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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
401 PM CDT Sun Aug 19 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
202115-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Lake IN-Porter-Newton-Jasper-Benton-
401 PM CDT Sun Aug 19 2018 /501 PM EDT Sun Aug 19 2018/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk.
  High Swim Risk

DISCUSSION...

 The chance of thunderstorms increases by the predawn hours,
 mainly for areas west of I-39.

 Also, strong onshore winds will produce dangerous swim conditions
 along the Illinois shore, especially starting after midnight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Monday...
  Limited Severe Thunderstorm Risk.
  Elevated Flooding Risk.
  High Swim Risk
Tuesday...
  Limited Thunderstorm Risk.
  Elevated Lakeshore Flood Risk
Wednesday...
  Limited Lakeshore Flood Risk
Friday and Saturday...
  Limited Thunderstorm Risk.

DISCUSSION:

 Dangerous swim conditions will continue through Monday night for
 the Illinois shore. The shore of both Illinois and Indiana will
 see dangerous swim conditions Tuesday and Tuesday night.
 Lakeshore flooding is possible Tuesday especially for the
 Indiana shore.

 There is a chance that some thunderstorms Monday could be strong
 to severe with damaging winds the primary concern. Locally heavy
 rain also is possible.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the east at 5 mph.

$$



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