717
FXUS01 KWBC 041925
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
324 PM EDT TUE AUG 04 2026
VALID 00Z WED AUG 05 2026 - 00Z FRI AUG 07 2026
..STRONG HEATWAVE CONTINUES FOR THE SOUTHWEST
...LOCALLY HEAVY RAIN POSSIBLE IN THE CORN BELT TONIGHT INTO
WEDNESDAY...
..POOR AIR QUALITY FOR THE PACIFIC NORTHWEST AND GREAT BASIN
A STRONG UPPER HIGH ("HEAT DOME") OVER THE SOUTHWEST WILL REMAIN
IN PLACE FOR AT LEAST THE NEXT COUPLE OF DAYS, FAVORING A
CONTINUATION OF HOT TEMPERATURES FOR MUCH OF NEVADA, ARIZONA,
INTERIOR CALIFORNIA, AND INTO OREGON ON WEDNESDAY. SOME DAILY
RECORD HIGH TEMPERATURES ARE POSSIBLE. THE ABOVE NORMAL
TEMPERATURES WILL SPREAD THROUGH THE ROCKIES TOMORROW AND INTO THE
HIGH PLAINS THURSDAY.
OVER THE UPPER MIDWEST/CORN BELT/MID-MISSISSIPPI VALLEY, A WAVY
FRONTAL BOUNDARY WILL ACT AS A FOCUS FOR SHOWERS AND STORMS THIS
EVENING INTO WEDNESDAY. SOME OF THE STORMS COULD PRODUCE LOCALLY
HEAVY RAIN THAT MAY LEAD TO INSTANCES OF FLASH FLOODING. A SLIGHT
RISK AREA IS NOTED FOR SOUTHEASTERN IOWA, NORTHERN/CENTRAL
ILLINOIS, AND NORTHERN MISSOURI TOMORROW. SCATTERED SHOWERS AND
STORMS WILL ALSO BE POSSIBLE ALONG THE FRONT NORTHEASTWARD THROUGH
THE GREAT LAKES. TEMPERATURES WILL BE NEAR TO BELOW NORMAL OVER
THE CENTRAL PLAINS TO PARTS OF THE MIDWEST DUE TO AN ABUNDANCE OF
CLOUD COVER.
OVER THE EAST, A BERMUDA HIGH IN THE WESTERN ATLANTIC WILL
MAINTAIN A SOUTHERLY/SOUTHWESTERLY FLOW INTO THE AREA, MAINTAINING
HIGHER LEVELS OF HUMIDITY FOR THE SOUTHEAST THAT WILL PUSH
NORTHWARD THROUGH THE MID-ATLANTIC TO THE NORTHEAST ON WEDNESDAY
AND THURSDAY. DEW POINTS INTO THE 60S AND 70S WILL ALSO COME WITH
THE CHANCE FOR SOME SCATTERED SHOWERS AND STORMS. TEMPERATURES
WILL BE ABOVE NORMAL WITH THE SOUTHERLY FLOW -- WELL INTO THE 80S
AND 90S.
FINALLY, IN THE NORTHWEST, ONGOING FIRES WILL LEAD TO PERSISTENT
SMOKE IN THE REGION, FROM WASHINGTON/OREGON EASTWARD AND ALSO OVER
THE GREAT BASIN WITH SEPARATE FIRES. AIR QUALITY ALERTS ARE IN
EFFECT FOR MUCH OF THE REGION. SOME MEMBERS OF THE PUBLIC MAY
EXPERIENCE HEALTH EFFECTS. MEMBERS OF SENSITIVE GROUPS MAY
EXPERIENCE MORE SERIOUS HEALTH EFFECTS. THIS INCLUDES CHILDREN,
THE ELDERLY, AND PERSONS WITH RESPIRATORY PROBLEMS. TEMPERATURES
WILL TREND WARMER OVER THE NEXT COUPLE OF DAYS, LEADING TO
MODERATE HEATRISK LEVELS (3 OUT OF 5).
FRACASSO
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