Alert archive / Iowa / Tornado Warnings in 1992

Tornado Warning 9, NWS Des Moines, IA

June 16, 1992Crawford County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 16, 1992, 10:03 PM CDT for Crawford County, Iowa. It was in force for 42 min. 1 report 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 16, 1992, 10:03 PM CDT (03:03 UTC)
Expired: Jun 16, 1992, 10:45 PM CDT
In force: 42 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Crawford County, IA

What was reported inside it

Time	Report	Where	Remark
Jun 16, 10:10 PM CDT	Tornado F3	Crawford, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Omaha, NE (KOVN), launched 00:00Z, 3.1 hours before the alert went out and 114 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: 4794 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1163 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 238 m²/s²
0-3 km storm-relative helicity: 449 m²/s²
Significant tornado parameter: 8.2
Supercell composite: 39.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDSM 170303
TORDSM
IAC047-170345-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1003 PM CDT TUE JUN 16 1992
 
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1045 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL IOWA
 
   ...WESTERN CRAWFORD COUNTY
 
AT 1000 PM...DES MOINES RADAR AND CRAWFORD COUNTY SHERIFF INDICATED A
TORNADO 2 MILES WEST OF DOW CITY IN SOUTHWEST CRAWFORD COUNTY...OR ABOUT
60 MILES NORTHEAST OF OMAHA.
 
THE TORNADO WAS MOVING NORTHEAST AT 25 MILES AN HOUR.  PEOPLE IN THE
RURAL AREAS OF SOUTHWEST CRAWFORD AND IN THE COMMUNITIES OF DOW
CITY...DENISON AND ARION IN THE PATH OF THIS STORM.
 
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING FOR CRAWFORD
COUNTY.
 
MYERS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 9:59 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	46 min
Jun 16, 10:41 PM CDT	Severe Thunderstorm Warning	DMX	Dickinson	49 min
Jun 17, 3:44 AM CDT	Severe Thunderstorm Warning	DMX	Tama	22 min
Jun 17, 4:00 AM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy	45 min

Nearby

Tornado Warnings in Iowa, 1992 Every tornado warning in 1992 Tornadoes in 1992

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.