Alert archive / Iowa / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 204, NWS Des Moines, IA

June 26, 1998Emmet County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 26, 1998, 10:29 AM CDT for Emmet County, Iowa. It was in force for 61 min. 10 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 26, 1998, 10:29 AM CDT (15:29 UTC)
Expired: Jun 26, 1998, 11:30 AM CDT
In force: 61 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Emmet County, IA

What was reported inside it

Time	Report	Where
Jun 26, 10:51 AM CDT	Hail 0.75	Estherville, IA
Jun 26, 11:06 AM CDT	Hail 0.75	Estherville, IA
Jun 26, 11:10 AM CDT	Hail 0.75	Estherville, IA
Jun 26, 11:15 AM CDT	Hail 1	Estherville, IA
Jun 26, 11:15 AM CDT	Hail 3	Dolliver, IA
Jun 26, 11:19 AM CDT	Hail 1.75	Estherville, IA
Jun 26, 11:21 AM CDT	Hail 1.75	Estherville Arpt, IA
Jun 26, 11:26 AM CDT	Hail 1	Estherville, IA
Jun 26, 11:30 AM CDT	Hail 1.75	Estherville, IA
Jun 26, 11:32 AM CDT	Hail 1.75	Gruver, IA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 3.5 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1352 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 105 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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 26, 6:49 AM CDT, 3 hours 40 minutes before

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Special weather statement, Jun 26, 6:49 AM CDT, 3 hours 40 minutes before

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Special weather statement, Jun 26, 6:49 AM CDT, 3 hours 40 minutes before

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Special weather statement, Jun 26, 7:14 AM CDT, 3 hours 15 minutes before

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Special weather statement, Jun 26, 8:17 AM CDT, 2 hours 12 minutes before

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Special weather statement, Jun 26, 8:20 AM CDT, 2 hours 9 minutes before

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The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 26, 11:25 AM CDT	Severe Thunderstorm Warning	DMX	Emmet	30 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1998 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.