916
FXUS01 KWBC 062014
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 PM EDT THU JUN 06 2024
VALID 00Z FRI JUN 07 2024 - 00Z SUN JUN 09 2024
...EXCESSIVE HEAT WARNINGS REMAIN IN EFFECT ACROSS THE
CALIFORNIA'S CENTRAL VALLEY AND MUCH OF THE DESERT SOUTHWEST...
...A COUPLE ROUNDS OF SEVERE THUNDERSTORMS AND HEAVY RAINFALL
POSSIBLE ACROSS PORTIONS OF THE CENTRAL PLAINS TOWARD THE
MID-MISSISSIPPI VALLEY FRIDAY AND SATURDAY...
A STRONG UPPER-LEVEL RIDGE ASSOCIATED WITH THE ONGOING HEAT WAVE
OVER THE SOUTHWEST IS FORECAST TO REACH ITS PEAK INTENSITY TODAY
(THURSDAY) BEFORE SLIDING OFF SLOWLY TOWARD THE SOUTHERN PLAINS
DURING THE NEXT COUPLE OF DAYS. WIDESPREAD HIGH AND LOW
TEMPERATURE RECORDS BEING TIED OR BROKEN BETWEEN CALIFORNIA NEVADA
AND ARIZONA TODAY WILL EXPAND A BIT NORTHWARD INTO OREGON AND
WASHINGTON ON FRIDAY AND SATURDAY. HIGHS IN THE 90S AND 100S
FOLLOWED BY LOWS RANGING FROM THE UPPER 50S TO MID 70S WILL LOWER
BY A COUPLE OF DEGREES EACH DAY. HEATRISK WILL PEAK BETWEEN MAJOR
AND EXTREME TODAY FOR MUCH OF THE WEST, WITH CALIFORNIA'S CENTRAL
VALLEY AND THE DESERT SOUTHWEST BEING OF PARTICULAR CONCERN DUE TO
THEIR LOWER ELEVATIONS AND SOME URBAN AREAS. LITTLE TO NO
OVERNIGHT RELIEF FROM THE HEAT WILL AFFECT THOSE WITHOUT EFFECTIVE
COOLING AND/OR ADEQUATE HYDRATION.
MID-LEVEL ENERGY PROPAGATING THROUGH THE FLORIDA PENINSULA WILL
SUPPORT SCATTERED THUNDERSTORMS THAT MAY BECOME SEVERE THIS
EVENING. MEANWHILE, A COUPLE DAYS OF MAJOR TO EXTREME HEAT RISK,
PARTICULARLY OVER URBAN AREAS ARE FORECAST FOR THE SOUTHERN HALF
OF THE PENINSULA. SEVERAL HIGH AND LOW TEMPERATURE RECORDS MAY BE
TIED OR BROKEN ON FRIDAY AND SATURDAY.
SHOWERS AND THUNDERSTORMS WILL DEVELOP ALONG A COLD FRONT MOVING
ACROSS THE EAST COAST TODAY. LOCALLY HEAVY RAINFALL MAY OCCUR OVER
PORTIONS OF THE INTERIOR NORTHEAST AND SOUTHERN NEW ENGLAND INTO
THE EVENING. THINGS MOSTLY CLEAR OUT ACROSS THE EAST COAST ON
FRIDAY, SAVE FOR PARTS OF NORTHERN/CENTRAL NEW ENGLAND WHERE SOME
LIGHT SHOWERS AND AN ISOLATED THUNDERSTORM WILL BE POSSIBLE. A
LINGERING UPPER-LEVEL LOW WILL KEEP TEMPERATURES COOLER THAN
NORMAL ACROSS THE NORTHERN TIER STATES ALONG WITH WINDY CONDITIONS
INTO THE WEEKEND. THE ASSOCIATED INSTABILITY WILL ALSO SUPPORT
OCCASIONAL SHOWERS ACROSS THE GREAT LAKES FOR THE NEXT COUPLE OF
DAYS.
WE SHIFT OUR ATTENTION TO THE CENTRAL U.S. ON FRIDAY AS A LOW
PRESSURE SYSTEM EMERGES FROM THE ROCKIES. SHOWERS AND
THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE CENTRAL PLAINS
AND MOVE GENERALLY EAST TOWARD THE MID-MISSISSIPPI VALLEY AS
ORGANIZED CLUSTERS OF THUNDERSTORMS THAT DAY. THE STORM PREDICTION
CENTER ISSUED A SLIGHT RISK (LEVEL 2/5) OF SEVERE THUNDERSTORMS
ACROSS SOUTH-CENTRAL NEBRASKA INTO NORTHERN KANSAS DUE TO THE
POTENTIAL OF DAMAGING WIND GUSTS AND SOME HAIL. EXCESSIVE RAINFALL
WILL BE MORE LIKELY FARTHER DOWNSTREAM FROM EASTERN KANSAS INTO
WESTERN MISSOURI. BY SATURDAY, THE THUNDERSTORMS AND HEAVY RAIN
ARE EXPECTED TO PUSH FARTHER SOUTHEAST TOWARD THE MID-MISSISSIPPI
VALLEY WHEN COLDER AIR FROM THE NORTHERN PLAINS BEGINS TO EDGE
SOUTHWARD. THE BEST CHANCE FOR THESE STORMS TO DEVELOP WILL BE
FROM FRIDAY AFTERNOON INTO THE EVENING FROM EASTERN OKLAHOMA TO
NORTHERN ARKANSAS AND SOUTHERN MISSOURI.
KONG/KEBEDE
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