Tornado watch #42 just issued for much of northern Illinois including the entire Chicago Metro area valid until 10pm

 URGENT - IMMEDIATE BROADCAST REQUESTED
   Tornado Watch Number 42
   NWS Storm Prediction Center Norman OK
   300 PM CST Tue Feb 28 2017

   The NWS Storm Prediction Center has issued a

   * Tornado Watch for portions of 
     Southeast Iowa
     Northern and Central Illinois
     Northwest Indiana
     Northeast Missouri
     Lake Michigan

   * Effective this Tuesday afternoon and evening from 300 PM until
     1000 PM CST.

   * Primary threats include...
     A few tornadoes possible
     Scattered large hail likely with isolated very large hail events
       to 3 inches in diameter possible
     Scattered damaging wind gusts to 70 mph possible

   SUMMARY...Scattered thunderstorms are expected to form this
   afternoon and early evening across the watch area.  Conditions
   appear favorable for large hail in the stronger cells, along with
   the risk for isolated tornadoes.

   The tornado watch area is approximately along and 120 statute miles
   north and south of a line from 35 miles south of Ottumwa IA to 30
   miles north of Lafayette IN. For a complete depiction of the watch
   see the associated watch outline update (WOUS64 KWNS WOU2).

   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.

   &&


THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 42 IN EFFECT UNTIL 10 PM CST /11 PM EST/ THIS EVENING FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 18 COUNTIES IN CENTRAL ILLINOIS LIVINGSTON IN EAST CENTRAL ILLINOIS FORD IROQUOIS IN NORTH CENTRAL ILLINOIS BOONE DE KALB LA SALLE LEE OGLE WINNEBAGO IN NORTHEAST ILLINOIS COOK DUPAGE GRUNDY KANE KANKAKEE KENDALL LAKE IL MCHENRY WILL IN INDIANA THIS WATCH INCLUDES 5 COUNTIES IN NORTHWEST INDIANA BENTON JASPER LAKE IN NEWTON PORTER THIS INCLUDES THE CITIES OF AURORA, CHICAGO, DEKALB, DIXON, DOUGLAS PARK, FOWLER, GARY, HUMBOLDT PARK, HYDE PARK, JOLIET, KANKAKEE, LAKEVIEW, LINCOLN PARK, LOGAN SQUARE, MOROCCO, MORRIS, OREGON, OSWEGO, OTTAWA, PIPER CITY, PONTIAC, RENSSELAER, VALPARAISO, WATSEKA, AND WHEATON.