Alert archive / Illinois / River Flood Warnings in 2014

River Flood Warning 10, NWS Chicago, IL

February 21, 2014LaSalle County, Illinois

NWS Chicago, IL issued this river flood warning at Feb 21, 2014, 12:01 PM CST for LaSalle County, Illinois. It took effect at Feb 22, 2014, 9:59 AM CST. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued: Feb 21, 2014, 12:01 PM CST (18:01 UTC)
In effect from: Feb 22, 2014, 9:59 AM CST
Expired: Feb 23, 2014, 6:00 AM CST
In force: 20 hr
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: Minor

County LaSalle County, IL

The radar

The Chicago radar (KLOT), 73 km from the middle of the area, began a volume at 18:06 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 Illinois River at Ottawa (OTWI2).

Action stage: 461 ft
Minor stage: 463 ft
Moderate stage: 467 ft
Major stage: 471 ft

This gauge today: stage, forecast and historic crests

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

What forecasters said that day

The local office's own words before this river flood 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 river flood warning went out at Feb 21, 11:45 AM CST, 16 minutes earlier.

Area forecast discussion, Feb 21, 11:45 AM CST, 16 minutes before

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Hazardous weather outlook, Feb 21, 3:29 AM CST, 8 hours 32 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 20, 8:43 PM CST	River Flood Warning	LOT	Cook	36 hr
Feb 20, 8:43 PM CST	River Flood Warning	LOT	Will	29 hr
Feb 20, 10:59 PM CST	Wind Advisory	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	16 hr
Feb 21, 3:34 AM CST	Gale Warning	LOT		23 hr
Feb 21, 5:34 AM CST	River Flood Warning	LOT	Iroquois	64 hr
Feb 21, 7:16 AM CST	River Flood Advisory	LOT	Grundy, Will	41 hr
Feb 21, 12:01 PM CST	River Flood Warning	LOT	Bureau, LaSalle	5 days
Feb 21, 3:57 PM CST	River Flood Advisory	LOT	LaSalle	36 hr

Nearby

River Flood Warnings in Illinois, 2014 Every river flood warning in 2014

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.