Hail and Damaging Winds in South Dakota, August 26, 2024

Name: Hail and Damaging Winds in South Dakota, August 26, 2024
Start: 2024-08-26T13:33
End: 2024-08-26T19:35
Location: South Dakota

August 26, 2024 · NWS UNR · 20 events in 7 counties and zones

A line of severe thunderstorms developed as they moved into southwest South Dakota. These storms produced wind gusts to over 70 mph, along with embedded areas of hail, as they tracked through southwest and south-central South Dakota.

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: 20

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 happened

The episode as NWS UNR wrote it up.

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 26, 1:21 PM MST, 12 minutes earlier. Its key messages:

A storm system will bring thunderstorms to the area, mainly this afternoon and evening. Some storms could be severe, with large hail, damaging winds, and heavy rainfall.
Mostly dry the rest of the week with near to above average temperatures. Elevated fire weather conditions mid to late week.

Area forecast discussion, Aug 26, 1:21 PM MST, 12 minutes before

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
221 PM MDT Mon Aug 26 2024

.KEY MESSAGES...

- A storm system will bring thunderstorms to the area, mainly this
  afternoon and evening. Some storms could be severe, with large
  hail, damaging winds, and heavy rainfall.

- Mostly dry the rest of the week with near to above average
  temperatures. Elevated fire weather conditions mid to late week.

&&

.DISCUSSION...(This Evening Through Monday)
Issued at 119 PM MDT Mon Aug 26 2024

An upper trough crossing the area has triggered a N-S oriented
line of showers and thunderstorms over northeastern WY already
this afternoon. The convection is expected to continue to increase
in intensity as it shifts eastward into an area of better
instability (SBCAPE 1000-1500 J/KG) near the WY/SD border. So far,
heating has been limited by cloud cover over much of western
South Dakota. This might limit the extent of the wind threat
somewhat over western SD, however the 18Z Rapid City sounding
shows 51kts of 0-6km shear to the east of the Black Hills so the
potential still exists for very large hail and severe gusts as the
line of convection crosses the area during the rest of the
afternoon and evening, especially from the Black Hills, extending
through southwestern and south central South Dakota. With PWATs
150-175% of normal, storms could bring periods of locally intense
rainfall.

The trough will push off to the east of the forecast area late
this evening, with subsidence taking over and precip ending.
Surface high pressure sets up on Tuesday, with near average
temperatures. Return flow develops Tuesday night. A broad upper
low then moves eastward near the MT/Canadian border on Wednesday,
along with a surface low and cold front. This may bring some
afternoon thunderstorms. Thursday will be cooler, but then warm
air is progged to advect back in for the weekend, resulting in
above average temperatures.

&&

.AVIATION...(For the 18Z TAFS Through 18Z Tuesday)
Issued At 119 PM MDT Mon Aug 26 2024

A squall line of strong/severe thunderstorms (with large hail and
damaging wind gusts) will develop after 18Z over northeastern
Wyoming and will cross western South Dakota from 20Z to 05Z
this afternoon and evening. AREAS MVFR/LCL IFR conditions in low
stratus are then possible over western South Dakota during the
rest of the night. Conditions will gradually improve to VFR after
sunrise on Tuesday morning.

&&

.FIRE WEATHER...
Issued At 119 PM MDT Mon Aug 26 2024

A strong storm system will bring thunderstorms to northeastern WY
and western/central SD this afternoon and evening. Wetting rains
are expected. Cooler, near average temperatures are expected
Tuesday, but southerly flow will develop over northeastern WY,
which will result in minimum relative humidities of 15 to 20
percent. Winds will be 5 to 10 mph, so critical fire weather is
not expected. However, elevated fire weather concerns are expected
Tuesday and will continue through the rest of the week across the
area.

&&

.UNR WATCHES/WARNINGS/ADVISORIES...
SD...None.
WY...None.
&&

DISCUSSION/KEY MESSAGES...10
AVIATION...10
FIRE WEATHER...10

Hazardous weather outlook, Aug 26, 3:21 AM MST, 10 hours 12 minutes before

Hazardous Weather Outlook
National Weather Service Rapid City SD
421 AM MDT Mon Aug 26 2024

SDZ046-047-049-271300-
Mellette-Todd-Tripp-
521 AM CDT Mon Aug 26 2024

This Hazardous Weather Outlook is for portions of south central
South Dakota.

