Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for Watch Status Reports.
SEL3 URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 563 NWS Storm Prediction Center Norman OK 120 PM CST Wed Dec 15 2021 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Western and central Iowa Northeastern Kansas South central Minnesota Northwestern Missouri Easterm Nebraska Extreme southeastern South Dakota * Effective this Wednesday afternoon and evening from 120 PM until 800 PM CST. * Primary threats include... A few tornadoes likely with a couple intense tornadoes possible Widespread damaging winds and isolated significant gusts to 90 mph likely Isolated large hail events to 1 inch in diameter possible SUMMARY...A developing squall line will move rapidly northeastward from northern Kansas and Nebraska across Iowa and adjacent areas of Minnesota and Missouri through this evening. Widespread damaging winds are expected, with peak gusts near 90 mph possible. A mix of embedded supercells and smaller-scale circulations in the line will also pose a threat for tornadoes, with a strong tornado or two possible. The tornado watch area is approximately along and 110 statute miles north and south of a line from 15 miles southwest of Hastings NE to 50 miles south southeast of Mason City IA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU3). 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. && AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 80 knots. A few cumulonimbi with maximum tops to 450. Mean storm motion vector 23060. ...Thompson