964
FXUS01 KWBC 042001
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 PM EDT THU JUL 04 2024
VALID 00Z FRI JUL 05 2024 - 00Z SUN JUL 07 2024
...HEAT IS EXPECTED TO INTENSIFY AND SPREAD FURTHER UP THE WEST
COAST MUCH OF THE WEST THROUGH THIS WEEKEND WITH RECORD-BREAKING
TEMPERATURES...
...OPPRESSIVE HEAT AND HUMIDITY ACROSS THE SOUTH TODAY WILL SHIFT
EAST INTO THE MID-ATLANTIC AND SOUTHEAST FRIDAY AND SATURDAY...
...FLASH FLOODING AND SEVERE THUNDERSTORMS POSSIBLE OVER PARTS OF
THE MIDWEST, AND FROM THE SOUTHERN PLAINS TO THE OHIO VALLEY
THROUGH TONIGHT...
...BERYL IS FORECAST TO RE-INTENSIFY OVER THE SOUTHWESTERN GULF OF
MEXICO ON SATURDAY AND THREATEN SOUTHERN TEXAS...
ON THIS 4TH OF JULY, A SIGNIFICANT AND INCREASINGLY DANGEROUS
HEATWAVE IS SET TO INTENSIFY ALONG THE WEST COAST AS WE HEAD INTO
THE EXTENDED HOLIDAY WEEKEND. WIDESPREAD HIGH TEMPERATURES WELL
UP INTO THE 100S AND 110S THIS AFTERNOON ACROSS THE LOWER
ELEVATIONS IN CALIFORNIA WILL SOAR EVEN HIGHER BY FRIDAY
AFTERNOON. SATURDAY WILL LIKELY SHAPE UP TO BE THE HOTTEST DAY IN
THIS HEATWAVE WHEN HIGH TEMPERATURES INTO THE 110S WILL BE COMMON
ACROSS CALIFORNIA OUTSIDE OF THE COOLING EFFECTS OF THE PACIFIC
OCEAN NEAR THE COAST AND THE NATURALLY COOLER HIGHER ELEVATIONS.
NUMEROUS RECORD-BREAKING TEMPERATURES CAN BE EXPECTED THROUGH THE
NEXT FEW DAYS. LOCALLY HIGHER TEMPERATURES INTO THE 120S ARE
POSSIBLE IN THE TYPICAL HOT SPOTS OF THE DESERT SOUTHWEST. THE
TRIPLE-DIGIT HEAT WILL EXPAND NORTHWARD INTO THE PACIFIC NORTHWEST
AND PARTS OF THE CENTRAL GREAT BASIN, WITH WIDESPREAD HIGHS RISING
INTO THE 90S AND LOW 100S. THE DURATION OF THIS HEAT IS ALSO
CONCERNING AS SCORCHING ABOVE AVERAGE TEMPERATURES ARE FORECAST TO
LINGER INTO NEXT WEEK. HEAT IMPACTS CAN COMPOUND OVER TIME,
THEREFORE IT IS IMPORTANT TO REMAIN WEATHER AWARE AND FOLLOW THE
ADVICE OF LOCAL OFFICIALS. THIS LEVEL OF HEAT THROUGHOUT PARTS OF
THE MOJAVE DESERT AND SACRAMENTO/SAN JOAQUIN VALLEYS OF CALIFORNIA
COULD POSE A RISK TO ANYONE IF PROPER HEAT SAFETY IS NOT FOLLOWED.
IT IS IMPERATIVE TO STAY HYDRATED, OUT OF DIRECT SUNLIGHT, AND IN
BUILDINGS WITH SUFFICIENT AIR-CONDITIONING WHEN POSSIBLE. IT IS
ALSO EQUALLY AS IMPORTANT TO CHECK ON THE SAFETY OF VULNERABLE
FRIENDS, FAMILY, AND NEIGHBORS.
MEANWHILE, OPPRESSIVE HEAT AND HUMIDITY ACROSS THE SOUTHERN PLAINS
AND LOWER MISSISSIPPI VALLEY TODAY WILL BEGIN TO SHIFT EASTWARD TO
THE MID-ATLANTIC AND SOUTHEAST FOR THE END OF THE WEEK. HIGH
TEMPERATURES RISING INTO THE UPPER 90S AND LOW 100S ARE EXPECTED,
WITH HEAT INDICES SOARING INTO THE 110S ACROSS THE LOWER
MISSISSIPPI VALLEY. WARM OVERNIGHT CONDITIONS IN THE UPPER 70S AND
LOW 80S WILL OFFER LITTLE RELIEF, LEADING TO A DANGEROUS SITUATION
FOR THOSE WITHOUT ACCESS TO ADEQUATE COOLING. A COLD FRONT
ENTERING THE SOUTHERN PLAINS IS ANTICIPATED TO OFFER COOLER AND
BELOW AVERAGE TEMPERATURES TO OKLAHOMA, MUCH OF NORTHERN/WESTERN
TEXAS, AND THE MID-SOUTH BY FRIDAY. ABOVE AVERAGE TEMPERATURES ARE
THEN ANTICIPATED TO CONFINE TO THE SOUTHEAST AND MID-ATLANTIC FOR
THE START OF THE WEEKEND, WITH AFTERNOON HIGHS INTO THE
MID-TO-UPPER 90S. IF PLANNING TO SPEND AN EXTENDED AMOUNT OF TIME
OUTDOORS THIS FOURTH OF JULY, BE SURE TO USE CAUTION AND ACT
QUICKLY IF YOU SEE SIGNS OF HEAT-RELATED ILLNESSES.
