Alert archive / South Dakota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 152, NWS Rapid City, SD
NWS Rapid City, SD issued this severe thunderstorm warning at Aug 24, 2002, 12:27 AM CDT for Tripp County, South Dakota. It was in force for 33 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
- Aug 24, 2002, 12:27 AM CDT (05:27 UTC)
- Expired
- Aug 24, 2002, 1:00 AM CDT
- In force
- 33 min
- Issued by
- NWS Rapid City, SD
- Area
- Counties, with a storm outline in the text
County Tripp County, SD
The radar
The North Platte radar (KLNX), 164 km from the middle of the area, began a volume at 05:27 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 |
|---|---|---|---|
| Aug 24, 12:40 AM CDT | Thunderstorm Wind 52 E | Wewela, SD | Four inch diameter tree limbs were blown down. |
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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 5.5 hours before the alert went out and 253 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
- 1117 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 2523 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
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.
NWS Rapid City, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 23, 9:45 PM CDT, 2 hours 42 minutes earlier.
Area forecast discussion, Aug 23, 9:45 PM CDT, 2 hours 42 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 845 PM MDT FRI AUG 23 2002 MASSIVE LINE OF CONVECTION ARCING FROM THE NORTHERN ROCKIES SOUTHEASTWARD TO THE TEXAS PANHANDLE TONIGHT. EMBEDDED STRONG THUNDERSTORMS PRODUCING LARGE HAIL AND LOCALLY HEAVY RAIN ACROSS MUCH OF NERN WYOMING AND WRN SOUTH DAKOTA. PER AFTN DISCUSSION FORCING MECHANISMS AHEAD OF THE NWRN U.S. UPPER LOW ARE LIKELY TO BE AROUND AT LEAST THROUGH SATURDAY WARRANTING HIGH POPS AND A CONTINUATION OF THE FLOOD WATCH FOR LAWRENCE COUNTY. FOR THE REMAINDER OF TONIGHT...CONVECTION IS LIKELY TO CONTINUE TO DRIFT ACROSS THE FORECAST AREA...WITH MOSTLY LIGHT TO MODERATE PCPN...AND OCCASIONAL HEAVIER EMBEDDED THUNDERSTORMS. WILL UPDATE WORDING IN ZONES...BUT NO SIGNIFANCT CHANGES TO CURRENT TRENDS. .UNR...FLOOD WATCH THRU SAT EVE FOR LAWRENCE COUNTY. CARPENTER
In the hours before
Local storm report, Aug 23, 11:19 PM CDT, 1 hour 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
1019 PM MDT FRI AUG 23 2002
TIME(MDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0500 PM 4 W SCENIC SD .75 INCH HAIL
08/23/02 PENNINGTON REPORTED BY PUBLIC.
0600 PM 11 N PORCUPINE SD .75 INCH HAIL
08/23/02 SHANNON REPORTED BY COOPERATIVE
OBSERVER.
0615 PM 9 SW KYLE SD 70-80 MPH TSTM GUST
08/23/02 SHANNON REPORTED BY PUBLIC.
0630 PM 5 N KYLE SD 67 MPH TSTM GUST
08/23/02 SHANNON LAND MANAGEMENT
AUTOMATED OBSERVATION STATION TIME APPROXIMATE
0645 PM 12 W WRIGHT WY 1 INCH HAIL
08/23/02 CAMPBELL REPORTED BY COOPERATIVE
OBSERVER.
0733 PM (GCC)GILLETTE ARPT WY 59 MPH TSTM GUST
08/23/02 CAMPBELL AUTOMATED WEATHER
STATION AT AIRPORT
0740 PM 10 SW RAPID CITY SD 1.75 INCH HAIL
08/23/02 PENNINGTON REPORTED BY OFF-DUTY
NWS EMPLOYEES FROM NEAR
ROCKERVILLE...9SW RAPID
CITY...TO SHERIDAN LAKE
ROAD...5SW RAPID CITY.
EVENT DURATION 8 MINUTES.
0810 PM 7 S ENNING SD .75 INCH HAIL
08/23/02 MEADE REPORTED BY STORM
SPOTTER.
0830 PM RED OWL SD .75 INCH HAIL
08/23/02 MEADE REPORTED BY COOPERATIVE
OBSERVER.The office that day
Everything else NWS Rapid City, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 7:16 PM CDT | Severe Thunderstorm Warning | UNR | 59 min | |
| Aug 23, 7:48 PM CDT | Tornado Warning | UNR | Bennett | 57 min |
| Aug 23, 8:44 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 61 min |
| Aug 23, 8:45 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 60 min |
| Aug 24, 4:14 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence | 61 min |
| Aug 24, 5:09 PM CDT | Flash Flood Warning | UNR | Lawrence | 4 hr |
| Aug 24, 5:31 PM CDT | Flash Flood Warning | UNR | Lawrence | 3 hr |
| Aug 23, 7:51 PM CDT | Severe Thunderstorm Warning | UNR | Campbell | 54 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.