South Dakota, 2002

Hail and Damaging Wind in South Dakota, August 11, 2002

August 11, 2002 · NWS UNR · 2 events in 1 county or zone

1 hail, 1 thunderstorm wind, as filed by the National Weather Service.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
$3,000
Crop damage
None recorded
Events
2

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What forecasters said that day

The local office's own words before the first event, 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 the first event at Aug 11, 1:30 PM MST, 4 hours 30 minutes earlier.

Area forecast discussion, Aug 11, 1:30 PM MST, 4 hours 30 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
230 PM MDT SUN AUG 11 2002

LATEST SFC ANALYSIS PLACES COLD FRONT ALONG KBIS-KD07-KRCA LINE.
SATELLITE INDC A NARROW LINE OF MID-LEVEL CLOUDS ALONG FRONT AND
SOME CONVECTION ALONG THE PRE-FRONTAL TROF IN N-CENT SD. KUDX RADAR
INDC LINE OF TSTMS MOVING INTO WRN WATCH BOX IN CENT SD ATTM. AND
WARNINGS ARE BEGINNING TO BE ISSUED. SUFFICIENT SHEAR AND
INSTABILITY EXISTS OVER ERN ZONES TO SUPPORT ISOLD SEVERE TSTMS.

12Z MODELS INITIALIZE WELL AND SHOW GOOD AGREEMENT. WILL EXPECT ERN
HALF OF CWFA TO RECEIVE ISOLD TSTM ACTIVITY REMAINDER OF THIS
AFTERNOON AND EVE AS COLD FRONT PUSHES ACROSS VERY UNSTABLE AND
ADEQUATELY MOIST ATMO. TO THE WEST WILL EXPECT SCT EVE SHRA AS UPPER
JET DYNAMICS INTERACT TO ENHANCE OMEGA FIELDS OVER NE WY AND WRN SD
THROUGH 06Z MON. ROBUST CAA OVERNIGHT AND INCREASING WINDS WILL MAKE
FOR WINDY NIGHT AS CLOUDS QUICKLY CLEAR OUT. MON THRU EXTENDED
PERIODS WILL SEE NW ZONAL FLOW ALOFT. NO REAL TEMP ADVECT PATTERN
GETS ESTABLISHED...BUT WE WILL REMAIN IN COLD AIR SECTOR FOR MOST OF
THE WEEK. OF COURSE WITH FEW CLOUDS...AUGUST SUNSHINE WILL WARM US
UP INTO THE 80S BY MID WEEK. WEAK WAVES EXPECTED IN NW FLOW...BUT
SHOULD REMAIN WELL N AND E OF CWFA THROUGH THE WEEK.

MODEL GUIDANCE LOOKS GOOD AND HAVE STAYED CLOSE THROUGH EXTENDED
PERIODS.

.UNR...NONE.

99

In the hours before

Local storm report, Aug 11, 4:08 PM MST, 1 hour 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
508 PM MDT SUN AUG 11 2002

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

0223 PM    DUPREE                    SD   .88 INCH HAIL
08/11/02   ZIEBACH                        REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL

0240 PM    5 E DUPREE                SD   1 INCH HAIL
08/11/02   ZIEBACH                        REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL

WFO UNR STAFF

The radar

The North Platte radar (KLNX), 191 km away, was scanning. The volume nearest the first event began at 00:59 UTC.

Open the radar archive at this moment

Event by event

1 hail, 1 thunderstorm wind. Local standard time, as filed.

Hail, Tripp

When
August 11, 6:00 PM MST
Where
Tripp County, 10 mi NW of Ideal
Measured
0.88 in hail
Reported by
TRAINED SPOTTER
Coordinates
43.633, -100.033

Thunderstorm Wind, Tripp

When
August 11, 6:28 PM MST
Where
Tripp County, 11 mi SE of Hamill
Measured
52 kt (60 mph)
Property damage
$3,000
Reported by
TRAINED SPOTTER
Coordinates
43.467, -99.533

Severe thunderstorm wind gusts damaged a roof.

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in South Dakota in 2002Every state in 2002This day in weather historyWarnings in South Dakota, August 2002

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5310706, 5310707.