Alert archive / Iowa / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 57, NWS Des Moines, IA

May 24, 1989Boone County, Story County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at May 24, 1989, 12:17 AM CDT for Boone County, Story County, Iowa. It was in force for 58 min.

The area

The counties it named.

The facts

Issued: May 24, 1989, 12:17 AM CDT (05:17 UTC)
Expired: May 24, 1989, 1:15 AM CDT
In force: 58 min
Issued by: NWS Des Moines, IA
Area: Whole counties

Counties Boone County, IA, Story County, IA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 5.3 hours before the alert went out and 236 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: 3566 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 256 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, May 23, 8:44 PM CDT, 3 hours 33 minutes before

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Special weather statement, May 23, 9:45 PM CDT, 2 hours 32 minutes before

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Special weather statement, May 23, 10:40 PM CDT, 1 hour 37 minutes before

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Special weather statement, May 23, 11:41 PM CDT, 36 minutes before

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Special weather statement, May 24, 12:12 AM CDT, 5 minutes before

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Special weather statement, May 24, 12:16 AM CDT, 1 minute 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
May 23, 8:34 PM CDT	Severe Thunderstorm Warning	DMX	Dickinson	41 min
May 23, 9:04 PM CDT	Severe Thunderstorm Warning	DMX	Clay	41 min
May 23, 9:30 PM CDT	Severe Thunderstorm Warning	DMX	Buena Vista, Palo Alto, Pocahontas	60 min
May 23, 10:25 PM CDT	Severe Thunderstorm Warning	DMX	Buena Vista, Calhoun, Pocahontas, Sac	80 min
May 23, 11:20 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Crawford	70 min
May 23, 11:29 PM CDT	Severe Thunderstorm Warning	DMX	Webster	46 min
May 23, 11:35 PM CDT	Severe Thunderstorm Warning	DMX	Webster	40 min
May 24, 12:34 AM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Greene, Guthrie	56 min
May 24, 12:37 AM CDT	Severe Thunderstorm Warning	DMX	Crawford, Sac	53 min
May 24, 12:56 AM CDT	Severe Thunderstorm Warning	DMX	Carroll	34 min
May 24, 1:35 AM CDT	Severe Thunderstorm Warning	DMX	Carroll, Greene, Guthrie	40 min
May 24, 1:51 AM CDT	Severe Thunderstorm Warning	DMX	Jasper	39 min
May 24, 2:04 AM CDT	Severe Thunderstorm Warning	DMX	Dallas	26 min
May 24, 2:15 AM CDT	Severe Thunderstorm Warning	DMX	Marion	30 min
May 24, 2:30 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Mahaska, Poweshiek	45 min
May 24, 2:33 AM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison, Polk, Warren	57 min
May 24, 3:01 AM CDT	Severe Thunderstorm Warning	DMX	Keokuk, Wapello	29 min
May 24, 3:19 AM CDT	Tornado Warning	DMX	Lucas, Warren	41 min
May 24, 3:49 AM CDT	Severe Thunderstorm Warning	DMX	Buchanan, Fayette	56 min
May 24, 4:04 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Polk	56 min
May 24, 4:52 AM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Marion	53 min
May 24, 5:25 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Cass	50 min
May 24, 5:49 PM CDT	Tornado Warning	DMX	Adams	26 min
May 24, 6:02 PM CDT	Tornado Warning	DMX	Union	58 min
May 24, 6:10 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton	50 min
May 24, 6:24 PM CDT	Tornado Warning	DMX	Adams	16 min
May 24, 6:32 PM CDT	Tornado Warning	DMX	Hamilton	41 min
May 24, 6:50 PM CDT	Tornado Warning	DMX	Ringgold, Union	55 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1989 Every severe thunderstorm warning in 1989

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.