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HailGeeks
NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on September 20, 2017

Public hail, wind, and tornado reports across the United States on September 20, 2017 from September 20, 2017 through September 20, 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
30
Wind Reports
65
Tornado Reports
3
Max Hail Size
2.00″
Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · September 20, 2017 · 2017–present Updated  Daily · last Sep 20, 2017

NWS Hail Reports on September 20, 2017

30 reports
Free hail report for your home →
1.00″ hail
Sep 20, 2017
10:59 PM UTC
Hail report for September 20, 2017
Portage County · 21,633 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Amherst Junction, WI
2.00″ hail
Sep 20, 2017
10:56 PM UTC
Hail report for September 20, 2017
Portage County · 21,633 Homes in County
Hail Report Description: REPORT VIA SOCIAL MEDIA
NWS Hail Report Location: Almond, WI
1.75″ hail
Sep 20, 2017
10:51 PM UTC
Hail report for September 20, 2017
Portage County · 21,633 Homes in County
Hail Report Description: REPORT VIA SOCIAL MEDIA
NWS Hail Report Location: 4 NW Almond, WI
1.75″ hail
Sep 20, 2017
10:47 PM UTC
Hail report for September 20, 2017
Portage County · 21,633 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3 E Bancroft, WI
1.25″ hail
Sep 20, 2017
9:03 PM UTC
Hail report for September 20, 2017
Jackson County · 19,177 Homes in County
Hail Report Description: USFS PERSONNEL OBSERVED HALF DOLLAR (1.25") SIZE HAIL AND LARGE BRANCHES DOWNED AT THE WHITEWATER FALLS PARKING AREA.
NWS Hail Report Location: 7 SE Cashiers, NC
1.50″ hail
Sep 20, 2017
9:00 PM UTC
Hail report for September 20, 2017
Adams County · 12,443 Homes in County
Hail Report Description: RELAYED BY MEDIA.
NWS Hail Report Location: 2 W Strongs Prairie, WI
1.00″ hail
Sep 20, 2017
8:45 PM UTC
Hail report for September 20, 2017
Transylvania County · 14,446 Homes in County
Hail Report Description: HAIL UP TO THE SIZE OF QUARTERS AT BURLINGAME COUNTRY CLUB.
NWS Hail Report Location: 3 SW Lake Toxaway, NC
1.00″ hail
Sep 20, 2017
8:45 PM UTC
Hail report for September 20, 2017
Juneau County · 10,224 Homes in County
Hail Report Description: REPORTED AT W6895 20TH ST W... NECEDAH... WI ... NECEDAH WILDLIFE REFUGE.
NWS Hail Report Location: 2 WNW Necedah, WI
1.00″ hail
Sep 20, 2017
8:35 AM UTC
Hail report for September 20, 2017
Douglas County · 17,186 Homes in County
Hail Report Description: THE LARGEST HAILSTONES WERE THE SIZE OF QUARTERS. TIME ESTIMATED BY RADAR.
NWS Hail Report Location: 5 SE Oliver, WI
1.75″ hail
Sep 20, 2017
7:02 AM UTC
Hail report for September 20, 2017
Mille Lacs County · 9,439 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3 NNW Vineland, MN
1.00″ hail
Sep 20, 2017
7:02 AM UTC
Hail report for September 20, 2017
Stearns County · 45,866 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Sartell, MN
1.75″ hail
Sep 20, 2017
6:53 AM UTC
Hail report for September 20, 2017
Crow Wing County · 33,993 Homes in County
Hail Report Description: HAIL BEGAN APPROX 153 AM AND WAS STILL FALLING WHEN SPOTTER CALLED AT 158 AM.
NWS Hail Report Location: 5 E Pine Center, MN
1.00″ hail
Sep 20, 2017
6:21 AM UTC
Hail report for September 20, 2017
Morrison County · 13,458 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2 SW Bowlus, MN
1.25″ hail
Sep 20, 2017
5:30 AM UTC
Hail report for September 20, 2017
Swift County · 3,775 Homes in County
Hail Report Description: IN SWIFT FALLS ON CR 31.
NWS Hail Report Location: 10 WNW Sunburg, MN
1.00″ hail
Sep 20, 2017
4:52 AM UTC
Hail report for September 20, 2017
Stevens County · 3,266 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 WNW Morris, MN
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.

