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NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on October 21, 2021

Public hail, wind, and tornado reports across the United States on October 21, 2021 from October 21, 2021 through October 21, 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
0
Wind Reports
26
Tornado Reports
22
Max Hail Size
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Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · October 21, 2021 · 2021–present Updated  Daily · last Oct 21, 2021

NWS Hail Reports on October 21, 2021

0 reports
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No hail reports were found for this selection.

Showing 0 of 0
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 October 21, 2021

26 reports
Free hail report + wind check →
UNK mph
Oct 21, 2021
11:58 PM UTC
Wind report for October 21, 2021
Washington County · 72,125 Homes in County
Wind Report Description: DAMAGE TO HOMES... WITH TREES ALSO DOWN. POSSIBLE TORNADO DAMAGE. DAMAGE OCCURED OVER A FEW BLOCKS.
NWS Wind Report Location: Houston, PA
UNK mph
Oct 21, 2021
11:55 PM UTC
Wind report for October 21, 2021
Butler County · 60,115 Homes in County
Wind Report Description: REPORT OF SNAPPED AND UPROOTED TREES. TIME ESTIMATED BASED ON RADAR.
NWS Wind Report Location: 3 SE Chicora, PA
UNK mph
Oct 21, 2021
11:53 PM UTC
Wind report for October 21, 2021
Allegheny County · 372,149 Homes in County
Wind Report Description: MULTIPLE TREES UPROOTED OR SNAPPED OFF. TREES ON HOUSES. POWER LINES DOWN. POSSIBLE TORNADO.
NWS Wind Report Location: Hampton Township, PA
UNK mph
Oct 21, 2021
11:53 PM UTC
Wind report for October 21, 2021
Allegheny County · 372,149 Homes in County
Wind Report Description: NUMEROUS WIRES DOWN
NWS Wind Report Location: 3 S Hampton Township, PA
UNK mph
Oct 21, 2021
11:53 PM UTC
Wind report for October 21, 2021
Allegheny County · 372,149 Homes in County
Wind Report Description: TREES AND POWER LINES DOWN... ROOF DAMAGE... TREE ON CAR WITH ENTRAPMENT IN HAMPTON TWP. POSSIBLE TORNADO.
NWS Wind Report Location: 1 N Allison Park, PA
UNK mph
Oct 21, 2021
11:51 PM UTC
Wind report for October 21, 2021
Washington County · 72,125 Homes in County
Wind Report Description: PICTURES SHOW SIGNIFICANT DAMAGE TO HOME AND GARAGE. POSSIBLE TORNADO. TIME ESTIMATED BASED ON RADAR.
NWS Wind Report Location: Brevard, PA
UNK mph
Oct 21, 2021
11:49 PM UTC
Wind report for October 21, 2021
Washington County · 72,125 Homes in County
Wind Report Description: ROOF BLOWN OFF HOME AND DAMAGE TO GARAGE ON MCCARRELL RD. POSSIBLE TORNADO.
NWS Wind Report Location: 1 W Brevard, PA
UNK mph
Oct 21, 2021
11:46 PM UTC
Wind report for October 21, 2021
Washington County · 72,125 Homes in County
Wind Report Description: REPORT OF ROOF BLOWN OFF HOUSE AND DAMAGE TO HOME ALONG DAIRY ROAD... WITH POTENTIAL FOR DAMAGE TO 3 ADDITIONAL HOMES AS WELL AS SEVERAL BARNS. POSSIBLE TORNADO.
NWS Wind Report Location: 2 WNW Gretna, PA
UNK mph
Oct 21, 2021
11:45 PM UTC
Wind report for October 21, 2021
Allegheny County · 372,149 Homes in County
Wind Report Description: NUMEROUS TREE LIMBS DOWN
NWS Wind Report Location: Mccandless Township, PA
UNK mph
Oct 21, 2021
11:43 PM UTC
Wind report for October 21, 2021
Washington County · 72,125 Homes in County
Wind Report Description: HOME DESTROYED. POSSIBLE TORNADO.
NWS Wind Report Location: 4 SW Hickory, PA
UNK mph
Oct 21, 2021
11:41 PM UTC
Wind report for October 21, 2021
Allegheny County · 372,149 Homes in County
Wind Report Description: *CORRECTED FOR EVENT TYPE** REPORT OF GLASS STORE FRONT BLOWN OFF AT TARGET. POSSIBLE TORNADO. TIME ESTIMTED BASED ON RADAR.
NWS Wind Report Location: 1 NW Highcliff, PA
UNK mph
Oct 21, 2021
11:40 PM UTC
Wind report for October 21, 2021
Washington County · 72,125 Homes in County
Wind Report Description: TREES AND POWER LINES DOWN ON OLD TRAILS RD & JEFFERSON AVE.
NWS Wind Report Location: 1 ESE West Middletown, PA
UNK mph
Oct 21, 2021
11:35 PM UTC
Wind report for October 21, 2021
Butler County · 60,115 Homes in County
Wind Report Description: CHASER REPORTED POWER FLASHES FROM LIKELY TORNADO ALONG HWY 422. VIDEO SHOWS TREE DEBRIS ALONG 422 JUST EAST OF N DUFFY RD.
NWS Wind Report Location: 1 E Greenwood Village, PA
UNK mph
Oct 21, 2021
11:24 PM UTC
Wind report for October 21, 2021
Butler County · 60,115 Homes in County
Wind Report Description: REPORT OF MANY TREES AND LIMBS DOWN NEAR SLIPPERY ROCK ALONG KIESTER ROAD.
NWS Wind Report Location: 1 NNE Doughertys Mills, PA
UNK mph
Oct 21, 2021
11:24 PM UTC
Wind report for October 21, 2021
Butler County · 60,115 Homes in County
Wind Report Description: REPORTS OF TREES DOWN AND UPROOTED IN SLIPPERY ROCK. POSSIBLE TORNADO
NWS Wind Report Location: Slippery Rock, PA
Showing 15 of 26
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 October 21, 2021

