Weather Alert WatchOfficial-source alert index
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Ended official alertUpdated

Severe Thunderstorm Warning for Grundy, IL; Kane, IL; Kendall, IL

This alert has ended.Kept for recent context. Do not use it as a current warning.

Official alert fields

What you need to know

Applies to
Grundy, Kane, Kendall
Effective
Ended
Official severity
Severe
Official urgency
Immediate
Official certainty
Observed

What is happening

At 940 AM CDT, a line of severe thunderstorms extended from Aurora to Morris, and was moving east at 45 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Aurora, Joliet, Plainfield, St. Charles, Oswego, West Chicago, Batavia,...

What the bulletin says to do

A tornado watch remains in effect for the warned area. Tornadoes can develop quickly from severe thunderstorms. Although a tornado is not immediately likely, if one is spotted act quickly and move to a place of safety inside a sturdy structure, such as a basement or small interior room. For your protection move to an interior room on the lowest floor of a building.

Read official NWS bulletin

Full official description

Bulletin details

At 940 AM CDT, a line of severe thunderstorms extended from Aurora to Morris, and was moving east at 45 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Aurora, Joliet, Plainfield, St. Charles, Oswego, West Chicago, Batavia, Geneva, Yorkville, Morris, Channahon, Minooka, Coal City, Montgomery, North Aurora, Sugar Grove, Boulder Hill, Elburn, Diamond, Mazon, Braceville, Godley, Carbon Hill, Plattville, and Bristol.

Lifecycle record

Official revisions

4 captured
  1. Update

    Severe Thunderstorm Warning issued August 12 at 9:41AM CDT until August 12 at 10:00AM CDT by NWS Chicago IL

    Official revision
  2. Update

    Severe Thunderstorm Warning issued August 12 at 9:27AM CDT until August 12 at 10:00AM CDT by NWS Chicago IL

    Official revision
  3. Update

    Severe Thunderstorm Warning issued August 12 at 9:16AM CDT until August 12 at 10:00AM CDT by NWS Chicago IL

    Official revision
  4. Alert

    Severe Thunderstorm Warning issued August 12 at 9:03AM CDT until August 12 at 10:00AM CDT by NWS Chicago IL

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Chicago IL. This page reorganizes official fields and does not add a forecast or expand the affected area.

CAP status
Actual
Message type
Update
Last collected
Methodology and corrections