339
FOUS11 KWBC 190611
QPFHSD
PROBABILISTIC HEAVY SNOW AND ICING DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
211 AM EDT THU MAR 19 2026
VALID 12Z THU MAR 19 2026 - 12Z SUN MAR 22 2026
..UPPER GREAT LAKES TO THE NORTHEAST
DAYS 1-3...
THANKS TO A DOME OF UPPER-LEVEL RIDGING FIRMLY ENTRENCHED OVER
THE WEST AND NORTHERLY LOW-LEVEL WINDS OVER THE MID-SOUTH ALL BUT
CUTTING OFF GULF MOISTURE, A QUIET PATTERN WITH RESPECT TO HEAVY
SNOW AND ICING WILL CONTINUE. THE LONE CASES WHERE LIGHT SNOW
ACCUMULATIONS ARE ANTICIPATED ARE ACROSS THE UPPER GREAT LAKES AND
NORTHEAST AS CANADIAN CLIPPER SYSTEMS RACE ACROSS THE SOUTHERN
TIER OF THE COUNTRY AND OCCASIONAL PASS THROUGH. A CLIPPER OVER
ONTARIO WILL DIRECT A WARM FRONT THROUGH THE NORTHEAST WITH MINOR
SNOWFALL TOTALS (GENERALLY A COATING-2", WITH LOCAL 2-3" IN THE
ADIRONDACKS AND WHITE MOUNTAINS) THROUGH THURSDAY. AS THAT SYSTEM
EXITS OVER ATLANTIC CANADA, A MORE ORGANIZED CLIPPER WILL BE
TRACKING TOWARDS LAKE SUPERIOR. LIGHT SNOW WILL ENSUE ALONG THE
WARM FRONT OVER THE U.P. OF MI, THURSDAY NIGHT AND INTO FRIDAY AM,
THEN RACE OVER NORTHERN NY AND NORTHERN NEW ENGLAND FRIDAY
AFTERNOON AND EVENING.
THERE ARE SOME HINTS IN AI GUIDANCE (EC-AIFS MOST NOTABLY) THAT THE
CLIPPER COULD STRENGTHEN BY THE TIME IT REACHES DOWNEAST MAINE
EARLY SATURDAY MORNING. THIS COULD LEAD TO LOCALLY HEAVIER SNOWFALL
IN THE GREENS, WHITES, AND NORTHERN ME ON SATURDAY. AT THE MOMENT,
WPC PROBABILITIES SHOWS LOW CHANCES (10-30%) CHANCES FOR SNOWFALL
>4" IN NORTHERN ME WITH MOST SNOWFALL GENERALLY UNDER 3". BUT THIS
WILL BE CLOSELY MONITORED GIVEN THE GENERALLY GOOD PERFORMANCE OF
THE EC-AIFS FOR MUCH OF THE COLD SEASON.
THE CHANCES FOR SIGNIFICANT ICING ACROSS THE CONUS IS LESS THAN 10
PERCENT.
MULLINAX
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