103
FXUS01 KWBC 020759
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
257 AM EST TUE JAN 02 2024
VALID 12Z TUE JAN 02 2024 - 12Z THU JAN 04 2024
...PACIFIC SYSTEM TO BRING COASTAL/LOWER ELEVATION RAIN AND
MOUNTAIN SNOWS TO CALIFORNIA AND THE PACIFIC NORTHWEST TUESDAY,
SPREADING INTO THE GREAT BASIN AND SOUTHWEST WEDNESDAY...
...MODERATE TO LOCALLY HEAVY RAINFALL EXPECTED WITH SHOWERS AND
THUNDERSTORMS FOR PORTIONS OF TEXAS AND THE GULF COAST...
...LAKE-EFFECT SNOWS DOWNWIND FROM THE GREAT LAKES OVER THE NEXT
COUPLE OF DAYS...
AFTER A MOSTLY QUIET START TO THE NEW YEAR, THE WEATHER PATTERN
WILL GET MORE ACTIVE ACROSS MULTIPLE AREAS OF THE COUNTRY AS WE
START THE SHORTENED WORK WEEK. A PACIFIC STORM SYSTEM APPROACHING
THE WEST COAST TUESDAY MORNING WILL BRING MODERATE TO LOCALLY
HEAVY RAIN TO COASTAL AND LOWER ELEVATIONS OF THE PACIFIC
NORTHWEST AND CALIFORNIA, AS WELL AS SOME POTENTIALLY HEAVY SNOW
FOR HIGHER MOUNTAIN ELEVATIONS. THE HEAVIEST RAINFALL IS MOST
LIKELY ALONG THE NORTHERN CALIFORNIA COAST WHERE TOTALS ABOVE AN
INCH WILL BE POSSIBLE. IN THE MOUNTAINS, HIGHER ELEVATIONS OF THE
NORTHERN COASTAL RANGES, KLAMATH MOUNTAINS, AND THE SIERRA WILL
SEE MODERATE TO LOCALLY HEAVY SNOW WITH TOTALS OF 6-12", LOCALLY
HIGHER. PRECIPITATION CHANCES WILL SHIFT SOUTH AND EASTWARD
WEDNESDAY INTO SOUTHERN CALIFORNIA, THE GREAT BASIN, AND THE
SOUTHWEST. RAIN IS FORECAST FOR COASTAL SOUTHERN CALIFORNIA AND
THE DESERT SOUTHWEST WITH A WINTRY MIX FOR LOWER ELEVATION VALLEYS
IN THE GREAT BASIN, THOUGH LITTLE TO NO SNOW ACCUMULATIONS ARE
ANTICIPATED. HIGHER ELEVATIONS IN THE MOUNTAINS WILL LIKELY SEE AT
LEAST A FEW INCHES OF SNOW, INCLUDING FOR THOSE IN SOUTHERN
CALIFORNIA AND THE GREATER LOS ANGELES AREA AND INTO THE
SOUTHWEST.
TO THE EAST, AN UPPER-LEVEL SHORTWAVE WILL HELP TO INDUCE A
SURFACE LOW PRESSURE SYSTEM ALONG A FRONTAL BOUNDARY IN THE GULF,
DRAWING GULF MOISTURE NORTHWARD INTO TEXAS AND ALONG THE GULF
COAST AND LEADING TO SCATTERED TO WIDESPREAD SHOWERS AND
THUNDERSTORMS. SOME MODERATE TO LOCALLY HEAVY RAINFALL WILL BE
POSSIBLE FOR PORTIONS OF CENTRAL AND EASTERN TEXAS BEGINNING
TUESDAY AFTERNOON, SPREADING EASTWARD THROUGH THE LOWER
MISSISSIPPI VALLEY TUESDAY NIGHT AND INTO THE SOUTHEAST WEDNESDAY.
THE HIGHEST CHANCES FOR HEAVIER RAINFALL WILL BE FOCUSED ALONG THE
GULF COAST.
A FRONTAL WAVE DROPPING SOUTHWARD FROM CANADA AND PREDOMINANTLY
NORTHWESTERLY WIND FLOW WILL LEAD TO SOME LAKE-ENHANCED AND
LAKE-EFFECT SNOW SHOWERS DOWNWIND FROM THE GREAT LAKES OVER THE
NEXT COUPLE OF DAYS. ACCUMULATIONS OF A FEW INCHES ARE EXPECTED
FOR FAVORABLE REGIONS SOUTH/EAST OF LAKES SUPERIOR AND MICHIGAN
TUESDAY, SHIFTING TO AREAS EAST OF LAKES ERIE AND ONTARIO
WEDNESDAY. SOME LOCALLY HEAVIER TOTALS ABOVE 6" COULD BE SEEN EAST
OF LAKES ERIE AND ONTARIO DEPENDING UPON THE INTENSITY AND
LONGEVITY OF THE SNOWBANDS.
ELSEWHERE, CONDITIONS WILL BE MOSTLY DRY. FORECAST HIGH
TEMPERATURES WILL GENERALLY BE NEAR OR ABOVE EARLY JANUARY
AVERAGES ALONG THE NORTHERN TIER OF THE COUNTRY FROM THE NORTHERN
PLAINS THROUGH THE GREAT LAKES AND INTO THE NORTHEAST, AS WELL AS
FOR THE INTERIOR WEST, CENTRAL PLAINS, AND MIDDLE MISSISSIPPI
VALLEY. CONDITIONS WILL REMAIN BELOW AVERAGE AND A BIT CHILLY FOR
TEXAS INTO THE SOUTHEAST FOLLOWING A RECENT FRONTAL PASSAGE.
TEMPERATURES WILL ALSO FALL BELOW AVERAGE WEDNESDAY FOR CALIFORNIA
AND PORTIONS OF THE GREAT BASIN/DESERT SOUTHWEST AS THE PACIFIC
SYSTEM CONTINUES INLAND.
PUTNAM
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page