Alert archive / Illinois / River Flood Warnings in 2009

River Flood Warning 113, NWS Chicago, IL

October 23, 2009Cook County, Illinois

NWS Chicago, IL issued this river flood warning at Oct 23, 2009, 8:48 AM CDT for Cook County, Illinois. It took effect at Oct 23, 2009, 3:10 PM CDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Oct 23, 2009, 8:48 AM CDT (13:48 UTC)
In effect from: Oct 23, 2009, 3:10 PM CDT
Expired: Oct 24, 2009, 2:53 AM CDT
In force: 12 hr
Issued by: NWS Chicago, IL
Flood severity: Minor

County Cook County, IL

The radar

The Chicago radar (KLOT), 49 km from the middle of the area, began a volume at 13:48 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 river

Written for the forecast point Thorn Creek at Thornton (THNI2). The gauge peaked at 10.28 ft at Oct 23, 2009, 6:00 PM CDT.

Action stage: 7.5 ft
Minor stage: 9 ft
Moderate stage: 14 ft
Major stage: 15.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05536275, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 23, 8:27 AM CDT	Areal Flood Advisory	LOT	Cook, DuPage, Kankakee, Will	6 hr
Oct 23, 10:30 AM CDT	River Flood Advisory	LOT	Boone	11 hr
Oct 23, 10:30 AM CDT	River Flood Advisory	LOT	Winnebago	32 hr
Oct 23, 8:48 AM CDT	River Flood Warning	LOT	Lake	11 hr

Nearby

River Flood Warnings in Illinois, 2009 Every river flood warning in 2009

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; the gauge from the NWS water service and the USGS.