Hail and Damaging Winds in South Dakota, July 19 to 20, 2001

Name: Hail and Damaging Winds in South Dakota, July 19 to 20, 2001
Start: 2001-07-19T17:30
End: 2001-07-20T08:35
Location: South Dakota

July 19 to 20, 2001 · NWS ABR · 18 events in 11 counties and zones

10 hail, 8 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

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 18

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 Aberdeen, SD wrote its last area forecast discussion before the first event at Jul 19, 2:40 PM CST, 2 hours 50 minutes earlier.

Area forecast discussion, Jul 19, 2:40 PM CST, 2 hours 50 minutes before

AREA FORECAST DISCUSSION FOR CENTRAL/NORTHCENTRAL AND NORTHEAST
SOUTH DAKOTA AND WEST CENTRAL MINNESOTA
NATIONAL WEATHER SERVICE ABERDEEN SD
300 PM CDT THU JUL 19 2001

LOOKS LIKE ANOTHER INTERESTING NIGHT ON TAP.  FOCUS FOR THIS PACKAGE
IS CONVECTION CHANCES AND EXTENT TONIGHT.  MODELS HAVING SOME
TROUBLE RESOLVING DETAILS.  SEVERAL THINGS ARE GIVEN...UPPER RIDGE
AXIS CURRENTLY OVER CENTRAL SOUTH DAKOTA.  MINOR WAVES ARE RIDING
THE WEST SIDE OF THIS FLOW.  WATER VAPOR SHOWS MINOR DISTURBANCE
CURRENTLY OVER WESTERN SOUTH DAKOTA.  VISIBLE SATELLITE SHOWING
CLOUDS FORMING IN THIS AREA.  THIS AREA HAS BOUNDARY LAYER LIFTED
INDEX VALUES OF -8.  CAPE VALUES ARE GREATER THAN 3K J/KG.
DEWPOINTS ARE NOT AS HIGH AS YESTERDAY BUT STILL IN THE 70S F.  LOW
LEVEL JET GETS ORGANIZED LATER TONIGHT AND FEEDS LIKELY AREA OF
CONVECTION.  WITH THUNDERSTORMS STARTING NOW IN THE WEST PART OF THE
AREA EXPECT STORMS TO CONTINUE THIS EVENING.  AGREE WITH SPC
DISCUSSION ABOUT STORMS LIKELY FORMING MCS THAT WILL FOLLOW THE
RIDGE TONIGHT.  WILL PUT IN ANOTHER CHANCE OF STORMS SATURDAY NIGHT
AS ANOTHER MID LEVEL WAVE MOVES OVER THE AREA.

.EXTENDED DISCUSSION...
THE STRONG UPPER RIDGE THAT HAS PLAGUED THE REGION WILL CONTINUE TO
DO SO THROUGH THE EXTENDED PERIOD. H5 HEIGHTS LOWER SOME ON THE
NORTH SIDE OF THE RIDGE DURING THE MID PART OF THE WEEK AS A SERIES
OF SHORTWAVES RIDES OVER THE RIDGE AND ACROSS THE NORTHERN PLAINS.
AT THIS TIME...IT APPEARS THE STRONGEST WAVES WILL TRACK THROUGH ON
TUESDAY AND WEDNESDAY...AT THE SAME TIME THAT A STATIONARY FRONT
SETS UP ACROSS SOUTHERN SOUTH DAKOTA AND NORTHERN NEBRASKA. HIGH
PRESSURE MOVES INTO 4THE AREA FOR THE LATTER PART OF THE WEEK. WILL
SEE SOME SLIGHT MODERATING TO THE TEMPS AS THE UPPER RIDGE DAMPENS
SOME...BUT EXPECT TEMPS TO STILL REMAIN NEAR OR ABOVE NORMAL.

.ABR...NONE.

KEEFE/PARKIN

In the hours before

Local storm report, Jul 19, 4:37 PM CST, 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN, SD
537 PM CDT THU JUL 19 2001

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

0855 PM    4.5 NE TOLSTOY            SD   TORNADO
07/18/01   EDMUNDS                        TORNADO DAMAGED A HOUSE
                                          AND SEVERAL OUTBUILDINGS

0910 PM    5 NW ONAKA                SD   TORNADO
07/18/01   FAULK                          REPORTED BY  PUBLIC

0855 PM    5 E HOVEN                 SD   TORNADO
07/18/01   POTTER

0903 PM    5 E HOVEN                 SD   2.75 INCH HAIL
07/18/01   POTTER                         IN EXTREME NE CORNER OF
                                          COUNTY

0915 PM    13 NW LOYALTON            SD   1.00 INCH HAIL
07/18/01   EDMUNDS

0919 PM    4 NW ONAKA                SD   TORNADO
07/18/01   FAULK

0915 PM    4 NE TOLSTOY              SD   1.75 INCH HAIL
07/18/01   POTTER

1030 PM    13 S BOWDLE               SD   1.00 INCH HAIL
07/18/01   EDMUNDS

1030 PM    4 NW ONAKA                SD   FLOOD
07/18/01   FAULK                          FLOODING OF COUNTY ROADS

1154 PM    KELDRON                   SD   60 MPH TSTM WIND GUST
07/18/01   CORSON

0150 AM    9W MOUND CITY             SD   60 MPH TSTM WIND GUST
07/19/01   CAMPBELL

1207 AM    3 SW MCINTOSH             SD   1.00 INCH HAIL
07/19/01   CORSON

1207 AM    3 SW MCINTOSH             SD   58 MPH TSTM WIND GUST
07/19/01   CORSON

0230 AM    10 NE MOUND CITY          SD   60 MPH TSTM WIND GUST
07/19/01   CAMPBELL

0335 AM    7 E LEOLA                 SD   60-70 MPH TSTM WIND GUST
07/19/01   MCPHERSON

0457 AM    REDFIELD                  SD   1.00 INCH HAIL
07/19/01   SPINK                          IN AND AROUND TOWN

1215 AM    1 SW MCINTOSH             SD   75 MPH TSTM WIND GUST
07/19/01   CORSON                         REPORTED BY SPOTTER

