Alert archive / Iowa / Tornado Warnings in 1996

Tornado Warning 26, NWS Sioux Falls, SD

August 10, 1996Dickinson County, Iowa; Jackson County, Minnesota

NWS Sioux Falls, SD issued this tornado warning at Aug 10, 1996, 3:48 PM CDT for Dickinson County, Iowa; Jackson County, Minnesota. It was in force for 32 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
Aug 10, 1996, 3:48 PM CDT (20:48 UTC)
Expired
Aug 10, 1996, 4:20 PM CDT
In force
32 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

Counties Dickinson County, IA, Jackson County, MN

What was reported inside it

TimeReportWhereRemark
Aug 10, 3:55 PM CDTThunderstorm Wind 52Spirit Lake, 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, 8.8 hours before the alert went out and 192 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 1996-08-10Temperature 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 1996-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.193958Sfc1 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
1164 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
138 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 KFSD 102049
TORFSD
IAC059-MNC063-102120-

BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
348 PM CDT SAT AUG 10 1996

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS SD HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 420 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHWEST MINNESOTA

   ...SOUTHERN JACKSON COUNTY

IN NORTHWEST IOWA

   ...NORTHERN DICKINSON COUNTY
 
AT 347 PM CDT...A POSSIBLE TORNADO WAS INDICATED BY SIOUX FALLS
DOPPLER RADAR 28 MILES SOUTHEAST OF WORTHINGTON  OR 2 MILES SOUTH
OF ORLEANS MOVING NORTH AT 15 MPH.

AT PRESENT MOVEMENT THE TORNADO WILL BE AROUND...
ORLEANS                  AROUND 356 PM CDT
 
IF YOU ARE IN THE PATH OF A TORNA$DO...THE SAFEST PLACE IN A HOME OR
BUSINESS IS AN INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE.  AVOID
WINDOWS.

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 10, 3:36 PM CDTTornado WarningFSDMurray49 min
Aug 10, 4:36 PM CDTSevere Thunderstorm WarningFSDPipestone34 min

Nearby

Tornado Warnings in Iowa, 1996Tornado Warnings in Minnesota, 1996Every tornado warning in 1996Tornadoes in 1996

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.