274
FXUS01 KWBC 172046
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
345 PM EST SAT FEB 17 2024
VALID 00Z SUN FEB 18 2024 - 00Z TUE FEB 20 2024
...ADDITIONAL HEAVY TO EXCESSIVE RAINFALL COULD LEAD TO FLASH
FLOODING ACROSS MUCH OF COASTAL CALIFORNIA...
...HEAVY RAINFALL LIKELY OVER MUCH OF THE FLORIDA PENINSULA FOR
THE REMAINDER OF THE WEEKEND...
...COLDER THAN NORMAL CONDITIONS ACROSS THE EASTERN AND SOUTHERN
U.S. WILL BE FOLLOWED BY A WARMING TREND ACROSS THE MID-SECTION OF
THE COUNTRY...
THE WEST COAST WILL ONCE AGAIN BE THE FOCUS OF INCLEMENT WEATHER
OVER THE NEXT COUPLE OF DAYS AS MORE ENERGETIC LOW PRESSURE
SYSTEMS FROM THE PACIFIC LINE UP TO PUSH ONSHORE. THE FIRST
SYSTEM OF CONCERN HAS ALREADY BROUGHT WIDESPREAD MODERATE TO
LOCALLY HEAVY RAIN FOR THE COASTAL PACIFIC NORTHWEST AND DOWN INTO
THE NORTHERN HALF OF CALIFORNIA TODAY (SATURDAY). THE MOISTURE
WILL ADVANCE FARTHER INLAND TO BRING A PERIOD OF MOUNTAIN SNOW
ACROSS THE INTERIOR SECTIONS OF THE NORTHWESTERN U.S. AND NORTHERN
ROCKIES THROUGH SUNDAY. A MORE POTENT LOW PRESSURE SYSTEM WILL
QUICKLY FOLLOW IN ITS WAKE TO DELIVER THE NEXT ROUND OF HEAVY
PRECIPITATION, THIS TIME MAINLY ACROSS CALIFORNIA STARTING SUNDAY
NIGHT/EARLY MONDAY. WPC HAS A SLIGHT RISK OF EXCESSIVE RAINFALL
COVERING A GOOD PORTION OF NORTHERN CALIFORNIA AND CENTRAL COASTAL
CALIFORNIA INTO SUNDAY AND MONDAY, WITH A MODERATE RISK IN EFFECT
FOR THE SANTA BARBARA TO SANTA MARIA REGION FOR THE SAME TIME
PERIOD. VERY HEAVY SNOWFALL WILL THEN IMPACT THE SIERRA NEVADA ON
MONDAY WHERE A FEW FEET OF NEW SNOW CAN BE EXPECTED.
ELEVATION-DEPENDENT RAIN/SNOW WILL THEN SPREAD NORTHEASTWARD INTO
THE GREAT BASIN ON MONDAY.
AFTER A QUICK ROUND OF LOCALLY HEAVY SNOW SATURDAY MORNING, THE
MID-ATLANTIC STATES WILL CLEAR OUT BEHIND A DEPARTING LOW PRESSURE
SYSTEM. COLDER THAN NORMAL CONDITIONS INITIALLY BLANKETING MUCH
OF THE EASTERN AND SOUTHERN U.S. WILL BE FOLLOWED BY A WARMING
TREND ACROSS THE MID-SECTION OF THE COUNTRY--EMERGING FIRST OVER
THE NORTHERN PLAINS THEN GRADUALLY SPREADING SOUTH TO REACH TEXAS
BY MONDAY. MEANWHILE, LAKE-EFFECT SNOWS DOWNWIND FROM THE GREAT
LAKES WILL GRADUALLY TAPER OFF BY SUNDAY. FARTHER NORTH, A
CLIPPER SYSTEM SLIDING ACROSS SOUTHERN CANADA WILL ONLY BRING
LIGHT SNOW ACROSS THE UPPER MIDWEST AND UPPER GREAT LAKES ON
SUNDAY, BEFORE BRUSHING THE LOWER GREAT LAKES AND NORTHERN NEW
ENGLAND ON MONDAY.
MEANWHILE, RAIN AND THUNDERSTORMS ASSOCIATED WITH A SLOW-MOVING
FRONT ARE FORECAST TO EXPAND ACROSS THE FLORIDA PENINSULA THROUGH
TONIGHT. BY SUNDAY, A LOW PRESSURE CENTER DEVELOPING ALONG THE
FRONT OVER THE GULF OF MEXICO WILL TRAVERSE THE FLORIDA PENINSULA
LATER THAT NIGHT BEFORE MOVING OUT INTO THE ATLANTIC ON MONDAY.
GENERALLY A COUPLE OF INCHES OF RAIN, WITH LOCALLY HIGHER AMOUNTS,
CAN BE EXPECTED WITH THIS SYSTEM.
KONG
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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