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HailGeeks
NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on July 21, 2017

Public hail, wind, and tornado reports across the United States on July 21, 2017 from July 21, 2017 through July 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
31
Wind Reports
153
Tornado Reports
6
Max Hail Size
2.75″
Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · July 21, 2017 · 2017–present Updated  Daily · last Jul 21, 2017

NWS Hail Reports on July 21, 2017

31 reports
Free hail report for your home →
1.75″ hail
Jul 21, 2017
11:55 PM UTC
Hail report for July 21, 2017
Wheeler County · 488 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 S Bartlett, NE
2.75″ hail
Jul 21, 2017
11:30 PM UTC
Hail report for July 21, 2017
Wheeler County · 488 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 7 S Bartlett, NE
1.00″ hail
Jul 21, 2017
11:10 PM UTC
Hail report for July 21, 2017
Richland County · 5,194 Homes in County
Hail Report Description: MOSTLY PEA TO DIME SIZE.
NWS Hail Report Location: 11 SW Hankinson, ND
1.00″ hail
Jul 21, 2017
10:55 PM UTC
Hail report for July 21, 2017
Aroostook County · 28,443 Homes in County
Hail Report Description: QUARTER SIZE HAIL IN STOCKHOLM MAINE.
NWS Hail Report Location: Stockholm, ME
1.00″ hail
Jul 21, 2017
10:53 PM UTC
Hail report for July 21, 2017
Clay County · 16,479 Homes in County
Hail Report Description: HAIL COVERED THE ROAD EAST OF DOWNER. TIME ESTIMATED BASED ON RADAR.
NWS Hail Report Location: 1 E Downer, MN
1.00″ hail
Jul 21, 2017
10:50 PM UTC
Hail report for July 21, 2017
Hubbard County · 12,217 Homes in County
Hail Report Description: A FEW QUARTER SIZED HAIL AND VERY STRONG WINDS. SOME LARGE 4-6 INCH DIAMETER BRANCHES BROKEN DOWN AROUND BENEDICT LAKE.
NWS Hail Report Location: 1 S Benedict, MN
1.00″ hail
Jul 21, 2017
10:45 PM UTC
Hail report for July 21, 2017
Becker County · 15,759 Homes in County
Hail Report Description: VERY HEAVY RAIN AND A FEW LARGE HAIL.
NWS Hail Report Location: 3 ENE Callaway, MN
1.00″ hail
Jul 21, 2017
10:22 PM UTC
Hail report for July 21, 2017
Johnson County · 32,661 Homes in County
Hail Report Description: REPORT VIA KCRG FACEBOOK.
NWS Hail Report Location: 4 SW Coralville, IA
1.25″ hail
Jul 21, 2017
10:16 PM UTC
Hail report for July 21, 2017
Grant County · 16,686 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3 NNE Cassville, WI
1.00″ hail
Jul 21, 2017
10:12 PM UTC
Hail report for July 21, 2017
Johnson County · 32,661 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: WNW Williamstown, IA
1.50″ hail
Jul 21, 2017
10:10 PM UTC
Hail report for July 21, 2017
Aroostook County · 28,443 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 SW Guerette, ME
1.00″ hail
Jul 21, 2017
10:07 PM UTC
Hail report for July 21, 2017
Aroostook County · 28,443 Homes in County
Hail Report Description: QUARTER INCH HAIL AND WIND GUSTS TO 35 MPH WERE REPORTED IN MADAWASKA.
NWS Hail Report Location: Madawaska, ME
2.00″ hail
Jul 21, 2017
10:04 PM UTC
Hail report for July 21, 2017
Clearwater County · 3,455 Homes in County
Hail Report Description: IN ADDITION TO SEVERE WINDS... LARGE HAIL COVERED THE GROUND.
NWS Hail Report Location: 4 SSE Bagley, MN
1.25″ hail
Jul 21, 2017
10:00 PM UTC
Hail report for July 21, 2017
Clearwater County · 3,455 Homes in County
Hail Report Description: MOSTLY DIME TO NICKEL SIZE HAIL... BUT SOME LARGER HAILSTONES WERE ABOUT A HALF DOLLAR IN SIZE
NWS Hail Report Location: Ebro, MN
1.25″ hail
Jul 21, 2017
10:00 PM UTC
Hail report for July 21, 2017
Cook County · 903,365 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Elk Grove Village, IL
Showing 15 of 31
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 July 21, 2017

