153
FOUS11 KWBC 300807
QPFHSD
PROBABILISTIC HEAVY SNOW AND ICING DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
407 AM EDT THU APR 30 2026
VALID 12Z THU APR 30 2026 - 12Z SUN MAY 03 2026
..SOUTHERN ROCKIES
DAYS 1-2...
SURFACE HIGH PRESSURE OVER THE CENTRAL GREAT PLAINS PROVIDES SOME
RETURN FLOW AND MOISTURE UP THE SOUTHERN HIGH PLAINS TO A FRONTAL
BOUNDARY OVER COLORADO ROCKIES THROUGH TODAY WHERE MOUNTAIN SNOW
PERSISTS. UPPER LOW PRESSURE CURRENTLY OFF THE NORTHERN BAJA
CROSSES SOUTH OF ARIZONA TONIGHT AIDING LIFT OVER SOUTHERN NM WITH
ADDITIONAL LIFT FOR THE SOUTHERN ROCKIES IN NORTHERN NM. SNOW
LEVELS REMAIN 6000-7000FT IN CO TODAY WITH DAY 1 SNOW PROBS FOR >6"
40-80% DOWN CENTRAL CO RANGES FROM THE FRONT RANGE THROUGH THE
SANGRE DE CRISTOS. SNOW LEVELS IN THE SAN JUANS AND SOUTHERN SANGRE
DE CRISTOS IN NORTHERN NM DROP FROM AROUND 9000FT TO 8000FT TONIGHT
WHERE DAY 2 SNOW PROBS FOR >6" ARE 30-60%.
SNOW LEVELS REMAIN 10,000FT OR HIGHER IN SOUTHERN NM WITH JUST RAIN
EXPECTED THERE ON FRIDAY. PRECIP SHIFTS EAST OF NM FRIDAY AFTERNOON
AS THE SOUTHERN TIER LOW OPENS INTO A PROGRESSIVE TROUGH OVER
TEXAS.
THE PROBABILITY FOR SIGNIFICANT ICING OVER ONE-TENTH OF AN INCH IS
LESS THAN 10 PERCENT ACROSS THE CONUS.
JACKSON
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