Alert archive / Iowa / Tornado Warnings in 1998

Tornado Warning 36, NWS Des Moines, IA

June 14, 1998Davis County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 14, 1998, 2:35 PM CDT for Davis County, Iowa. It was in force for 45 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: Jun 14, 1998, 2:35 PM CDT (19:35 UTC)
Expired: Jun 14, 1998, 3:20 PM CDT
In force: 45 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Davis County, IA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 14, 2:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 7.6 hours before the alert went out and 187 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: 8 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 922 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

949 
WFUS1 KDSM 141936 RRA
TORDSM
IAC051-142020-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
235 PM CDT SUN JUN 14 1998

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN DAVIS COUNTY IN SOUTHEASTERN IOWA

* UNTIL 320 PM CDT

* AT 232 PM CDT...STORM SPOTTERS REPORTED A TORNADO 31 MILES SOUTH
  OF OTTUMWA OR 12 MILES SOUTH SOUTHWEST OF PULASKI MOVING NORTH
  NORTHEAST AT 25 MPH.

* THIS TORNADO CAN BE EXPECTED NEAR...
   PULASKI            BY 250 PM CDT

A TORNADO IS ON THE GROUND GO TO THE BASEMENT IF A BASEMENT IS
NOT AVAILABLE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR

STARK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 1:10 AM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	35 min
Jun 14, 1:42 AM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	33 min
Jun 14, 2:06 AM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Union	49 min
Jun 14, 8:56 AM CDT	Flash Flood Warning	DMX	Cass	3 hr
Jun 14, 6:32 PM CDT	Flash Flood Warning	DMX	Audubon, Cass	11 hr

Nearby

Tornado Warnings in Iowa, 1998 Every tornado warning in 1998 Tornadoes 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.