Alert archive / Iowa / Tornado Warnings in 1992

Tornado Warning 26, NWS Omaha, NE

July 4, 1992Montgomery County, Iowa

NWS Omaha, NE issued this tornado warning at Jul 4, 1992, 8:58 PM CDT for Montgomery County, Iowa. It was in force for 32 min.

The area

The counties it named.

The facts

Issued
Jul 4, 1992, 8:58 PM CDT (01:58 UTC)
Expired
Jul 4, 1992, 9:30 PM CDT
In force
32 min
Issued by
NWS Omaha, NE
Area
Whole counties

County Montgomery County, IA

The nearest sounding before it

Omaha, NE (KOVN), launched 00:00Z, 2.0 hours before the alert went out and 107 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 00:00Z on 1992-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1450 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 1992-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 165 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
1450 J/kg
Mixed-layer CIN
-152 J/kg
Mixed-layer LCL
1090 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
165 m²/s²
0-3 km storm-relative helicity
235 m²/s²
Significant tornado parameter
-0.1
Supercell composite
-1.1

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 Omaha, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 4, 7:25 PM CDTSevere Thunderstorm WarningOAXJohnson, Pawnee50 min
Jul 4, 7:58 PM CDTSevere Thunderstorm WarningOAXOtoe32 min
Jul 5, 5:20 AM CDTSevere Thunderstorm WarningOAXDodge25 min
Jul 4, 7:44 PM CDTSevere Thunderstorm WarningOAXFremont, Page31 min
Jul 4, 10:28 PM CDTSevere Thunderstorm WarningOAXMills, Montgomery, Pottawattamie32 min

Nearby

Tornado Warnings in Iowa, 1992Every tornado warning in 1992Tornadoes 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; the sounding from the Mesonet's radiosonde archive.