Alert archive / South Dakota / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 147, NWS Rapid City, SD

August 23, 2002

NWS Rapid City, SD issued this severe thunderstorm warning at Aug 23, 2002, 6:19 PM CDT. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 23, 2002, 6:19 PM CDT (23:19 UTC)
Expired: Aug 23, 2002, 7:15 PM CDT
In force: 56 min
Issued by: NWS Rapid City, SD
Area: Counties, with a storm outline in the text

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, 3:15 PM CDT, 3 hours 4 minutes earlier.

Area forecast discussion, Aug 23, 3:15 PM CDT, 3 hours 4 minutes before

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
215 PM MDT FRI AUG 23 2002

STRONG UPR LOW OR/ID BDR SHOWING LITTLE MOVEMENT PER WATER VAPOR
IMAGERY. A JET STREAK IS DEPICTED OVER NRN UT...AND IS AIDING IN
CONVECTIVE DVLPMT ACRS THE NRN ROCKIES. TSTMS OVR THE BLKHLS HAVE
ALREADY REACHED SVR CRITERIA WITH LARGE HAIL. MAIN FCST CONCERNS
CENTERED AROUND HEAVY RAIN POTENTIAL THROUGH SAT...WITH THE
POSSIBILITY OF SOME STORMS CONTAINING LARGE HAIL.

EXPECT ACTIVITY TO CONT TO DEVELOP AND MOVE EWD ACRS THE CWFA
THROUGH SAT...AS 700MB TROF ROTATES THROUGH NRN PLAINS.  SE FLOW
WILL CONT TO DEEPEN...AND LATEST HODOGRAPHS INDICATE SHEAR WILL
INCREASE SOMEWHAT TONIGHT FOR POTENTIAL ROTATING UPDRAFTS. BIGGEST
CONCERN REMAINS HEAVY RAIN POTENTIAL AS STORM MOVEMENT WILL BE VERY
SLOW.

BY SAT NIGHT...700MB TROF MOVS N/E OF CWFA CUTTING OFF DEEP MOISTURE
SOURCE. HOWEVER...WILL NEED TO LEAVE POPS IN FCST THRU REMAINDER OF
3 DAY FCST AS MAIN UPR TROF REMAINS WEST OF AREA...KEEPING AREA
UNDER UNSTABLE SW FLOW ALOFT.

EXTENDED...TUE-WED STILL UNSETTLED AS UPR TROF CROSSES NRN PLAINS.
TEMPS SHOULD REMAIN WITHIN REACH OF CLIMO THESE DAYS. DRIER WITH
WARMING TREND EXPECTED THU-FRI AS UPR RIDGE BUILDS ACRS REGION IN
ADVANCE OF WEST COAST TROF.

.UNR...FLOOD WATCH THIS AFTN THRU SAT EVE FOR LAWRENCE COUNTY.
JOHNSON

In the hours before

Local storm report, Aug 23, 3:37 PM CDT, 2 hours 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
237 PM MDT FRI AUG 23 2002

TIME(MDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1255 PM    ROCHFORD                  SD   .75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY STORM
                                          SPOTTER.

0231 PM    HILL CITY                 SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0234 PM    2 E HILL CITY             SD   1 INCH HAIL
08/23/02   PENNINGTON                     FOREST SERVICE

Local storm report, Aug 23, 3:59 PM CDT, 2 hours 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
259 PM MDT FRI AUG 23 2002

TIME(MDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0245 PM    3 E HILL CITY             SD   .75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY STORM
                                          SPOTTER.

0245 PM    HILL CITY                 SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY PUBLIC.

0250 PM    2 E HILL CITY             SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY STORM
                                          SPOTTER.

0257 PM    KEYSTONE                  SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

Local storm report, Aug 23, 4:08 PM CDT, 2 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
308 PM MDT FRI AUG 23 2002

TIME(MDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1255 PM    ROCHFORD                  SD   .75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY STORM
                                          SPOTTER.

0231 PM    HILL CITY                 SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0234 PM    2 E HILL CITY             SD   1 INCH HAIL
08/23/02   PENNINGTON                     FOREST SERVICE

0245 PM    3 E HILL CITY             SD   .75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY STORM
                                          SPOTTER.

0245 PM    HILL CITY                 SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY PUBLIC.

0245 PM    4 NE HILL CITY            SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY STORM
                                          SPOTTER.

0250 PM    2 E HILL CITY             SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY STORM
                                          SPOTTER.

0257 PM    KEYSTONE                  SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0305 PM    3 N KEYSTONE              SD   1 INCH HAIL
08/23/02   PENNINGTON                     FIRE FIGHER CREW ON
                                          BATTLE CREEK FIRE

Local storm report, Aug 23, 4:10 PM CDT, 2 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE RAPID CITY SD
310 PM MDT FRI AUG 23 2002

TIME(MDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0305 PM    3 N KEYSTONE              SD   1 INCH HAIL
08/23/02   PENNINGTON                     FIRE FIGHTER CREW ON
                                          BATTLE CREEK FIRE

Local storm report, Aug 23, 4:11 PM CDT, 2 hours 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
311 PM MDT FRI AUG 23 2002

TIME(MDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1255 PM    ROCHFORD                  SD   .75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY STORM
                                          SPOTTER.

0231 PM    HILL CITY                 SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0234 PM    2 E HILL CITY             SD   1 INCH HAIL
08/23/02   PENNINGTON                     FOREST SERVICE

0245 PM    3 E HILL CITY             SD   .75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY STORM
                                          SPOTTER.

0245 PM    HILL CITY                 SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY PUBLIC.

0245 PM    4 NE HILL CITY            SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY STORM
                                          SPOTTER.

0250 PM    2 E HILL CITY             SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY STORM
                                          SPOTTER.

0257 PM    KEYSTONE                  SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0305 PM    3 N KEYSTONE              SD   1 INCH HAIL
08/23/02   PENNINGTON                     FIRE FIGHTER CREW ON
                                          BATTLE CREEK FIRE

Local storm report, Aug 23, 4:25 PM CDT, 1 hour 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
325 PM MDT FRI AUG 23 2002

TIME(MDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0320 PM    1 W KEYSTONE              SD   1 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0320 PM    KEYSTONE                  SD   1.75 INCH HAIL
08/23/02   PENNINGTON                     REPORTED BY STORM
                                          SPOTTER.  GOLFBALL SIZE
                                          HAIL FROM 310 PM
                                          THROUGH 320 PM.

The office that day

Everything else NWS Rapid City, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 23, 12:59 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	46 min
Aug 23, 1:45 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	60 min
Aug 23, 3:04 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	56 min
Aug 23, 4:00 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	45 min
Aug 23, 5:43 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	47 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2002 Every 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.