Alert archive / Iowa / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 154, NWS Des Moines, IA

July 10, 1993Mitchell County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jul 10, 1993, 7:25 PM CDT for Mitchell County, Iowa. It was in force for 37 min.

The area

The counties it named.

The facts

Issued: Jul 10, 1993, 7:25 PM CDT (00:25 UTC)
Expired: Jul 10, 1993, 8:02 PM CDT
In force: 37 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Mitchell County, IA

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 0.4 hours before the alert went out and 178 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: 214 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 1366 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 89 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 severe thunderstorm 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 10, 6:40 PM CDT, 45 minutes before

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Special weather statement, Jul 10, 6:42 PM CDT, 43 minutes before

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Local storm report, Jul 10, 7:00 PM CDT, 25 minutes before

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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.
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      <p id="message2">
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Local storm report, Jul 10, 7:00 PM CDT, 25 minutes before

<!doctype html>
<html lang="en">
<head>
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  <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.
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Special weather statement, Jul 10, 7:10 PM CDT, 15 minutes before

IAZALL-110300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
710 PM CDT SAT JUL 10 1993

...TRAVEL IS NOT RECOMMENDED IN CENTRAL IOWA UNTIL FURTHER NOTICE...

THE IOWA DEPARTMENT OF PUBLIC SAFETY IS DISCOURAGING AND NOT
RECOMMENDING TRAVEL ANYWHERE IN CENRAL IOWA THIS EVENING OR TONIGHT.
SIGNIFICANT TRAVEL PROBLEMS WILL PLAGUE ANYONE ATTEMPING TO DRIVE IOWA
HIGHWAYS IN CENTRAL IOWA...INCLUDING I80 AND I35 IN AND AROUND DES
MOINES.

SO MANY ROAD CLOSING HAVE OCCURRED DUE TO WATER ACROSS ROADS FROM RIVERS
OUT OF THEIR BANKS...THAT THERE IS NO PLACE TO DETOUR DRIVERS.  PLEASE
CONSIDER DELAYING YOUR TRAVEL PLANS UNTIL LATER.

BURKE

Special weather statement, Jul 10, 7:11 PM CDT, 14 minutes before

IAZALL-110300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
710 PM CDT SAT JUL 10 1993

...TRAVEL IS NOT RECOMMENDED IN CENTRAL IOWA UNTIL FURTHER NOTICE...

THE IOWA DEPARTMENT OF PUBLIC SAFETY IS DISCOURAGING AND NOT
RECOMMENDING TRAVEL ANYWHERE IN CENRAL IOWA THIS EVENING OR TONIGHT.
SIGNIFICANT TRAVEL PROBLEMS WILL PLAGUE ANYONE ATTEMPING TO DRIVE IOWA
HIGHWAYS IN CENTRAL IOWA...INCLUDING I80 AND I35 IN AND AROUND DES
MOINES.

SO MANY ROAD CLOSING HAVE OCCURRED DUE TO WATER ACROSS ROADS FROM RIVERS
OUT OF THEIR BANKS...THAT THERE IS NO PLACE TO DETOUR DRIVERS.  PLEASE
CONSIDER DELAYING YOUR TRAVEL PLANS UNTIL LATER.

BURKE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 8:39 PM CDT	Flash Flood Warning	DMX	Appanoose	2 hr
Jul 10, 8:39 PM CDT	Flash Flood Warning	DMX	Wayne	102 min
Jul 10, 11:05 PM CDT	Severe Thunderstorm Warning	DMX	Lucas	19 min
Jul 10, 11:36 PM CDT	Flash Flood Warning	DMX	Dickinson, Emmet	3 hr
Jul 10, 11:56 PM CDT	Flash Flood Warning	DMX	Clay, Palo Alto	3 hr
Jul 11, 6:10 AM CDT	Flash Flood Warning	DMX	Polk	4 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 1993 Every severe thunderstorm 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.