AN ACTIVE AND STORMY WEATHER PATTERN OVER THE CENTRAL U.S. IS
EXPECTED TO BRING HEIGHTENED CHANCES FOR SEVERE THUNDERSTORMS AND
HEAVY RAINFALL, WHICH COULD IMPACT HOLIDAY GATHERINGS THROUGH
EARLY THIS WEEKEND. A DEVELOPING AREA OF LOW PRESSURE OVER THE
NORTHERN PLAINS IS FORECAST TO PROGRESS INTO THE UPPER MIDWEST BY
TONIGHT AND TEAM UP WITH A LINGERING FRONTAL BOUNDARY STRETCHING
FROM THE LOWER GREAT LAKES TO THE SOUTHERN PLAINS TO TRIGGER SOME
METEOROLOGICAL FIREWORKS. THUNDERSTORM CHANCES SPAN FROM THE
SOUTHERN PLAINS/ROCKIES TO THE MIDDLE/UPPER MISSISSIPPI VALLEY AND
ALSO EASTWARD TO THE OHIO VALLEY AND MID-ATLANTIC. HOWEVER, THE
GREATEST THREAT FOR STRONG TO SEVERE THUNDERSTORMS WILL BE
NEAR/ALONG THE FRONTAL BOUNDARY THROUGH PARTS OF THE MIDDLE/UPPER
MISSISSIPPI VALLEY AND SOUTHERN PLAINS. DAMAGING WIND GUSTS AND
FREQUENT LIGHTNING ARE THE MOST LIKELY WEATHER HAZARD ASSOCIATED
WITH THESE FOURTH OF JULY STORMS. FLASH FLOODING WILL REMAIN A
CONCERN THROUGHOUT THE UPPER MIDWEST AS WELL DUE TO YET ANOTHER
ROUND OF THUNDERSTORMS OVERLAPPING AREAS DEALING WITH ONGOING
RIVER FLOODING AND SATURATED SOILS, WITH SCATTERED FLASH FLOODING
ALSO POSSIBLE BETWEEN THE OHIO VALLEY AND SOUTHERN PLAINS. ON
FRIDAY, THUNDERSTORMS WILL CONTINUE TO PROGRESS EASTWARD WITH THE
FRONTAL BOUNDARY INTO MUCH OF THE EASTERN THIRD OF THE COUNTRY.
ISOLATED STRONG TO SEVERE STORMS AND FLASH FLOODING ARE POSSIBLE.
THE GREATEST THREAT FOR DAMAGING WIND GUSTS ASSOCIATED WITH THESE
STORMS WILL BE ACROSS THE UPPER OHIO VALLEY. ELSEWHERE, DAILY
THUNDERSTORM CHANCES ASSOCIATED WITH DAYTIME HEATING ARE POSSIBLE
ALONG THE GULF COAST AND FLORIDA. SCATTERED SHOWERS AND
THUNDERSTORMS ARE ALSO POSSIBLE THROUGHOUT THE NORTH-CENTRAL U.S.
THIS WEEKEND AS UPPER TROUGHING REMAINS OVER THE REGION. RESIDENTS
AND VISITORS LOCATED WITHIN AREAS EXPECTING SEVERE WEATHER AND/OR
HEAVY RAINFALL ARE ADVISED TO REMAIN WEATHER AWARE, HAVE MULTIPLE
WAYS TO RECEIVE WARNINGS, AND NEVER DRIVE ACROSS FLOODED ROADWAYS.
AS WE HEAD INTO THE WEEKEND, INTERESTS ALONG THE WESTERN GULF OF
MEXICO SHOULD PAY ATTENTION TO THE FUTURE PROGRESS OF HURRICANE
BERYL, CURRENTLY LOCATED IN THE WESTERN CARIBBEAN SEA. BERYL IS
FORECAST TO WEAKEN INTO A TROPICAL STORM AS IT TRAVERSES THE
YUCATAN PENINSULA ON FRIDAY BEFORE EMERGING INTO THE SOUTHWESTERN
GULF OF MEXICO ON SATURDAY. BERYL HAS AN OPPORTUNITY TO
RE-INTENSIFY OVER THE GULF AND TURN MORE NORTHWEST TOWARD THE
SOUTHERN TIP OF TEXAS BY THE END OF THIS FORECAST PERIOD SATURDAY
EVENING.
HAVE A SAFE INDEPENDENCE DAY!
KONG/SNELL
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page