568
FXUS01 KWBC 060718
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
317 AM EDT THU JUN 06 2024
VALID 12Z THU JUN 06 2024 - 12Z SAT JUN 08 2024
...EXCESSIVE HEAT WARNINGS IN EFFECT ACROSS THE CALIFORNIA'S
CENTRAL VALLEY AND MUCH OF THE DESERT SOUTHWEST...
...SEVERE THUNDERSTORMS AND EXCESSIVE RAINFALL POSSIBLE OVER
PORTIONS OF THE CENTRAL PLAINS AND MIDDLE MISSISSIPPI VALLEY ON
FRIDAY...
AN ENTRENCHED UPPER-LEVEL RIDGE WITH EMBEDDED SHORTWAVE ENERGY
WILL CONTINUE TO PROMOTE A HEAT WAVE THROUGHOUT MUCH OF THE WEST
THROUGH THE END OF THE WEEK. WIDESPREAD HIGH AND LOW TEMPERATURE
RECORDS ARE LIKELY TO BE TIED OR BROKEN BETWEEN CALIFORNIA NEVADA
AND ARIZONA TODAY BEFORE THE HEAT WAVE EXPANDS NORTH 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
REPRESENT 20-30 DEGREE ANOMALIES. 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 WARM SOUTHERLY FLOW AND A COUPLE DAYS OF MAJOR TO EXTREME
HEAT RISK, PARTICULARLY OVER URBAN PARTS OF THE STATE. 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 THIS
AFTERNOON AND 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.
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 INTO THE MIDDLE MISSISSIPPI VALLEY AS MCSS THAT DAY. THE
STORM PREDICTION CENTER ISSUED A SLIGHT RISK (LEVEL 2/5) OF SEVERE
THUNDERSTORMS ACROSS SOUTHWEST/SOUTH-CENTRAL NEBRASKA AND
NORTHWEST/NORTH-CENTRAL KANSAS DUE TO THE POTENTIAL FOR HAIL AND
DAMAGING WIND GUSTS ASSOCIATED WITH THOSE MCSS. EXCESSIVE RAINFALL
WILL BE MORE OF A CONCERN ONCE THOSE STORMS MOVE INTO A MORE
UNSTABLE AND MOIST ENVIRONMENT IN THE LOWER MISSOURI VALLEY FRIDAY
EVENING. THUS, A SLIGHT RISK (AT LEAST 15%) OF EXCESSIVE RAINFALL
LEADING TO FLASH FLOODING IS IN EFFECT FOR MUCH OF EASTERN KANSAS
AND PARTS OF WESTERN MISSOURI.
KEBEDE
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