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Hail the size of tennis balls, grapefruit slams locations near the Twin Cities

Watertown and Delano were hammered with very large hail.

A supercell thunderstorm that developed near Hutchinson quickly intensified early Monday afternoon and produced very large hail from Watertown to Delano and up through the northwest metro area. 

In Watertown and Delano, hail the size of tennis balls, baseballs and even one report of a grapefruit-sized hailstone have been reported. 

The hail was big enough – and fell hard enough – to break windows in Watertown. 

In Delano, tennis ball-sized hail was common, but nothing topped the 4-inch diameter hail (grapefruit) that hammered the 1500 block of 5th St. SW. The photos in the top tweet below were taken by Lindsay van Bergen of L.O.v.B Photography

WCCO's Jason DeRusha lives in Maple Grove and captured video of what he described as hail the size of ping pong balls bouncing off his deck. 

More storms possible within new severe t-storm watch

For the second time Monday, the Twin Cities is included in a severe thunderstorm watch. This one is in effect until 10 p.m. The primary threats include: 

  • Damaging wind gusts to 70 mph
  • Large hail and isolated very large hail

"As storms continue to increase -- and likely organize eventually into a south/southeastward-moving MCS (line of storms), risk for severe weather will likewise ramp up," says the Storm Prediction Center. 

t-storm watch

Here's what the latest HRRR model is suggesting for the rest of the day. If it proves accurate, the metro area could get another shot of strong storms before a line develops and moves through southeast Minnesota. 

hrrr_ref_frzn_ncus_fh1-11 (2)

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