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HailGeeks
NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on August 12, 2021

Public hail, wind, and tornado reports across the United States on August 12, 2021 from August 12, 2021 through August 12, 2021, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Pick any date to see hail, wind and tornado public reports for that day — e.g. September 18, 2026.
Hail Reports
49
Wind Reports
338
Tornado Reports
7
Max Hail Size
2.75″
Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · August 12, 2021 · 2021–present Updated  Daily · last Aug 12, 2021

NWS Hail Reports on August 12, 2021

49 reports
Free hail report for your home →
1.00″ hail
Aug 12, 2021
11:55 PM UTC
Hail report for August 12, 2021
Ellis County · 9,347 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2 N Hays, KS
1.00″ hail
Aug 12, 2021
11:45 PM UTC
Hail report for August 12, 2021
Logan County · 1,181 Homes in County
Hail Report Description: QUARTER SIZE HAIL REPORTED IN WINONA... HAS BEEN ONGOING FOR 5-10 MINS
NWS Hail Report Location: Winona, KS
1.00″ hail
Aug 12, 2021
11:37 PM UTC
Hail report for August 12, 2021
Sheridan County · 1,053 Homes in County
Hail Report Description: SUSTAINED HAIL FOR 5-10MINS RANGING FROM PEA TO QUARTERS
NWS Hail Report Location: Angelus, KS
1.00″ hail
Aug 12, 2021
11:28 PM UTC
Hail report for August 12, 2021
Osborne County · 1,813 Homes in County
Hail Report Description: SCATTERED HAIL UP TO QUARTER SIZE.
NWS Hail Report Location: 7 S Alton, KS
1.75″ hail
Aug 12, 2021
11:21 PM UTC
Hail report for August 12, 2021
Sheridan County · 1,053 Homes in County
Hail Report Description: PUBLIC REPORT OF QUARTER TO GOLFBALL HAIL
NWS Hail Report Location: 3 E Angelus, KS
1.00″ hail
Aug 12, 2021
11:20 PM UTC
Hail report for August 12, 2021
Rooks County · 2,365 Homes in County
Hail Report Description: FACEBOOK PHOTO SENT TO WFO GLD. TIME ESTIMATED FROM RADAR.
NWS Hail Report Location: Plainville, KS
1.75″ hail
Aug 12, 2021
11:18 PM UTC
Hail report for August 12, 2021
Sheridan County · 1,053 Homes in County
Hail Report Description: DELAYED REPORT. GOLF BALL SIZED HAIL RELAYED VIA SOCIAL MEDIA.
NWS Hail Report Location: Angelus, KS
1.00″ hail
Aug 12, 2021
10:41 PM UTC
Hail report for August 12, 2021
Lincoln County · 1,475 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 15 WNW Lincoln, KS
1.00″ hail
Aug 12, 2021
10:38 PM UTC
Hail report for August 12, 2021
Johnson County · 169,394 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Johnson Co Arpt, KS
1.00″ hail
Aug 12, 2021
10:30 PM UTC
Hail report for August 12, 2021
Morgan County · 11,415 Homes in County
Hail Report Description: PENNY TO QUARTER SIZE HAIL
NWS Hail Report Location: Meredosia, IL
1.75″ hail
Aug 12, 2021
10:20 PM UTC
Hail report for August 12, 2021
Johnson County · 169,394 Homes in County
Hail Report Description: QUARTER TO GOLF BALL SIZED HAIL
NWS Hail Report Location: Olathe, KS
1.25″ hail
Aug 12, 2021
10:15 PM UTC
Hail report for August 12, 2021
Johnson County · 169,394 Homes in County
Hail Report Description: DELAYED REPORT...
NWS Hail Report Location: 2 E Olathe, KS
1.00″ hail
Aug 12, 2021
10:15 PM UTC
Hail report for August 12, 2021
Lincoln County · 1,475 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 7 WNW Ash Grove, KS
1.00″ hail
Aug 12, 2021
10:13 PM UTC
Hail report for August 12, 2021
Madison County · 12,945 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 5 N Mount Sterling, OH
1.00″ hail
Aug 12, 2021
10:11 PM UTC
Hail report for August 12, 2021
Johnson County · 169,394 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Olathe, KS
Showing 15 of 49
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.

