Alert archive / Iowa / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 60, NWS Des Moines, IA

June 15, 1993Clay County, Dickinson County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 15, 1993, 10:45 PM CDT for Clay County, Dickinson County, Iowa. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Jun 15, 1993, 10:45 PM CDT (03:45 UTC)
Expired
Jun 15, 1993, 11:30 PM CDT
In force
45 min
Issued by
NWS Des Moines, IA
Area
Whole counties

Counties Clay County, IA, Dickinson County, IA

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 3.8 hours before the alert went out and 319 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, Aberdeen, SD at 00:00Z on 1993-06-16Temperature 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, Aberdeen, SD at 00:00Z on 1993-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 361 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
1375 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
361 m²/s²
0-3 km storm-relative helicity
661 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.1

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 Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 16, 5:39 AM CDTSevere Thunderstorm WarningDMXPalo Alto36 min
Jun 16, 6:02 AM CDTSevere Thunderstorm WarningDMXPocahontas12 hr
Jun 16, 6:35 AM CDTSevere Thunderstorm WarningDMXHumboldt, Webster35 min
Jun 16, 7:18 AM CDTSevere Thunderstorm WarningDMXWebster27 min
Jun 16, 7:22 AM CDTTornado WarningDMXWebster23 min
Jun 16, 7:34 AM CDTSevere Thunderstorm WarningDMXHamilton, Wright26 min
Jun 16, 7:35 AM CDTSevere Thunderstorm WarningDMXFranklin35 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1993Every severe thunderstorm warning 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.