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NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on February 21, 2017

Public hail, wind, and tornado reports across the United States on February 21, 2017 from February 21, 2017 through February 21, 2017, 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
9
Tornado Reports
6
Max Hail Size
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Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · February 21, 2017 · 2017–present Updated  Daily · last Feb 21, 2017

NWS Hail Reports on February 21, 2017

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 February 21, 2017

9 reports
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60 mph
Feb 21, 2017
11:45 PM UTC
Wind report for February 21, 2017
Fallon County · 1,019 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 1 SSE Baker, MT
UNK mph
Feb 21, 2017
10:00 PM UTC
Wind report for February 21, 2017
Cache County · 29,093 Homes in County
Wind Report Description: A FIFTY FOOT TREE FELL ONTO A TRAILER.
NWS Wind Report Location: Smithfield, UT
UNK mph
Feb 21, 2017
10:00 PM UTC
Wind report for February 21, 2017
Cache County · 29,093 Homes in County
Wind Report Description: TWO POWER POLES KNOCKED DOWN.
NWS Wind Report Location: Amalga, UT
UNK mph
Feb 21, 2017
10:00 PM UTC
Wind report for February 21, 2017
Cache County · 29,093 Homes in County
Wind Report Description: NINE POWER POLES KNOCKED DOWN AS WELL AS TWO CROSSARMS.
NWS Wind Report Location: Wellsville, UT
UNK mph
Feb 21, 2017
7:30 AM UTC
Wind report for February 21, 2017
Robertson County · 5,944 Homes in County
Wind Report Description: DELAYED REPORT---PICTURE OF A TRAILER OVERTURNED AT LSP TRUCKING FACILITY. REPORT RELAYED VIA WFO HOUSTON/GALVESTON. TIME ESTIMATED VIA RADAR.
NWS Wind Report Location: 4.45 Nnw Benchley, TX
UNK mph
Feb 21, 2017
6:35 AM UTC
Wind report for February 21, 2017
Milam County · 8,658 Homes in County
Wind Report Description: DELAYED REPORT---THORNDALE CO-OP OBSERVER ESTIMATES 40 FT. TALL TREE DOWN ON HOUSE IN THORNDALE WITH DAMAGE TO THE EAVE OF HOUSE. TIME ESTIMATED VIA RADAR.
NWS Wind Report Location: Thorndale, TX
138 mph
Feb 21, 2017
6:28 AM UTC
Wind report for February 21, 2017
Williamson County · 183,198 Homes in County
Wind Report Description: *** 2 INJ *** AT LEAST 10 HOMES WERE SIGNIFICANTLY DAMAGED ALONG A PATH FROM 2NW OF THRALL TO 2N OF THRALL. IN ADDITION...AT LEAST A DOZEN FARM OUTBUILDINGS...MOBILE HOMES...AND RVS WERE SEVERELY DAMAGED OR DESTROYED. A COUPLE SUFFERED MINOR INJURIES IN AN RV.
NWS Wind Report Location: 2 NW Thrall, TX
UNK mph
Feb 21, 2017
3:35 AM UTC
Wind report for February 21, 2017
Medina County · 13,144 Homes in County
Wind Report Description: NEWSPAPER RECEIVED REPORT OF A FEW SHEDS BLOWN OVER NORTH OF THE CITY OF DEVINE.
NWS Wind Report Location: 3 E Biry, TX
UNK mph
Feb 21, 2017
2:56 AM UTC
Wind report for February 21, 2017
Franklin County · 45,640 Homes in County
Wind Report Description: A SHED WAS KNOCKED OVER BY STRAIGHT-LINE WINDS.
NWS Wind Report Location: Waynesboro, PA
Showing 9 of 9
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 February 21, 2017

6 reports
UNK category
Feb 21, 2017
6:28 AM UTC
Tornado report for February 21, 2017
Williamson County · 183,198 Homes in County
Tornado Report Description: EF-2 DAMAGE WAS FOUND IN THE VICINITY OF THRALL. THE MOST SIGNIFICANT DAMAGE WAS TO A 3-BIN GRAIN STORAGE FACILITY WHERE THE BINS WERE COMPLETELY DESTROYED AND SWEPT FROM THEIR FOUNDATIONS.
NWS Tornado Report Location: 5 SW Thrall, TX
UNK category
Feb 21, 2017
6:25 AM UTC
Tornado report for February 21, 2017
Williamson County · 183,198 Homes in County
Tornado Report Description: A TORNADO CAUSED DAMAGE FROM 5 WSW OF THRALL TO 4 ENE OF THRALL. THE MOST SIGNIFICANT DAMAGE WAS TO A METAL BUILDING SYSTEM HOME...AT LEAST FIVE OTHER SINGLE FAMILY HOMES...AND 12 RAILROAD CARS THAT WERE BLOWN OFF THE TRACKS EAST OF THRALL.
NWS Tornado Report Location: 5 WSW Thrall, TX
UNK category
Feb 21, 2017
5:00 AM UTC
Tornado report for February 21, 2017
Comal County · 55,080 Homes in County
Tornado Report Description: EF-0 DAMAGE WAS FOUND ALONG A PATH FROM 3NE OF GARDEN RIDGE TO 4NE OF GARDEN RIDGE.
NWS Tornado Report Location: 3 NE Garden Ridge, TX
UNK category
Feb 21, 2017
4:43 AM UTC
Tornado report for February 21, 2017
Bexar County · 521,494 Homes in County
Tornado Report Description: EF-1 DAMAGE WAS FOUND ALONG A PATH FROM 3NW OF WINDCREST TO 5WNW OF UNIVERSAL CITY.
NWS Tornado Report Location: 3 NW Windcrest, TX
UNK category
Feb 21, 2017
4:42 AM UTC
Tornado report for February 21, 2017
Bexar County · 521,494 Homes in County
Tornado Report Description: EF-0 DAMAGE WAS FOUND ALONG A PATH FROM 5SW OF UNIVERSAL CITY TO 3SW OF UNIVERSAL CITY.
NWS Tornado Report Location: 5 SW Universal City, TX
UNK category
Feb 21, 2017
4:36 AM UTC
Tornado report for February 21, 2017
Bexar County · 521,494 Homes in County
Tornado Report Description: EF-1 DAMAGE WAS FOUND ALONG A PATH FROM 5N OF SAN ANTONIO TO 3NNE OF TERRELL HILLS.
NWS Tornado Report Location: 5 N San Antonio, TX
Showing 6 of 6
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 February 21, 2017 on the Interactive Map

Report type
Hail
Wind
Tornado

Get a Remote Hail Inspection

Not sure if hail may have affected your home on February 21, 2017? 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 February 21, 2017?

Our records show 0 hail, 9 wind, and 6 tornado reports on February 21, 2017, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on February 21, 2017.

What was the largest hail reported on February 21, 2017?

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 February 21, 2017 — 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 February 21, 2017 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 February 21, 2017?

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 February 21, 2017 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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