Alert archive / Illinois / River Flood Warnings in 2017

River Flood Warning 130, NWS Chicago, IL

November 19, 2017Iroquois County, Illinois

NWS Chicago, IL issued this river flood warning at Nov 19, 2017, 9:27 AM CST for Iroquois County, Illinois. It took effect at Nov 20, 2017, 1:12 AM CST. It was in force for 57 hr.

The area

The counties it named.

The facts

Issued: Nov 19, 2017, 9:27 AM CST (15:27 UTC)
In effect from: Nov 20, 2017, 1:12 AM CST
Expired: Nov 22, 2017, 10:00 AM CST
In force: 57 hr
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: Minor

County Iroquois County, IL

The radar

The Chicago radar (KLOT), 98 km from the middle of the area, began a volume at 15:25 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 Iroquois River at Iroquois (IRQI2). The gauge peaked at 17.04 ft at Nov 21, 2017, 12:00 AM CST.

Action stage: 17 ft
Minor stage: 18 ft
Moderate stage: 24 ft
Major stage: 25 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05525000, 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 Nov 18, 5:26 PM CST, 16 hours 1 minute earlier.

Area forecast discussion, Nov 18, 5:26 PM CST, 16 hours 1 minute before

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Hazardous weather outlook, Nov 18, 3:14 PM CST, 18 hours 13 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
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        Please try again in a few minutes.
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        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
Nov 18, 9:19 PM CST	Small Craft Advisory	LOT		42 hr
Nov 18, 9:30 PM CST	River Flood Advisory	LOT	Will	21 hr
Nov 19, 9:53 AM CST	River Flood Advisory	LOT	Bureau, LaSalle, Putnam	36 hr
Nov 19, 2:49 PM CST	River Flood Advisory	LOT	LaSalle	4 days
Nov 19, 3:04 PM CST	Gale Watch	LOT		6 hr
Nov 19, 3:04 PM CST	Small Craft Advisory	LOT		28 hr
Nov 19, 9:17 AM CST	River Flood Warning	LOT	Lake, Newton	7 days
Nov 19, 9:44 AM CST	River Flood Advisory	LOT	Newton	3 days

Nearby

River Flood Warnings in Illinois, 2017 Every river flood warning in 2017

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.