870
FXUS01 KWBC 250804
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT TUE APR 25 2023
VALID 12Z TUE APR 25 2023 - 12Z THU APR 27 2023
...HEAVY RAINS, ISOLATED FLASH FLOODING AND SEVERE WEATHER
POSSIBLE ACROSS PORTIONS OF THE CENTRAL TO SOUTHERN PLAINS...
...HEAVY WET SNOW EXPECTED TO DEVELOP OVER THE COLORADO ROCKIES
AND INTO PORTIONS OF THE FRONT RANGE LATER ON TUESDAY...
...BELOW AVERAGE TEMPERATURES FOR LARGE PORTIONS OF THE NATION TO
THE EAST OF THE ROCKIES, WHILE ABOVE AVERAGE TEMPERATURES EXPAND
ACROSS THE WEST...
...ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS TO PERSIST ACROSS
THE SOUTHERN ROCKIES TO SOUTHERN HIGH PLAINS...
A COOL SPRING WEATHER PATTERN IS ON TAP FOR THE NEXT FEW DAYS FOR
MOST AREAS TO THE EAST OF THE ROCKIES. A BROAD MID TO UPPER LEVEL
TROUGH WILL REMAIN ENTRENCHED ACROSS MUCH OF THE CENTRAL TO
EASTERN HALF OF THE NATION, SUPPORTING BELOW AVERAGE TEMPERATURE
OVER THE NEXT FEW DAYS FOR MOST AREAS TO THE EAST OF THE ROCKIES.
WIDESPREAD FREEZE AND FROST ADVISORIES ARE CURRENTLY IN EFFECT FOR
THE INTERIOR EASTERN TO NORTHEASTERN U.S. THIS MORNING. AS THE
BROAD UPPER LOW CONTINUES TO BRING ADDITIONAL ROUNDS OF SHOWERS
AND HIGH-ELEVATION WET SNOW ACROSS NEW ENGLAND, MOISTURE
ASSOCIATED WITH THE NEXT WEATHER MAKER HAS ALREADY MOVED INTO THE
INTERMOUNTAIN WEST AND PORTIONS OF THE ROCKIES. THIS RELATIVELY
QUICKLY-MOVING SYSTEM WILL SWEEP A COLD FRONT THROUGH THE CENTRAL
ROCKIES TODAY. MOUNTAIN SNOW AND VALLEY RAIN EARLY THIS MORNING
ACROSS THE NORTHERN ROCKIES ARE FORECAST TO REACH THE CENTRAL
ROCKIES LATER TODAY AS A SURFACE LOW PRESSURE SYSTEM FORMS AND
DEVELOPS OVER THE CENTRAL HIGH PLAINS. AS THIS LOW INTENSIFIES,
HEAVY WET SNOW IS FORECAST TO DEVELOP OVER THE COLORADO ROCKIES,
THE FOOTHILLS, AND POSSIBLY SPREADING INTO PORTIONS OF THE FRONT
RANGE FROM LATE TUESDAY INTO EARLY WEDNESDAY MORNING. THIS SYSTEM
WILL ALSO BE RESPONSIBLE FOR TRIGGERING AND EXPANDING ORGANIZED
CLUSTERS OF SHOWERS AND THUNDERSTORMS ACROSS THE CENTRAL TO
SOUTHERN PLAINS TODAY, WITH THE THREAT OF FLASH FLOODING
INCREASING AS THE DAY PROGRESSES ACROSS PORTIONS OF THE CENTRAL TO
SOUTHERN PLAINS FROM SOUTHEAST COLORADO, WESTERN AND SOUTHERN
KANSAS, ALL OF OKLAHOMA AND NORTHERN TEXAS. SOME OF THE
THUNDERSTORMS ARE EXPECTED TO BECOME SEVERE, ESPECIALLY FARTHER
SOUTH IN THE WARM SECTOR ACROSS EASTERN TEXAS. MEANWHILE, THE
SNOW ACROSS CENTRAL COLORADO SHOULD TAPER OFF DURING THE DAY ON
WEDNESDAY AS THE SYSTEM PUSHES FARTHER EAST AND BRINGS SHOWERS AND
STORMS INTO SOUTHERN TEXAS AS WELL AS THE LOWER TO MID-MISSISSIPPI
VALLEY BY THURSDAY MORNING.
THE COOL SPRING WEATHER PATTERN WILL ALSO SUPPORT POTENTIAL FOR
WIDESPREAD FROSTS AND FREEZES EARLY TUESDAY MORNING ACROSS THE
UPPER OHIO VALLEY, THE SOUTHERN TO CENTRAL APPALACHIANS AND
PORTIONS OF THE MID-ATLANTIC. FREEZE WARNINGS AND FROST ADVISORIES
ARE CURRENTLY IN EFFECT FOR THESE REGIONS. MORNING TEMPERATURES
WILL ALSO LIKELY FALL TO BELOW FREEZING LEVELS BOTH TUESDAY AND
WEDNESDAY MORNINGS FROM THE NORTHERN PLAINS, INTO THE UPPER
MISSISSIPPI VALLEY AND UPPER LAKES REGIONS. A ROUND OF COLD RAIN
WILL POSSIBLY PRECEDED BY SOME SNOW LATE WEDNESDAY INTO EARLY
THURSDAY ACROSS THE NORTHERN PLAINS AS THE NEXT FRONTAL SYSTEM
MOVES THROUGH.
FARTHER TO THE SOUTH AND WEST ACROSS THE SOUTHERN HIGH PLAINS, DRY
CONDITIONS ARE EXPECTED TO PERSIST OVER THE NEXT SEVERAL DAYS.
THESE DRY CONDITIONS, COMBINED WITH LOW RELATIVE HUMIDITIES AND
GUSTY WINDS WILL KEEP THE FIRE WEATHER THREAT AT AN ELEVATED TO
CRITICAL LEVEL OVER THE NEXT FEW DAYS ACROSS LARGE PORTIONS OF NEW
MEXICO, FAR SOUTHEASTERN ARIZONA AND SOUTHWEST TEXAS. FIRE
WEATHER WATCHES ARE CURRENTLY IN EFFECT ACROSS THESE REGIONS.
WHILE BELOW AVERAGE TEMPERATURES GRIP MUCH OF THE CENTRAL TO
EASTERN U.S. EARLY THIS WEEK, ABOVE AVERAGE TEMPERATURES WILL BE
EXPANDING ACROSS MUCH OF THE WESTERN U.S. THIS MUCH ABOVE AVERAGE
TEMPERATURE PATTERN WILL LIKELY CONTINUE THROUGH THE REMAINDER OF
THE WEEK WITH A GRADUAL INCREASE IN TEMPERATURES EACH DAY. THIS
MAY LEAD TO SOME RECORD HIGH TEMPERATURE POTENTIAL FOR PORTIONS OF
NORTHERN CALIFORNIA, WESTERN OREGON AND WESTERN WASHINGTON STATE
TOWARD THE END OF THE WORK WEEK.
KONG/ORAVEC
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page