099
FXUS01 KWBC 221955
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
355 PM EDT MON JUL 22 2024
VALID 00Z TUE JUL 23 2024 - 00Z THU JUL 25 2024
...MUCH ABOVE AVERAGE TEMPERATURES TO CONTINUE ACROSS MUCH OF THE
WEST INTO THE NORTHERN ROCKIES AND NORTHERN PLAINS, WHILE COOLER
THAN AVERAGE TEMPERATURES EXPECTED FROM THE SOUTHERN PLAINS INTO
THE LOWER MISSISSIPPI VALLEY...
....WIDESPREAD SHOWERS AND THUNDERSTORMS POSSIBLE FROM SOUTH AND
EAST TEXAS, ACROSS THE SOUTH AND NORTHWARD ALONG THE EAST COAST...
A STRONG UPPER RIDGE WILL REMAIN CENTERED ACROSS THE SOUTHWEST AND
GREAT BASIN OVER THE NEXT FEW DAYS, CONTINUING TO SUPPORT MUCH
ABOVE AVERAGE TEMPERATURES ACROSS MUCH OF THE WEST INTO THE
NORTHERN ROCKIES AND NORTHERN PLAINS. HIGH TEMPERATURES ACROSS
THESE REGIONS ARE FORECAST TO BE 10 TO 15 DEGREES ABOVE AVERAGE
OVER THE NEXT TWO DAYS, WITH MANY REGIONS SEEING HIGHS OVER 100
DEGREES F. ONLY A FEW RECORD HIGHS EXPECTED ACROSS THE WEST ON
TUESDAY, BUT A GREATER CHANCE ON WEDNESDAY WITH RECORDS POSSIBLE
ACROSS MUCH OF MONTANA, SOUTHERN IDAHO AND EASTERN OREGON. ACROSS
LARGE PORTIONS OF THE WEST INTO THE NORTHERN PLAINS, THIS HEAT
WAVE WILL BE PRODUCING MAJOR TO EXTREME HEAT RISKS. HOWEVER, THE
FIRST SIGNS OF RELIEF FROM THIS HEAT WILL BE OCCURRING ACROSS THE
PACIFIC NORTHWEST INTO THE NORTHERN GREAT BASIN/NORTHERN ROCKIES
TUESDAY INTO WEDNESDAY WHEN A COLD FRONT WILL BE PUSHING INLAND
FORM THE EASTERN PACIFIC. THIS WILL BE THE START OF A LARGE SCALE
PATTERN CHANCE FOR THE WEST WHICH WILL BRING COOLER TEMPERATURES
TO THE WEST BY THE END OF TH WEEK INTO THE WEEKEND. BEFORE THIS,
HOWEVER, EXCESSIVE HEAT WARNINGS, AND HEAT ADVISORIES ARE
AFFECTING OVER 30 MILLION PEOPLE. IN ADDITION TO THE HOT
TEMPERATURES, THE DRY WEATHER WILL ALSO SUPPORT WILD FIRE
CONDITIONS ACROSS LARGE PORTIONS OF THE WEST.
IN CONTRAST TO THE HOT AND DRY WEATHER ACROSS MUCH OF THE WEST, AN
UNSETTLED WEATHER PATTERN WILL PERSIST ACROSS A LARGE PORTION OF
THE NATION FROM THE SOUTHERN PLAINS, ACROSS THE SOUTH, SOUTHEAST
AND NORTH ALONG THE EASTERN SEABOARD. ROUNDS OF SHOWERS AND
THUNDERSTORMS ARE LIKELY IN A REGION OF ABOVE AVERAGE MOISTURE
VALUES STRETCHING ACROSS THESE AREAS. MUCH OF THIS REGION HAS
SEEN BELOW AVERAGE PRECIPITATION THIS SUMMER, WITH MANY AREAS OF
THE SOUTH, SOUTHEAST, SOUTHERN TO CENTRAL APPALACHIANS INTO THE
MID-ATLANTIC EXPERIENCING MODERATE TO EXTREME DROUGHT CONDITIONS.
WHILE IT HAS BEEN DRY ACROSS THESE REGIONS, THE POTENTIAL FOR VERY
HEAVY RAINS IN A SHORT PERIOD WILL STILL POSE LOCALIZED FLASH
FLOOD RISKS IN THIS REGION OF ACTIVE SHOWER AND THUNDERSTORMS. IN
THE REGIONS OF ACTIVE SHOWERS AND THUNDERSTORMS, HIGH TEMPERATURES
WILL ALSO BE GENERALLY BELOW AVERAGE, WITH THE GREATEST CHANCE OF
BELOW AVERAGE TEMPERATURES ACROSS THE SOUTHERN PLAINS INTO THE
LOWER MISSISSIPPI VALLEY.
ORAVEC
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