Alert archive / South Dakota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 67, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 25, 1986, 8:20 PM CDT for Beadle County, South Dakota. It was in force for 55 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 25, 1986, 8:20 PM CDT (01:20 UTC)
- Expired
- Jul 25, 1986, 9:15 PM CDT
- In force
- 55 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
County Beadle 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 25, 8:30 PM CDT | Thunderstorm Wind 52 | Beadle, SD | |
| Jul 25, 9:00 PM CDT | Thunderstorm Wind 52 | Beadle, 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, 1.3 hours before the alert went out and 55 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
- 1525 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1523 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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
Special weather statement, Jul 25, 2:56 PM CDT, 5 hours 24 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 255 PM CDT FRI JUL 25 1986 ...THUNDERSTORMS DEVELOPING OVER NORTH CENTRAL SOUTH DAKOTA... AT 250 PM CDT RADAR INDICATED RAPIDLY DEVELOPING THUNDERSTORM ACTIVITY OVER THE NORTH CENTRAL SOUTH DAKOTA COUNTIES OF WALWORTH..POTTER AND FAULK MOVING EAST AT 15 MPH. PERSONS WITHIN THE PATH OF THESE THUNDERSTORMS CAN EXPECT PERIODS OF BRIEF HEAVY RAIN..SMALL HAIL IS POSSIBLE AND GUSTY pSURFACE WIND FOR THE NEXT COUPLE OF HOURS TIL 5 PM CDT. THESE THUNDERSORMS WILL MOVE ACROSS THE FOLLOWING COUNTIES BETWEEN 3 PM AND 5 PM CDT..SOUTHERN MCPHERSON..EDMUNDS AND WEST PORTIONS OF SPINK AND BROWN COUNTIES. STUDNICKA
Local storm report, Jul 25, 4:23 PM CDT, 3 hours 57 minutes before
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Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 9:09 PM CDT | Severe Thunderstorm Warning | ABR | Beadle, Kingsbury | 66 min |
| Jul 26, 12:22 AM CDT | Tornado Warning | ABR | Kingsbury, Miner | 38 min |
| Jul 26, 12:42 AM CDT | Severe Thunderstorm Warning | ABR | Jerauld, Sanborn | 48 min |
| Jul 26, 4:35 PM CDT | Severe Thunderstorm Warning | ABR | Corson | 55 min |
| Jul 26, 5:34 PM CDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 56 min |
| Jul 26, 5:42 PM CDT | Severe Thunderstorm Warning | ABR | Walworth | 63 min |
| Jul 26, 6:33 PM CDT | Severe Thunderstorm Warning | ABR | Dewey | 57 min |
| Jul 26, 6:39 PM CDT | Severe Thunderstorm Warning | ABR | Jerauld, Sanborn | 66 min |
| Jul 26, 6:45 PM CDT | Severe Thunderstorm Warning | ABR | Walworth | 60 min |
| Jul 26, 6:51 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Stanley | 69 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 1986Every severe thunderstorm warning in 1986
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.