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NOAA/NWS STORM PREDICTION CENTER REPORTS + U.S. CENSUS DATA

Hail, Wind & Tornado Reports in Walworth County, SD

Public hail, wind, and tornado reports across Walworth County, SD from April 19, 1955 through August 31, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 57601 — search hail, wind and tornado public reports for any U.S. ZIP code 
Hail Reports
179
Wind Reports
198
Tornado Reports
28
Max Hail Size
3.00″
Source  NOAA SPC · NWS Local Storm Reports Coverage  Walworth County, SD · 1955–present Updated  Daily · last Aug 31, 2026

Latest NWS Hail Reports in Walworth County

30 reports
Free hail report for your home →
1.50″ hail
Aug 29, 2026
10:50 PM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: Hail was a varity of sized_ from pea all the way up to ping pong ball sized.
NWS Hail Report Location: 9 Sw Bowdle, SD
1.50″ hail
Aug 29, 2026
10:30 PM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 5 Sw Bowdle, SD
1.00″ hail
Aug 25, 2026
12:45 AM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2 Sse Glenham, SD
1.00″ hail
Jul 8, 2026
1:52 AM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: Report of Quarter Sized Hail in Selby sent via Facebook.
NWS Hail Report Location: Selby, SD
1.00″ hail
Jun 2, 2026
10:17 PM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: Estimated nickel to quarter size hail.
NWS Hail Report Location: 2 N Hoven, SD
1.00″ hail
Aug 13, 2025
2:38 PM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: Nickel to quarter sized hail.
NWS Hail Report Location: 6 NNE Lowry, SD
1.00″ hail
Aug 6, 2025
1:50 AM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: penny to quarter size hail.
NWS Hail Report Location: 6 W Hoven, SD
1.00″ hail
Jun 22, 2025
7:34 AM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: Report from mPING: Quarter (1.00 in.). Time estimated by Radar.
NWS Hail Report Location: Mobridge, SD
1.75″ hail
Jul 30, 2023
4:00 PM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: Ping pong to golfball sized hail via Facebook.
NWS Hail Report Location: Akaska, SD
1.00″ hail
Jul 30, 2023
3:28 PM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Mobridge Municipal Airp, SD
1.00″ hail
Jun 25, 2022
12:10 AM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: NEW EVARTS... SD.
NWS Hail Report Location: 7 S Glenham, SD
2.50″ hail
Aug 29, 2021
7:32 AM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: NUMEROUS HAILSTONES UP TO TENNIS BALL SIZED AND DECREASED TO GOLF BALL SIZED BEFORE ENDING. GROUND WAS WHITE WITH HAIL.
NWS Hail Report Location: 5 N Lowry, SD
1.00″ hail
Aug 29, 2021
6:56 AM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3 NNE Selby, SD
1.25″ hail
Aug 29, 2021
6:35 AM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Glenham, SD
1.00″ hail
Jul 26, 2021
1:30 PM UTC
Hail report for Walworth County, SD
Walworth County · 2,321 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Glenham, SD
Showing 15 of 30
Hail Damage Risk for Your Home +

Hail reports describe hail by diameter, often comparing stone size to familiar objects like peas, quarters, golf balls, and softballs. Use this guide as a starting point for possible hail damage to your roof, siding, gutters, vents, windows, and exterior. Actual hail damage depends on hail hardness, density, wind speed, impact angle, roof age, shingle condition, roof pitch, roofing material, installation quality, and prior storm damage.

Pea
0.25″
Low

Usually too small to cause hail damage to most sound asphalt roofs, siding, or gutters.

Mothball
0.50″
Sub-Severe Watch

Below the NWS severe-hail threshold, but not always harmless. Repeated small hail can scuff surfaces, wear aging shingles, and loosen protective granules over time.

Penny
0.75″
Minor / Watch

Below the NWS severe-hail threshold, but roof hail damage is still possible on older, brittle, poorly installed, or previously damaged shingles. May also mark screens, vents, gutters, and soft metal.

Nickel
0.88″
Minor / Watch

Still below the severe-hail threshold, but large enough to leave visible marks on soft metal and add wear to older or hail-weakened roof shingles.

Quarter
1.00″
Watch

The NWS severe-hail threshold. Quarter-size hail can bruise shingles, dent soft metal, and create roof hail damage worth checking.

Half Dollar
1.25″
Watch

More likely to dent gutters, vents, flashing, and siding. Hail damage risk rises quickly on older roofs or hail-weakened shingles.

Ping Pong / Walnut
1.50″
Likely

Hail damage becomes more likely, including bruised shingles, granule loss, dented siding, and damaged roof vents.

Golf Ball
1.75″
Likely

Often causes roof hail damage, cracked shingles, dented gutters, damaged flashing, and siding impacts. A roof inspection is recommended.

