Alert archive / Illinois / River Flood Warnings in 2019

River Flood Warning 13, NWS Chicago, IL

February 5, 2019LaSalle County, Illinois

NWS Chicago, IL issued this river flood warning at Feb 5, 2019, 11:53 AM CST for LaSalle County, Illinois. It was in force for 21 days.

The area

The counties it named.

The facts

Issued: Feb 5, 2019, 11:53 AM CST (17:53 UTC)
Expired: Feb 26, 2019, 11:53 AM CST
In force: 21 days
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: Moderate

County LaSalle County, IL

The radar

The Chicago radar (KLOT), 73 km from the middle of the area, began a volume at 17:55 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 5, 5:41 AM CST, 6 hours 12 minutes earlier.

Area forecast discussion, Feb 5, 5:41 AM CST, 6 hours 12 minutes before

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Hazardous weather outlook, Feb 5, 4:04 AM CST, 7 hours 49 minutes before

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In the hours before

Local storm report, Feb 5, 9:14 AM CST, 2 hours 39 minutes before

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Local storm report, Feb 5, 10:46 AM CST, 1 hour 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1046 AM CST TUE FEB 5 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0730 AM     FLOOD            3 WNW GRAND DETOUR      41.91N 89.46W
02/05/2019                   LEE                IL   TRAINED SPOTTER

            RIVER ICE SPOTTER REPORTS FLOODING DUE TO
            ICE JAM ON THE ROCK RIVER. WATER HAS ENTERED
            LOW-LYING PROPERTY BEHIND RESIDENCES.
            BACKWATER FLOODING FROM THE ICE JAM IS ALSO
            INUNDATING AGRICULTURAL AREAS ALONG PINE
            CREEK. WATER IS NOW FLOWING OVER THE ICE.

&&

WSL

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 4, 8:03 PM CST	River Flood Warning	LOT	Winnebago	21 days
Feb 4, 8:08 PM CST	River Flood Warning	LOT	Ogle	5 days
Feb 4, 9:07 PM CST	River Flood Advisory	LOT	Lake	3 days
Feb 5, 3:31 AM CST	Ice Storm Warning	LOT	Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 6 more	23 hr
Feb 5, 9:25 AM CST	River Flood Advisory	LOT	Winnebago	13 hr
Feb 5, 9:29 AM CST	Areal Flood Warning	LOT	LaSalle	3 hr
Feb 5, 11:44 AM CST	River Flood Advisory	LOT	Lake	36 hr

Nearby

River Flood Warnings in Illinois, 2019 Every river flood warning in 2019

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.