911
FXUS01 KWBC 021912
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
212 PM EST SUN FEB 02 2025
VALID 00Z MON FEB 03 2025 - 00Z WED FEB 05 2025
...HEAVY SNOW ACROSS PARTS OF NORTHERN CALIFORNIA/PACIFIC
NORTHWEST TO THE NORTHERN ROCKIES AND THE SIERRA NEVADA MOUNTAINS
ON MONDAY...
...THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL OVER PARTS OF
NORTHERN/CENTRAL CALIFORNIA...
...LIGHT TO MODERATE SNOW FROM THE NORTHERN PLAINS TO THE
NORTHEAST AND AREAS OF WINTERY MIX FROM WISCONSIN TO
PENNSYLVANIA...
UPPER-LEVEL ENERGY AND MOISTURE FROM THE PACIFIC WILL CONTINUE TO
STREAM INTO PARTS OF THE NORTHWEST AND CALIFORNIA. A PLUME OF
MOISTURE WILL STREAM INTO NORTHERN/CENTRAL CALIFORNIA, PRODUCING
HEAVY RAIN THROUGH TUESDAY EVENING. THEREFORE, THE WPC HAS ISSUED
A SLIGHT RISK (LEVEL 2/4) OF EXCESSIVE RAINFALL OVER PARTS OF
NORTHERN CALIFORNIA ON SUNDAY AND MONDAY AND OVER PARTS OF
NORTHERN/CENTRAL CALIFORNIA ON TUESDAY. THE ASSOCIATED HEAVY RAIN
WILL CREATE MAINLY LOCALIZED AREAS OF FLASH FLOODING, WITH URBAN
AREAS, ROADS, SMALL STREAMS, NARROW CANYONS/GULLIES, AND BURN
SCARS THE MOST VULNERABLE.
IN ADDITION, THE MOISTURE AND ENERGY WILL PRODUCE HEAVY SNOW OVER
PARTS OF NORTHERN CALIFORNIA/PACIFIC NORTHWEST INTO THE NORTHERN
ROCKIES FROM SUNDAY EVENING INTO MONDAY EVENING. ON MONDAY EVENING
INTO TUESDAY, THE SNOW WILL BE LIGHT TO MODERATE OVER NORTHERN
CALIFORNIA AND THE PACIFIC NORTHWEST, WITH MODERATE TO HEAVY SNOW
OVER PARTS OF THE NORTHERN INTERMOUNTAIN REGION AND NORTHERN
ROCKIES. MOREOVER, MODERATE TO HEAVY SNOW WILL DEVELOP OVER THE
SIERRA NEVADA MOUNTAINS FROM MONDAY EVENING INTO TUESDAY.
AS UPPER-LEVEL ENERGY SPREADS EASTWARD OVER THE PLAINS AND
MISSISSIPPI VALLEY OVERNIGHT SUNDAY INTO MONDAY, LIGHT TO MODERATE
SNOW WILL EXPAND OUT OF THE NORTHERN ROCKIES INTO THE NORTHERN
PLAINS AND INTO THE UPPER MISSISSIPPI VALLEY BY EARLY MONDAY
MORNING. THE SNOW WILL BEGIN TO WANE OVER THE UPPER MIDWEST ON
MONDAY AFTERNOON INTO MONDAY EVENING.
MEANWHILE, LOW PRESSURE AND ASSOCIATED FRONT OVER PARTS OF
ONTARIO, CANADA, WILL MOVE EASTWARD TO SOUTHEASTERN CANADA BY
TUESDAY. BY SUNDAY EVENING, THE SYSTEM WILL PRODUCE LIGHT SNOW
OVER PARTS OF THE GREAT LAKES AND NORTHEAST. RAIN WILL ALSO
DEVELOP OVER PARTS OF THE OHIO VALLEY. ALONG THE RAIN/SNOW LINE,
POCKETS OF RAIN/FREEZING RAIN WILL DEVELOP OVER PARTS OF THE UPPER
MIDWEST INTO THE OHIO VALLEY AND EXPAND INTO PARTS OF NEW YORK
STATE AND PENNSYLVANIA. MOREOVER, THE LIGHT SNOW AND RAIN WILL
CONTINUE OVER PARTS OF THE NORTHEAST THROUGH TUESDAY EVENING.
LASTLY, COLD HIGH PRESSURE OVER CENTRAL CANADA WILL STREAM COLD
AIR OVER PARTS OF THE NORTHERN ROCKIES/NORTHERN HIGH PLAINS, WITH
TEMPERATURES 15 TO 30 DEGREES BELOW AVERAGE BY MONDAY EVENING
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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