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Tornado Watch 111
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WW0111 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Moderate Moderate
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
High High

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL1

   URGENT - IMMEDIATE BROADCAST REQUESTED
   Tornado Watch Number 111
   NWS Storm Prediction Center Norman OK
   335 PM CDT Tue Apr 12 2022

   The NWS Storm Prediction Center has issued a

   * Tornado Watch for portions of 
     Northwest Iowa
     Northeast Nebraska
     Extreme southeast South Dakota

   * Effective this Tuesday afternoon and evening from 335 PM until
     1000 PM CDT.

   * Primary threats include...
     A few tornadoes likely with a couple intense tornadoes possible
     Scattered large hail and isolated very large hail events to 2.5
       inches in diameter likely
     Scattered damaging winds likely with isolated significant gusts
       to 75 mph possible

   SUMMARY...Supercell development will be possible in the next couple
   of hours, near and east of a surface cyclone along the
   Nebraska/South Dakota border.  The storm environment will continue
   to become more favorable for a few tornadoes (a couple of which
   could be strong) and very large hail, if storms can mature quickly
   enough in the relatively narrow, unstable warm sector near the warm
   front.  Damaging winds will also be possible, especially late this
   evening when storms could grow upscale into a squall line along the
   cold front approaching from the west.

   The tornado watch area is approximately along and 60 statute miles
   east and west of a line from 50 miles northeast of Yankton SD to 45
   miles south of Sioux City IA. For a complete depiction of the watch
   see the associated watch outline update (WOUS64 KWNS WOU1).

   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 110...

   AVIATION...Tornadoes and a few severe thunderstorms with hail
   surface and aloft to 2.5 inches. Extreme turbulence and surface wind
   gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean
   storm motion vector 22040.

   ...Thompson
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