011
FXUS01 KWBC 141936
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
335 PM EDT SAT OCT 14 2023
VALID 00Z SUN OCT 15 2023 - 00Z TUE OCT 17 2023
...DEPARTING STORM SYSTEM TO RESULT IN THE ARRIVAL OF COOLER,
CRISP AUTUMN AIR THROUGHOUT THE EASTERN HALF OF THE LOWER 48...
...IN CONTRAST, TEMPERATURES REBOUND TO NEAR SUMMER-LIKE LEVELS IN
WEST WITH MOSTLY DRY CONDITIONS...
..COOLER AND WETTER REGIME EXPECTED IN THE PACIFIC NORTHWEST
IT IS A DAMP AND DREARY AFTERNOON FROM THE GREAT LAKES TO THE EAST
COAST THANKS TO ONE STORM SYSTEM TRACKING ACROSS THE NORTHERN
MID-ATLANTIC AND A SECOND STORM SYSTEM TRACKING NORTHEAST OVER
EASTERN NORTH CAROLINA. AS THEY TRACK OFF THE COAST LATER TONIGHT,
SPOTTY SHOWERS WILL LINGER IN THEIR WAKE TONIGHT. BY SUNDAY,
HIT-OR-MISS SHOWERS WILL REMAIN IN THE FORECAST IN THE GREAT
LAKES, OH/TN VALLEYS, AND PARTS OF THE NORTHEAST THANKS TO
PERSISTENT NORTHERLY FLOW OVER THE GREAT LAKES. THE BIGGER WEATHER
STORY, HOWEVER, BECOMES THE FRESH INJECTION OF AUTUMN TEMPERATURES
AND BLUSTERY WINDS AS HIGH PRESSURE BUILDS IN FROM THE WEST AND
THE AFOREMENTIONED STORM SYSTEM OFF THE EASTERN SEABOARD
STRENGTHENS. DAYTIME HIGHS FROM THE GREAT PLAINS TO THE EAST COAST
LOOK TO AVERAGE AS MUCH AS 10-20 DEGREES BELOW NORMAL. LOW TEMPS
SUNDAY AND MONDAY MORNINGS WILL DROP INTO THE 40S FROM THE FRONT
RANGE OF THE ROCKIES TO THE EAST COAST, WITH THE LONE EXCEPTIONS
BEING ALONG THE GULF COAST. MONDAY LOOKS EVEN COOLER FOR PARTS OF
THE MID-SOUTH AND THE APPALACHIANS WHERE DAYTIME HIGHS WILL
STRUGGLE TO GET OUT OF THE 50S IN SOME LOCATIONS. MOST OF THE
PLAINS AND EASTERN U.S. WILL WITNESS DRY CONDITIONS, BUT WIDELY
SCATTERED SHOWERS IN THE EASTERN GREAT LAKES, APPALACHIANS, AND
NORTHEAST ARE POSSIBLE SUNDAY AND MONDAY.
WHILE THE EAST PLUNGES INTO A MORE AUTUMN-LIKE TEMPERATURE REGIME,
AN AMPLIFYING RIDGE OVER THE WEST IS SET TO FOSTER MORE
SUMMER-LIKE TEMPERATURES BY THE START OF THE WORK-WEEK. DAYTIME
HIGHS ARE FORECAST TO RANGE BETWEEN 5-15 DEGREES ABOVE NORMAL ON
SUNDAY, THEN JUMP AS HIGH AS 20 DEGREES ABOVE NORMAL IN PARTS OF
THE DESERT SOUTHWEST AND BOTH THE NORTHERN ROCKIES AND HIGH
PLAINS. THE DOME OF UPPER LEVEL RIDGING WILL ALSO PLAY A BIG ROLE
IN MAINTAINING A DRY START TO THE UPCOMING WEEK. THE ONLY
EXCEPTION IS THE PACIFIC NORTHWEST, WHERE A SERIES OF STORM
SYSTEMS TRACKING THROUGH THE NORTHWEST PACIFIC DELIVERS PERIODS OF
RAIN TO WESTERN WASHINGTON AND OREGON. THE FIRST FRONTAL SYSTEM
LOOKS TO PRODUCE PERIODS OF RAIN IN WESTERN WASHINGTON TONIGHT AND
INTO SUNDAY, WITH A SECOND AND MORE POTENT STORM PRODUCING
WIDESPREAD SHOWERS AS FAR SOUTH AS NORTHERN CALIFORNIA. THIS
LATTER STORM WILL ALSO USHER IN A SEASONALLY COOLER AIR-MASS TO
THE NORTHWEST BY TUESDAY.
MULLINAX
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