Minnesota weather: 2 rounds of severe Memorial Day storms possible – WCCO

UPDATE (Monday 6 a.m.): A severe thunderstorm warning has been issued for Aitkin, Carlton, Itasca, Pine and St. Louis counties until 6:30 a.m.

UPDATE (Monday 5:35 a.m.): Much of the Twin Cities area and west-central Minnesota were abandoned by a severe thunderstorm watch, but northern Minnesota and southwestern Minnesota remain under watch through the morning.

UPDATE (Monday 5:30 a.m.): Xcel Energy reports that about 12,000 Minnesota customers are without power as severe storms unfold Monday morning.

UPDATE (Monday 5:10 a.m.): Several counties in Minnesota are under severe thunderstorm warnings Monday morning.

A warning has been issued for the following counties until 5:45 a.m.: Aitkin, Carlton, Cass, Crow Wing, Itasca, Pine, Benton, Isanti, Kanabec, Mille Lacs and Morrison.

Additionally, a severe thunderstorm watch has been issued for most of central and southwestern Minnesota through 8 a.m.

Pine, Carlton and St. Louis counties are under severe thunderstorm watch until 10 a.m.

MINNEAPOLIS (WCCO) — We are tracking two sets of possible severe storms on Memorial Day.

Besides storm potential, Monday will be hot and humid, with highs of 90 in the Twin Cities.

MORE: With Memorial Day forecast to be severe weather, it’s worth having a storm plan in place

There is a moderate chance of severe weather Monday – a Category 4 in 5 – from the Twin Cities to the west. This level of severity only occurs about twice a year in the state and only about once a year in the metro.

The first round of storms will occur early Monday morning, with the storm system moving southwest to northeast in Minnesota. Wind is the main threat with this storm, which could bring gusts of over 70 mph.

(credit: CBS)

There should be a break in storm activity beginning at noon, with the second round arriving around dinnertime.

This system will be a line of storms that initiates in western Minnesota and moves eastward. This line presents a higher threat of tornadoes than the first set of storms – and those odds are highest for western Minnesota.

This region is also at moderate risk of damaging hail Monday, and most of the state — except for Arrowhead and far eastern Minnesota — is also at moderate risk of damaging winds.

The serious threat will lessen around 10 p.m. Monday.

Tuesday will be less humid, cooler, but there will still be a risk of thunderstorms. We will then enjoy a calm mid-week, with highs in the 70s and lows in the 50s.

More thunderstorms are possible next weekend.

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