Alert archive / Iowa / Flash Flood Warnings in 1993

Flash Flood Warning 43, NWS Des Moines, IA

June 30, 1993Decatur County, Iowa

NWS Des Moines, IA issued this flash flood warning at Jun 30, 1993, 7:55 PM CDT for Decatur County, Iowa. It was in force for 65 min.

The area

The counties it named.

The facts

Issued: Jun 30, 1993, 7:55 PM CDT (00:55 UTC)
Expired: Jun 30, 1993, 9:00 PM CDT
In force: 65 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Decatur County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.9 hours before the alert went out and 226 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: 237 J/kg
Mixed-layer CIN: -200 J/kg
Mixed-layer LCL: 620 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.9

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, Jun 30, 4:47 PM CDT, 3 hours 8 minutes before

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Special weather statement, Jun 30, 4:48 PM CDT, 3 hours 7 minutes before

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Special weather statement, Jun 30, 5:56 PM CDT, 1 hour 59 minutes before

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Special weather statement, Jun 30, 5:58 PM CDT, 1 hour 57 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">
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      <p id="message2">
        Please try again in a few minutes.
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Special weather statement, Jun 30, 6:53 PM CDT, 1 hour 2 minutes before

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<body>
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    <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.
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Special weather statement, Jun 30, 6:54 PM CDT, 1 hour 1 minute before

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<body>
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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>
      <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>
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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
Jun 30, 7:55 PM CDT	Severe Thunderstorm Warning	DMX	Decatur	65 min
Jun 30, 10:14 PM CDT	Flash Flood Warning	DMX	Clarke, Decatur, Ringgold, Union	3 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.