187
FXUS01 KWBC 250803
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT TUE MAR 25 2025
VALID 12Z TUE MAR 25 2025 - 12Z THU MAR 27 2025
...SIGNIFICANTLY ABOVE AVERAGE, WARM TO HOT EARLY SPRING
TEMPERATURES WILL EXPAND OVER THE WESTERN/CENTRAL U.S. THIS WEEK
WITH NUMEROUS MONTHLY RECORD HIGHS POSSIBLE...
...RAIN ACROSS NORTHWESTERN WASHINGTON STATE TODAY IS EXPECTED TO
TAPER OFF TODAY BUT THE NEXT WAVE OF MOISTURE IS FORECAST TO
ARRIVE LATER ON WEDNESDAY...
...WATCHING FOR AN INCREASING THREAT OF HEAVY RAIN MOVING INTO
SOUTHERN TEXAS BY THURSDAY MORNING...
WITH THE DEPARTURE OF A LOW PRESSURE SYSTEM OFF NEW ENGLAND, A
LARGE PORTION OF THE MAINLAND U.S. WILL BE UNDER RELATIVELY QUIET
WEATHER FOR THE NEXT COUPLE OF DAYS. WHILE A BROAD UPPER-LEVEL
TROUGH WILL KEEP THE NORTHEASTERN QUADRANT OF THE COUNTRY COLDER
THAN NORMAL BEHIND THE DEPARTING LOW, AN UPPER-LEVEL RIDGE IS
FORECAST TO BUILD OVER THE WESTERN U.S. AND EXPAND TOWARD THE
CENTRAL U.S. THIS WILL BRING AN EARLY SPRING HEAT WAVE ACROSS THE
DESERT SOUTHWEST WHILE ANOMALOUSLY WARM TEMPERATURES EXPAND
THROUGH THE WEST AND THEN INTO THE PLAINS. IN FACT, TEMPERATURES
WILL SOAR WELL UP INTO THE 90S TO NEAR 100 DEGREES THIS AFTERNOON
ACROSS THE DESERT SOUTHWEST WHICH WILL CHALLENGE OR POSSIBLY BREAK
MONTHLY RECORDS AT MANY LOCATIONS. MORE RECORD HIGH TEMPERATURES
ARE ALSO POSSIBLE THIS AFTERNOON FOR THE LOWER-ELEVATIONS UP AND
DOWN THE WEST COAST AS TEMPERATURES REACH INTO THE 70S AND 80S
JUST INLAND. THE ANOMALOUS WARMTH WILL ALSO EXPAND EASTWARD INTO
THE CENTRAL AND SOUTHERN PLAINS WHERE 90S WILL BE COMMON IN TEXAS
THIS AFTERNOON. WEDNESDAY SHOULD SEE THE CORE OF THE WARM AIR
SHIFTING FARTHER INLAND INTO THE GREAT BASIN, INTERMOUNTAIN WEST,
AND THE NORTHERN AND CENTRAL ROCKIES WHERE RECORD HIGH
TEMPERATURES INTO THE 70S TO NEAR 80 ARE MOST LIKELY.
IN CONTRAST TO THE ANOMALOUS WARMTH IN THE WEST, COLDER THAN
NORMAL CONDITIONS WITH MIXED RAIN AND SNOW WILL CONTINUE ACROSS
THE GREAT LAKES AND INTERIOR NORTHEAST THROUGH THE NEXT COUPLE OF
DAYS. MULTIPLE LOW PRESSURE WAVES TRAVERSING ALONG DIFFUSED
FRONTAL BOUNDARIES WILL BRING SOME LIGHT RAIN ACROSS THE
OHIO/TENNESSEE VALLEYS AND THE CENTRAL APPALACHIANS TODAY WHERE
WET SNOW IS POSSIBLE AT HIGHER ELEVATIONS. BY THIS EVENING, A LOW
PRESSURE CENTER WILL BEGIN TO CONSOLIDATE AS IT TRACKS QUICKLY
ACROSS THE MID-ATLANTIC ALONG WITH A PERIOD OF RAIN AND GUSTY
WINDS. THE LOW WILL MOVE RAPIDLY OUT TO SEA OVERNIGHT INTO
WEDNESDAY MORNING, WHICH WILL USHER COLDER AIR DOWN THE EAST COAST
UNDER GUSTY NORTHWESTERLY WINDS THROUGH THURSDAY MORNING.
MEANWHILE, SOME THUNDERSTORMS CAN BE EXPECTED TO DEVELOP ACROSS
OKLAHOMA INTO NORTHERN TEXAS TUESDAY NIGHT INTO WEDNESDAY MORNING
AHEAD OF A FRONTAL WAVE.
BY WEDNESDAY NIGHT INTO THURSDAY MORNING, MOISTURE WILL BEGIN TO
GATHER OVER SOUTHERN TEXAS WITH THE ARRIVAL OF A SUBTROPICAL JET
STREAM ACROSS MEXICO. SHOWERS AND THUNDERSTORMS ARE FORECAST TO
BECOME MORE NUMEROUS AND WIDESPREAD BY THURSDAY MORNING WHEN THE
THREAT OF HEAVY RAIN WILL BE INCREASING. MEANWHILE, A RATHER
LARGE AND INTENSE CYCLONE WILL COME INTO PICTURE OVER THE EASTERN
PACIFIC. RAIN WELL AHEAD OF THIS SYSTEM IS FORECAST TO REACH THE
WEST COAST BY WEDNESDAY EVENING ALONG COASTAL PACIFIC NORTHWEST
AND NORTHERN CALIFORNIA. BY THURSDAY MORNING, WINDS ARE EXPECTED
TO INCREASE AS THE RAIN CONTINUES IN THESE AREAS.
KONG
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