Hen Egg
2.00″
Serious

Can crack or puncture shingles, expose mat, dent siding, and cause widespread hail damage across the roof and exterior.

Tennis Ball
2.50″
Serious

Can cause heavy roof hail damage, punctured siding, broken skylights, damaged vents, and widespread exterior damage.

Baseball
2.75″
Major

Major hail damage is likely, including severe roof impacts, damaged siding, broken windows, and possible major roof repairs.

Tea Cup / Large Apple
3.00″
Major

Can cause heavy hail damage across the roof, siding, gutters, windows, and exterior. Significant repairs are often needed.

Softball
4.00″
Extreme

Destructive hail damage. Can severely damage roofing materials, siding, windows, gutters, vents, vehicles, and exterior surfaces.

Grapefruit
4.50″
Extreme

Catastrophic hail damage risk for roofs, windows, vehicles, siding, gutters, and exterior surfaces.

Source: NOAA / National Weather Service hail size references are used for hail-size comparisons and the 1.00″ severe-hail threshold. Damage descriptions are general homeowner guidance, not official NOAA/NWS damage ratings. Sub-severe hail under 1.00″ is below the severe threshold, but that does not mean “no roof damage.” Penny- to nickel-size hail can still contribute to granule loss, cosmetic surface marks, and added wear, especially on older, brittle, poorly installed, or previously damaged roofs.

Latest NWS Wind Reports in Walworth County

30 reports
Free hail report + wind check →
60 mph
Aug 31, 2026
1:19 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: Spotter estimated 50-60 mph gusts.
NWS Wind Report Location: 3 Ne Mobridge Municipal, SD
67 mph
Jul 26, 2026
12:35 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 4 Se Glenham, SD
UNK mph
Jul 26, 2026
12:30 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: Deputy Sheriff reported that power poles and branches had been damaged due to thunderstorm winds. Winds also blew a semi off the overpass. Time estimated.
NWS Wind Report Location: Selby, SD
64 mph
Jul 20, 2026
1:41 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: ASOS station KMBG Mobridge Muni AP.
NWS Wind Report Location: Mobridge Municipal Airp, SD
UNK mph
Jul 20, 2026
1:40 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: Reports of a few snapped trees and a snapped power pole_ as well as some minor tree damage from the winds. Time estimated by Radar.
NWS Wind Report Location: Mobridge, SD
58 mph
Jul 20, 2026
1:34 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: Ambient weather station 1.5 NE Mobridge reported a 58 mph gust.
NWS Wind Report Location: 1 Nw Mobridge Municipal, SD
72 mph
Jul 8, 2026
1:05 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: Personal weather station recorded a 72 mile per hour gust in Akaska.
NWS Wind Report Location: Akaska, SD
59 mph
Jun 28, 2026
3:59 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: From the SDDOT site.
NWS Wind Report Location: 5 SE Selby, SD
63 mph
Jun 15, 2026
6:39 PM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: ASOS station KMBG Mobridge Muni AP.
NWS Wind Report Location: Mobridge Municipal Airp, SD
60 mph
Jun 8, 2026
6:40 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: Mesonet station 313 Selby 5SE (SDDOT).
NWS Wind Report Location: 5 SW Java, SD
58 mph
Apr 23, 2026
4:15 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: Mesonet station 313 Selby 5SE (SDDOT).
NWS Wind Report Location: 5 SW Java, SD
68 mph
Apr 23, 2026
2:19 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: Mesonet station 313 Selby 5SE (SDDOT).
NWS Wind Report Location: 5 SW Java, SD
67 mph
Apr 23, 2026
2:09 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: Mesonet station 313 Selby 5SE (SDDOT).
NWS Wind Report Location: 5 SW Java, SD
62 mph
Apr 23, 2026
1:49 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: Mesonet station 313 Selby 5SE (SDDOT).
NWS Wind Report Location: 5 SW Java, SD
70 mph
Apr 23, 2026
1:45 AM UTC
Wind report for Walworth County, SD
Walworth County · 2,321 Homes in County
Wind Report Description: Mesonet station 209 Lowry (SDDOT).
NWS Wind Report Location: 4 ESE Akaska, SD
Showing 15 of 30
Wind Damage Risk for Your Home +

Storm reports list thunderstorm wind gusts in mph. The NWS marks storms as severe at 58+ mph, but wind damage to your home depends on roof age, shingle condition, installation, exposure, nearby trees, and prior hail or wind damage.

Below Severe
Under 58 mph
Minor

Usually little damage to a sound roof, but loose shingles, flashing, or debris may shift.

Severe
58–74 mph
Watch

Can loosen shingles, lift flashing, break limbs, and damage gutters, siding, fences, or trim.

