987
FXUS01 KWBC 280740
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
240 AM EST WED FEB 28 2024
VALID 12Z WED FEB 28 2024 - 12Z FRI MAR 01 2024
...HEAVY SNOW OVER PARTS OF THE CASCADES, THE NORTHERN
INTERMOUNTAIN
REGION, NORTHERN CALIFORNIA, AND SIERRA NEVADA MOUNTAINS...
...LIGHT TO MODERATE SNOW OVER THE GREAT LAKES, CENTRAL
APPALACHIANS, AND NORTHEAST...
...TEMPERATURES WILL BE 10 TO 25 DEGREES ABOVE AVERAGE OVER PARTS
OF THE NORTHEAST AND MID-ATLANTIC...
A SECOND WINTER STORM WILL IMPACT THE WEST COAST ON WEDNESDAY AND
THURSDAY. THE SECOND SIGNIFICANT WINTER STORM WILL PRIMARILY
AFFECT THE NORTHWEST WEDNESDAY AND THURSDAY BEFORE SIGNIFICANTLY
IMPACTING THE NORTHERN AND CENTRAL CALIFORNIA MOUNTAINS FRIDAY.
THE STORM WILL CREATE HEAVY MOUNTAIN SNOW THAT WILL AFFECT MANY
PASSES. MULTIPLE FEET OF SNOW ARE LIKELY (OVER 80% CHANCE) FOR
HIGHER ELEVATIONS, SIGNIFICANTLY ABOVE 5000 FEET, INCLUDING MANY
CASCADE AND SIERRA NEVADA MOUNTAINS PASSES. EXTREMELY HEAVY SNOW
RATES SURPASSING 3 INCHES PER HOUR ARE POSSIBLE IN THESE MOUNTAIN
RANGES.
FURTHERMORE, THE STORM WILL PRODUCE BLIZZARD CONDITIONS IN THE
SIERRA NEVADA MOUNTAINS. IN DETAIL, STRONG WINDS WILL CAUSE
SIGNIFICANT BLOWING AND DRIFTING SNOW, WITH WHITEOUT CONDITIONS,
MAKING TRAVEL IMPOSSIBLE IN THE SIERRA NEVADA MOUNTAINS. THERE IS
A HIGH CHANCE (OVER 70%) OF SUBSTANTIAL, LONG-LASTING DISRUPTIONS
TO DAILY LIFE IN THE HIGHER ELEVATIONS OF THE SIERRA NEVADA
MOUNTAINS FRIDAY, WHERE BLIZZARD CONDITIONS AND OVER 5 FEET OF
SNOW ARE EXPECTED.
MOREOVER, IN ADDITION TO THE SNOW, COASTAL RAIN WILL DEVELOP OVER
PARTS OF THE PACIFIC NORTHWEST WEDNESDAY INTO FRIDAY. COASTAL RAIN
WILL DEVELOP OVER PARTS OF NORTHERN CALIFORNIA OVERNIGHT
WEDNESDAY, CONTINUING INTO FRIDAY. THE RAIN MOVES INTO CENTRAL
CALIFORNIA ON THURSDAY, CONTINUING INTO FRIDAY, AND PARTS OF
SOUTHERN CALIFORNIA BY FRIDAY MORNING.
MEANWHILE, ON WEDNESDAY, A DEEP LOW OVER THE UPPER GREAT LAKES
WILL MOVE NORTHEASTWARD INTO EASTERN CANADA BY WEDNESDAY EVENING.
THE ASSOCIATED FRONT WILL MOVE OFF THE EAST AND GULF COAST BY
THURSDAY MORNING. AHEAD OF THE FRONT, SOUTHERLY WIND WILL BRING
WARM TEMPERATURES OF 10 TO 25 DEGREES ABOVE AVERAGE OVER PARTS OF
THE NORTHEAST AND MID-ATLANTIC.
ON WEDNESDAY, THE BOUNDARY WILL CREATE SHOWERS AND THUNDERSTORMS
FROM THE CENTRAL GULF COAST TO THE NORTHEAST. IN THE WAKE OF THE
FRONT, MODERATE TO HEAVY SNOW WILL DEVELOP OVER THE GREAT LAKES
INTO THE NORTHEAST, WITH LIGHT TO MODERATE SNOW OVER THE CENTRAL
APPALACHIANS ON WEDNESDAY. IN ADDITION, ON THURSDAY, LAKE-EFFECT
SNOW WILL DEVELOP DOWNWIND FROM THE GREAT LAKES, ENDING BY
THURSDAY NIGHT.
ELSEWHERE, UPPER-LEVEL ENERGY MOVING INTO THE SOUTHWEST AND
SOUTHERN ROCKIES WILL PRODUCE SCATTERED SHOWERS, THUNDERSTORMS,
AND HIGHER-ELEVATION SNOW FROM WEDNESDAY AFTERNOON INTO THURSDAY.
OVERNIGHT THURSDAY, SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER
PARTS OF THE SOUTHERN PLAINS, MOVING INTO THE LOWER MISSISSIPPI,
TENNESSEE, AND SOUTHERN OHIO VALLEYS AND PARTS OF THE SOUTHEAST.
ZIEGENFELDER
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