Alert archive / Iowa / River Flood Warnings in 2013

River Flood Warning 11, NWS Des Moines, IA

May 20, 2013Black Hawk County, Iowa

NWS Des Moines, IA issued this river flood warning at May 20, 2013, 12:31 AM CDT for Black Hawk County, Iowa. It took effect at May 21, 2013, 8:35 AM CDT. It was in force for 5 days.

The area

The counties it named.

The facts

Issued: May 20, 2013, 12:31 AM CDT (05:31 UTC)
In effect from: May 21, 2013, 8:35 AM CDT
Expired: May 26, 2013, 7:00 AM CDT
In force: 5 days
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Flood severity: Moderate

County Black Hawk County, IA

The radar

The Des Moines radar (KDMX), 143 km from the middle of the area, began a volume at 05:32 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 Cedar River at Cedar Falls (CEDI4).

Action stage: 85 ft
Minor stage: 89 ft
Moderate stage: 92 ft
Major stage: 94 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05463050, 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 Des Moines, IA wrote its last area forecast discussion before this river flood warning went out at May 19, 11:46 PM CDT, 45 minutes earlier.

Area forecast discussion, May 19, 11:46 PM CDT, 45 minutes before

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Hazardous weather outlook, May 19, 10:50 PM CDT, 1 hour 41 minutes before

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In the hours before

Local storm report, May 19, 10:37 PM CDT, 1 hour 54 minutes before

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Special weather statement, May 19, 10:37 PM CDT, 1 hour 54 minutes before

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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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Local storm report, May 19, 10:38 PM CDT, 1 hour 53 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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      </p>
      <p id="message2">
        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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Local storm report, May 19, 10:40 PM CDT, 1 hour 51 minutes before

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      </p>
      <p id="message2">
        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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Local storm report, May 19, 10:42 PM CDT, 1 hour 49 minutes before

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<body>
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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <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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Local storm report, May 19, 11:49 PM CDT, 42 minutes before

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      <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>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <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 Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 19, 7:08 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Story	52 min
May 19, 7:14 PM CDT	Tornado Warning Tornado observed	DMX	Jasper, Marshall, Polk, Story	46 min
May 19, 7:16 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Polk, Warren	29 min
May 19, 7:53 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Story	52 min
May 19, 7:55 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion, Polk, Warren	35 min
May 19, 8:20 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler, Grundy, Tama	40 min
May 19, 8:31 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Tama	44 min
May 19, 8:37 PM CDT	Tornado Warning	DMX	Appanoose, Wayne	23 min
May 19, 9:07 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer	23 min
May 19, 9:11 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Tama	49 min
May 19, 9:27 PM CDT	Severe Thunderstorm Warning	DMX	Davis	33 min
May 19, 9:39 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Poweshiek, Wapello	51 min
May 19, 10:01 PM CDT	Flash Flood Warning	DMX	Jasper, Poweshiek	6 hr
May 20, 12:31 AM CDT	River Flood Warning	DMX	Black Hawk	5 days
May 20, 10:47 AM CDT	River Flood Warning	DMX	Black Hawk, Bremer, Butler	4 days
May 20, 10:47 AM CDT	River Flood Warning	DMX	Black Hawk, Bremer, Butler	55 hr
May 20, 6:42 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Madison, Union	33 min
May 20, 6:54 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison, Polk	36 min

Nearby

River Flood Warnings in Iowa, 2013 Every river flood warning in 2013

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.