906
FXUS01 KWBC 292005
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 PM EDT SAT JUL 29 2023
VALID 00Z SUN JUL 30 2023 - 00Z TUE AUG 01 2023
...A COLD FRONT WILL BRING AN END TO THE HEAT ACROSS THE OHIO
VALLEY, THE NORTHEAST AND THE MID-ATLANTIC BUT SEVERE
THUNDERSTORMS AND HEAVY RAIN CAN BE EXPECTED TO MOVE THROUGH THESE
AREAS INTO TONIGHT...
...TRIPLE-DIGIT HEAT CONTINUES ACROSS THE SOUTHERN HALF OF THE
PLAINS TO THE EASTERN GULF COAST WHILE COOL AND UNSETTLED WEATHER
CONTINUES ACROSS THE NORTHERN PLAINS TOWARD THE MIDWEST...
...MONSOONAL RAINFALL WILL BECOME MORE WIDESPREAD ACROSS THE
DESERT SOUTHWEST AND INTO THE FOUR CORNERS REGION WHILE DRY
CONDITIONS PERSIST OVER THE PACIFIC NORTHWEST...
DURING THE NEXT COUPLE OF DAYS, A BROAD TROUGH OF LOW PRESSURE
ALOFT OVER EASTERN CANADA IS FORECAST TO DIP WELL INTO THE EASTERN
HALF OF THE COUNTRY. THIS TROUGH WILL BRING WITH IT A LARGE DOME
OF COOL AIR FROM CANADA BEHIND A WELL-DEFINED COLD FRONT. THE
ARRIVAL OF THE COOL AIR WILL BRING WELCOME RELIEF FROM THE HEAT
ACROSS THE OHIO VALLEY TO MUCH OF THE NORTHEAST AND INTO THE
MID-ATLANTIC BY SUNDAY. HOWEVER, PRIOR TO THE ARRIVAL OF THE COOL
AIR, THE COLD FRONT WILL TRIGGER A STRONG TO SEVERE THUNDERSTORMS
ALONG WITH LOCALLY HEAVY DOWNPOURS WHICH MAY BE ACCOMPANIED WITH
GUSTY WINDS AND/OR SQUALLS AS THEY MOVE THROUGH THE AFOREMENTIONED
AREAS FROM WEST TO EAST THROUGH TONIGHT. MUCH COOLER AIR TOGETHER
WITH FAIR WEATHER CAN BE EXPECTED TO ARRIVE BEHIND THE FRONT ON
SUNDAY FOR THESE AREAS AND AGAIN ON MONDAY BUT WITH THE COOLER AIR
DIPPING EVEN FARTHER SOUTH INTO THE CAROLINAS. ON THE OTHER HAND,
THE COOL AIR WILL NOT PUSH AS FAR SOUTH ACROSS THE MID-SECTION OF
THE COUNTRY, WITH TRIPLE-DIGIT HEAT CONTINUES ACROSS THE SOUTHERN
HALF OF THE GREAT PLAINS TO THE EASTERN GULF COAST. TO THE NORTH
OF THE FRONT, RELATIVELY COOL AND UNSETTLED WEATHER IS EXPECTED TO
CONTINUE ACROSS THE NORTHERN PLAINS TOWARD THE MIDWEST, WHERE
ROUNDS OF THUNDERSTORMS CAN BE EXPECTED ESPECIALLY OVER THE
NORTHERN HIGH PLAINS FOR THE NEXT COUPLE OF DAYS. FLORIDA WILL
REMAIN HOT WITH TYPICAL SUMMER-TIME SHOWERS AND THUNDERSTORMS.
OVER THE SOUTHWESTERN PORTION OF THE COUNTRY, INCREASING SOUTHERLY
FLOW ALOFT IS FORECAST TO SPREAD MONSOONAL MOISTURE FARTHER NORTH
FROM THE SUBTROPICS AND MEXICO. SHOWERS AND THUNDERSTORMS CAN BE
EXPECTED TO BECOME MORE WIDESPREAD ACROSS THE DESERT SOUTHWEST AND
INTO THE FOUR CORNERS REGION THROUGH THE NEXT COUPLE OF DAYS, AND
THE RAIN WILL HAVE A TENDENCY TO SPREAD FARTHER NORTH INTO THE
CENTRAL ROCKIES BY MONDAY. MEANWHILE, DRY CONDITIONS ARE FORECAST
TO PERSIST OVER THE PACIFIC NORTHWEST UNDER THE PROTECTION OF AN
UPPER-LEVEL RIDGE PRIOR TO THE ARRIVAL OF THE NEXT UPPER TROUGH
FROM THE EASTERN NORTH PACIFIC. TEMPERATURES WILL BE WARMER THAN
NORMAL OVER THE INTERMOUNTAIN REGION BUT NEAR OR BELOW NORMAL
CLOSER TO THE WEST COAST.
KONG
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page