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Minnesota WeatherTalk: A blog worth the read!

There are many great resources for Minnesotans here at the U of MN. One of my favorite weekly blogs is Minnesota WeatherTalk by climatologist Dr. Mark Seely and the following, fascinating excerpt from this week's post is why:

April 2-3, 1982 All Four Seasons Were Sampled:

Following one of the snowiest winter seasons in state history (over 90 inches in the Twin Cities), April 2, 1982 brought the first severe weather day of the spring season to western Minnesota. Many portions of southwestern Minnesota were under a severe thunderstorm watch that day. Bright sun, strong southerly winds, recent loss of snow cover, accelerated the daily temperature rise, producing afternoon highs in the 70s F. It reached 78°F at Lamberton, 77°F at Worthington, 75°F at Windom, and 68°F at St Peter, all readings about 15-20 degrees F above normal.

Atmosphere instability brought by the clash of an air mass from the southwestern USA and an air mass which dropped down from Alberta, Canada caused huge billowing clouds and thunderstorms to form by late afternoon. No tornadoes, but some severe thunderstorms, with hail developed that afternoon dropping from 1 to 1.5 inches of rainfall in many places. Later that night the precipitation turned to snow, dropping an inch at Luverne and Pipestone, but much more in northern communities, including a statewide record of 14 inches at Kettle Falls in Voyageurs National Park.

Strong northwest winds accompanied the cold front and temperatures dropped dramatically overnight, so that 12-14 hours later on the morning of April 3rd Lamberton reported 7°F, Windom 10°F, Worthington 12°F, and St Peter a record low of just 4°F. All of these climate stations saw a record drop of 64 to 71 degrees F in a 14-hour period.

Read on and sign up to receive Minnesota WeatherTalk

--Julie Weisenhorn, Extension Educator, Horticulture


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