Storm Reports from Saturday evening, July 18, 2020

Another round of severe thunderstorms impacted portions of northeast Minnesota and northwest Wisconsin late Saturday afternoon into Saturday evening with numerous reports of large hail and damaging winds. There was one report of 3″ diameter hail near Shaw, Minnesota around 7:30 PM Saturday, that is bigger than a baseball! Also reports of Golf Ball sized hail near Cotton, Minnesota Saturday evening at around 7:30 PM.

Storm Reports from around the Northland from late Saturday afternoon and Saturday evening, July 18, 2020.

Source: https://www.weather.gov/dlh/

10:30 PM: Marine Thunderstorm Wind Gust 45 mph. 5 NE Cedar, WI (Iron County)

10:15 PM: Thunderstorm Wind Damage. Marengo, WI (Ashland County) Tree down across powerline in Marengo.

10:01 PM: Thunderstorm Wind Gust 43 mph. 1 N Drummond, WI (Bayfield County)

9:51 PM: Thunderstorm Wind Gust 59 mph. 12 W Drummond, WI (Bayfield County)

9:29 PM: Marine Thunderstorm Wind Gust 40 mph. 13 NE Sand Bay (Ashland County)

9:17 PM: Marine Thunderstorm Wind Gust 48 mph. La Pointe (Ashland County)

9:14 PM: Thunderstorm Wind Damage. Cornucopia, WI (Bayfield County) Tree down.

9:10 PM: Hail 0.50 inch. 8 WNW Trego, WI (Washburn County)

9:03 PM: Hail 1.00 inch (Quarter sized hail) 6 NE Patzau, WI (Douglas County)

9:00 PM: Marine Thunderstorm Wind Gust 63 mph. 5 WNW Cornucopia, WI.

9:00 PM: Hail 0.25 inch. 4 SE Oliver, WI (Douglas County)

8:50 PM: Hail 1.00 inch (Quarter sized hail) 5 NE Patzau, WI (Douglas County)

8:50 PM: Hail 0.88 inch. 3 E Siren, WI (Burnett County)

8:33 PM: Hail 0.75 inch. 1 E Sturgeon Lake, MN (Pine County)

8:20 PM: Hail 1.00 inch (Quarter sized hail) 3 SE Mahtowa, MN (Carlton County)

8:18 PM: Hail 0.75 inch. 3 SE Mahtowa, MN (Carlton County)

8:15 PM: Hail 0.25 inch. 11 NE Island Lake, MN (St. Louis County)

8:13 PM: Hail 1.00 inch (Quarter sized hail) Barnum, MN (Carlton County)

7:56 PM: Thunderstorm Wind Damage. 10 NNE Island Lake, MN (St. Louis County) 2 aspen trees blown over, 6 inches in diameter.

7:55 PM: Thunderstorm Wind Damage. 7 NNE Island Lake, MN (St. Louis County) At least 8 large pine trees down across County Road 4 / Vermilion Trail between Three Lakes Rd and Island Lake. Road passable.

7:50 PM: Thunderstorm Wind Damage. 2 NE Island Lake, MN (St. Louis County) Trees down.

7:36 PM: Thunderstorm Wind Damage. 2 S Cotton, MN (St. Louis County) Two trees down on powerlines.

7:35 PM: Hail 1.00 inch (Quarter sized) 3 N Shaw, MN (St. Louis County)

7:35 PM: Hail 1.00 inch (Quarter sized hail) Cotton, MN (St. Louis County)

7:33 PM: Hail 1.75 inch (Golf Ball sized hail) 1 S Cotton, MN (St. Louis County)

7:30 PM: Hail 3.00 inch (Tea Cup sized hail, larger than Baseballs) 2 WSW Shaw, MN (St. Louis County)

7:25 PM: Hail 1.75 inch (Golf Ball sized hail) 2 WSW Shaw, MN (St. Louis County)

7:09 PM: Hail 2.00 inch (Hen Egg sized hail) 1 ESE Toivola, MN (St. Louis County)

7:03 PM: Hail 1.00 inch (Quarter sized hail) 6 WSW Toivola, MN (St. Louis County)

6:40 PM: Hail 1.00 inch (Quarter sized hail) Outing, MN (Cass County)

6:30 PM: Hail 0.50 inch. Warba, MN (Itasca County)

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Supercell thunderstorm which moved across southern Carlton County Minnesota Saturday evening had a rather interesting look to it on radar imagery.

No reports of tornadoes with this storm, but this storm had a rather well defined hook echo appearance to it for a brief time.

Notice the blue areas between Barnum and Moose Lake on the CC imagery from Saturday evening, sometimes this can mean a debris ball was being picked up on radar, but no reports of that with this storm, looked interesting though!

Even noticed a brief red/green couplet on radar between Barnum and Moose Lake Saturday evening.

Major hail with both supercells north and south of Duluth Saturday evening, but the one north of Duluth produced the largest hail, bigger than baseball size!

Supercell which moved through southern Carlton County Minnesota eventually moved into west-central Douglas County Wisconsin just before 9 PM Saturday, and once again it had a rather interesting look to it on radar imagery.

Supercell which passed north of Duluth Saturday evening had pretty strong rotation on it at times as shown by the red and blue colors on the image below.

Source: https://www.weather.gov/

A look at radar estimated rainfall totals from the round of storms from late Saturday afternoon into late Saturday evening.

Thanks for reading!

Tim

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