892
FXUS01 KWBC 121855
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
254 PM EDT FRI APR 12 2024
VALID 00Z SAT APR 13 2024 - 00Z MON APR 15 2024
...POWERFUL LOW PRESSURE SYSTEM TO CONTINUE PRODUCING GUSTY WINDS
AND HEAVY RAIN ACROSS PARTS OF THE GREAT LAKES, OHIO VALLEY,
NORTHEAST, AND APPALACHIANS THROUGH TONIGHT...
...LOWER ELEVATION RAIN AND MOUNTAIN SNOW TO ENTER CALIFORNIA ON
SATURDAY...
...WELL ABOVE AVERAGE TEMPERATURES FORECAST TO SURGE INTO THE
NORTHERN/CENTRAL PLAINS THIS WEEKEND...
A DEEP LOW PRESSURE SYSTEM CHURNING OVER SOUTHEAST ONTARIO, CANADA
THIS AFTERNOON IS RESPONSIBLE FOR WIDESPREAD SHOWER ACTIVITY
EXTENDING FROM THE GREAT LAKES AND UPPER OHIO VALLEY TO NEW
ENGLAND. ADDITIONAL HEAVY RAIN IS POSSIBLE THROUGH TONIGHT ACROSS
NEW ENGLAND AND PARTS OF UPSTATE NEW YORK. ISOLATED INSTANCES OF
FLASH FLOODING ARE POSSIBLE, ESPECIALLY WHERE RECENT SNOWMELT HAS
LED TO ELEVATED RIVER LEVELS AND SATURATED SOIL. FLOOD WATCHES AND
WARNINGS ARE IN EFFECT FOR PARTS OF NORTHERN NEW HAMPSHIRE AND
WESTERN/CENTRAL MAINE. ADDITIONALLY, A FEW THUNDERSTORMS ARE
POSSIBLE AND COULD TURN SEVERE OVER EASTERN NEW YORK AND WESTERN
NEW ENGLAND. A TIGHT PRESSURE GRADIENT IS ALSO PRODUCING GUSTY
WINDS SURROUNDING THE STORM SYSTEM. WIND ADVISORIES ARE IN EFFECT
FOR PARTS OF THE GREAT LAKES, OHIO VALLEY, AND APPALACHIANS DUE TO
THE POTENTIAL FOR WIND GUSTS UP TO 50 MPH. AS THE SYSTEM EXITS
DEEPER INTO CANADA ON SATURDAY, RAIN COULD CHANGE TO SNOW OVER
PARTS OF NORTHERN PENNSYLVANIA AND NEW YORK, WITH WINDS GRADUALLY
WANING.
FOR THE WEST COAST, AN APPROACHING STORM SYSTEM IS EXPECTED TO
SPREAD LOWER ELEVATION RAIN AND HIGH ELEVATION SNOW TO CALIFORNIA
BEGINNING TONIGHT. RAIN COULD BE HEAVY ENOUGH AT TIMES ALONG THE
CENTRAL AND SOUTHERN COASTAL RANGES TO PRODUCE ISOLATED FLOODING
CONCERNS. THE SIERRA NEVADA AND NORTHERN CALIFORNIA MOUNTAIN
RANGES COULD SEE UPWARDS OF 6 TO 12 INCHES OF SNOWFALL. MEANWHILE,
GUSTY WINDS ARE FORECAST TO DEVELOP OVER THE HIGH DESERT REGIONS
OF EASTERN CALIFORNIA AND NEVADA ON SATURDAY, WHERE HIGH WIND
WARNINGS, WATCHES, AND WIND ADVISORIES ARE IN EFFECT. AS THE
SYSTEM WEAKENS AND PUSHES INLAND ACROSS THE INTERMOUNTAIN WEST ON
SUNDAY, SHOWERS AND THUNDERSTORMS ARE POSSIBLE ACROSS THE NORTHERN
GREAT BASIN.
OUTSIDE OF AREAS EXPERIENCING RAIN SHOWERS (WEST COAST AND
NORTHEAST) EARLY THIS WEEKEND, WELL ABOVE AVERAGE TEMPERATURES ARE
FORECAST TO DOMINATE THE SECOND WEEKEND OF APRIL. HIGH
TEMPERATURES 20 TO 30 DEGREES ABOVE AVERAGE ARE ANTICIPATED ACROSS
MUCH OF THE PLAINS AND UPPER MIDWEST, WITH THE HIGHEST ANOMALIES
CENTERED OVER THE NORTH-CENTRAL UNITED STATES. THIS EQUATES TO
WIDESPREAD AFTERNOON HIGHS INTO THE UPPER 70S AND 80S. LOW 90S
COULD ALSO BE FELT THROUGHOUT PARTS OF THE CENTRAL AND SOUTHERN
PLAINS BY SUNDAY.
SNELL
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