NWS Wind Reports on August 12, 2021

338 reports
Free hail report + wind check →
UNK mph
Aug 12, 2021
11:58 PM UTC
Wind report for August 12, 2021
St. Louis city · 75,506 Homes in County
Wind Report Description: 1 TO 3 INCH LIMBS DOWN.
NWS Wind Report Location: 3 N Lemay, MO
60 mph
Aug 12, 2021
11:55 PM UTC
Wind report for August 12, 2021
Ellis County · 9,347 Homes in County
Wind Report Description: ESTIMATED 50-60 MPH WIND GUSTS.
NWS Wind Report Location: 2 N Hays, KS
58 mph
Aug 12, 2021
11:55 PM UTC
Wind report for August 12, 2021
St. Louis County · 320,708 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 1 SSW Hazelwood, MO
UNK mph
Aug 12, 2021
11:55 PM UTC
Wind report for August 12, 2021
Jefferson County · 74,314 Homes in County
Wind Report Description: NUMEROUS TREE LIMBS BLOWN DOWN. VIA FACEBOOK.
NWS Wind Report Location: Barnhart, MO
UNK mph
Aug 12, 2021
11:54 PM UTC
Wind report for August 12, 2021
St. Louis County · 320,708 Homes in County
Wind Report Description: LIMBS DOWN.
NWS Wind Report Location: Normandy, MO
UNK mph
Aug 12, 2021
11:54 PM UTC
Wind report for August 12, 2021
Madison County · 93,884 Homes in County
Wind Report Description: LARGE TREE BLOWN OVER ONTO ILLINOIS ROUTE 3.
NWS Wind Report Location: Granite City, IL
UNK mph
Aug 12, 2021
11:51 PM UTC
Wind report for August 12, 2021
St. Louis County · 320,708 Homes in County
Wind Report Description: NUMEROUS TREE LIMBS BLOWN DOWN.
NWS Wind Report Location: Oakville, MO
UNK mph
Aug 12, 2021
11:50 PM UTC
Wind report for August 12, 2021
Indiana County · 25,395 Homes in County
Wind Report Description: TREES AND WIRES DOWN
NWS Wind Report Location: 2 N Brush Valley, PA
UNK mph
Aug 12, 2021
11:50 PM UTC
Wind report for August 12, 2021
Westmoreland County · 129,916 Homes in County
Wind Report Description: TREE/WIRES DOWN
NWS Wind Report Location: 1 WNW Forbes Road, PA
UNK mph
Aug 12, 2021
11:50 PM UTC
Wind report for August 12, 2021
Guernsey County · 14,032 Homes in County
Wind Report Description: REPORT OF TREES DOWN AND POWER OUTAGES. TIME ESTIMATED BASED ON RADAR.
NWS Wind Report Location: 2 E Guernsey, OH
74 mph
Aug 12, 2021
11:45 PM UTC
Wind report for August 12, 2021
Ellis County · 9,347 Homes in County
Wind Report Description: MEASURED BY MESONET STATION.
NWS Wind Report Location: 5 NNE Acres, KS
UNK mph
Aug 12, 2021
11:45 PM UTC
Wind report for August 12, 2021
Miami County · 37,393 Homes in County
Wind Report Description: MULTIPLE LARGE TREES DOWN.
NWS Wind Report Location: 4 WSW Troy, OH
UNK mph
Aug 12, 2021
11:45 PM UTC
Wind report for August 12, 2021
Westmoreland County · 129,916 Homes in County
Wind Report Description: SEVERAL TREES AND POWER LINES DOWN IN PENN TOWNSHIP
NWS Wind Report Location: 1 N Mccullough, PA
UNK mph
Aug 12, 2021
11:45 PM UTC
Wind report for August 12, 2021
Clearfield County · 29,021 Homes in County
Wind Report Description: TREES DOWN
NWS Wind Report Location: 2 W Plymptonville, PA
UNK mph
Aug 12, 2021
11:44 PM UTC
Wind report for August 12, 2021
St. Louis city · 75,506 Homes in County
Wind Report Description: SEVERAL TREES DOWN ACROSS MCCAUSLAND AVE.
NWS Wind Report Location: 1 NE Maplewood, MO
Showing 15 of 338
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.