Damaging
75–90 mph
Serious

Can peel shingles, damage vents, tear siding, rip gutters, and expose weak roof areas.

Extreme
90+ mph
Major

Can cause major roof covering loss, tree damage, broken windows, and structural damage.

Source: NOAA / National Weather Service storm reports. Gusts may be measured or estimated; actual wind damage varies by roof condition, exposure, and prior hail or wind damage.

Latest NWS Tornado Reports in Walworth County

28 reports
UNK category
Sep 14, 2025
5:43 PM UTC
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: Report on social media of SUV with trailer flipped on highway 12 and powerlines down from tornado East of Mobridge. Time estimated by radar.
NWS Tornado Report Location: 3 ENE Indian Creek Rec, SD
UNK category
Jun 2, 2018
12:36 AM UTC
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: LAW ENFORCEMENT RELAYED A PUBLIC REPORT OF A BRIEF TORNADO NORTHEAST OF GLENHAM.
NWS Tornado Report Location: Glenham, SD
EF0 category
Jul 26, 2011
6:05 PM CST-6
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: A tornado touched down briefly northeast of Hoven in an open field with no damage occurring.
NWS Tornado Report Location: 12.38 ESE Lowry, SD
EF2 category
May 22, 2010
5:21 PM CST-6
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: The third tornado formed about four miles west of Bowdle on Highway 12. The tornado came down on a farm or formed immediately to the south of the farm. Several outbuildings were severely damaged with the residence sustaining siding and roof damage. A stock trailer was thrown about 75 yards from its initial point. Tree damage was sustained on the west side of the property with fallen trees leaning west. On the east side of the property, debris was scattered to the northeast. The damage on the farm was consistent with an EF2 rating with wind speeds ranging from 111 to 135 mph. The tornado continued moving northeast crossing into western Edmunds county where it intensified to an EF4.
NWS Tornado Report Location: 8.2 ESE Java, SD
EF1 category
May 22, 2010
5:16 PM CST-6
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: The second tornado touched down eight miles west of Bowdle or two miles south of Highway 12 near State Highway 47. The tornado knocked down six wooden power poles before it lifted. This is consistent with an EF1 rating with winds from 86 to 110 mph.
NWS Tornado Report Location: 7.28 SE Java, SD
EF0 category
May 22, 2010
4:31 PM CST-6
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: The first confirmed tornado touchdown was three miles south of Akaska. This was a brief touchdown with no damage reported.
NWS Tornado Report Location: 2.87 S Akaska, SD
EF0 category
Jun 16, 2009
1:02 PM CST-6
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: A tornado touched down briefly in an open field with no damage occurring.
NWS Tornado Report Location: 6.36 ENE Lowry, SD
EF0 category
Aug 10, 2007
8:25 PM CST-6
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: A tornado touched down west of Hoven with no damage occurring.
NWS Tornado Report Location: 7.59 SE Lowry, SD
EF0 category
Jun 17, 2007
7:50 PM CST-6
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: A tornado touched down briefly in an open field with no damage reported.
NWS Tornado Report Location: 6.86 NW Akaska, SD
EF0 category
Jun 17, 2007
7:47 PM CST-6
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: A tornado damaged two pole barns and broke two windows out of two vehicles. Also, some large cottonwood trees were damaged.
NWS Tornado Report Location: 8.27 E Java, SD
EF0 category
Jun 17, 2007
7:42 PM CST-6
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: A tornado touched down briefly in an open field with no damage reported.
NWS Tornado Report Location: 10.34 ESE Java, SD
EF0 category
Jun 17, 2007
7:40 PM CST-6
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: A weak tornado touched down briefly in an open field with no damage found.
NWS Tornado Report Location: 7.12 ENE Lowry, SD
F0 category
Jul 3, 1995
6:20 PM CST
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: A brief touchdown of a narrow path tornado occurred one mile north of Lake Molstad and then dissipated.
NWS Tornado Report Location: NE Mobridge, SD
F0 category
Jun 6, 1994
2:45 PM CDT
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Near Java, SD
F0 category
Jul 21, 1991
7:07 PM CST
Tornado report for Walworth County, SD
Walworth County · 2,321 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, SD
Showing 15 of 28
Tornado Damage Risk for Your Home +

After a tornado, the National Weather Service assigns an EF rating from EF0 to EF5 based on surveyed damage. The rating estimates wind speed from what the tornado damaged, so actual damage can vary by construction quality, roof age, garage doors, windows, trees, debris, and how close the home was to the tornado path.

EF0
65–85 mph
Light

Can peel shingles, damage gutters or siding, break tree limbs, and toss loose outdoor items.

EF1
86–110 mph
Moderate

Can strip roof covering, damage exterior doors, break windows, snap trees, and cause heavier siding or gutter damage.

