Alert archive / South Dakota / Tornado Warnings in 1987

Tornado Warning 7, NWS Aberdeen, SD

July 6, 1987Hughes County, Hyde County, South Dakota

NWS Aberdeen, SD issued this tornado warning at Jul 6, 1987, 6:40 PM CDT for Hughes County, Hyde County, South Dakota. It was in force for 10 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: Jul 6, 1987, 6:40 PM CDT (23:40 UTC)
Expired: Jul 6, 1987, 6:50 PM CDT
In force: 10 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

Counties Hughes County, SD, Hyde County, SD

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Jul 6, 7:00 PM CDT	Hail 4.5	Hyde, SD

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Aberdeen, SD (KHON), launched 12:00Z, 11.7 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: 190 J/kg
Mixed-layer CIN: -276 J/kg
Mixed-layer LCL: 1517 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 69 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 KHON 062340
TORHON
SDC069-065-070015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE HURON SD
640 PM CDT MON JUL 6 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 715 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

CENTRAL SOUTH DAKOTA...CENTRAL HYDE AND EXTREME NORTHEAST HUGHES

SOME OF THE CITIES INCLUDED IN THIS WARNING ARE HAROLD
HOLABIRD HIGHMORE

AT 640 PM CDT  A TORNADO WAS REPORTED WAS REPORTED NEAR THE TOWN
OF HAROLD. MOVING EAST AT 15 MILES AN HOUR.

IF YOU ARE IN THE PATH OF THIS TORNADO...YOU SHOULD GO TO A BASEMENT
SHELTER IF AVAILABLE. OTHERWISE GO TO A CENTRAL INTERIOR ROOM ON THE
LOWEST FLO&OR POSSIBLE. CARS AND MOBILE HOMES SHOULD BE ABANDONED FOR
A REINFORCED BUILDING.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 4:53 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Hyde	67 min
Jul 6, 5:22 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Hyde	68 min
Jul 6, 5:26 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Walworth	64 min
Jul 6, 5:26 PM CDT	Severe Thunderstorm Warning	ABR	Potter	64 min
Jul 6, 5:45 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk	60 min
Jul 6, 5:45 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	60 min
Jul 6, 5:47 PM CDT	Severe Thunderstorm Warning	ABR	Hand, Hyde	58 min
Jul 6, 5:54 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo	66 min
Jul 6, 6:18 PM CDT	Tornado Warning	ABR	Hand	27 min
Jul 6, 6:25 PM CDT	Tornado Warning	ABR	Buffalo	35 min
Jul 6, 6:30 PM CDT	Tornado Warning	ABR	Faulk	30 min
Jul 6, 6:35 PM CDT	Tornado Warning	ABR	Lyman	25 min
Jul 6, 6:45 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, McPherson	60 min

Nearby

Tornado Warnings in South Dakota, 1987 Every tornado warning in 1987 Tornadoes in 1987

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.