153 reports
Free hail report + wind check →
UNK mph
Jul 21, 2017
11:54 PM UTC
Wind report for July 21, 2017
Aitkin County · 11,832 Homes in County
Wind Report Description: SEVERAL TREES DOWNED. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: Hill City, MN
UNK mph
Jul 21, 2017
11:47 PM UTC
Wind report for July 21, 2017
St. Louis County · 77,023 Homes in County
Wind Report Description: SEVERAL LARGE TREES AND BRANCHES DOWNED. TIME ESTIMATED FROM RADAR.
NWS Wind Report Location: Canyon, MN
UNK mph
Jul 21, 2017
11:43 PM UTC
Wind report for July 21, 2017
Elmore County · 27,573 Homes in County
Wind Report Description: SEVERAL TREES DOWN IN AND AROUND COOSADA. WINDS ESTIMATED AT 40 MPH.
NWS Wind Report Location: Coosada, AL
UNK mph
Jul 21, 2017
11:38 PM UTC
Wind report for July 21, 2017
Aroostook County · 28,443 Homes in County
Wind Report Description: AROOSTOOK BAND OF MICMACS EMERGENCY MANAGER REPORTS PART OF A BARN ROOF WAS TORN OFF AND A GREENHOUSE WAS DESTROYED.
NWS Wind Report Location: 6 NNE Presque Isle, ME
UNK mph
Jul 21, 2017
11:32 PM UTC
Wind report for July 21, 2017
Stephenson County · 16,193 Homes in County
Wind Report Description: TREE BRANCH BROKE IN THE WIND AND BROUGHT DOWN A POWERLINE.
NWS Wind Report Location: 2 SE Freeport, IL
UNK mph
Jul 21, 2017
11:31 PM UTC
Wind report for July 21, 2017
Muscatine County · 13,730 Homes in County
Wind Report Description: A FEW 2 TO 4 INCH BRANCHES DOWN WITHIN THE CITY OF MUSCATINE. 2 5 TO 8 INCH TREE LIMBS DOWN FROM SOFT WOOD TREES.
NWS Wind Report Location: Muscatine, IA
UNK mph
Jul 21, 2017
11:30 PM UTC
Wind report for July 21, 2017
Aroostook County · 28,443 Homes in County
Wind Report Description: TREES REPORTED DOWN ON COURT STREET AND HOOVER AVE
NWS Wind Report Location: Caribou, ME
UNK mph
Jul 21, 2017
11:29 PM UTC
Wind report for July 21, 2017
Cass County · 20,705 Homes in County
Wind Report Description: LEECH LAKE TRIBAL POLICE AND EMERGENCY MANAGEMENT OFFICERS REPORTING TREES DOWN ON TRACT 33 & 34... SPRUCE AND ALL AROUND CASS LAKE.
NWS Wind Report Location: 4 WNW Schley, MN
UNK mph
Jul 21, 2017
11:25 PM UTC
Wind report for July 21, 2017
Cass County · 20,705 Homes in County
Wind Report Description: LARGE TREE DOWNED. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: Longville, MN
UNK mph
Jul 21, 2017
11:24 PM UTC
Wind report for July 21, 2017
Roberts County · 3,945 Homes in County
Wind Report Description: TREE BRANCHES 4 INCH IN DIAMETER BROKEN OFF.
NWS Wind Report Location: 5 N Claire City, SD
70 mph
Jul 21, 2017
11:15 PM UTC
Wind report for July 21, 2017
Cedar County · 6,845 Homes in County
Wind Report Description: DELAYED REPORT FROM LAST EVENING. WINDS SNAPPED 3 TREES.
NWS Wind Report Location: 3 NW Bennett, IA
58 mph
Jul 21, 2017
11:10 PM UTC
Wind report for July 21, 2017
Cass County · 20,705 Homes in County
Wind Report Description: MNDOT SITE MN061.
NWS Wind Report Location: 3 W Schley, MN
UNK mph
Jul 21, 2017
11:05 PM UTC
Wind report for July 21, 2017
Cass County · 20,705 Homes in County
Wind Report Description: A COUPLE OF TREES BLOWN DOWN. TIME ESTIMATED FROM RADAR.
NWS Wind Report Location: 4 ESE Walker, MN
UNK mph
Jul 21, 2017
11:00 PM UTC
Wind report for July 21, 2017
Beltrami County · 14,934 Homes in County
Wind Report Description: LARGE OAK TREE TOPPLED ON TO HOUSE NEAR LAKE ANDRUSIA. REPORT POSTED VIA SOCIAL MEDIA. TIME ESTIMATED BASED ON RADAR.
NWS Wind Report Location: 8 ESE Bemidji, MN
UNK mph
Jul 21, 2017
10:45 PM UTC
Wind report for July 21, 2017
Beltrami County · 14,934 Homes in County
Wind Report Description: SEVERAL LARGE TREES WERE SNAPPED OR UPROOTED.
NWS Wind Report Location: 7 NE Bemidji, MN
Showing 15 of 153
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 July 21, 2017

