NWS Marquette Aviation: Snow and Ice

Cold Front Moving Through the Northeast U.S. Monday; Atmospheric River to Impact the Pacific Northwest Midweek

A cold front will cross the Great Lakes and Northeast U.S. through Monday with gusty winds and areas of rain showers. A strong atmospheric river is expected to move into the Pacific Northwest by midweek bringing a threat for moderate to heavy rainfall, gusty winds, and mountain snows for parts of Washington, Oregon, northern California, and the Sierra Nevada. Read More >

Observations & TAFs	Ceiling & Visibility	Icing / Turb. / Wind	Precipitation	Additional Links

Snowfall Potential

NWS Marquette 6-hourly Forecast Snowfall Amounts

Weather Prediction Center Probability of Snow Amounts

Day 1	≥ 4"	≥ 8"	≥ 12"
Day 2	≥ 4"	≥ 8"	≥ 12"
Day 3	≥ 4"	≥ 8"	≥ 12"

Weather Prediction Center Probability of Snow Amounts

Updates Every 6 Hours. This is an experimental product and may not be available at all times

Modeled Probability of snow ≥1"/hr	Hr 3	Hr 6	Hr 9	Hr 12	Hr 15	Hr 18	Hr 21	Hr 24
6hr Snowfall (Model Average)	Hr 3	Hr 6	Hr 9	Hr 12	Hr 15	Hr 18	Hr 21	Hr 24
12hr Snowfall (Model Average)	Hr 3	Hr 6	Hr 9	Hr 12	Hr 15	Hr 18	Hr 21	Hr 24

Current Modeled Snow Depth

Snow Depth

Snow Water Equivalent

Freezing Rain Potential

Risk Level		Definition
	None	No freezing rain or drizzle
	Limited	Very light freezing rain or drizzle with no accumulation
	Elevated	Freezing rain or drizzle with accumulation < 1/4 inch
	Significant	Freezing rain with accumulation of 1/4 inch to < 1 inch
	Extreme	Freezing rain with accumulation ≥ 1 inch

WPC Probability of Any Freezing Rain

Hr 3

Hr 6

Hr 9

Hr 12

Hr 15

Hr 18

Hr 21

Hr 24