22 reports
UNK category
Oct 21, 2021
11:55 PM UTC
Tornado report for October 21, 2021
Washington County · 72,125 Homes in County
Tornado Report Description: AN EF-1 TORNADO HAS BEEN CONFIRMED ALONG EAST FINLEY DRIVE. TIME ESTIMATED BASED ON RADAR.
NWS Tornado Report Location: 1 WSW Old Concord, PA
UNK category
Oct 21, 2021
11:49 PM UTC
Tornado report for October 21, 2021
Allegheny County · 372,149 Homes in County
Tornado Report Description: ROOF BLOWN OFF HOME ON LINDEN DR IN HAMPTON TWP.
NWS Tornado Report Location: 1 WNW Allison Park, PA
UNK category
Oct 21, 2021
11:45 PM UTC
Tornado report for October 21, 2021
Washington County · 72,125 Homes in County
Tornado Report Description: HOMES DAMAGED ON WILLOW RD AND LOWRY LANE.
NWS Tornado Report Location: 1 N Buffalo, PA
UNK category
Oct 21, 2021
11:42 PM UTC
Tornado report for October 21, 2021
Allegheny County · 372,149 Homes in County
Tornado Report Description: SPOTTER REPORTED WEAK RAIN-WRAPPED TORNADO CROSSING I-279 SOUTH OF MILE MARKER 11.
NWS Tornado Report Location: 1 ESE Mount Nebo, PA
UNK category
Oct 21, 2021
11:41 PM UTC
Tornado report for October 21, 2021
Allegheny County · 372,149 Homes in County
Tornado Report Description: REPORT OF GLASS STORE FRONT BLOWN OFF AT TARGET. POSSIBLE TORNADO. TIME ESTIMTED BASED ON RADAR.
NWS Tornado Report Location: 1 NW Highcliff, PA
UNK category
Oct 21, 2021
11:33 PM UTC
Tornado report for October 21, 2021
Butler County · 60,115 Homes in County
Tornado Report Description: EF0 TORNADO CONFIRMED WITH DISCONTINUOUS TRACK NORTH OF BUTLER. NUMEROUS TREES WERE SNAPPED AND UPROOTED AMONGST OTHER DAMAGE SEEN.
NWS Tornado Report Location: Greenwood Village, PA
UNK category
Oct 21, 2021
11:11 PM UTC
Tornado report for October 21, 2021
Beaver County · 60,039 Homes in County
Tornado Report Description: EF1 TORNADO CONFIRMED STARTING NEAR FRANKLING TOWNSHIP IN BEAVER COUNTY AND ENDING JUST WEST OF PERRY HIGHWAY IN BUTLER COUNTY. NUMEROUS TREES WERE SNAPPED AMONG OTHER DAMAGE.
NWS Tornado Report Location: 2 NNE Goehring, PA
UNK category
Oct 21, 2021
11:06 PM UTC
Tornado report for October 21, 2021
Belmont County · 24,189 Homes in County
Tornado Report Description: EF1 TORNADO CONFIRMED WITH ESTIMATED MAX WIND SPEED BETWEEN 90-95MPH. CONSIDERABLE DAMAGE TO TREES AND LARGE BARN... WITH DEBRIS DAMAGING NEARBY CARS.
NWS Tornado Report Location: 1 NNW Warnock, OH
UNK category
Oct 21, 2021
11:04 PM UTC
Tornado report for October 21, 2021
Jefferson County · 24,381 Homes in County
Tornado Report Description: EF1 TORNADO CONFIRMED. CONSIDERABLE DAMAGE TO TREES AND BARNS WITH SOME DAMAGE TO HOUSE SIDING.
NWS Tornado Report Location: Mount Pleasant, OH
UNK category
Oct 21, 2021
11:03 PM UTC
Tornado report for October 21, 2021
Jefferson County · 24,381 Homes in County
Tornado Report Description: POSSIBLE TOUCH DOWN OF A TORNADO NEAR ROUTE 102 IN A FIELD NEAR MT. PLEASANT AREA. POWER LINES AND TREES DOWN.