NWS Wind Reports on September 20, 2017

65 reports
Free hail report + wind check →
70 mph
Sep 20, 2017
11:30 PM UTC
Wind report for September 20, 2017
Shackelford County · 1,278 Homes in County
Wind Report Description: DAMAGING THUNDERSTORM WINDS BLEW TREE LIMBS DOWN... CAUSED SOME ROOF DAMAGE AND DAMAGED A DOOR AT THE COURTHOUSE.
NWS Wind Report Location: Albany, TX
60 mph
Sep 20, 2017
11:18 PM UTC
Wind report for September 20, 2017
Irion County · 625 Homes in County
Wind Report Description: SUSTAINED SOME MINOR TREE DAMAGE
NWS Wind Report Location: 3 SE Arden, TX
UNK mph
Sep 20, 2017
9:35 PM UTC
Wind report for September 20, 2017
Oconee County · 28,035 Homes in County
Wind Report Description: TREE DOWN ON RIDGE RD. TIME ESTIMATED FROM RADAR.
NWS Wind Report Location: 3 NNW Salem, SC
UNK mph
Sep 20, 2017
8:42 AM UTC
Wind report for September 20, 2017
St. Louis County · 77,023 Homes in County
Wind Report Description: TREE ACROSS ROADWAY AT HIGHWAY 21 AND SHAVER ROAD. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 3 W Babbitt, MN
UNK mph
Sep 20, 2017
8:40 AM UTC
Wind report for September 20, 2017
Burnett County · 13,322 Homes in County
Wind Report Description: TREES DOWN BLOCKING COUNTY ROAD A AND TREASURE ISLAND ROAD IN JACKSON TOWNSHIP. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 7 SW Webb Lake, WI
UNK mph
Sep 20, 2017
8:40 AM UTC
Wind report for September 20, 2017
Burnett County · 13,322 Homes in County
Wind Report Description: TREE BLOCKING AUSTIN LAKE ROAD IN SAND LAKE TOWNSHIP. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 4 E Webster, WI
UNK mph
Sep 20, 2017
8:24 AM UTC
Wind report for September 20, 2017
St. Louis County · 77,023 Homes in County
Wind Report Description: TREE DOWN BLOCKING MN-169 IN BREITUNG TOWNSHIP NEAR SOUDAN. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 1 E Soudan, MN
60 mph
Sep 20, 2017
8:22 AM UTC
Wind report for September 20, 2017
St. Louis County · 77,023 Homes in County
Wind Report Description: A FEW 5 TO 6 INCH DIAMETER BRANCHES DOWNED. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 2 WNW Duluth, MN
UNK mph
Sep 20, 2017
8:22 AM UTC
Wind report for September 20, 2017
St. Louis County · 77,023 Homes in County
Wind Report Description: TREE DOWN CROSSING ESHQUAGUMA COUNTRY ROAD OFF OF VERMILION TRAIL. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 5 SSE Mckinley, MN
UNK mph
Sep 20, 2017
8:06 AM UTC
Wind report for September 20, 2017
St. Louis County · 77,023 Homes in County
Wind Report Description: SEVERAL TREES DOWN BLOCKING OLD MESABI ROAD IN CLINTON TOWNSHIP. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 2 ENE Iron Junction, MN
UNK mph
Sep 20, 2017
8:03 AM UTC
Wind report for September 20, 2017
Carlton County · 12,744 Homes in County
Wind Report Description: A 12 TO 18 INCH DIAMETER BRANCH DOWN WHICH WAS PARTIALLY BLOCKING ROAD ON GRANT AVENUE. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 1 WSW Scanlon, MN
UNK mph
Sep 20, 2017
7:43 AM UTC
Wind report for September 20, 2017
Carlton County · 12,744 Homes in County
Wind Report Description: A FEW 10 INCH DIAMETER TREES DOWN ON MN-27 NEAR MN-73. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 2 SSE Kettle River, MN
UNK mph
Sep 20, 2017
7:42 AM UTC
Wind report for September 20, 2017
St. Louis County · 77,023 Homes in County
Wind Report Description: SEVERAL LARGE TREES DOWNED... WHICH FELL ONTO A HOME DAMAGING THE CHIMNEY AND SIDING OF THE HOME. TIME ESTIMATED FROM RADAR.
NWS Wind Report Location: Hibbing, MN
UNK mph
Sep 20, 2017
7:35 AM UTC
Wind report for September 20, 2017
Pine County · 13,193 Homes in County
Wind Report Description: FEW TREES DOWN ON COUNTY ROAD 41 NEAR WILLOW RIVER. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 4 SE Arthyde, MN
UNK mph
Sep 20, 2017
7:31 AM UTC
Wind report for September 20, 2017
Itasca County · 20,660 Homes in County
Wind Report Description: TREES DOWN ON STATE HIGHWAY 65 NEAR BUCK LAKE. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 11 NNW Keewatin, MN
Showing 15 of 65
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 September 20, 2017

3 reports
UNK category
Sep 20, 2017
2:26 AM UTC
Tornado report for September 20, 2017
Clark County · 1,361 Homes in County
Tornado Report Description: BRIEF TOUCHDOWN REPORTED BY WXNATION TV METEOROLOGIST.
NWS Tornado Report Location: Bradley, SD
UNK category
Sep 20, 2017
1:55 AM UTC
Tornado report for September 20, 2017
Clark County · 1,361 Homes in County
Tornado Report Description: TRAINED SPOTTER REPORTED TORNADO.
NWS Tornado Report Location: 4 SW Clark, SD
UNK category
Sep 20, 2017
12:57 AM UTC
Tornado report for September 20, 2017
Spink County · 2,446 Homes in County
Tornado Report Description: SPOTTER REPORTED A TORNADO JUST TO THE WEST OF TULARE.
NWS Tornado Report Location: 1 WSW Tulare, SD
Showing 3 of 3
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 September 20, 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 September 20, 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 September 20, 2017?

Our records show 30 hail, 65 wind, and 3 tornado reports on September 20, 2017, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on September 20, 2017.

What was the largest hail reported on September 20, 2017?

The largest hail size in these storm-report records on September 20, 2017 is 2.00″, reported near Almond, WI.

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 September 20, 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 September 20, 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 September 20, 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 September 20, 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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