197
FXUS01 KWBC 260815
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT SAT APR 26 2025
VALID 12Z SAT APR 26 2025 - 12Z MON APR 28 2025
...SCATTERED STRONG TO SEVERE THUNDERSTORMS PERSIST OVER THE
CENTRAL TO SOUTHERN HIGH PLAINS THROUGH THE NEXT COUPLE OF DAYS
WITH A SEVERE WEATHER AND FLASH FLOODING THREAT...
...SHOWERS AND THUNDERSTORMS WILL SPREAD ACROSS THE EAST COAST
TODAY WITH A PERIOD OF MODERATE TO HEAVY RAIN OVER MAINE...
...WET SNOW ALONG THE SIERRA NEVADA, PARTS OF THE GREAT BASIN THIS
WEEKEND, HIGHER ELEVATION OF THE INTERIOR NEW ENGLAND ON SUNDAY,
AND THEN THE NORTHERN ROCKIES SUNDAY NIGHT/EARLY MONDAY...
...MUCH BELOW AVERAGE TEMPERATURES SPREADING ACROSS CALIFORNIA
INTO THE WESTERN GREAT BASIN WITH MUCH ABOVE AVERAGE TEMPERATURES
SPREADING FROM THE ROCKIES THROUGH THE PLAINS...
AN ACTIVE SPRING WEATHER PATTERN WILL CONTINUE ACROSS LARGE
PORTIONS OF THE U.S. THROUGH THE WEEKEND. A LOW PRESSURE SYSTEM
MOVING THROUGH THE NORTHEAST WILL CONTINUE TO SPREAD A BROAD AREA
OF SHOWERS AND THUNDERSTORMS TODAY WITH FOCUS SHIFTING EAST TOWARD
MAINE WHERE A PERIOD OF MODERATE TO HEAVY RAIN CAN BE EXPECTED
DURING THE DAY. LIGHTER AND MORE SCATTERED SHOWERS AND EMBEDDED
THUNDERSTORMS WILL BE PASSING THROUGH THE REST OF THE EAST COAST
TODAY AHEAD OF A TRAILING COLD FRONT. BY TONIGHT, COLDER AIR
WRAPPING AROUND THE DEPARTING LOW PRESSURE SYSTEM COULD CHANGE THE
RAIN TO WET SNOW ACROSS THE HIGHER ELEVATION OF THE INTERIOR NEW
ENGLAND AND CONTINUE FOR MUCH OF SUNDAY WHEN THE SYSTEM SLOWS DOWN
ITS FORWARD MOTION.
OVER THE MID-SECTION OF THE COUNTRY, STRONG TO SEVERE
THUNDERSTORMS WILL BE MOST ACTIVE ACROSS THE SOUTHERN HIGH PLAINS
AS UPPER-LEVEL DISTURBANCES EJECT OUT OF THE ROCKIES INTERACT WITH
A STATIONARY FRONT. THE THUNDERSTORMS ARE FORECAST TO GRADUALLY
SHIFT FOCUS EASTWARD FROM THE TEXAS PANHANDLE INTO OKLAHOMA BY
THIS EVENING WITH A SLIGHT RISK OF FLASH FLOODING. BY SUNDAY, A
MORE ENERGETIC UPPER-LEVEL TROUGH MOVING THROUGH THE WESTERN U.S.