.DAY ONE...Today and Tonight

There is an enhanced risk (level 3 of 5) of severe thunderstorms
today, meaning that numerous severe storms are possible. Primary
hazards include very large hail and strong, damaging wind gusts.
An isolated tornado may occur. The most likely time for severe
thunderstorms will be 200 PM to 1000 PM.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There is a marginal risk (level 1 of 5) of severe thunderstorms
Wednesday afternoon and evening with large hail and damaging winds
possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

SDZ012>014-024>032-041>044-072>078-WYZ054>060-271300-
Butte-Northern Meade Co Plains-Ziebach-Northern Black Hills-
Northern Foothills-Rapid City-Southern Foothills-
Central Black Hills-Southern Black Hills-Custer Co Plains-
Pennington Co Plains-Haakon-Western Fall River-
Northern Oglala Lakota-Northern Jackson-Bennett-
Sturgis/Piedmont Foothills-Southern Meade Co Plains-
Hermosa Foothills-Eastern Fall River-Southern Oglala Lakota-
Southern Jackson-Southern Perkins-Northern Campbell-
Southern Campbell-Western Crook-Wyoming Black Hills-
Weston County Plains-Newcastle-Northeastern Crook-
421 AM MDT Mon Aug 26 2024

This Hazardous Weather Outlook is for portions of western South
Dakota and northeastern Wyoming.

.DAY ONE...Today and Tonight

There is a slight risk (level 2 of 5) of severe thunderstorms
today, meaning that scattered severe storms are possible. Primary
hazards include large hail and damaging winds. The most likely
time for severe thunderstorms will be noon to 600 PM for
northeastern Wyoming and far western South Dakota, and 200 PM to
1000 PM east of the Black Hills.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There is a marginal risk (level 1 of 5) of severe thunderstorms
east of the Black Hills Wednesday afternoon and evening with
large hail and damaging winds possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

SDZ001-002-271300-
Harding-Northern Perkins-
421 AM MDT Mon Aug 26 2024

This Hazardous Weather Outlook is for portions of northwestern
South Dakota.

.DAY ONE...Today and Tonight

There is a marginal risk (level 1 of 5) of severe thunderstorms
today, meaning that isolated severe storms are possible. Primary
hazards include large hail and damaging winds. The most likely
time for severe thunderstorms will be noon to 600 PM.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Thunderstorms are possible Wednesday afternoon and evening, but
organized severe thunderstorms are not anticipated.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

In the hours before

Local storm report, Aug 26, 8:24 AM MST, 5 hours 9 minutes before

Preliminary Local Storm Report
National Weather Service Rapid City SD
924 AM MDT Mon Aug 26 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0520 PM     Tstm Wnd Gst     12 NE Wewela            43.11N  99.60W
08/25/2024  E60 mph          Tripp              SD   Public

0520 PM     Tstm Wnd Dmg     12 NE Wewela            43.11N  99.60W
08/25/2024                   Tripp              SD   Public

            Damage to crops and structures due to wind driven hail.

0520 PM     Hail             12 NE Wewela            43.11N  99.60W
08/25/2024  E1.00 inch       Tripp              SD   Public

            Hail lasted about 15 minutes

0530 PM     Hail             12 NE Wewela            43.11N  99.60W
08/25/2024  E1.00 inch       Tripp              SD   Public

0800 AM     Rain             12 WNW Philip           44.08N 101.91W
08/26/2024  M1.02 inch       Haakon             SD   CoCoRaHS

            24-hour rainfall.

&&

MLS

Local storm report, Aug 26, 8:25 AM MST, 5 hours 8 minutes before

Preliminary Local Storm Report
National Weather Service Rapid City SD
925 AM MDT Mon Aug 26 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0925 AM     Rain             9 WSW Red Elm           44.99N 101.96W
08/26/2024  M1.40 inch       Ziebach            SD   Trained Spotter

&&

DYE

Local storm report, Aug 26, 12:43 PM MST, 50 minutes before

Preliminary Local Storm Report
National Weather Service Rapid City SD
143 PM MDT Mon Aug 26 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0130 PM     Tstm Wnd Gst     19 SW Upton             43.93N 104.92W
08/26/2024  M69 mph          Weston             WY   Mesonet

&&

MLS

Local storm report, Aug 26, 1:10 PM MST, 23 minutes before

Preliminary Local Storm Report
National Weather Service Rapid City SD
210 PM MDT Mon Aug 26 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0200 PM     Tstm Wnd Gst     12 W Upton              44.11N 104.88W
08/26/2024  E60 mph          Weston             WY   Trained Spotter

&&

MLS

Local storm report, Aug 26, 1:13 PM MST, 20 minutes before

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Local storm report, Aug 26, 1:21 PM MST, 12 minutes before

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The radar

The Rapid City radar (KUDX), 133 km away, was scanning. The volume nearest the first event began at 20:32 UTC.

Open the radar archive at this moment

Event by event

13 thunderstorm wind, 7 hail. Local standard time, as filed.

