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Showing posts from July, 2016

Storminess Continues

Storminess Continues: Strong thunderstorms moved over portions of northern and central Minnesota during the past week, especially on July 11-12 (Mon-Tue). Rainfall totals from 5-7 inches occurred over portions of 10 central Minnesota counties, causing widespread flash flooding. Tornadoes caused some damage to homes, businesses, and farms in Meeker and Stearns Counties. Large hail was reported in 4 Minnesota Counties, the largest, 2.5 inch diameter near Mora.

According to the Minnesota State Climatology Office the storm on July 11-12 was the largest mega-rain event since the Duluth flood of June 19-20, 2012. A mega-rain event is classified as a six-inch rainfall that covers at least a 1000 square miles, with a central core value of at least 8 inches. There have been only 13 such storms documented in Minnesota history, but 6 of these have occurred since 2002. You can read more about this weeks storms at the MN State Climatology Office.



The largest rainfall reported from the storm…

Storminess Continues

Storminess Continues: July 5th (Tuesday) brought severe thunderstorms to many parts of the state, with strong winds and large hail. There were reports of short-lived tornadoes in Swift and Wabasha Counties. At least 8 counties reported large hail (1 diameter or greater), and near Artichoke Lake (Big Stone County) hail stones up to 3 in diameter were observed. In addition 17 counties reported strong winds (60-80 mph), and some associated damage.

Rainfall amounts from these storms were highly variable, with the largest amounts reported across a swath from west-central Minnesota through the Twin Cities Metro Area, and southeastern counties. Many observers recorded over 2 inches, and some reported new record daily amounts for July 5th, including: 4.51 at Morris, 2.14 at Artichoke Lake, and 1.77 at Moose Lake. Then on the July 6th Waseca reported a record 3.03 inches of rain,and on July 7th Park Rapids reported a new record daily rainfall of 2.11 inches. In many cases these record or…