Alert archive / Iowa / Tornado Warnings in 1992

Tornado Warning 7, NWS Des Moines, IA

June 16, 1992Black Hawk County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 16, 1992, 3:11 PM CDT for Black Hawk County, Iowa. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Jun 16, 1992, 3:11 PM CDT (20:11 UTC)
Expired
Jun 16, 1992, 4:15 PM CDT
In force
64 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Black Hawk County, IA

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 8.2 hours before the alert went out and 284 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 1992-06-16Temperature 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 1992-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 207 square meters per square second.19395878Sfc1 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
596 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
207 m²/s²
0-3 km storm-relative helicity
165 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 KALO 162012
TORALO
IAC013-162115-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WATERLOO IA
311 PM CDT TUE JUN 16 1992
 
THE NATIONAL WEATHER SERVICE IN WATERLOO HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  415 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST IOWA
 
   ...BLACK HAWK COUNTY
 
THIS IS A CORRECTED STATEMENT TO THE TORNADO WARNING ISSUED FOR BLACK
HAWK COUNTY...THE DIRECTION OF MOVEMENT IS TO THE NORTHEAST AT 20 MILES
AN HOUR AND NOT 20 MILES AN HOUR TO THE WEST.
 
DURING A TORNADO...THE SAFEST PLACE IS IN 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.  AVOID WINDOWS.
 
 
SPEECE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 2:46 PM CDTSevere Thunderstorm WarningDMXBlack Hawk59 min
Jun 16, 3:03 PM CDTTornado WarningDMXBlack Hawk57 min
Jun 16, 3:21 PM CDTTornado WarningDMXBremer39 min
Jun 16, 4:01 PM CDTSevere Thunderstorm WarningDMXBremer, Chickasaw, Fayette44 min

Nearby

Tornado Warnings in Iowa, 1992Every tornado warning in 1992Tornadoes 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; the sounding from the Mesonet's radiosonde archive.