NWS Tornado Reports on August 12, 2021

7 reports
UNK category
Aug 12, 2021
9:37 PM UTC
Tornado report for August 12, 2021
Harris County · 1,069,971 Homes in County
Tornado Report Description: HARRIS COUNTY PCT. 5 CONSTABLES REPORTING TORNADO. AIRBORNE DEBRIS AND 5 TELEPHONE POLES DOWNED.
NWS Tornado Report Location: 5 SW Cypress, TX
UNK category
Aug 12, 2021
4:05 AM UTC
Tornado report for August 12, 2021
Polk County · 10,621 Homes in County
Tornado Report Description: A TORNADO TRACKED INTERMITTENTLY TO THE EAST-NORTHEAST FOR ROUGHLY 2 MILES TO AROUND 5SE KEY WEST BY 1109 PM CDT. THE TORNADO SNAPPED THE TOPS OFF OF SEVERAL ASH AND COTTONWOOD TREES AT TWO FARMSTEADS ALONG ITS PATH AND CRACKED A POWER POLE. PEAK WINDS ESTIMATED TO 80 MPH. MAXIMUM WIDTH TO 150 YARDS.
NWS Tornado Report Location: 4 SE Key West, MN
UNK category
Aug 12, 2021
3:55 AM UTC
Tornado report for August 12, 2021
Polk County · 10,621 Homes in County
Tornado Report Description: A TORNADO TRACKED FOR ABOUT 3 MILES TO AROUND 5 NNE OF FISHER BY 1101 PM CDT. THE TORNADO BLEW OUT TWO WALLS OF A POLESHED... BROKE DOWN SEVERAL ASH AND COTTONWOOD TREES... AND PEELED UP TIN SIDING ON OTHER FARM BUILDING IN A YARD. IT CARRIED DEBRIS TO THE EAST AND SOUTHEAST FOR UP TO 500 YARDS WHIL IT MAINLY TRACKED TO THE EAST. PEAK WINDS ESTIMATED TO 105 MPH. MAXIMUM WIDTH TO 200 YARDS.
NWS Tornado Report Location: 1 S Davidson, MN
UNK category
Aug 12, 2021
2:42 AM UTC
Tornado report for August 12, 2021
Grand Forks County · 14,937 Homes in County
Tornado Report Description: A FEW COTTONWOOD TREES WERE SNAPPED OR UPROOTED IN A SHELTERBELT BETWEEN ABOUT 942 AND 943 PM CDT. LIKELY A BRIEF TORNADO TOUCHDOWN BASED ON RADAR SIGNATURE. PEAK WINDS ESTIMATED TO 90 MPH. MAXIMUM WIDTH TO 150 YARDS. TIME ESTIMATED BASED ON RADAR.
NWS Tornado Report Location: 5 WNW Northwood, ND
UNK category
Aug 12, 2021
2:20 AM UTC
Tornado report for August 12, 2021
Steele County · 911 Homes in County
Tornado Report Description: A TORNADO TRACKED EASTWARD FOR ROUGHLY 3 MILES FROM FAR NORTHEAST SHARON TOWNSHIP ACROSS FAR NORTHWESTERN WESTFIELD TOWNSHIP TO AROUND 7 NE SHARON BY 928 PM CDT. A TORNADO DEBRIS SIGNATURE WAS EVIDENT ON KMVX RADAR. THE TORNADO COMPLETELY DISMANTLED AND DESTROYED A BARN AT ONE FARMSTEAD. IT ALSO SNAPPED OR UPROOTED NUMEROUS SPRUCE... ASH... COTTONWOOD... AND WILLOW TREES AT VARIOUS LOCATIONS ALONG ITS PATH. PEAK WINDS ESTIMATED TO 115 MILES AN HOUR. MAXIMUM WIDTH ESTIMATED TO 300 YARDS.
NWS Tornado Report Location: 5 NNE Sharon, ND
UNK category
Aug 12, 2021
1:34 AM UTC
Tornado report for August 12, 2021
Griggs County · 1,143 Homes in County
Tornado Report Description: A BRIEF TOUCHDOWN WAS NOTED AND RECORDED ON VIDEO BETWEEN 834 AND 835 PM CDT. THE TOUCHDOWN OCCURRED OVER AN OPEN FIELD AS THE STORM BECAME QUICKLY RAIN WRAPPED AND ADDITIONAL BRIEF TOUCHDOWNS MAY HAVE OCCURRED LATER IN THE EAST-NORTHEASTWARD PATH. PEAK WINDS ESTIMATED TO 75 MPH. MAXIMUM WIDTH TO 50 YARDS.
NWS Tornado Report Location: 3 E Binford, ND
UNK category
Aug 12, 2021
12:16 AM UTC
Tornado report for August 12, 2021
Towner County · 1,036 Homes in County
Tornado Report Description: A TORNADO TOUCHED DOWN IN NORTHEAST COOLIN TOWNSHIP AND TRACKED INTERMITTENTLY TO THE NORTHEAST FOR ROUGHLY 4 MILES TO AROUND 4 NW STARKWEATHER IN WESTCENTRAL KLINGSTRUP TOWNSHIP /RAMSEY COUNTY/ BY 723 PM CDT. THE TORNADO SNAPPED OR UPROOTED SEVERAL LARGE COTTONWOOD TREES AT FARMSTEADS AND SHELTERBELTS ALONG ITS PATH. PEAK WINDS ESTIMATED FROM 80 TO 90 MPH. MAXIMUM WIDTH TO 200 YARDS.
NWS Tornado Report Location: 5 W Starkweather, ND
Showing 7 of 7
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 on August 12, 2021 on the Interactive Map

