Alert archive / Illinois / River Flood Watches in 2009

River Flood Watch 21, NWS Chicago, IL

May 13, 2009Winnebago County, Illinois

NWS Chicago, IL issued this river flood watch at May 13, 2009, 9:33 AM CDT for Winnebago County, Illinois. It took effect at May 15, 2009, 2:30 PM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: May 13, 2009, 9:33 AM CDT (14:33 UTC)
In effect from: May 15, 2009, 2:30 PM CDT
Expired: May 13, 2009, 8:12 PM CDT
In force
Issued by: NWS Chicago, IL
Flood severity: None

County Winnebago County, IL

The radar

The Milwaukee radar (KMKX), 86 km from the middle of the area, began a volume at 14:36 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 Pecatonica River near Shirland (SIRI2). The gauge peaked at 9.85 ft at May 14, 2009, 8:00 PM CDT.

Action stage: 11 ft
Minor stage: 12 ft
Moderate stage: 14 ft
Major stage: 15.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05437050, 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 watch 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 watch went out at May 13, 7:02 AM CDT, 2 hours 31 minutes earlier.

Area forecast discussion, May 13, 7:02 AM CDT, 2 hours 31 minutes before

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Hazardous weather outlook, May 13, 9:18 AM CDT, 15 minutes before

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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <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
May 13, 5:39 AM CDT	River Flood Warning	LOT	Bureau, LaSalle	18 days
May 13, 9:16 AM CDT	River Flood Warning	LOT	Kane, Kendall	24 hr
May 13, 9:16 AM CDT	River Flood Warning	LOT	LaSalle	12 hr
May 13, 9:33 AM CDT	River Flood Watch	LOT	Winnebago	11 hr
May 13, 11:13 AM CDT	River Flood Warning	LOT	LaSalle	5 days
May 13, 11:21 AM CDT	River Flood Advisory	LOT	Grundy	48 hr
May 13, 4:08 PM CDT	River Flood Watch	LOT	LaSalle	5 hr
May 13, 5:54 PM CDT	Severe Thunderstorm Warning	LOT	Grundy, LaSalle, Livingston	34 min
May 13, 6:26 PM CDT	Severe Thunderstorm Warning	LOT	DeKalb, LaSalle, Lee, Ogle	28 min
May 13, 4:08 PM CDT	River Flood Watch	LOT	Lake, Newton	5 hr

Nearby

River Flood Watches in Illinois, 2009 Every river flood watch in 2009

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.