Alert archive / Iowa / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 60, NWS Des Moines, IA

June 5, 1999Kossuth County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 5, 1999, 8:24 PM CDT for Kossuth County, Iowa. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 5, 1999, 8:24 PM CDT (01:24 UTC)
Expired: Jun 5, 1999, 9:00 PM CDT
In force: 36 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Kossuth County, IA

The radar

The Des Moines radar (KDMX), 169 km from the middle of the area, began a volume at 01:25 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 5, 4:15 PM CDT	Tornado Watch	SPC	7 hr
Jun 5, 5:15 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.4 hours before the alert went out and 189 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: 1578 J/kg
Mixed-layer CIN: -164 J/kg
Mixed-layer LCL: 1452 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 304 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.3

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.

NWS Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 5, 2:24 PM CDT, 6 hours earlier.

Area forecast discussion, Jun 5, 2:24 PM CDT, 6 hours before

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In the hours before

Special weather statement, Jun 5, 3:06 PM CDT, 5 hours 18 minutes before

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Special weather statement, Jun 5, 3:06 PM CDT, 5 hours 18 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">
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      <p id="message2">
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Local storm report, Jun 5, 8:13 PM CDT, 11 minutes before

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Local storm report, Jun 5, 8:13 PM CDT, 11 minutes before

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<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.
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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 5, 7:08 PM CDT	Severe Thunderstorm Warning	DMX	Palo Alto	32 min
Jun 6, 2:32 PM CDT	Severe Thunderstorm Warning	DMX	Audubon	33 min
Jun 6, 3:09 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Kossuth	36 min
Jun 6, 3:19 PM CDT	Severe Thunderstorm Warning	DMX	Greene, Webster	31 min
Jun 6, 3:36 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	34 min
Jun 6, 3:39 PM CDT	Tornado Warning	DMX	Webster	36 min
Jun 6, 3:58 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Wright	32 min
Jun 6, 3:58 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton	32 min
Jun 6, 4:13 PM CDT	Tornado Warning	DMX	Wright	32 min
Jun 6, 4:30 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin	30 min
Jun 6, 4:33 PM CDT	Tornado Warning	DMX	Franklin	32 min
Jun 6, 5:45 PM CDT	Severe Thunderstorm Warning	DMX	Audubon	35 min
Jun 6, 5:52 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun	33 min
Jun 6, 6:16 PM CDT	Severe Thunderstorm Warning	DMX	Greene	34 min
Jun 6, 6:29 PM CDT	Tornado Warning	DMX	Adair, Cass	31 min
Jun 6, 6:36 PM CDT	Tornado Warning	DMX	Boone, Greene, Webster	49 min
Jun 6, 6:42 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Wright	33 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1999 Every severe thunderstorm warning in 1999

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; radar from the NEXRAD Level II archive.