Alert archive / Iowa / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 110, NWS Des Moines, IA

June 17, 1994Clay County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 17, 1994, 6:19 PM CDT for Clay County, Iowa. It was in force for 26 min.

The area

The counties it named.

The facts

Issued: Jun 17, 1994, 6:19 PM CDT (23:19 UTC)
Expired: Jun 17, 1994, 6:45 PM CDT
In force: 26 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Clay County, IA

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 11.3 hours before the alert went out and 232 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: 646 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 538 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.6

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, Jun 17, 4:40 PM CDT, 1 hour 39 minutes before

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Special weather statement, Jun 17, 5:07 PM CDT, 1 hour 12 minutes before

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Special weather statement, Jun 17, 5:09 PM CDT, 1 hour 10 minutes before

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Special weather statement, Jun 17, 5:34 PM CDT, 45 minutes before

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Special weather statement, Jun 17, 5:34 PM CDT, 45 minutes before

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Special weather statement, Jun 17, 5:40 PM CDT, 39 minutes before

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      <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 17, 5:59 PM CDT	Severe Thunderstorm Warning	DMX	Dickinson, Emmet	31 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.