Report type
Hail
Wind
Tornado

Get a Remote Hail Inspection

Not sure if hail may have affected your home on August 12, 2021? 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 storm reports were recorded on August 12, 2021?

Our records show 49 hail, 338 wind, and 7 tornado reports on August 12, 2021, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on August 12, 2021.

What was the largest hail reported on August 12, 2021?

The largest hail size in these storm-report records on August 12, 2021 is 2.75″, reported near Binford, ND.

Some reports show UNK instead of a wind speed or tornado rating — what does that mean?

Wind reports come three ways: measured from an instrument, estimated from the damage observed, or UNK when no speed was recorded. Tornadoes show UNK until the National Weather Service finishes a damage survey and assigns an EF rating. UNK simply means that value was not available when the report was filed.

A report appeared near my home on August 12, 2021 — is my roof damaged?

Not necessarily. A storm report shows that hail, wind, or a tornado was observed nearby, not that any specific home was hit. To find out whether your property was affected, check an address-level hail report, and if it looks significant, ask a local pro about a Remote Hail Inspection before scheduling roof work.

I am buying or selling a home — how do these on August 12, 2021 reports help?

If a storm passed through, a roof or exterior may have damage that is hard to see, or a recent repair may trace back to it. Buyers can ask better questions before closing, and sellers can document the home condition up front — both starting from the property address rather than a whole region.

How do I check what happened at a specific address on August 12, 2021?

Use the address search to pull a free address-level hail report for any property — 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 on August 12, 2021 across the United States, sourced from NOAA SPC and NWS Local Storm Reports. They show where hail, wind, or tornado activity was reported, 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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