Alert archive / Iowa / Flash Flood Warnings in 1993

Flash Flood Warning 61, NWS Des Moines, IA

July 9, 1993Black Hawk County, Iowa

NWS Des Moines, IA issued this flash flood warning at Jul 9, 1993, 1:01 AM CDT for Black Hawk County, Iowa. It was in force for 119 min.

The area

The counties it named.

The facts

Issued: Jul 9, 1993, 1:01 AM CDT (06:01 UTC)
Expired: Jul 9, 1993, 3:00 AM CDT
In force: 119 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Black Hawk County, IA

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 6.0 hours before the alert went out and 284 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 71 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 1318 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 8, 11:40 PM CDT, 1 hour 21 minutes before

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Special weather statement, Jul 9, 12:33 AM CDT, 28 minutes before

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Special weather statement, Jul 9, 12:33 AM CDT, 28 minutes before

<!doctype html>
<html lang="en">
<head>
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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>
      <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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Special weather statement, Jul 9, 12:39 AM CDT, 22 minutes before

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<head>
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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>
      <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.
      </p>
    </section>
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</body>
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Special weather statement, Jul 9, 12:40 AM CDT, 21 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<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>
      <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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Jul 9, 12:46 AM CDT, 15 minutes before

<!doctype html>
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<head>
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  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<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>
      <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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 8, 7:12 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	43 min
Jul 8, 7:12 PM CDT	Severe Thunderstorm Warning	DMX	Carroll	48 min
Jul 8, 8:05 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Greene, Guthrie	55 min
Jul 8, 8:27 PM CDT	Flash Flood Warning	DMX	Carroll, Crawford, Greene	4 hr
Jul 8, 8:57 PM CDT	Tornado Warning	DMX	Carroll, Crawford	19 min
Jul 8, 9:09 PM CDT	Tornado Warning	DMX	Boone	36 min
Jul 8, 9:29 PM CDT	Flash Flood Warning	DMX	Boone, Story	4 hr
Jul 8, 9:29 PM CDT	Flash Flood Warning	DMX	Dallas, Guthrie	4 hr
Jul 8, 9:31 PM CDT	Tornado Warning	DMX	Chickasaw	29 min
Jul 8, 9:52 PM CDT	Tornado Warning	DMX	Boone, Dallas	38 min
Jul 8, 10:03 PM CDT	Tornado Warning	DMX	Dallas, Polk	27 min
Jul 8, 10:47 PM CDT	Flash Flood Warning	DMX	Black Hawk	3 hr
Jul 8, 10:52 PM CDT	Severe Thunderstorm Warning	DMX	Buchanan	20 min
Jul 8, 11:25 PM CDT	Flash Flood Warning	DMX	Jasper, Polk	5 hr
Jul 8, 11:25 PM CDT	Flash Flood Warning	DMX	Marshall	5 hr
Jul 8, 11:40 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Crawford	35 min
Jul 8, 11:40 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Cass, Taylor	35 min
Jul 8, 11:49 PM CDT	Flash Flood Warning	DMX	Buchanan	3 hr
Jul 9, 12:02 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Ringgold, Union	28 min
Jul 9, 12:02 AM CDT	Severe Thunderstorm Warning	DMX	Greene, Guthrie	28 min
Jul 9, 12:22 AM CDT	Flash Flood Warning	DMX	Carroll, Greene	4 hr
Jul 9, 12:22 AM CDT	Flash Flood Warning	DMX	Audubon	4 hr
Jul 9, 12:33 AM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison, Polk, Warren	27 min
Jul 9, 12:33 AM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur	27 min
Jul 9, 1:05 AM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Lucas, Wayne	25 min
Jul 9, 1:05 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion, Polk	25 min
Jul 9, 1:05 AM CDT	Severe Thunderstorm Warning	DMX	Warren	25 min
Jul 9, 1:22 AM CDT	Severe Thunderstorm Warning	DMX	Black Hawk	23 min
Jul 9, 1:36 AM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Poweshiek	54 min
Jul 9, 1:36 AM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis, Monroe, Wapello	54 min
Jul 9, 1:36 AM CDT	Severe Thunderstorm Warning	DMX	Jasper	49 min
Jul 9, 2:11 AM CDT	Severe Thunderstorm Warning	DMX	Jefferson, Keokuk, Van Buren, Washington	49 min
Jul 9, 2:11 AM CDT	Severe Thunderstorm Warning	DMX	Iowa, Johnson	49 min
Jul 9, 10:21 AM CDT	Flash Flood Warning	DMX	Story	6 hr

Nearby

Flash Flood Warnings in Iowa, 1993 Every flash flood warning in 1993

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.