Alert archive / Iowa / Flash Flood Warnings in 1993

Flash Flood Warning 31, NWS Des Moines, IA

June 24, 1993Van Buren County, Iowa

NWS Des Moines, IA issued this flash flood warning at Jun 24, 1993, 10:24 PM CDT for Van Buren County, Iowa. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 24, 1993, 10:24 PM CDT (03:24 UTC)
Expired
Jun 25, 1993, 1:30 AM CDT
In force
3 hr
Issued by
NWS Des Moines, IA
Area
Whole counties

County Van Buren County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 3.4 hours before the alert went out and 376 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-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 1993-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 1993-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1945 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 24, 8:40 PM CDT, 1 hour 44 minutes before
IAZALL-250245-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
840 PM CDT THU JUN 24 1993

AT 830 PM CDT...NUMEROUS SHOWERS AND THUNDERSTORMS WITH HEAVY RAINS
CONTINUED OVER EAST CENTRAL AND SOUTHEAST IOWA.  THE STORMS WERE SOUTH
EAST OF A LINE EXTENDING FROM LAMONI TO JUST NORTH OF DUBUQUE.  THE
HEAVIEST RAINS WERE LOCATED ALONG A LINE ABOUT 15 MILES WIDE AND
EXTENDING FROM CEDAR RAPIDS SOUTHEAST TO JUST EAST OF OTTUMWA.

THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR.

SCOTT
Special weather statement, Jun 24, 8:44 PM CDT, 1 hour 40 minutes before
IAZALL-250245-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
840 PM CDT THU JUN 24 1993

AT 830 PM CDT...NUMEROUS SHOWERS AND THUNDERSTORMS WITH HEAVY RAINS
CONTINUED OVER EAST CENTRAL AND SOUTHEAST IOWA.  THE STORMS WERE SOUTH
EAST OF A LINE EXTENDING FROM LAMONI TO JUST NORTH OF DUBUQUE.  THE
HEAVIEST RAINS WERE LOCATED ALONG A LINE ABOUT 15 MILES WIDE AND
EXTENDING FROM CEDAR RAPIDS SOUTHEAST TO JUST EAST OF OTTUMWA.

THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR.

SCOTT
Special weather statement, Jun 24, 9:40 PM CDT, 44 minutes before
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Special weather statement, Jun 24, 9:54 PM CDT, 30 minutes before
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<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <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.
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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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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 9:08 PM CDTFlash Flood WarningDMXWashington68 min

Nearby

Flash Flood Warnings in Iowa, 1993Every 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.