Alert archive / Iowa / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 92, NWS Des Moines, IA

June 29, 1993Clay County, Dickinson County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 29, 1993, 3:24 PM CDT for Clay County, Dickinson County, Iowa. It was in force for 28 min.

The area

The counties it named.

The facts

Issued: Jun 29, 1993, 3:24 PM CDT (20:24 UTC)
Expired: Jun 29, 1993, 3:52 PM CDT
In force: 28 min
Issued by: NWS Des Moines, IA
Area: Whole counties

Counties Clay County, IA, Dickinson County, IA

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 8.4 hours before the alert went out and 219 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 938 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 109 m²/s²
0-3 km storm-relative helicity: 211 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 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 29, 11:55 AM CDT, 3 hours 29 minutes before

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Special weather statement, Jun 29, 12:01 PM CDT, 3 hours 23 minutes before

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Special weather statement, Jun 29, 1:44 PM CDT, 1 hour 40 minutes before

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Special weather statement, Jun 29, 1:44 PM CDT, 1 hour 40 minutes before

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Special weather statement, Jun 29, 2:45 PM CDT, 39 minutes before

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Special weather statement, Jun 29, 2:46 PM CDT, 38 minutes before

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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 29, 4:11 PM CDT	Flash Flood Warning	DMX	Dickinson	3 hr
Jun 29, 4:30 PM CDT	Severe Thunderstorm Warning	DMX	Dickinson	30 min
Jun 29, 5:01 PM CDT	Severe Thunderstorm Warning	DMX	Emmet	39 min
Jun 29, 5:05 PM CDT	Flash Flood Warning	DMX	Emmet	3 hr
Jun 29, 5:43 PM CDT	Flash Flood Warning	DMX	Kossuth, Palo Alto	62 min
Jun 29, 5:43 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth, Palo Alto	62 min
Jun 29, 5:46 PM CDT	Flash Flood Warning	DMX	Clay, Dickinson	59 min
Jun 29, 5:46 PM CDT	Severe Thunderstorm Warning	DMX	Clay, Dickinson	59 min
Jun 29, 5:58 PM CDT	Tornado Warning	DMX	Kossuth	32 min
Jun 29, 6:04 PM CDT	Severe Thunderstorm Warning	DMX	Palo Alto	26 min
Jun 29, 6:10 PM CDT	Severe Thunderstorm Warning	DMX	Hancock	50 min
Jun 29, 6:30 PM CDT	Severe Thunderstorm Warning	DMX	Pocahontas	30 min
Jun 29, 6:42 PM CDT	Flash Flood Warning	DMX	Kossuth	3 hr
Jun 29, 6:55 PM CDT	Flash Flood Warning	DMX	Buena Vista	2 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.