Alert archive / Illinois / River Flood Warnings in 2016

River Flood Warning 22, NWS Chicago, IL

August 27, 2016LaSalle County, Illinois

NWS Chicago, IL issued this river flood warning at Aug 27, 2016, 2:11 PM CDT for LaSalle County, Illinois. It took effect at Aug 28, 2016, 10:36 AM CDT. It was in force for 30 hr.

The area

The counties it named.

The facts

Issued: Aug 27, 2016, 2:11 PM CDT (19:11 UTC)
In effect from: Aug 28, 2016, 10:36 AM CDT
Expired: Aug 29, 2016, 5:00 PM CDT
In force: 30 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 19:10 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 Aug 27, 12:47 PM CDT, 1 hour 24 minutes earlier.

Area forecast discussion, Aug 27, 12:47 PM CDT, 1 hour 24 minutes before

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Hazardous weather outlook, Aug 27, 12:00 PM CDT, 2 hours 11 minutes before

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In the hours before

Local storm report, Aug 27, 8:14 AM CDT, 5 hours 57 minutes before

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  <title>Service Notice</title>
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  <main class="wrap">
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      <div class="status" id="status">Temporary Notice</div>
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        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 7:30 AM CDT	Areal Flood Advisory	LOT	Cook, Will	4 hr
Aug 27, 10:12 AM CDT	River Flood Warning	LOT	Kankakee	51 hr
Aug 27, 10:19 AM CDT	River Flood Advisory	LOT	Grundy, Will	3 days
Aug 27, 10:19 AM CDT	River Flood Advisory	LOT	Will	40 hr
Aug 27, 2:11 PM CDT	River Flood Warning	LOT	Bureau, LaSalle, Putnam	6 days
Aug 27, 2:14 PM CDT	River Flood Advisory	LOT	Grundy	3 days

Nearby

River Flood Warnings in Illinois, 2016 Every river flood warning in 2016

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.