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This website is dedicated to the study of snow and other winter weather. The content includes case summaries of individual storms, discussions of winter precipitation processes, and brief winter climate profiles of certain cities and regions of the United States. The site focuses most on Duluth, MN and it's surrounding communities including the city of Superior, WI at the western tip of Lake Superior.

SNINCR is a remark that can be placed in Meteorological Aerodrome Reports (METARs) and stands for "Snow Increasing Rapidly". For example, "SNINCR 2/8" indicates 2 inches of snow accumulated in the past hour with 8 inches total on the ground.

National Weather Service Watches, Warnings, and Advisories

Latest Favorite Storms Summary

Heavy Wet Snow - Duluth, MN
December 26 to 28, 2018
Radar loop is from the National Weather Service in Duluth, MN


The unnamed hurricane which occurred from the end of October to start of November 1991, made famous in the movie "The Perfect Storm", is shown in this NOAA GOES-7 satellite image. But another storm is also raging. Look at the satellite image again and notice on the upper left edge of the image the big swirl of clouds over Minnesota, Wisconsin, and Iowa. That storm became known as the Halloween Blizzard of 1991. From October 31st to November 3rd the storm buried eastern Minnesota and adjacent sections of western Wisconsin with 24+ inches of snow generally along interstate 35 from Minneapolis to Duluth and the arrowhead of Minnesota. Duluth received 36.9 inches, the largest snowstorm on record for the city.