Alert archive / South Dakota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 199, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 28, 2002, 12:57 PM CDT for Beadle County, Kingsbury County, South Dakota. It was in force for 33 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 28, 2002, 12:57 PM CDT (17:57 UTC)
- Expired
- Jul 28, 2002, 1:30 PM CDT
- In force
- 33 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Counties, with a storm outline in the text
Counties Beadle County, SD, Kingsbury County, SD
The radar
The Aberdeen radar (KABR), 125 km from the middle of the area, began a volume at 17:58 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 28, 1:05 PM CDT | Hail 0.75 | Iroquois, SD | |
| Jul 28, 1:11 PM CDT | Hail 0.75 | Manchester, 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.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 6.0 hours before the alert went out and 71 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
- 99 J/kg
- Mixed-layer CIN
- -249 J/kg
- Mixed-layer LCL
- 1295 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 255 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
969 WUUS53 KFSD 281757 SVRFSD SDC005-077-281830- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 1255 PM CDT SUN JUL 28 2002 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN BEADLE COUNTY IN EAST CENTRAL SOUTH DAKOTA WESTERN KINGSBURY COUNTY IN EAST CENTRAL SOUTH DAKOTA * UNTIL 130 PM CDT * AT 1255 PM CDT...A SEVERE THUNDERSTORM WAS REPORTED OVER IROQUOIS...OR ABOUT 21 MILES EAST OF HURON...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL REMAIN IN... RURAL BEADLE THROUGH 110 PM RURAL KINGSBURY COUNTY THROUGH 130 PM CDT LAT...LON 4439 9801 4427 9783 4448 9745 4453 9780
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 12:02 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 38 min |
| Jul 28, 1:23 PM CDT | Tornado Warning | FSD | Kingsbury | 37 min |
| Jul 28, 1:25 PM CDT | Severe Thunderstorm Warning | FSD | Sanborn | 35 min |
| Jul 28, 1:40 PM CDT | Severe Thunderstorm Warning | FSD | Miner | 50 min |
| Jul 28, 1:59 PM CDT | Tornado Warning | FSD | Brookings, Kingsbury | 41 min |
| Jul 28, 2:12 PM CDT | Tornado Warning | FSD | Brookings | 48 min |
| Jul 28, 2:21 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Moody | 39 min |
| Jul 28, 2:48 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Moody | 42 min |
| Jul 28, 2:59 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 31 min |
| Jul 28, 3:19 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 41 min |
| Jul 28, 3:27 PM CDT | Severe Thunderstorm Warning | FSD | Moody | 33 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2002Every severe thunderstorm warning in 2002
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; radar from the NEXRAD Level II archive.