Alert archive / Illinois / River Flood Warnings in 2018

River Flood Warning 91, NWS Chicago, IL

June 22, 2018LaSalle County, Illinois

NWS Chicago, IL issued this river flood warning at Jun 22, 2018, 11:22 AM CDT for LaSalle County, Illinois. It took effect at Jun 22, 2018, 7:51 PM CDT. It was in force for 44 hr.

The area

The counties it named.

The facts

Issued: Jun 22, 2018, 11:22 AM CDT (16:22 UTC)
In effect from: Jun 22, 2018, 7:51 PM CDT
Expired: Jun 24, 2018, 3:53 PM CDT
In force: 44 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 16:23 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 Jun 22, 6:46 AM CDT, 4 hours 36 minutes earlier.

Area forecast discussion, Jun 22, 6:46 AM CDT, 4 hours 36 minutes before

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Hazardous weather outlook, Jun 22, 4:25 AM CDT, 6 hours 57 minutes before

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In the hours before

Local storm report, Jun 22, 7:43 AM CDT, 3 hours 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
743 AM CDT FRI JUN 22 2018

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

0715 AM     HEAVY RAIN       1 SSW OAK LAWN          41.70N 87.76W
06/22/2018  M4.13 INCH       COOK               IL   COCORAHS

            2 DAY TOTAL. 24 HOUR TOTAL IS 3.87 INCHES. 0.29 INCHES
            OVERNIGHT.

&&

RC

Local storm report, Jun 22, 8:24 AM CDT, 2 hours 58 minutes before

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Local storm report, Jun 22, 8:27 AM CDT, 2 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
827 AM CDT FRI JUN 22 2018

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

0815 AM     FLOOD            WOODRIDGE               41.74N 88.04W
06/22/2018                   DUPAGE             IL   TRAINED SPOTTER

            MINOR STREET FLOODING ON ROUTE 53 WITH A COUPLE INCHES OF
            STANDING WATER...MAINLY IN THE RIGHT LANES.

&&

RC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 9:30 PM CDT	River Flood Advisory	LOT	Cook	14 hr
Jun 21, 9:30 PM CDT	River Flood Advisory	LOT	Will	13 hr
Jun 21, 9:30 PM CDT	River Flood Advisory	LOT	DuPage	33 hr
Jun 21, 10:05 PM CDT	River Flood Advisory	LOT	Grundy	60 hr
Jun 22, 1:04 AM CDT	Areal Flood Advisory	LOT	Cook, DeKalb, DuPage, Grundy, Kane, Kendall and 3 more	6 hr
Jun 22, 6:41 AM CDT	River Flood Advisory	LOT	Livingston	4 hr
Jun 22, 9:21 AM CDT	Areal Flood Advisory	LOT	Cook, DeKalb, DuPage, Kane	3 hr
Jun 22, 9:21 AM CDT	River Flood Warning	LOT	Livingston	10 hr
Jun 22, 9:30 AM CDT	River Flood Watch	LOT	Lake	11 hr
Jun 22, 10:06 AM CDT	Areal Flood Warning	LOT	Cook, DuPage, Kane	3 hr
Jun 22, 11:15 AM CDT	River Flood Advisory	LOT	Iroquois	72 hr
Jun 22, 12:24 PM CDT	River Flood Advisory	LOT	Boone	3 days
Jun 22, 1:14 PM CDT	Areal Flood Advisory	LOT	Ford, Iroquois	3 hr
Jun 22, 4:07 PM CDT	Areal Flood Advisory	LOT	Ford, Iroquois	3 hr
Jun 21, 9:34 PM CDT	River Flood Advisory	LOT	Porter	13 hr
Jun 21, 9:46 PM CDT	River Flood Warning	LOT	Jasper, Porter	6 days
Jun 22, 3:00 PM CDT	Flash Flood Warning	LOT	Jasper, Newton	4 hr

Nearby

River Flood Warnings in Illinois, 2018 Every river flood warning in 2018

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.