SPC Tornado Watch 434

WW 434 TORNADO IL IN MI LM 181700Z – 190000Z

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 434
NWS Storm Prediction Center Norman OK
1200 PM CDT Wed Jun 18 2025

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Northeast Illinois
  Northern and Central Indiana
  Southwest Lower Michigan
  Lake Michigan

* Effective this Wednesday afternoon and evening from NOON until
  700 PM CDT.

* Primary threats include...
  A few tornadoes likely with a couple intense tornadoes possible
  Scattered damaging winds likely with isolated significant gusts
    to 75 mph possible
  Scattered large hail events to 1.5 inches in diameter possible

SUMMARY...Intense thunderstorms currently developing over central
Illinois will spread northeastward through the afternoon.  High
instability and favorable wind fields will promote a risk of
damaging winds and tornadoes.

The tornado watch area is approximately along and 85 statute miles
east and west of a line from 25 miles north northwest of South Bend
IN to 35 miles south of Bloomington IN. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU4).

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 432...WW 433...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24035.

...Hart

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