427
FOUS11 KWBC 141805
QPFHSD
PROBABILISTIC HEAVY SNOW AND ICING DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
205 PM EDT WED OCT 14 2026
VALID 00Z THU OCT 15 2026 - 00Z SUN OCT 18 2026
..CENTRAL ROCKIES
DAY 1...
THE MID-LEVEL LOW NEAR THE FOUR CORNERS THIS MORNING WILL MOVE
INTO WESTERN COLORADO LATER THIS AFTERNOON AND EARLY EVENING. THIS
SYSTEM WILL WEAKEN AS IT REACHES THE CENTRAL PLAINS BY THURSDAY.
ADDITIONAL LIGHT TO MODERATE HIGHER ELEVATION SNOW IS EXPECTED TO
IMPACT TO PORTIONS UT/CO/WY OVER THE NEXT 24 HRS, ENDING FROM WEST
TO EAST OVER UTAH TONIGHT AND LASTLY OVER THE CO ROCKIES TOMORROW
EVENING. SNOW LEVELS IMMEDIATELY AHEAD OF THE SYSTEM ARE HIGH
(8000-10,000FT), BUT WILL GRADUALLY LOWER AS THE UPPER LOW MOVES
OVERHEAD TO ABOUT 6500-9000FT FROM UT TO CO. ANY SIGNIFICANT
SNOWFALL ACCUMULATIONS ARE EXPECTED TO REMAIN IN THE ELEVATED
TERRAIN, THOUGH THIS DOES INCLUDE HIGH PASSES LIKE I-70/EISENHOWER
TUNNEL AT JUST OVER 11,000FT AND VAIL PASS AT 10,666FT. WPC
PROBABILITIES FOR AT LEAST AN ADDITIONAL 8 INCHES OF SNOW ARE >50%
ABOVE 10,000FT IN UINTAS OF UT, CO ROCKIES, AND SOUTH-CENTRAL WY.
SOME LIGHTER ACCUMULATIONS COULD FALL AS LOW AS 6000 OR 7000 FEET
AS THE UPPER LOW MOVES OVERHEAD IN SOUTHEAST WY EARLY THURSDAY. THE
HIGHEST ADDITIONAL AMOUNTS WILL BE ACROSS THE MEDICINE BOW AND
PARK RANGE OF NORTHERN CO, AS WELL AS THE UINTA MTS IN UT, WHERE UP
TO A FOOT IS POSSIBLE. WSSI-P FOR MODERATE IMPACTS ALSO HIGHLIGHTS
THESE LOCATIONS, BUT WITH 10-30% VALUES.
FOR DAYS 1-3, THE PROBABILITY OF SIGNIFICANT ICING ACROSS THE
CONUS IS LESS THAN 10 PERCENT.
FRACASSO/SNELL
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