NWS Tornado Report Location: 1 WSW Mount Pleasant, OH
UNK category
Oct 21, 2021
10:56 PM UTC
Tornado report for October 21, 2021
Beaver County · 60,039 Homes in County
Tornado Report Description: EF1 TORNADO CONFIRMED NEAR NEW GALILEE. MULTIPLE SNAPPED TREES WERE SEEN WITH THIS TORNADO.
NWS Tornado Report Location: 1 ENE New Galilee, PA
UNK category
Oct 21, 2021
10:20 PM UTC
Tornado report for October 21, 2021
Trumbull County · 72,618 Homes in County
Tornado Report Description: NWS STORM SURVEY CONFIRMS AN EF-0 IN JOHNSTON TOWNSHIP IN TRUMBULL COUNTY. THIS TORNADO TOUCHED DOWN ON PORTER DRIVE CAUSING TREE DAMAGE ACROSS THE AREA BEFORE LIFTING.
NWS Tornado Report Location: 5 NE Cortland, OH
UNK category
Oct 21, 2021
10:15 PM UTC
Tornado report for October 21, 2021
Trumbull County · 72,618 Homes in County
Tornado Report Description: NWS STORM SURVEY CONFIRMS AN EF-1 TORNADO IN MECCA IN TRUMBULL COUNTY. THE TORNADO BEGAN EAST OF MOSQUITO CREEK LAKE AND MOVED THROUGH GRIFFITH AND EDGEWATER DRIVES PRODUCING DAMAGE TO SEVERAL HOMES AND NUMEROUS TREES. THE TORNADO LIFTED JUST EAST OF PHILLIPS RICE ROAD.
NWS Tornado Report Location: 3 N Cortland, OH
UNK category
Oct 21, 2021
10:07 PM UTC
Tornado report for October 21, 2021
Trumbull County · 72,618 Homes in County
Tornado Report Description: EMERGENCY MANAGER AND LAW ENFORCEMENT REPORT VISUAL CONFIRMATION OF A TORNADO.
NWS Tornado Report Location: 1 W Mineral Ridge, OH
UNK category
Oct 21, 2021
9:21 PM UTC
Tornado report for October 21, 2021
Portage County · 46,036 Homes in County
Tornado Report Description: NWS STORM SURVEY TEAM CONFIRMS AN EF-0 NEAR AURORA. THE TORNADO INITIALLY TOUCHED DOWN WEST OF A LARGE 4-STORY BUILDING NORTHWEST OF LENA DRIVE AND PAGE ROAD. THE TORNADO MOVED EAST OVER THE PARKING LOT. ROOF AC UNIT WAS BLOW OVER... ROOF DAMAGE... AND TREE LIMBS WERE SNAPPED AND SCATTERED ACROSS THE PARKING LOT.
NWS Tornado Report Location: 2 SSE Aurora, OH
Showing 15 of 22
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 October 21, 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 October 21, 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 October 21, 2021?

Our records show 0 hail, 26 wind, and 22 tornado reports on October 21, 2021, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on October 21, 2021.

What was the largest hail reported on October 21, 2021?

No reported hail size is available for this selection.

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 October 21, 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 October 21, 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 October 21, 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 October 21, 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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