Alert archive / Iowa / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 300, NWS Des Moines, IA

October 14, 1998Emmet County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Oct 14, 1998, 1:26 PM CDT for Emmet County, Iowa. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 14, 1998, 1:26 PM CDT (18:26 UTC)
Expired
Oct 14, 1998, 2:00 PM CDT
In force
34 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Emmet County, IA

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 6.4 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, Minneapolis, MN at 12:00Z on 1998-10-14Temperature 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, Minneapolis, MN at 12:00Z on 1998-10-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
834 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
213 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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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
Oct 14, 1:24 PM CDTSevere Thunderstorm WarningDMXWebster31 min
Oct 14, 3:49 PM CDTTornado WarningDMXMarshall16 min
Oct 14, 4:18 PM CDTSevere Thunderstorm WarningDMXMarshall32 min
Oct 14, 4:51 PM CDTSevere Thunderstorm WarningDMXMarshall, Tama34 min
Oct 14, 5:21 PM CDTSevere Thunderstorm WarningDMXTama34 min
Oct 14, 6:58 PM CDTSevere Thunderstorm WarningDMXHardin32 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1998Every severe thunderstorm warning in 1998

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.