566
FXUS01 KWBC 192001
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
401 PM EDT TUE MAR 19 2024
VALID 00Z WED MAR 20 2024 - 00Z FRI MAR 22 2024
...LAKE EFFECT SNOW CONTINUES DOWNWIND OF LAKE ONTARIO, BEFORE A
DEVELOPING LOW PRESSURE SYSTEM SPREADS SNOWFALL EAST INTO NORTHERN
NEW ENGLAND TOMORROW...
...LIGHT TO MODERATE SNOW ENTERS THE NORTHERN PLAINS MIDWEEK AND
PUSHES INTO THE UPPER MIDWEST ON THURSDAY...
...SHOWER AND THUNDERSTORM CHANCES RETURN TO THE SOUTHERN PLAINS
AND WESTERN GULF COAST...
COOL AND BREEZY WEATHER REMAINS ENTRENCHED ACROSS THE EASTERN HALF
OF THE COUNTRY AS A SECONDARY COLD FRONT OVER THE MIDWEST
REINFORCES THE CHILLY AIRMASS OVERHEAD. ONE CONSEQUENCE OF THE
RENEWED NORTHWEST FLOW CROSSING OVER RELATIVELY WARM LAKE WATERS
WILL BE ADDITIONAL LAKE EFFECT SNOW SHOWERS FOCUSED DOWNWIND OF
LAKE ONTARIO IN NEW YORK, WHICH WILL BE FURTHER ENHANCED AS A LOW
PRESSURE SYSTEM CROSSES FROM SOUTHERN ONTARIO, CANADA TOWARDS
MAINE THROUGH EARLY THURSDAY. THE FORECAST CONTINUES TO HIGHLIGHT
MEDIUM PROBABILITIES (40-70%) FOR AT LEAST 6 INCHES OF SNOW
THROUGH THURSDAY ACROSS PORTIONS OF THE INTERIOR NORTHEAST AND NEW
ENGLAND. GUSTY WINDS AND BELOW AVERAGE TEMPERATURES ARE FORECAST
IN THE SYSTEM'S WAKE, WITH HIGHS ONLY EXPECTED TO REACH INTO THE
30S AND 40S THROUGHOUT THE GREAT LAKES, OHIO VALLEY, AND NORTHEAST
BY THE END OF THE WORK WEEK.
OVER THE NATION'S HEARTLAND, SNOW POTENTIAL WILL RETURN TO THE
NORTHERN PLAINS AND ROCKIES TOMORROW MORNING AS A STALLING COLD
FRONT INTERACTS WITH FAVORABLE JET STREAM DYNAMICS. NORTHWEST
MONTANA MAINTAINS THE HIGHEST CHANCES OF SEEING OVER 4 INCHES OF
SNOWFALL (80%), ALTHOUGH PORTIONS OF THE NORTHERN PLAINS AND
MIDWEST COULD LOCALLY EXCEED 4 INCHES BY FRIDAY AS A LOW PRESSURE
WAVE SPINS UP ALONG THE AFOREMENTIONED STATIONARY FRONT.
UNCERTAINTY REMAINS ON EXACTLY WHERE THE HEAVIEST SNOWBANDS MAY
SET UP, BUT RESIDENTS SHOULD REMAIN WEATHER AWARE AND PREPARE FOR
POTENTIALLY DIFFICULT TRAVEL ACROSS THE UPPER MIDWEST BETWEEN
THURSDAY NIGHT AND FRIDAY MORNING.
IN THE WARM SECTOR OF THE FONT, RAIN AND THUNDERSTORM CHANCES
RETURN ON WEDNESDAY AS AN UPPER LOW LINGERING OVER THE SOUTHWEST
FINALLY EJECTS EASTWARD. A FEW ISOLATED THUNDERSTORMS COULD TURN
SEVERE OVER WESTERN OKLAHOMA AND THE TEXAS PANHANDLE, AS WELL AS
SOUTH-CENTRAL TEXAS. BY THURSDAY, HEAVY RAIN MAY DEVELOP ALONG THE
TEXAS AND LOUISIANA GULF COAST, WHICH COULD LEAD TO ISOLATED
FLOODING CONCERNS.
AS FAR AS THE TEMPERATURE HIGHLIGHTS FOR THE SHORT TERM TIME
PERIOD, LINGERING FROST CONCERNS REMAIN ACROSS PORTIONS OF THE
SOUTHEAST THROUGH TOMORROW MORNING, ALTHOUGH THIS COLD SNAP IS
FORECAST TO BE SHORT-LIVED AS TEMPERATURES WARM TO NEAR AVERAGE BY
THURSDAY ACROSS THE SOUTH. MEANWHILE, ABOVE AVERAGE TEMPERATURES
ARE EXPECTED TODAY ACROSS THE CENTRAL PLAINS AND NORTHWEST. A FEW
DAILY TEMPERATURE RECORDS REMAIN POSSIBLE TODAY ACROSS THE
NORTHERN GREAT BASIN AND PACIFIC NORTHWEST AS THERMOMETER READINGS
SOAR INTO THE 70S.
ASHERMAN/SNELL
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