Alert archive / South Dakota / Tornado Warnings in 1997

Tornado Warning 29, NWS Aberdeen, SD

July 25, 1997Edmunds County, McPherson County, South Dakota

NWS Aberdeen, SD issued this tornado warning at Jul 25, 1997, 5:37 PM CDT for Edmunds County, McPherson County, South Dakota. It was in force for 58 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 25, 1997, 5:37 PM CDT (22:37 UTC)
Expired: Jul 25, 1997, 6:35 PM CDT
In force: 58 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

Counties Edmunds County, SD, McPherson County, SD

The radar

The Aberdeen radar (KABR), 65 km from the middle of the area, began a volume at 22:40 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, 10.6 hours before the alert went out and 100 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: 764 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 926 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KABR 252238 RRA
TORABR
SDC045-089-252335-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
537 PM CDT FRI JUL 25 1997

* TORNADO WARNING FOR
  NORTH CENTRAL AND NORTHEASTERN EDMUNDS COUNTY - NORTHEASTERN SOUTH
  DAKOTA
  CENTRAL AND EASTERN MCPHERSON COUNTY - NORTHEASTERN SOUTH
  DAKOTA

* UNTIL 635 PM CDT
 
* SOME LOCATIONS AFFECTED
  LEOLA                               AROUND 600 PM CDT
  PLAINVIEW COLONY                    AROUND 610 PM CDT
  LONG LAKE COLONY                    AROUND 620 PM CDT
  WETONKA                             AROUND 620 PM CDT

* AT 530 PM CDT...ABERDEEN DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM 42 MILES NORTHWEST OF ABERDEEN OR 17 MILES WEST OF
LEOLA MOVING EAST AT 30 MPH.

THIS IS A VERY DANGEROUS STORM WITH A HISTORY OF PRODUCING FUNNEL
CLOUDS.  GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR!

WCT/CB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 8:36 PM CDT	Severe Thunderstorm Warning	ABR	Jones	64 min
Jul 24, 9:07 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Spink	63 min
Jul 24, 9:45 PM CDT	Tornado Warning	ABR	Clark	30 min
Jul 24, 9:51 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Hamlin	94 min
Jul 24, 11:21 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	34 min
Jul 25, 12:07 AM CDT	Severe Thunderstorm Warning	ABR	Hamlin	48 min
Jul 25, 12:14 AM CDT	Flash Flood Warning	ABR	Clark, Codington, Deuel, Hamlin	3 hr
Jul 25, 4:37 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, McPherson	58 min
Jul 25, 4:51 PM CDT	Tornado Warning	ABR	McPherson	44 min
Jul 25, 6:22 PM CDT	Severe Thunderstorm Warning	ABR	Corson	63 min
Jul 25, 6:36 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds	64 min
Jul 25, 6:45 PM CDT	Tornado Warning	ABR	Edmunds	50 min
Jul 25, 6:56 PM CDT	Tornado Warning	ABR	Brown	34 min

Nearby

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