Thunderstorm Wind, Fall River

When: August 26, 1:33 PM MST
Where: Fall River County, 9.55 mi W of Edgemont
Measured: 61 kt (70 mph) measured gust
Reported by: Mesonet
Coordinates: 43.300, -104.020

Thunderstorm Wind, Custer

When: August 26, 1:45 PM MST
Where: Custer County, 10.51 mi W of Jewel Cave Natl Mon
Measured: 52 kt (60 mph) measured gust
Reported by: Mesonet
Coordinates: 43.720, -104.040

Thunderstorm Wind, Fall River

When: August 26, 1:50 PM MST
Where: Fall River County, 15.13 mi NW of Edgemont
Measured: 61 kt (70 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 43.470, -104.020

The spotter estimated wind gusts at near 70 mph.

Hail, Custer

When: August 26, 2:13 PM MST
Where: Custer County, Custer
Measured: 1 in hail
Reported by: Public
Coordinates: 43.770, -103.600

Hail, Custer

When: August 26, 2:28 PM MST
Where: Custer County, 9.77 mi WNW of Fairburn
Measured: 0.88 in hail
Reported by: Fire Department/Rescue
Coordinates: 43.760, -103.380

Hail, Custer

When: August 26, 2:42 PM MST
Where: Custer County, 5 mi NW of Fairburn
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 43.741, -103.281

Hail, Pennington

When: August 26, 2:49 PM MST
Where: Pennington County, 3 mi WSW of Rapid City
Measured: 0.75 in hail
Reported by: Storm Chaser
Coordinates: 44.063, -103.286

Hail, Custer

When: August 26, 2:50 PM MST
Where: Custer County, Hermosa
Measured: 2 in hail
Reported by: Public
Coordinates: 43.840, -103.190

Thunderstorm Wind, Fall River

When: August 26, 2:50 PM MST
Where: Fall River County, 6 mi WSW of Smithwick
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 43.267, -103.330

Wind gusts were estimated at 60 mph.

Thunderstorm Wind, Fall River

When: August 26, 3:18 PM MST to 3:23 PM MST
Where: Fall River County, 11.61 mi E of Oelrichs
Measured: 63 kt (72 mph) measured gust
Reported by: Mesonet
Coordinates: 43.190, -103.000

Thunderstorm Wind, Oglala Lakota

When: August 26, 4:00 PM MST
Where: Oglala Lakota County, Sharps Corner
Measured: 61 kt (70 mph) estimated gust
Reported by: Public
Coordinates: 43.380, -102.400

Wind gusts were estimated at 70 mph.

Thunderstorm Wind, Oglala Lakota

When: August 26, 4:02 PM MST
Where: Oglala Lakota County, 6 mi SE of Oglala
Measured: 61 kt (70 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 43.119, -102.666

The spotter estimated wind gusts at around 60 mph.

Hail, Oglala Lakota

When: August 26, 4:25 PM MST
Where: Oglala Lakota County, 2 mi SSE of Kyle
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 43.393, -102.165

Thunderstorm Wind, Oglala Lakota

When: August 26, 4:25 PM MST
Where: Oglala Lakota County, 2 mi SSE of Kyle
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 43.393, -102.165

Wind gusts were estimated at 60 mph.

Hail, Bennett

When: August 26, 5:30 PM MST
Where: Bennett County, Martin
Measured: 1 in hail
Reported by: Emergency Manager
Coordinates: 43.170, -101.730

Thunderstorm Wind, Bennett

When: August 26, 5:30 PM MST
Where: Bennett County, Martin
Measured: 61 kt (70 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 43.170, -101.730

Wind driven hail broke windows at 3 houses near the junction of highways 18 and 73 in Martin.

Thunderstorm Wind, Bennett

When: August 26, 5:35 PM MST
Where: Bennett County, 5 mi ENE of Martin
Measured: 56 kt (64 mph) measured gust
Reported by: Mesonet
Coordinates: 43.198, -101.638

Thunderstorm Wind, Bennett

When: August 26, 6:00 PM MST
Where: Bennett County, 3 mi NNE of Harrington
Measured: 54 kt (62 mph) measured gust
Reported by: Mesonet
Coordinates: 43.210, -101.247

Thunderstorm Wind, Mellette

When: August 26, 7:00 PM CST
Where: Mellette County, 4 mi WNW of Cedar Butte
Measured: 50 kt (58 mph) measured gust
Reported by: Mesonet
Coordinates: 43.602, -101.094

Thunderstorm Wind, Todd

When: August 26, 7:35 PM CST
Where: Todd County, 6.87 mi ESE of Rosebud
Measured: 63 kt (72 mph) measured gust
Reported by: Mesonet
Coordinates: 43.200, -100.720

What these are

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.
Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

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

The same day elsewhere

Every storm in South Dakota in 2024 Every state in 2024 This day in weather history Warnings in South Dakota, August 2024

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 2026-09-30. Each event’s entry at NCEI: 1204602, 1204598, 1204606, 1204608, 1204609, 1204611, 1204615, 1204613, 1204616, 1204619, 1204621, 1204626, 1204627, 1204630, 1204635, 1204639, 1204641, 1204644, 1204648, 1204650.