Alert archive / South Dakota / Tornado Warnings in 1997

Tornado Warning 36, NWS Aberdeen, SD

July 27, 1997Codington County, Hamlin County, South Dakota

NWS Aberdeen, SD issued this tornado warning at Jul 27, 1997, 6:02 PM CDT for Codington County, Hamlin County, South Dakota. It was in force for 48 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
Jul 27, 1997, 6:02 PM CDT (23:02 UTC)
Expired
Jul 27, 1997, 6:50 PM CDT
In force
48 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

Counties Codington County, SD, Hamlin County, SD

The radar

The Aberdeen radar (KABR), 119 km from the middle of the area, began a volume at 23:03 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.0 hours before the alert went out and 96 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, Aberdeen, SD at 12:00Z on 1997-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 903 joules per kilogram.LCLLFCEL10008507005003002001001 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, Aberdeen, SD at 12:00Z on 1997-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.1939587897Sfc1 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
903 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
1109 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

101 
WFUS1 KABR 272303 RRA
TORABR
SDC029-057-272350-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
602 PM CDT SUN JUL 27 1997

* TORNADO WARNING FOR
  SOUTHWESTERN CODINGTON COUNTY - NORTHEASTERN SOUTH DAKOTA
  NORTHWESTERN HAMLIN COUNTY - NORTHEASTERN SOUTH DAKOTA

* UNTIL 650 PM CDT
 
* SOME LOCATIONS AFFECTED
  GROVER                              AROUND 620 PM CDT
  HAZEL                               AROUND 625 PM CDT
  THOMAS                              AROUND 640 PM CDT

* AT 600 PM CDT...SPOTTERS REPORTED A TORNADO 14 MILES WEST OF
  WATERTOWN OR 7 MILES NORTHWEST OF GROVER  MOVING SOUTHEAST AT 15
  MPH.

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR

WCT/DEE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 4:36 AM CDTSevere Thunderstorm WarningABRJones49 min
Jul 27, 6:24 PM CDTFlash Flood WarningABRCodington, Deuel, Hamlin3 hr

Nearby

Tornado Warnings in South Dakota, 1997Every tornado warning in 1997Tornadoes in 1997

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; radar from the NEXRAD Level II archive.