WW 128 SEVERE TSTM MN WI 171420Z - 172200Z URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 128 NWS Storm Prediction Center Norman OK 920 AM CDT Fri Apr 17 2026 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of East-Central and Far Southeast Minnesota Northwest and North-Central Wisconsin * Effective this Friday morning and afternoon from 920 AM until 500 PM CDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Isolated damaging wind gusts to 70 mph possible SUMMARY...Ongoing line of thunderstorms over southeast MN is forecast to continue northeastward. The overall environment ahead of this line is expected to become more supportive of strong to severe storms with time. Additional thunderstorm development is anticipated as well. Large hail is the primary severe risk, although isolated strong gusts are possible as well. The severe thunderstorm watch area is approximately along and 75 statute miles east and west of a line from 105 miles north of Eau Claire WI to 10 miles east of La Crosse WI. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU8). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 24030. ...Mosier Read more

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