581
FXUS01 KWBC 070731
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
331 AM EDT SAT SEP 07 2024
VALID 12Z SAT SEP 07 2024 - 12Z MON SEP 09 2024
...DANGEROUS HEAT CONTINUES TO IMPACT PORTIONS OF THE WEST THIS
WEEKEND...
...HEAVY RAIN AND SCATTERED INSTANCES OF FLASH FLOODING ARE
POSSIBLE ALONG THE GULF COAST AND PARTS OF THE SOUTHEAST...
...BELOW AVERAGE TEMPERATURES TO SETTLE IN ACROSS MUCH OF THE
MIDWEST AND EAST THROUGH THE BEGINNING OF NEXT WEEK...
A FEW MORE DAYS OF RECORD-BREAKING AND DANGEROUS HEAT ARE IN STORE
FOR PARTS OF THE WEST AS WELL ABOVE AVERAGE TEMPERATURES LINGER
UNDERNEATH A WEAKENING UPPER-LEVEL HIGH PRESSURE SYSTEM. AREAS
MOST LIKELY TO EXPERIENCE MAJOR TO EXTREME HEATRISK (LEVELS OF
HEAT THAT AFFECT ANYONE WITHOUT EFFECTIVE COOLING OR ADEQUATE
HYDRATION) THROUGH SUNDAY INCLUDE SOUTHERN CALIFORNIA, THE DESERT
SOUTHWEST, AND THE NORTHERN GREAT BASIN. THESE REGIONS ARE ALSO
WHERE EXCESSIVE HEAT WARNINGS AND HEAT ADVISORIES REMAIN IN
EFFECT. HIGH TEMPERATURES IN THE SOUTHWEST ARE EXPECTED TO SOAR
INTO THE UPPER 90S AND TRIPLE DIGITS, WITH 110S IN THE TYPICALLY
HOTTEST DESERT LOCATIONS THROUGH AT LEAST MONDAY. HIGHS INTO THE
UPPER 90S ARE FORECAST TO SIMMER THE NORTHERN GREAT BASIN BEFORE A
GRADUAL COOLING TREND COMMENCES BY EARLY NEXT WEEK, WITH THE
ANOMALOUSLY WARM TEMPERATURES FORECAST TO SHIFT EASTWARD INTO THE
NORTHERN PLAINS. RESIDENTS AND VISITORS ARE ADVISED TO CONTINUE
FOLLOWING PROPER HEAT SAFETY. THIS INCLUDES STAYING HYDRATED AND
AVOIDING EXTENDED PERIODS OF TIME OUTDOORS DURING THE HOTTEST
PARTS OF THE DAY. POOR AIR QUALITY WILL ALSO REMAIN A CONCERN FOR
PARTS OF THE GREAT BASIN AS WILDFIRE SMOKE CONTINUES TO OVERSPREAD
THE REGION.
A STATIONARY FRONT EXTENDING FROM OFF THE SOUTHEAST COASTLINE TO
THE NORTHERN GULF OF MEXICO WILL CONTINUE TO PROVIDE A FOCUS FOR
NUMEROUS SHOWERS AND THUNDERSTORMS OVER THE NEXT FEW DAYS AS ITS
MOISTURE GRADIENT GETS REINFORCED BY A SEPARATE APPROACHING COLD
FRONT SINKING SOUTHWARD ACROSS THE DEEP SOUTH TODAY. AREAS OF
LOCALLY HEAVY RAIN AND SCATTERED FLASH FLOODS ARE POSSIBLE FROM
THE COASTAL CAROLINAS TO THE CENTRAL GULF COAST, INCLUDING
NORTHERN AND CENTRAL FLORIDA. GREATER CONCENTRATION OF TROPICAL
DOWNPOURS ARE ANTICIPATED TO REORIENT TO SOUTHERN TEXAS BY MONDAY
AS AN AREA OF LOW PRESSURE DEVELOPS IN THE BAY OF CAMPECHE AND
USHERS ELEVATED ATMOSPHERIC MOISTURE WESTWARD TO THE WESTERN GULF
COAST.
ELSEWHERE, A COLD FRONT SWEEPING ACROSS THE EAST COAST TODAY WILL
PRODUCE SCATTERED SHOWERS AND THUNDERSTORMS THROUGHOUT THE
NORTHEAST. BEHIND THIS FRONTAL BOUNDARY AND UNDERNEATH POTENT HIGH
PRESSURE, BELOW AVERAGE AND CRISP TEMPERATURES ARE EXPECTED TO
OVERSPREAD MUCH OF THE GREAT LAKES, MIDWEST, AND EAST THIS
WEEKEND. WIDESPREAD LOWS INTO THE 40S WILL LEAD TO A FEW CHILLY
MORNINGS, WITH SEVERAL DAILY RECORD LOWS POSSIBLE BETWEEN MISSOURI
AND NEW JERSEY ON SUNDAY. PATCHY FROST CANNOT BE RULED OUT FOR
SOME LOCATIONS. CONVERSELY, SOUTHERN FLORIDA WILL REMAIN HOT AND
HUMID THIS WEEKEND AS HIGH TEMPERATURES RISE INTO THE LOW-TO-MID
90S, WHILE HEAT INDICES APPROACH 110 DEGREES.
SNELL
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page