Alert archive / Iowa / Tornado Warnings in 1993

Tornado Warning 22, NWS Omaha, NE

August 11, 1993Page County, Iowa

NWS Omaha, NE issued this tornado warning at Aug 11, 1993, 7:36 PM CDT for Page County, Iowa. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
Aug 11, 1993, 7:36 PM CDT (00:36 UTC)
Expired
Aug 11, 1993, 8:15 PM CDT
In force
39 min
Issued by
NWS Omaha, NE
Area
Whole counties

County Page County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.6 hours before the alert went out and 121 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 1993-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 613 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 1993-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 square meters per square second.1939Sfc1 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
613 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
872 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.3
Supercell composite
4.4

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The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

Nearby

Tornado Warnings in Iowa, 1993Every tornado warning in 1993Tornadoes in 1993

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.