Alert archive / South Dakota / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 49, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 16, 1986, 3:09 AM CDT for Walworth County, South Dakota. It was in force for 66 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 16, 1986, 3:09 AM CDT (08:09 UTC)
- Expired
- Jul 16, 1986, 4:15 AM CDT
- In force
- 66 min
- Issued by
- NWS Aberdeen, SD
- Area
- Whole counties
County Walworth 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 16, 3:10 AM CDT | Thunderstorm Wind 52 | Walworth, 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, 8.2 hours before the alert went out and 141 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
- 4688 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 906 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 4.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KABR 160809 SVRABR SDC129-160915- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ABERDEEN SD 309 AM CDT WED JUL 16 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 415 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF NORTH CENTRAL SOUTH DAKOTA...WALWORTH THIS WARNING INCLUDES THE ADJACENT WATERS OF THE MISSOURI RIVER. SOME OF THE CITIES INCLUDED IN THIS WARNING IS AKASKA..LOWRY.. JAVA..SELBY AND MOBRIDGE. AT 300 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM OVER THE ENTIRE POTTER AND WALWORTH COUNTY LINE OF NORTH CENTRAL SOUTH DAKOTA MOVING NORTHEAST AT 25 MPH. AS THIS STORM MOVED OVER SULLY AND POTTER COUNTIES OF NORTH CENTRAL SOUTH DAKOTA AGAR IN NORTHERN SULLY HAD SOME WIND DAMAGE WITH WINDS AROUND 60 MPH. IN THE GETTYSBURG AREA SOME STRONG WIND..VERY HEAVY RAIN AND MARBLE SIZE HAIL. IF YOU ARE IN THE PATH OF THIS STORM..YOU SHOULD GET TO A REINFORCED SHELTER. A SEVERE THUNDERSTORM PRODUCES DAMAGING WINDS IN EXCESS OF 60 MPH..HAIL 3/4 INCH OR LARGER..DEADLY LIGHTNING..AND HEAVY RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA. THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITlH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT. STUDNICKA
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 1:02 AM CDT | Severe Thunderstorm Warning | ABR | Jones, Stanley | 58 min |
| Jul 16, 1:34 AM CDT | Severe Thunderstorm Warning | ABR | Hughes, Sully | 56 min |
| Jul 16, 2:34 AM CDT | Severe Thunderstorm Warning | ABR | Potter | 56 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.