805
FXUS01 KWBC 061941
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
241 PM EST MON JAN 06 2025
VALID 00Z TUE JAN 07 2025 - 00Z THU JAN 09 2025
...DEPARTURE OF EAST COAST WINTER STORM TO BE FOLLOWED BY
RELATIVELY QUIET WEATHER FOR MUCH OF NATION THROUGH WEDNESDAY...
...CRITICAL FIRE WEATHER CONCERNS FOR PORTIONS OF SOUTHERN
CALIFORNIA ON TUESDAY...
A WINTER STORM LOCATED OVER THE UPPER OHIO VALLEY AND MID-ATLANTIC
REGION AS OF MONDAY AFTERNOON WILL BE QUICKLY EXITING EASTWARD
INTO THE WESTERN ATLANTIC TONIGHT. WHILE THE BULK OF ACCUMULATING
SNOWFALL HAS ENDED, LIGHT ADDITIONAL ACCUMULATIONS WILL BE
POSSIBLE ACROSS PORTIONS OF THE CENTRAL APPALACHIANS TO THE
MID-ATLANTIC COAST EARLY TONIGHT.
HIGH PRESSURE AND COLDER TEMPERATURES WILL FILTER EASTWARD FROM
THE CENTRAL U.S. THROUGH WEDNESDAY SUPPORTING RELATIVELY TRANQUIL
WEATHER FOR MUCH OF THE CENTRAL AND EASTERN U.S. MEANWHILE,
NORTHWESTERLY FLOW ALOFT OVER THE NORTHEAST WILL MAINTAIN LIGHT TO
MODERATE LAKE EFFECT SNOW SHOWERS FOR LOCATIONS TO THE IMMEDIATE
SOUTH AND EAST OF THE LAKES OVER THE NEXT FEW DAYS. LIGHT TO
MODERATE SNOW SHOWERS WILL ALSO IMPACT NORTHERN NEW ENGLAND DUE TO
THE PASSAGE OF A NUMBER OF UPPER LEVEL DISTURBANCES SLOWLY MOVING
EAST. TEMPERATURES WILL BE BELOW AVERAGE FROM THE GREAT PLAINS TO
THE EAST COAST THROUGH WEDNESDAY, ROUGHLY 5 TO 20 DEGREES BELOW
CLIMATOLOGICAL DAYTIME MAXIMA FOR EARLY JANUARY.
ACROSS THE WESTERN U.S., UPPER LEVEL RIDGING OVER THE EASTERN
PACIFIC INTO WESTERN CANADA WILL ALLOW FOR THE AMPLIFICATION OF
TROUGHING INTO THE SOUTHWESTERN U.S. THROUGH WEDNESDAY. IN
ADDITION TO SCATTERED SNOW SHOWERS AND SLIGHTLY COLDER THAN
AVERAGE TEMPERATURES FOR INTERIOR PORTIONS OF THE WEST, STRONG
WINDS ARE EXPECTED TO DEVELOP FOR PARTS OF THE SOUTHWESTERN U.S.
AS HIGH PRESSURE BUILDS OVER THE NORTHERN GREAT BASIN AND LOW
PRESSURE HOLDS STEADY OVER SOUTHERN ARIZONA, A STRONG PRESSURE
GRADIENT WILL DEVELOP IN THE VICINITY OF HIGHER TERRAIN FROM THE
DESERT SOUTHWEST INTO THE SIERRA NEVADA AND SOUTHERN CALIFORNIA.
WIND GUSTS UP TO 60 MPH (LOCALLY HIGHER) WILL INCREASE THE
POTENTIAL FOR DOWNED TREES AND POWER OUTAGES. IN ADDITION, GUSTY
WINDS ON TUESDAY WILL SET UP SANTA ANA WINDS WHICH WILL PROMOTE
CRITICAL FIRE WEATHER CONDITIONS OVER THE SOUTHERN CALIFORNIA
COAST GIVEN LOW RELATIVE HUMIDITY IN PLACE, WITH FAVORABLE FIRE
WEATHER CONDITIONS CONTINUING THROUGH TUESDAY NIGHT.
OTHERWISE, THE EASTERN EDGE OF THE RIDGE ALONG THE WEST COAST WILL
MAINTAIN DRY AND SLIGHTLY WARMER THAN AVERAGE TEMPERATURES OVER
THE NEXT COUPLE OF DAYS FROM THE PACIFIC NORTHWEST TO COASTAL
CALIFORNIA WITH NO PRECIPITATION IN THE FORECAST UNTIL PERHAPS
THURSDAY FOR THE PACIFIC NORTHWEST.
OTTO
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