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SEL7 URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 157 NWS Storm Prediction Center Norman OK 855 PM CDT Sun Apr 20 2025 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Northern Illinois * Effective this Sunday night and Monday morning from 855 PM until 400 AM CDT. * Primary threats include... A couple tornadoes possible Isolated damaging wind gusts to 70 mph possible SUMMARY...Associated with a line of storms, a brief tornado/wind damage risk may develop east-northeastward across additional parts of northern Illinois through mid/late evening. The tornado watch area is approximately along and 30 statute miles east and west of a line from 45 miles north northwest of Marseilles IL to 75 miles south southeast of Marseilles IL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and 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. && OTHER WATCH INFORMATION...CONTINUE...WW 155...WW 156... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean storm motion vector 22035. ...Guyer