Alert archive / Iowa / Severe Thunderstorm Warnings in 1988

Severe Thunderstorm Warning 16, NWS Des Moines, IA

May 8, 1988Humboldt County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at May 8, 1988, 4:38 AM CDT for Humboldt County, Iowa. It was in force for 37 min.

The area

The counties it named.

The facts

Issued: May 8, 1988, 4:38 AM CDT (09:38 UTC)
Expired: May 8, 1988, 5:15 AM CDT
In force: 37 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Humboldt 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

Minneapolis, MN (KSTC), launched 00:00Z, 9.6 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: 910 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 1889 m above ground
0-6 km bulk shear: 80 kt
0-1 km storm-relative helicity: 236 m²/s²
0-3 km storm-relative helicity: 232 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 12.2

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 8, 2:49 AM CDT, 1 hour 49 minutes before

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Special weather statement, May 8, 2:51 AM CDT, 1 hour 47 minutes before

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Special weather statement, May 8, 2:55 AM CDT, 1 hour 43 minutes before

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Special weather statement, May 8, 3:49 AM CDT, 49 minutes before

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Special weather statement, May 8, 3:52 AM CDT, 46 minutes before

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Special weather statement, May 8, 4:00 AM 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
May 7, 7:45 PM CDT	Severe Thunderstorm Warning	DMX	Crawford, Sac	30 min
May 7, 8:20 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Sac	25 min
May 7, 8:35 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	40 min
May 7, 8:50 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Pocahontas	40 min
May 7, 9:05 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt	35 min
May 7, 9:30 PM CDT	Severe Thunderstorm Warning	DMX	Emmet	20 min
May 7, 9:31 PM CDT	Severe Thunderstorm Warning	DMX	Crawford, Sac	44 min
May 8, 12:02 AM CDT	Severe Thunderstorm Warning	DMX	Crawford	43 min
May 8, 9:42 AM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Taylor	33 min
May 8, 10:26 AM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Taylor	34 min
May 8, 11:08 AM CDT	Severe Thunderstorm Warning	DMX	Madison	52 min
May 8, 11:20 AM CDT	Severe Thunderstorm Warning	DMX	Clarke, Warren	70 min
May 8, 11:41 AM CDT	Severe Thunderstorm Warning	DMX	Polk	49 min
May 8, 11:44 AM CDT	Severe Thunderstorm Warning	DMX	Franklin	61 min
May 8, 12:01 PM CDT	Tornado Warning	DMX	Jasper	29 min
May 8, 12:15 PM CDT	Tornado Warning	DMX	Jasper	45 min
May 8, 12:25 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo	65 min
May 8, 12:34 PM CDT	Severe Thunderstorm Warning	DMX	Marshall	41 min
May 8, 12:43 PM CDT	Severe Thunderstorm Warning	DMX	Clarke	32 min
May 8, 12:55 PM CDT	Severe Thunderstorm Warning	DMX	Tama	50 min
May 8, 12:58 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Marion, Warren	47 min
May 8, 1:24 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk	36 min
May 8, 1:25 PM CDT	Severe Thunderstorm Warning	DMX	Marion	35 min
May 8, 1:33 PM CDT	Tornado Warning	DMX	Poweshiek	27 min
May 8, 1:40 PM CDT	Severe Thunderstorm Warning	DMX	Bremer	50 min
May 8, 2:01 PM CDT	Tornado Warning	DMX	Iowa, Poweshiek	29 min
May 8, 2:11 PM CDT	Tornado Warning	DMX	Keokuk, Mahaska	49 min
May 8, 2:23 PM CDT	Severe Thunderstorm Warning	DMX	Buchanan, Fayette	42 min
May 8, 2:35 PM CDT	Tornado Warning	DMX	Iowa	30 min
May 8, 2:35 PM CDT	Tornado Warning	DMX	Johnson	40 min
May 8, 3:00 PM CDT	Tornado Warning	DMX	Washington	30 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1988 Every severe thunderstorm warning in 1988

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.