
ISSUED ACROSS PARTS OF SOUTHEAST TEXAS. SCATTERED SHOWERS AND
STORMS ARE ALSO POSSIBLE THROUGHOUT THE MIDWEST AND SOUTHERN
ROCKIES THROUGH TONIGHT. STORMS IN THE MIDWEST COULD CONTAIN
LOCALLY HEAVY RAIN AND HAIL. FOR THE SOUTHERN ROCKIES, LOCALLY
HEAVY RAIN OVERLAPPING WITH SENSITIVE BURN SCARS COULD CREATE
CHANCES FOR ADDITIONAL ROUNDS OF FLASH FLOODING. FLOOD WATCHES ARE
IN EFFECT.
SNELL
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