270
FOUS11 KWBC 130636
QPFHSD
PROBABILISTIC HEAVY SNOW AND ICING DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
236 AM EDT TUE OCT 13 2026
VALID 12Z TUE OCT 13 2026 - 12Z FRI OCT 16 2026
..NORTHERN AND WESTERN MAINE
DAY 1...
A COLD FRONT ACROSS CENTRAL NEW ENGLAND HAS ALLOWED TEMPERATURES
OVER NORTHWESTERN MAINE TO FALL INTO THE MID 30S WITH DEW POINTS IN
THE LOW TO MID 30S. TEMPERATURES ALOFT REMAIN ABOVE 0C (KMWN
AROUND 4C). WAA-DRIVEN PRECIPITATION WAS ADVANCING FROM THE WEST,
WHICH COULD RESULT IN A WINTRY MIX OF SLEET AND FREEZING RAIN IN
ESPECIALLY COLDER/SHELTERED AREAS THIS MORNING, WITH LIGHT SNOW
(0.5-1.5") OVER NORTHERN MAINE AND AT HIGHER ELEVATIONS. ANY
GLAZING OF ICE WOULD BE LIGHT, WITH LOW PROBABILITIES (<20%) OF AT
LEAST 0.1" ICING.
..GREAT BASIN TO THE CENTRAL ROCKIES
DAYS 1-3...
THE MID-LEVEL LOW OVER NEVADA WILL PUSH TOWARD THE AZ/UT BORDER BY
LATE TONIGHT AND INTO COLORADO BY LATER WEDNESDAY, FINALLY
REACHING THE CENTRAL PLAINS BY THURSDAY AND WEAKENING. THIS SYSTEM
WILL BRING HIGHER ELEVATION SNOW TO PORTIONS OF NV/UT/CO/WY, ENDING
FROM WEST TO EAST AND LASTLY OVER THE CO ROCKIES THURSDAY EVENING.
SNOW LEVELS WILL START HIGH AHEAD OF THE SYSTEM (8000-10,000FT),
BUT GRADUALLY LOWER AS THE UPPER LOW MOVES OVERHEAD (6500-9000FT).
ANY SIGNIFICANT SNOWFALL ACCUMULATIONS ARE EXPECTED TO REMAIN IN
THE ELEVATED TERRAIN, WHERE WPC PROBABILITIES FOR AT LEAST AN
ADDITIONAL 8 INCHES OF SNOW ARE >50% ABOVE 9000-10,000FT IN UTAH
AND 10,000FT IN COLORADO. SOME LIGHTER ACCUMULATIONS COULD FALL AS
LOW AS 7000 OR 8000 FEET AS THE UPPER LOW MOVES OVERHEAD. THE
HIGHEST AMOUNTS WILL BE IN THE SAN JUAN MOUNTAINS OF SOUTHWEST CO
AND ALSO ACROSS THE MEDICINE BOW AND MOSQUITO RANGE WHERE OVER A
FOOT IS POSSIBLE.
FRACASSO
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