WWUS20 KWNS 201944
SEL2
SPC WW 201944
ILZ000-LMZ000-210200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 532
NWS Storm Prediction Center Norman OK
245 PM CDT Sat Jul 20 2019

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Northern Illinois
  Lake Michigan

* Effective this Saturday afternoon and evening from 245 PM until
  900 PM CDT.

* Primary threats include...
  Isolated damaging wind gusts to 70 mph possible
  A tornado or two possible

SUMMARY...Bands of strong-to-severe thunderstorms across far
southern Wisconsin may develop east-southeastward into northern
Illinois near a southward-sagging outflow boundary. The air mass
across northern Illinois is very hot and unstable. Thus, any storm
development into/across northern Illinois could pose a damaging wind
risk through the afternoon/early evening.

The severe thunderstorm watch area is approximately along and 25
statute miles north and south of a line from 65 miles west of
Rockford IL to 100 miles east of Rockford IL. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU2).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 529...WW 530...WW 531...

AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 600. Mean storm motion vector
29025.

...Guyer