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WWUS20 KWNS 010349

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URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 48

NWS Storm Prediction Center Norman OK

950 PM CST Tue Feb 28 2017



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Central, northern and eastern Illinois

  Northwestern Indiana

  Lake Michigan



* Effective this Tuesday night and Wednesday morning from 950 PM

  until 400 AM CST.



* Primary threats include...

  A few tornadoes possible

  Scattered damaging wind gusts to 70 mph possible

  Isolated very large hail events to 2 inches in diameter possible



SUMMARY...The severe-storm threat (including tornadoes) will

continue for several more hours overnight past the expiration of

tornado watch 42; therefore, this tornado watch effectively will

replace it for the designated counties.  Please see SPC mesoscale

discussion 225 for initial meteorological reasoning.



The tornado watch area is approximately along and 75 statute miles

east and west of a line from 35 miles south southwest of Decatur IL

to 25 miles east northeast of Marseilles IL. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU8).



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 42...WW 43...WW 44...WW

45...WW 46...WW 47...



AVIATION...Tornadoes and 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 26035.



...Edwards

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