547
FXUS01 KWBC 270808
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
401 AM EDT THU APR 27 2023
VALID 12Z THU APR 27 2023 - 12Z SAT APR 29 2023
...MORE ROUNDS OF HEAVY RAIN AND SEVERE WEATHER EXPECTED TO IMPACT
THE SOUTHERN TIER STATES TODAY AND INTO EARLY FRIDAY, FOLLOWED BY
PORTIONS OF TEXAS BY EARLY SATURDAY...
...SEVERE WEATHER WITH POTENTIALLY LARGE HAIL COULD OCCUR AGAIN
TODAY NEAR THE EAST COAST OF FLORIDA AS WELL AS SOUTHERN TEXAS...
...ANOTHER QUICK ROUND OF WET SNOW IS EXPECTED TO DIVE INTO THE
NORTHERN ROCKIES TODAY FOLLOWED BY THE CENTRAL ROCKIES
TONIGHT/EARLY FRIDAY...
...A WARMING TREND ACROSS THE WEST COULD BREAK TEMPERATURE RECORDS
BY FRIDAY WHILE BELOW AVERAGE TEMPERATURES ARE FORECAST FOR LARGE
PORTIONS OF THE U.S. FROM THE ROCKIES EASTWARD...
AN ACTIVE AND COMPLICATED WEATHER PATTERN IS FORECAST TO BRING
INCLEMENT WEATHER TO VARIOUS LOCATIONS ACROSS THE EASTERN
TWO-THIRDS OF THE COUNTRY THROUGH THE NEXT COUPLE OF DAYS. A LOW
PRESSURE SYSTEM DEVELOPING AND TRACKING THROUGH THE SOUTHERN TIER
STATES WILL BRING A QUICK ROUND OF HEAVY RAIN AND STRONG TO SEVERE
THUNDERSTORMS FROM WEST TO EAST THROUGH THE REGION TODAY INTO
TONIGHT. OVER FLORIDA, DAYTIME HEATING OVER SEA BREEZE BOUNDARIES
COMBINED WITH PASSAGE OF UPPER-LEVEL ENERGY COULD BRING MORE
INSTANCES OF SEVERE THUNDERSTORMS WITH LARGE HAIL NEAR THE EAST
COAST OF THE FLORIDA PENINSULA TODAY. THE LOW PRESSURE SYSTEM
WILL MOVE INTO THE EASTERN U.S. ON FRIDAY WITH A ROUND OF
MODERATELY HEAVY RAIN LIKELY MOVING UP THE EASTERN SLOPE OF THE
APPALACHIANS AND THE MID-ATLANTIC STATES. LIGHTER RAINFALL IS
EXPECTED TO MOVE ACROSS THE OHIO VALLEY AS WELL. BY SATURDAY
MORNING, THE SOUTHERN HALF OF THE EASTERN U.S. SHOULD BEGIN TO DRY
OUT BEHIND THE SYSTEM WHILE THE NORTHERN MID-ATLANTIC WILL START
THE WEEKEND IN A MILD AND RAINY NOTE.
MEANWHILE, A LOW PRESSURE SYSTEM DIVING INTO THE NORTHERN HIGH
PLAINS WILL PRODUCE A VARIETY OF WEATHER AS IT PRESSES SOUTH AND
EAST INTO THE MID-SECTION OF THE COUNTRY. HIGHER ELEVATION WET
SNOW OF 6-12 INCHES WILL ONCE AGAIN BE POSSIBLE AS COOL AIR IS
USHERED IN AND LIFTED BEHIND A COLD FRONT ACROSS THE NORTHERN
ROCKIES TODAY, REACHING INTO THE CENTRAL ROCKIES WITH 6+ INCHES OF
WET SNOW ON FRIDAY. BY FRIDAY NIGHT INTO EARLY SATURDAY, THE
SYSTEM WILL MOVE OUT INTO THE SOUTHERN PLAINS WHERE STRONG TO
SEVERE THUNDERSTORMS ARE FORECAST TO DEVELOP.
A STRENGTHENING UPPER-LEVEL RIDGE ACROSS THE WEST THROUGH LATE
WEEK WILL LEAD TO GRADUAL WARMING OF TEMPERATURES ACROSS THE
REGION. ABOVE AVERAGE TEMPERATURES SHOULD BE MOST NOTABLE ACROSS
THE WEST COAST STATES, WHERE A FEW RECORD HIGH MAXIMUM/MINIMUM
TEMPERATURES COULD BE TIED OR SET THURSDAY WITH INCREASING NUMBERS
OF POTENTIAL RECORDS BY FRIDAY. TEMPERATURES IN THE DESERT
SOUTHWEST COULD EXCEED 100F, SLIGHTLY WARMER THAN USUAL FOR THIS
TIME OF YEAR. BUT FROM THE ROCKIES EASTWARD, TEMPERATURES WILL
GENERALLY BE BELOW NORMAL FOR MANY AREAS THROUGH LATE WEEK. FREEZE
WARNINGS AND FROST ADVISORIES ARE IN PLACE ACROSS PARTS OF THE
OHIO VALLEY/GREAT LAKES REGION FOR ANOTHER CHILLY MORNING TODAY.
KONG/TATE
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