Alert archive / South Dakota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 192, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 24, 2002, 9:43 PM CDT for Charles Mix County, South Dakota. It was in force for 47 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 24, 2002, 9:43 PM CDT (02:43 UTC)
- Expired
- Jul 24, 2002, 10:30 PM CDT
- In force
- 47 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Counties, with a storm outline in the text
County Charles Mix County, SD
The radar
The Sioux Falls radar (KFSD), 176 km from the middle of the area, began a volume at 02:44 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 24, 9:43 PM CDT | Hail 0.75 | Platte, SD | |
| Jul 24, 9:53 PM CDT | Hail 0.75 | Platte, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 24, 4:50 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 2.7 hours before the alert went out and 172 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
- 2473 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1734 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 14.5
The text
As transmitted, in the capitals the NWS used until 2016.
577 WUUS53 KFSD 250243 SVRFSD SDC023-250330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 943 PM CDT WED JUL 24 2002 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN CHARLES MIX COUNTY IN SOUTH CENTRAL SOUTH DAKOTA * UNTIL 1030 PM CDT * AT 943 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES NORTHWEST OF PLATTE...OR ABOUT 28 MILES SOUTHEAST OF CHAMBERLAIN...MOVING SOUTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... PLATTE AROUND 1005 PM CDT THIS EXTENDS THE PREVIOUS WARNING FOR NORTHERN CHARLES MIX COUNTY THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS. A TORNADO WATCH IS ALSO IN EFFECT FOR THE AREA UNTIL 10 PM CDT. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED. LAT...LON 4350 9892 4348 9917 4318 9885 4333 9861
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 7:05 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson | 40 min |
| Jul 24, 7:17 PM CDT | Severe Thunderstorm Warning | FSD | Sanborn | 13 min |
| Jul 24, 7:21 PM CDT | Severe Thunderstorm Warning | FSD | Miner | 39 min |
| Jul 24, 7:36 PM CDT | Severe Thunderstorm Warning | FSD | McCook | 39 min |
| Jul 24, 7:46 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson | 29 min |
| Jul 24, 7:52 PM CDT | Tornado Warning | FSD | McCook | 23 min |
| Jul 24, 8:04 PM CDT | Severe Thunderstorm Warning | FSD | Turner | 56 min |
| Jul 24, 8:11 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 34 min |
| Jul 24, 8:14 PM CDT | Severe Thunderstorm Warning | FSD | McCook | 31 min |
| Jul 24, 8:21 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson | 24 min |
| Jul 24, 8:22 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 53 min |
| Jul 24, 8:24 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Yankton | 36 min |
| Jul 24, 8:46 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 44 min |
| Jul 24, 8:51 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 24 min |
| Jul 24, 9:06 PM CDT | Severe Thunderstorm Warning | FSD | Yankton | 24 min |
| Jul 24, 9:15 PM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix | 30 min |
| Jul 24, 10:23 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix | 37 min |
| Jul 24, 10:57 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix | 33 min |
| Jul 25, 1:38 AM CDT | Severe Thunderstorm Warning | FSD | Union | 27 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.