Alert archive / Iowa / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 28, NWS Des Moines, IA

April 25, 1994Ringgold County, Union County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Apr 25, 1994, 8:23 PM CDT for Ringgold County, Union County, Iowa. It was in force for 37 min.

The area

The counties it named.

The facts

Issued
Apr 25, 1994, 8:23 PM CDT (01:23 UTC)
Expired
Apr 25, 1994, 9:00 PM CDT
In force
37 min
Issued by
NWS Des Moines, IA
Area
Whole counties

Counties Ringgold County, IA, Union County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.4 hours before the alert went out and 185 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 1994-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1991 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 1994-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.193958Sfc1 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
1991 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1121 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.0

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
Apr 25, 7:56 PM CDTSevere Thunderstorm WarningDMXTaylor34 min
Apr 25, 8:03 PM CDTSevere Thunderstorm WarningDMXAdams27 min
Apr 25, 8:13 PM CDTSevere Thunderstorm WarningDMXCass32 min
Apr 25, 8:33 PM CDTSevere Thunderstorm WarningDMXMadison27 min
Apr 25, 8:50 PM CDTSevere Thunderstorm WarningDMXAdair25 min
Apr 25, 8:54 PM CDTSevere Thunderstorm WarningDMXMadison36 min
Apr 25, 9:07 PM CDTSevere Thunderstorm WarningDMXClarke, Dallas, Polk, Warren38 min
Apr 25, 9:27 PM CDTSevere Thunderstorm WarningDMXCerro Gordo, Franklin48 min
Apr 26, 3:25 AM CDTSevere Thunderstorm WarningDMXAdair, Adams35 min
Apr 26, 4:01 AM CDTSevere Thunderstorm WarningDMXAdair44 min
Apr 26, 5:53 AM CDTSevere Thunderstorm WarningDMXHamilton, Hardin, Story37 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.