WILL BEGIN TO DEVELOP A LOW PRESSURE SYSTEM OVER THE CENTRAL HIGH
PLAINS. UNSETTLED WEATHER ASSOCIATED WITH THIS SYSTEM WILL
DEVELOP AND EXPAND ACROSS THE NORTHERN ROCKIES ON SUNDAY WHERE WET
SNOW IS FORECAST FOR MUCH OF THE HIGHER ELEVATIONS BY MONDAY
MORNING. THE CENTER OF THE LOW ITSELF WILL TRACK NORTHEAST INTO
THE NORTHERN PLAINS BY MONDAY MORNING WITH RAIN AND EMBEDDED
THUNDERSTORMS BLOSSOMING ACROSS THE REGION AND EXPANDING INTO THE
UPPER MIDWEST. A COLD NORTHERLY WIND WILL LIKELY BECOME STRONG
AND GUSTY FROM MONTANA TO NORTH DAKOTA BY MONDAY MORNING WHILE A
WARM AND GUSTY SOUTHERLY WIND STRENGTHENS THROUGH MUCH OF THE
SOUTHERN AND CENTRAL PLAINS TO THE SOUTH OF THE LOW PRESSURE
SYSTEM. THE THREAT OF SEVERE THUNDERSTORMS WILL BE MUCH INCREASED
SUNDAY NIGHT ACROSS THE NORTHERN-CENTRAL PLAINS AS THE
INTENSIFYING LOW PRESSURE SYSTEM TRACKS ACROSS THE REGION.
A DEEP UPPER-LEVEL LOW MOVING THROUGH THE WESTERN U.S. WILL BRING
AN EXPANDING AREA OF UNSETTLED WEATHER THROUGH THE REGION THIS
WEEKEND. SHOWER AND STORM CHANCES WITH PERIODS OF MODERATE
RAINFALL WILL SHIFT EASTWARD FROM CALIFORNIA AND OREGON INTO THE
GREAT BASIN TODAY, REACHING INTO THE NORTHERN ROCKIES ON SUNDAY.
LOCALLY HEAVIER RAINFALL MAY LEAD TO SOME ISOLATED FLOODING
CONCERNS ACROSS NORTHERN NEVADA ON SUNDAY. IN ADDITION TO THE
RAINFALL, THE DEEP UPPER-LEVEL LOW AND COOLER TEMPERATURES WILL
BRING SOME SNOWFALL FOR HIGHER ELEVATIONS OF THE MOUNTAINS,
PARTICULARLY FOR THE SIERRA NEVADA TODAY AND AREAL RANGES OF THE
GREAT BASIN/NORTHERN ROCKIES INTO SUNDAY. WINTER WEATHER
ADVISORIES ARE IN PLACE FOR THE SIERRA FOR SNOW TOTALS OF 3-6",
LOCALLY HIGHER. SOME SNOW MAY MIX IN FOR LOWER ELEVATIONS OF THE
GREAT BASIN BY LATER TODAY AND INTO SUNDAY MORNING, THOUGH ANY
ACCUMULATIONS LOOK TO REMAIN LIMITED. PRECIPITATION IS FORECAST
TO GRADUALLY TAPER OFF BY SUNDAY NIGHT INTO MONDAY MORNING WHEN
THE SYSTEM BEGINS TO MOVE FARTHER AWAY TO THE NORTHEAST.
THE ACTIVE PATTERN WILL LEAD TO SOME VARYING AND NOTABLY
ABOVE/BELOW AVERAGE TEMPERATURES THROUGH THE WEEKEND. ANOTHER DAY
OF ABOVE AVERAGE HIGHS ARE FORECAST FOR MOST OF THE
NORTHEAST/MID-ATLANTIC TODAY BEFORE A COLD FRONT BRINGS COOLER
TEMPERATURES ON SUNDAY, WITH ABOVE AVERAGE CONDITIONS EXPECTED
THROUGH THE WEEKEND ACROSS THE SOUTHEAST. A COOLER, BELOW AVERAGE
DAY ACROSS THE MIDWEST FOLLOWING THE COLD FRONT PASSAGE WILL BE
FOLLOWED BY A BIT OF A WARM UP TO AVERAGE CONDITIONS ON SUNDAY.
MUCH ABOVE AVERAGE HIGHS ARE FORECAST ACROSS THE ROCKIES AND WILL
EXPAND INTO THE PLAINS ON SUNDAY. THE DEEP UPPER-LEVEL LOW MOVING
OVER THE WEST WILL BRING MUCH BELOW AVERAGE TEMPERATURES TO
CALIFORNIA TODAY AND EXPAND MORE BROADLY INTO THE GREAT
BASIN/SOUTHWEST BY SUNDAY.
KONG/PUTNAM
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