EF2
111–135 mph
Serious

Can tear off large sections of roofing, break or uproot trees, destroy weaker structures, and cause major exterior damage.

EF3–EF5
136+ mph
Severe

Can remove roofs and walls, destroy large portions of homes, toss vehicles, and cause severe to total destruction near the path.

Source: NOAA / National Weather Service. EF ratings are assigned after a post-storm damage survey and are based on observed damage, not a direct measurement at every home.

NWS Hail, Wind and Tornado Reports in Walworth County on the Interactive Map

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Browse Cities with NWS Storm Reports in Walworth County

Mobridge, SD 117
Hail, wind & tornado reports
Selby, SD 83
Hail, wind & tornado reports
Java, SD 61
Hail, wind & tornado reports
Lowry, SD 55
Hail, wind & tornado reports
Glenham, SD 42
Hail, wind & tornado reports
Akaska, SD 34
Hail, wind & tornado reports

NWS Storm Reports & Census Data

U.S. Census Data · County

Walworth County, SD area census snapshot

People & households
Population5,298
Households2,396
Housing units2,941
Income
Median household income$62,722
$100k+ households37.6%
$150k+ households16.3%
Housing stock
Single-family detached2,321
Attached single-family6
Small multifamily144
Large multifamily109
Mobile homes361
Housing mix
Single-family share78.9%
Attached-home share0.2%
Multifamily share8.6%
Mobile-home share12.3%
Ownership & occupancy
Owner-occupied1,779
Renter-occupied617
Vacant units545
Home value & age
Median home value$130,000
Owner homes $300k+16.6%
Owner homes $500k+5.7%
Owner homes $750k+1.5%
Median year built1966
Older-home share70.8%
Vehicle context
Households with cars2,289
Free hail maps

This snapshot is for local area context only and describes the selected state, county, city, or ZIP area — not a specific home or property. For ZIP-level estimated hail impact, use Free Hail Maps to generate a hail report with key impact details for that ZIP.

Top ZIP Codes with NWS Storm Reports in Walworth County

57601 159
Mobridge, SD Hail, wind & tornado reports
57472 121
Selby, SD Hail, wind & tornado reports
57428 96
Bowdle, SD Hail, wind & tornado reports
57450 70
Hoven, SD Hail, wind & tornado reports
57452 64
Java, SD Hail, wind & tornado reports
57631 59
Glenham, SD Hail, wind & tornado reports
57420 23
Akaska, SD Hail, wind & tornado reports

Get a Remote Hail Inspection

Not sure if hail may have affected your home in Walworth County? Ask a local pro for a Remote Hail Inspection. They can review hail activity for your property and help you decide whether an in-person roof or exterior inspection makes sense.

Frequently asked questions

for homeowners, buyers & sellers
How many hail, wind, and tornado reports does Walworth County have on record?

Our records show 179 hail, 198 wind, and 28 tornado reports in Walworth County, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on August 31, 2026.

What is the largest hail ever reported in Walworth County?

The largest hail size in these storm-report records in Walworth County is 3.00″. It was reported near Hoven, SD on August 23, 2018.

A storm report showed up near my home in Walworth County — does that mean my roof is damaged?

Not necessarily. A storm report only means hail, wind, or a tornado was observed nearby; it does not confirm damage at any specific address, and conditions change from block to block. Check an address-level hail report first, and if it looks significant, find a local pro that serves Walworth County and ask about a Remote Hail Inspection before anyone climbs on the roof.

I am buying a home in Walworth County — why should I look at its storm history?

Recent hail or wind can leave a roof or exterior with damage that is easy to miss during a walkthrough, and a recent roof replacement is sometimes an insurance job after a storm. Reviewing the storm history for a Walworth County address before closing helps you ask informed questions about roof age, past repairs, and any prior claims.

I am selling a home in Walworth County — how does this help me?

Knowing the storm history for your address lets you answer buyer questions with confidence, document repairs you have already made, and decide whether a pre-listing roof check is worthwhile. A clear hail history removes a common sticking point during negotiations.

How do I check hail history for a specific Walworth County address?

Use the address search to pull a free address-level hail report for any property in Walworth County — no phone number or email required. It shows recent hail activity for that address so you know whether a closer roof or exterior review makes sense.

Where does this storm report data come from, and what are its limits?

Storm reports on this page are public reports from storm events across Walworth County, SD, sourced from NOAA SPC and NWS Local Storm Reports. They show where hail, wind, or tornado activity was reported in Walworth County, but they do not confirm damage at any specific property. Report locations, sizes, and times may be approximate and can vary from what an individual home experienced. For property-specific hail history, use an address-level hail report or contact a participating local professional for a remote hail inspection. Pros inclusion is not an endorsement, and contacting a professional does not confirm damage at any property.

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