Alert archive / Iowa / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 19, NWS Des Moines, IA

April 26, 1989Hancock County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Apr 26, 1989, 1:05 PM CDT for Hancock County, Iowa. It was in force for 40 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 26, 1989, 1:05 PM CDT (18:05 UTC)
Expired: Apr 26, 1989, 1:45 PM CDT
In force: 40 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Hancock County, IA

The radar

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

What was reported inside it

Time	Report	Where	Remark
Apr 26, 1:20 PM CDT	Hail 0.75	Hancock, IA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 6.1 hours before the alert went out and 292 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: 3621 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 179 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, Apr 26, 10:41 AM CDT, 2 hours 24 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
Apr 26, 11:19 AM CDT	Severe Thunderstorm Warning	DMX	Dickinson, Emmet	41 min
Apr 26, 12:06 PM CDT	Severe Thunderstorm Warning	DMX	Emmet, Kossuth	54 min
Apr 26, 12:32 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	28 min
Apr 26, 2:51 PM CDT	Severe Thunderstorm Warning	DMX	Boone	39 min
Apr 26, 2:54 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Buchanan	51 min
Apr 26, 3:15 PM CDT	Tornado Warning	DMX	Boone	30 min
Apr 26, 3:46 PM CDT	Tornado Warning	DMX	Boone, Story	44 min
Apr 26, 4:06 PM CDT	Severe Thunderstorm Warning	DMX	Benton, Linn	39 min
Apr 26, 4:15 PM CDT	Tornado Warning	DMX	Polk	45 min
Apr 26, 4:45 PM CDT	Severe Thunderstorm Warning	DMX	Johnson, Linn	45 min
Apr 26, 4:45 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Guthrie	45 min
Apr 26, 4:54 PM CDT	Tornado Warning	DMX	Jasper, Polk	51 min
Apr 26, 5:20 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion, Polk	55 min
Apr 26, 5:32 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Greene, Guthrie	43 min
Apr 26, 6:10 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Marion	50 min
Apr 26, 6:23 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Guthrie	67 min
Apr 26, 6:53 PM CDT	Severe Thunderstorm Warning	DMX	Jefferson, Wapello	67 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.