A moderately severe winter
Posted at 8:16 AM on April 25, 2011
by Michael Olson
Filed under: Around MN
The index adds a point to locations based for every day the temperature is below zero and another point for each day where the snow depth exceeds 15 inches. Sam Cook reports the numbers in the Duluth News Tribune:
The highest reading, 193, was at Poplar Lake along the Gunflint Trail. That was the only station that fell into the "severe winter" category, although Snowbank Lake near Ely was close at 177. Here are some other final readings: Grand Rapids, 98; International Falls, 150; Isabella, 159; Eveleth, 150; Cloquet, 112; Brimson, 149; Tower, 164.
Here's how the DNR classifies winters based on the WSI:
Mild winter -- WSI less than 100
Average winter -- WSI of 120
Moderate winter -- WSI 121-140
Moderately severe winter -- WSI 141-180
Severe winter -- WSI more than 180
More winter-like weather is expected this week, but nothing that should significantly impact the Winter Severity Index.
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