Alert archive / South Dakota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 27, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 6, 1987, 10:54 PM CDT for Deuel County, Hamlin County, South Dakota. It was in force for 66 min. 2 reports 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, 10:54 PM CDT (03:54 UTC)
- Expired
- Jul 7, 1987, 12:00 AM CDT
- In force
- 66 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
Counties Deuel County, SD, Hamlin 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, 11:05 PM CDT | Thunderstorm Wind 60 | Hamlin, SD | |
| Jul 6, 11:08 PM CDT | Thunderstorm Wind 58 | Deuel, 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 00:00Z, 3.9 hours before the alert went out and 118 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.
- Mixed-layer CAPE
- 2161 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 1688 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 195 m²/s²
- 0-3 km storm-relative helicity
- 213 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, Jul 6, 7:05 PM CDT, 3 hours 49 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
705 PM CDT MON JUL 6 1987
TIME EVENT AND LOCATION.
450 PM CDT MARBLE SIZE HAIL WITH SOME TO ONE INCH AT GETTYSBURG
IN POTTER COUNTY.
505 PM CDT MARBLE SIZE HAIL AT SELBY IN WALWORTH COUNTY.
525 PM CDT MARBLE SIZE HAIL AT TOLSTOY AND HOVEN IN POTTER
COUNTY.
550 PM CDT MARBLE SIZE HAIL AT EUREKA IN MCPHERSON COUNTY.
625 PM CDT GOLFWBALL SIZE HAIL NEAR ONAKA IN FAULK COUNTY.
615 PM CDT MARBLE SIZE HAIL AT SENECA IN FAULK COUNTY.
STUDNICKAThe office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 7:09 PM CDT | Tornado Warning | ABR | Buffalo | 36 min |
| Jul 6, 7:22 PM CDT | Severe Thunderstorm Warning | ABR | Jerauld | 68 min |
| Jul 6, 7:28 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 62 min |
| Jul 6, 7:46 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Walworth | 59 min |
| Jul 6, 7:49 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo | 56 min |
| Jul 6, 8:06 PM CDT | Severe Thunderstorm Warning | ABR | Hand, Hyde | 64 min |
| Jul 6, 8:31 PM CDT | Severe Thunderstorm Warning | ABR | Jerauld | 59 min |
| Jul 6, 9:52 PM CDT | Severe Thunderstorm Warning | ABR | Miner | 68 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 1987Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.