Alert archive / South Dakota / Tornado Warnings in 1997

Tornado Warning 28, NWS Aberdeen, SD

July 25, 1997McPherson County, South Dakota

NWS Aberdeen, SD issued this tornado warning at Jul 25, 1997, 4:51 PM CDT for McPherson County, South Dakota. It was in force for 44 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, 4:51 PM CDT (21:51 UTC)
Expired: Jul 25, 1997, 5:35 PM CDT
In force: 44 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

County McPherson County, SD

The radar

The Aberdeen radar (KABR), 72 km from the middle of the area, began a volume at 21:53 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, 9.9 hours before the alert went out and 116 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.

615 
WFUS1 KABR 252152 RRA
TORABR
SDC089-252235-

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

* TORNADO WARNING FOR
  MCPHERSON COUNTY - NORTHEASTERN SOUTH DAKOTA

* UNTIL 535 PM CDT
 
* SOME LOCATIONS AFFECTED
  LONG LAKE..................................AROUND 530 PM CDT
  RURAL AREAS BETWEEN LONG LAKE AND EUREKA...AROUND 5 PM CDT

* AT 447 PM CDT...ABERDEEN DOPPLER RADAR INDICATED A TORNADO 48
  MILES NORTHEAST OF MOBRIDGE OR 23 MILES WEST OF LONG LAKE MOVING
  EAST AT 30 MPH.  SPOTTERS HAVE REPORTED SEVERAL FUNNEL CLOUDS
  WITH THIS STORM.

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, 5:37 PM CDT	Tornado Warning	ABR	Edmunds, McPherson	58 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.