Alert archive / Iowa / Tornado Warnings in 1990

Tornado Warning 3, NWS Des Moines, IA

March 13, 1990Jefferson County, Van Buren County, Iowa

NWS Des Moines, IA issued this tornado warning at Mar 13, 1990, 3:57 PM CST for Jefferson County, Van Buren County, Iowa. It was in force for 33 min.

The area

The counties it named.

The facts

Issued: Mar 13, 1990, 3:57 PM CST (21:57 UTC)
Expired: Mar 13, 1990, 4:30 PM CST
In force: 33 min
Issued by: NWS Des Moines, IA
Area: Whole counties

Counties Jefferson County, IA, Van Buren County, IA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.0 hours before the alert went out and 373 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: 3580 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 361 m²/s²
0-3 km storm-relative helicity: 336 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.

000 
TTAA00 KDSM 132158
TORDSM
IAC101-177-132230-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
357 PM CST TUE MAR 13 1990
 
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  430 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTHEAST IOWA
          ...WESTERN JEFFERSON...SOUTHEASTERN WAPELLO
 
AT 355 PM...THE DAVIS COUNTY SHERIFFS OFFICE CONTINUED TO RECEIVE
REPORTS OF TORNADOES FROM THE STORM OVER EXTREME NORTHEAST DAVIS COUNTY.ABOUT 15 MILES SOUTHEAST OF OTTUMWA.
 
THE STORM CONTINUED MOVING NORTHEAST AT 45 MILES AN HOUR...AND WILL BE
AFFECTING ELDON...BATAVIA...AND LIBERTYVILLE.
 
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 IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARSF AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
 
KS/TRUETT

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 12, 8:55 PM CST	Severe Thunderstorm Warning	DMX	Madison, Polk	50 min
Mar 12, 11:17 PM CST	Severe Thunderstorm Warning	DMX	Appanoose, Monroe	33 min
Mar 12, 11:28 PM CST	Severe Thunderstorm Warning	DMX	Lucas, Wayne	20 min
Mar 12, 11:53 PM CST	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Lucas	52 min
Mar 13, 12:38 PM CST	Severe Thunderstorm Warning	DMX	Wright	17 min
Mar 13, 1:33 PM CST	Severe Thunderstorm Warning	DMX	Poweshiek	27 min
Mar 13, 1:51 PM CST	Severe Thunderstorm Warning	DMX	Tama	39 min
Mar 13, 1:55 PM CST	Severe Thunderstorm Warning	DMX	Carroll	35 min
Mar 13, 2:28 PM CST	Severe Thunderstorm Warning	DMX	Calhoun	42 min
Mar 13, 2:31 PM CST	Severe Thunderstorm Warning	DMX	Black Hawk	49 min
Mar 13, 3:24 PM CST	Severe Thunderstorm Warning	DMX	Davis	36 min
Mar 13, 3:42 PM CST	Tornado Warning	DMX	Davis	18 min
Mar 13, 4:18 PM CST	Severe Thunderstorm Warning	DMX	Bremer	22 min
Mar 13, 4:18 PM CST	Severe Thunderstorm Warning	DMX	Chickasaw	47 min
Mar 13, 5:11 PM CST	Severe Thunderstorm Warning	DMX	Washington	49 min
Mar 13, 5:16 PM CST	Severe Thunderstorm Warning	DMX	Johnson	29 min

Nearby

Tornado Warnings in Iowa, 1990 Every tornado warning in 1990 Tornadoes in 1990

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.