Alert archive / Iowa / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 64, NWS Omaha, NE

October 6, 1994Shelby County, Iowa

NWS Omaha, NE issued this severe thunderstorm warning at Oct 6, 1994, 6:45 PM CDT for Shelby County, Iowa. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Oct 6, 1994, 6:45 PM CDT (23:45 UTC)
Expired
Oct 6, 1994, 7:15 PM CDT
In force
30 min
Issued by
NWS Omaha, NE
Area
Whole counties

County Shelby County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.8 hours before the alert went out and 97 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 1994-10-06Temperature 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 1994-10-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 280 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
1032 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
280 m²/s²
0-3 km storm-relative helicity
295 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 Omaha, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 6, 5:17 PM CDTSevere Thunderstorm WarningOAXCass, Sarpy, Saunders28 min
Oct 6, 5:18 PM CDTSevere Thunderstorm WarningOAXLancaster27 min
Oct 6, 5:52 PM CDTSevere Thunderstorm WarningOAXDouglas38 min
Oct 6, 5:46 PM CDTSevere Thunderstorm WarningOAXHarrison29 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1994Every severe thunderstorm warning in 1994

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.