Alert archive / Iowa / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 201, NWS Des Moines, IA

October 6, 1994Hamilton County, Wright County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Oct 6, 1994, 10:24 PM CDT for Hamilton County, Wright County, Iowa. It was in force for 81 min.

The area

The counties it named.

The facts

Issued: Oct 6, 1994, 10:24 PM CDT (03:24 UTC)
Expired: Oct 6, 1994, 11:45 PM CDT
In force: 81 min
Issued by: NWS Des Moines, IA
Area: Whole counties

Counties Hamilton County, IA, Wright County, IA

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 3.4 hours before the alert went out and 255 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: 77 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 799 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 498 m²/s²
0-3 km storm-relative helicity: 522 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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, Oct 6, 9:11 PM CDT, 1 hour 13 minutes before

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Special weather statement, Oct 6, 9:13 PM CDT, 1 hour 11 minutes before

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Special weather statement, Oct 6, 9:25 PM CDT, 59 minutes before

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Special weather statement, Oct 6, 9:39 PM CDT, 45 minutes before

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Special weather statement, Oct 6, 9:40 PM CDT, 44 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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Special weather statement, Oct 6, 9:55 PM CDT, 29 minutes before

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      <p id="message2">
        Please try again in a few minutes.
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        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.

Issued	Product	Office	Counties	Lasted
Oct 6, 7:28 PM CDT	Tornado Warning	DMX	Carroll	32 min
Oct 6, 7:41 PM CDT	Severe Thunderstorm Warning	DMX	Sac	14 min
Oct 6, 7:55 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun	35 min
Oct 6, 9:42 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton	33 min
Oct 6, 9:42 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison	33 min
Oct 6, 9:52 PM CDT	Severe Thunderstorm Warning	DMX	Wright	38 min
Oct 6, 9:59 PM CDT	Severe Thunderstorm Warning	DMX	Hancock	31 min
Oct 6, 10:09 PM CDT	Severe Thunderstorm Warning	DMX	Winnebago	33 min
Oct 6, 10:09 PM CDT	Severe Thunderstorm Warning	DMX	Worth	51 min
Oct 6, 10:12 PM CDT	Severe Thunderstorm Warning	DMX	Story	33 min
Oct 6, 10:35 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo	25 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1994 Every severe thunderstorm warning in 1994

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.