NWS Marquette Aviation: Snow and Ice

Heavy Snow in the Cascades and Northern Rockies; Wintry Mix in the Northeast; High Winds in Southern California

Two more cold fronts will pass through the Northwest U.S. this week with heavy mountain snow continuing across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain across the Northeast U.S. today. High winds could blow down trees and power lines in the mountains of southern California this evening through Thursday. 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