Alert archive / South Dakota / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 115, NWS Aberdeen, SD

August 5, 1987Buffalo County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 5, 1987, 7:53 PM CDT for Buffalo County, South Dakota. It was in force for 67 min.

The area

The counties it named.

The facts

Issued: Aug 5, 1987, 7:53 PM CDT (00:53 UTC)
Expired: Aug 5, 1987, 9:00 PM CDT
In force: 67 min
Issued by: NWS Aberdeen, SD
Area: Whole counties

County Buffalo County, SD

The radar

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

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 0.9 hours before the alert went out and 112 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: 1188 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1877 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 229 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Aug 5, 6:25 PM CDT, 1 hour 28 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
620 PM CDT WED AUG 5 1987

STORM DATA FOR WEDNESDAY AUG 5 1987

 TIME            COUNTY..LOCATION           CHARACTER OF STORM..DAMAGE
.......................................................................

 430 PM CDT     POTTER...GETTYSBURG.       MARBLE SIZE HAIL AND VERY
                                           HEAVY RAIN (SPOTTER)
 520 PM CDT     POTTER - WALWORTH          GOLFBALL SIZE HAIL (SPOTTER)
                COUNTY LINE 20N
                GETTYSBURG.
 535 PM CDT     EDMUNDS...BOWDLE 8E.       60 MPH WIND...MARBEL HAIL.
                                           (STATE POLICE)
 538 PM CDT     EDMUNDS...BOWDLE.          GOLFBALL HAIL. (STATE POLICE
 539 PM CDT     EDMUNDS...HOSMER.          GOLFBALL HAIL. (STATE POLICE
 540 PM CDT     WALWORTH...AKASKA.         MARBEL HAIL...HEAVY RAIN.
 555 PM CDT     EDMUNDS...HOSMER 10E.      MARBEL TO GOLFBALL HAIL WITH
         D                                  THE GROUND COVERED AND
                                           HEAVY RAIN. (SPOTTER)
 STUDNICKA

Local storm report, Aug 5, 7:35 PM CDT, 18 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 7:01 PM CDT	Severe Thunderstorm Warning	ABR	Brown	59 min
Aug 5, 7:09 PM CDT	Tornado Warning	ABR	Buffalo, Lyman	36 min
Aug 5, 7:32 PM CDT	Severe Thunderstorm Warning	ABR	Beadle	58 min
Aug 5, 8:01 PM CDT	Severe Thunderstorm Warning	ABR	Jerauld, Sanborn	59 min
Aug 5, 8:17 PM CDT	Severe Thunderstorm Warning	ABR	Clark	58 min
Aug 5, 8:17 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	58 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1987 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive.