Alert archive / Illinois / Tornado Warnings in 2010

Tornado Warning 27, NWS Chicago, IL

July 22, 2010Lake County, Illinois

NWS Chicago, IL issued this tornado warning at Jul 22, 2010, 10:56 PM CDT for Lake County, Illinois. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 22, 2010, 10:56 PM CDT (03:56 UTC)
Expired: Jul 22, 2010, 11:30 PM CDT
In force: 34 min
Issued by: NWS Chicago, IL
Area: Storm-based polygon

County Lake County, IL

The radar

The Chicago radar (KLOT), 85 km from the middle of the area, began a volume at 03:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 22, 8:53 PM CDT	Tornado Watch	SPC	5 hr

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this tornado warning went out at Jul 22, 6:21 PM CDT, 4 hours 35 minutes earlier.

Area forecast discussion, Jul 22, 6:21 PM CDT, 4 hours 35 minutes before

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Hazardous weather outlook, Jul 22, 4:08 PM CDT, 6 hours 48 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 22, 9:21 PM CDT	Severe Thunderstorm Warning	LOT	Winnebago	54 min
Jul 22, 9:40 PM CDT	Special Marine Warning	LOT		95 min
Jul 22, 9:48 PM CDT	Severe Thunderstorm Warning	LOT	Boone, McHenry, Winnebago	57 min
Jul 22, 10:21 PM CDT	Tornado Warning	LOT	Lake, McHenry	39 min
Jul 22, 10:30 PM CDT	Special Marine Warning	LOT		2 hr
Jul 22, 11:10 PM CDT	Areal Flood Advisory	LOT	Boone, Lake, McHenry, Winnebago	8 hr
Jul 22, 11:47 PM CDT	Severe Thunderstorm Warning	LOT	Boone, DeKalb, Ogle, Winnebago	30 min
Jul 23, 12:22 AM CDT	Special Marine Warning	LOT		89 min
Jul 23, 1:56 AM CDT	Areal Flood Advisory	LOT	DeKalb, Kane, Ogle	5 hr
Jul 23, 4:17 AM CDT	Flash Flood Warning	LOT	Boone, DeKalb, Ogle, Winnebago	6 hr
Jul 23, 4:35 AM CDT	Flash Flood Watch	LOT	Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 6 more	31 hr
Jul 23, 9:30 AM CDT	River Flood Advisory	LOT	Kane, McHenry	13 hr
Jul 23, 9:57 AM CDT	Small Craft Advisory	LOT		9 hr
Jul 23, 10:00 AM CDT	River Flood Advisory	LOT	Kane, Kendall	12 hr
Jul 23, 10:00 AM CDT	River Flood Advisory	LOT	Winnebago	12 hr
Jul 23, 10:00 AM CDT	River Flood Advisory	LOT	Winnebago	12 hr
Jul 23, 10:00 AM CDT	River Flood Advisory	LOT	Ogle	12 hr
Jul 23, 10:00 AM CDT	River Flood Advisory	LOT	Lake	12 hr
Jul 23, 10:00 AM CDT	River Flood Advisory	LOT	Winnebago	12 hr
Jul 23, 10:06 AM CDT	Areal Flood Advisory	LOT	Boone, DeKalb, Ogle, Winnebago	6 hr
Jul 23, 4:28 PM CDT	Special Weather Statement	LOT	LaSalle	62 min
Jul 23, 4:57 PM CDT	Severe Thunderstorm Warning	LOT	Grundy, LaSalle, Livingston	48 min
Jul 23, 5:28 PM CDT	Special Weather Statement	LOT	DeKalb, Kane, Kendall	32 min
Jul 23, 5:39 PM CDT	Severe Thunderstorm Warning	LOT	DeKalb, DuPage, Grundy, Kane, Kendall, LaSalle and 1 more	55 min
Jul 23, 5:45 PM CDT	Special Weather Statement	LOT	Cook, DuPage, Kane	60 min
Jul 23, 5:51 PM CDT	Severe Thunderstorm Warning	LOT	Ford, Grundy, Iroquois, Kankakee, Livingston, Will	54 min
Jul 23, 6:04 PM CDT	Areal Flood Advisory	LOT	Cook, DeKalb, DuPage, Grundy, Kane, Kendall and 2 more	3 hr
Jul 23, 6:06 PM CDT	Special Marine Warning	LOT		84 min
Jul 23, 6:13 PM CDT	Severe Thunderstorm Warning	LOT	Cook, DuPage, Kankakee, Will	45 min
Jul 23, 6:18 PM CDT	Severe Thunderstorm Warning	LOT	Ford, Iroquois, Kankakee, Livingston	57 min
Jul 23, 6:44 PM CDT	Special Weather Statement	LOT	Cook, Lake	61 min
Jul 23, 6:53 PM CDT	Severe Thunderstorm Warning	LOT	Jasper, Lake, Newton, Porter	51 min

Nearby

Tornado Warnings in Illinois, 2010 Every tornado warning in 2010 Tornadoes in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.