Alert archive / Iowa / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 40, NWS Des Moines, IA

June 23, 1992Howard County, Winneshiek County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 23, 1992, 2:51 PM CDT for Howard County, Winneshiek County, Iowa. It was in force for 54 min. 2 reports 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
Jun 23, 1992, 2:51 PM CDT (19:51 UTC)
Expired
Jun 23, 1992, 3:45 PM CDT
In force
54 min
Issued by
NWS Des Moines, IA
Area
Whole counties

Counties Howard County, IA, Winneshiek County, IA

What was reported inside it

TimeReportWhereRemark
Jun 23, 3:11 PM CDTHail 0.75Howard, IA
Jun 23, 3:33 PM CDTHail 0.75Winneshiek, 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 (KOVN), launched 12:00Z, 7.9 hours before the alert went out and 417 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-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 1992-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 1992-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2221 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
74 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.

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 23, 3:46 PM CDTSevere Thunderstorm WarningDMXFayette59 min
Jun 23, 4:02 PM CDTTornado WarningDMXFayette58 min
Jun 23, 4:29 PM CDTSevere Thunderstorm WarningDMXFayette31 min
Jun 23, 4:55 PM CDTSevere Thunderstorm WarningDMXBuchanan35 min
Jun 23, 5:17 PM CDTSevere Thunderstorm WarningDMXHardin28 min
Jun 23, 5:40 PM CDTTornado WarningDMXHamilton, Hardin20 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1992Every severe thunderstorm warning in 1992

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.