6 reports
UNK category
Jul 21, 2017
10:56 PM UTC
Tornado report for July 21, 2017
Cheyenne County · 1,328 Homes in County
Tornado Report Description: LANDSPOUT TORNADO REPORTED BY NWS EMPLOYEE... LAW ENFORCEMENT... SPOTTERS AND PUBLIC.
NWS Tornado Report Location: 9 NNW Mcdonald, KS
UNK category
Jul 21, 2017
10:44 PM UTC
Tornado report for July 21, 2017
Johnson County · 32,661 Homes in County
Tornado Report Description: REPORT DELAYED - POSSIBLE TORNADO MOVING NORTHEAST - FUNNEL CLOUD APPEARED TO BRIEFLY TOUCH DOWN THEN LIFTED BACK INTO THE STORM
NWS Tornado Report Location: 6 NE Kalona, IA
UNK category
Jul 21, 2017
10:44 PM UTC
Tornado report for July 21, 2017
Clark County · 2,512 Homes in County
Tornado Report Description: REPORT DELAYED - POSSIBLE TORNADO MOVING NORTHEAST - FUNNEL CLOUD APPEARED TO BRIEFLY TOUCH DOWN THEN LIFTED BACK INTO THE STORM
NWS Tornado Report Location: 6 NE Kahoka, MO
UNK category
Jul 21, 2017
10:34 PM UTC
Tornado report for July 21, 2017
Clay County · 16,479 Homes in County
Tornado Report Description: A WEAK TORNADO WAS OBSERVED FOR ABOUT A MINUTE OVER LARGELY OPEN FARMLAND JUST NORTH OF I-94 IN EXTREME SOUTHEAST GLYNDON TOWNSHIP. PEAK WINDS ESTIMATED TO 75 MPH. MAXIMUM WIDTH TO 100 YARDS. TRACK WAS ESTIMATED TO BE SOUTHEASTERLY FOR A HALF MILE OR LESS.
NWS Tornado Report Location: 4 S Glyndon, MN
UNK category
Jul 21, 2017
8:45 PM UTC
Tornado report for July 21, 2017
Beltrami County · 14,934 Homes in County
Tornado Report Description: THIS TORNADO TRACKED EASTWARD WITH NUMEROUS INTERMITTENT TOUCHDOWNS ALONG A ROUGHLY 3 MILE TRACK ALONG CR34 TO AROUND 7W OF KELLIHER BY 350 PM CDT. NUMEROUS TREES WERE SNAPPED AND A COUPLE OF GRAIN BINS WERE TOPPLED. ROOF PANELS AND WALLS WERE BLOWN OUT OF POLE SHEDS AND CALVING SHEDS WERE FLIPPED. INSULATION AND ROOFING METAL WAS STREWN ABOUT. PEAK WINDS ESTIMATED TO 95 MPH. MAXIMUM WIDTH TO 200 YARDS.
NWS Tornado Report Location: 10 W Kelliher, MN
UNK category
Jul 21, 2017
8:45 PM UTC
Tornado report for July 21, 2017
Beltrami County · 14,934 Homes in County
Tornado Report Description: MULTIPLE BRIEF TOUCHDOWNS OBSERVED OVER A HALF MINUTE PERIOD. GRAIN BINS AND OTHER FARM BUILDINGS DAMAGED.
NWS Tornado Report Location: 8 W Kelliher, MN
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 July 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 July 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 July 21, 2017?

Our records show 31 hail, 153 wind, and 6 tornado reports on July 21, 2017, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on July 21, 2017.

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

The largest hail size in these storm-report records on July 21, 2017 is 2.75″, reported near Bartlett, NE.

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 July 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 July 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 July 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 July 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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