1235 AM    MCLAUGHLIN                SD   70 MPH TSTM WIND GUST
07/19/01   CORSON                         LAW ENFORCEMENT REPORTED
                                          SMALL TREES DOWN

1235 AM    MCLAUGHLIN                SD   1.00 INCH HAIL
07/19/01   CORSON                         LAW ENFORCEMENT REPORTED
                                          MOST WINDOWS OUT IN TOWN
                                          AND CARS

GS

The radar

The Aberdeen radar (KABR), 116 km away, was scanning. The volume nearest the first event began at 23:32 UTC.

Open the radar archive at this moment

Event by event

10 hail, 8 thunderstorm wind. Local standard time, as filed.

Hail, Walworth

When: July 19, 5:30 PM CST
Where: Walworth County, 9 mi SE of Selby
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.400, -99.900

Hail, Edmunds

When: July 19, 5:50 PM CST to 6:00 PM CST
Where: Edmunds County, 10 mi S of Bowdle
Measured: 1.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.300, -99.667

Hail, Faulk

When: July 19, 6:38 PM CST
Where: Faulk County, 14 mi NW of Faulkton
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.183, -99.333

Hail, Edmunds

When: July 19, 6:43 PM CST
Where: Edmunds County, 14 mi S of Roscoe
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.250, -99.350

Hail, Dewey

When: July 19, 8:10 PM CST
Where: Dewey County, Firesteel
Measured: 1 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.433, -101.283

Hail, Dewey

When: July 19, 8:10 PM CST
Where: Dewey County, Isabel
Measured: 0.88 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.383, -101.433

Thunderstorm Wind, Dewey

When: July 19, 8:20 PM CST
Where: Dewey County, Bear Creek
Measured: 52 kt (60 mph)
Reported by: AWOS,ASOS,MESONET,ETC
Coordinates: 45.067, -101.450

Thunderstorm Wind, Edmunds

When: July 19, 10:45 PM CST
Where: Edmunds County, 9 mi S of Roscoe
Measured: 61 kt (70 mph)
Reported by: EMERGENCY MANAGER
Coordinates: 45.317, -99.350

Seventy mph winds moved a garage off of its foundation and also downed many large tree branches.

Hail, Campbell

When: July 20, 3:00 AM CST
Where: Campbell County, 9 mi SE of Mound City
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.617, -99.933

Thunderstorm Wind, Campbell

When: July 20, 3:00 AM CST
Where: Campbell County, 9 mi SE of Mound City
Measured: 52 kt (60 mph)
Reported by: TRAINED SPOTTER
Coordinates: 45.617, -99.933

Sixty mph winds blew down many large tree branches.

Hail, Walworth

When: July 20, 3:05 AM CST
Where: Walworth County, 3 mi NE of Glenham
Measured: 0.88 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.567, -100.217

Thunderstorm Wind, Walworth

When: July 20, 3:45 AM CST
Where: Walworth County, 4 mi NE of Selby
Measured: 61 kt (70 mph)
Reported by: GENERAL PUBLIC
Coordinates: 45.533, -99.967

Seventy mph winds blew down many large tree branches.

Thunderstorm Wind, McPherson

When: July 20, 5:00 AM CST
Where: McPherson County, Leola
Measured: 52 kt (60 mph)
Reported by: LAW ENFORCEMENT
Coordinates: 45.717, -98.950

Sixty mph winds brought down some large tree branches.

Hail, Hand

When: July 20, 6:25 AM CST
Where: Hand County, 5 mi E of Miller
Measured: 0.88 in hail
Reported by: EMERGENCY MANAGER
Coordinates: 44.517, -98.883

Thunderstorm Wind, Brown

When: July 20, 6:35 AM CST
Where: Brown County, 4 mi SE of Houghton
Measured: 52 kt (60 mph)
Reported by: TRAINED SPOTTER
Coordinates: 45.733, -98.150

Thunderstorm Wind, Marshall

When: July 20, 6:37 AM CST
Where: Marshall County, 2 mi SW of Lake City
Measured: 56 kt (64 mph)
Reported by: TRAINED SPOTTER
Coordinates: 45.700, -97.450

High winds brought down a large oak tree at Roy Lake along with many tree branches.

Hail, Spink

When: July 20, 7:25 AM CST
Where: Spink County, 4 mi S of Conde
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.100, -98.100

Thunderstorm Wind, Clark

When: July 20, 8:35 AM CST
Where: Clark County, 4 mi S of Garden City
Measured: 56 kt (64 mph)
Reported by: TRAINED SPOTTER
Coordinates: 44.900, -97.567

Strong winds brought down many large tree branches.

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

Every storm in South Dakota in 2001 Every state in 2001 This day in weather history Warnings in South Dakota, July 2001

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 2026-10-01. Each event’s entry at NCEI: 5261474, 5261471, 5261473, 5261472, 5261475, 5261553, 5261476, 5261552, 5261545, 5261546, 5261547, 5261548, 5261477, 5261549, 5261544, 5261550, 5261551, 5261554.