Heads up! Small hail spotted in these regions: Kingsport, TN • Huntsville, AL • Gadsden, AL      ATTENTION! Damaging hail detected. Hail tracking is now active for these regions: Johnson City, TN • Grand Junction, CO • Fayetteville, NC • Durham, NC • Raleigh, NC • Saint Louis, MO • Rawlins, WY • Champaign, IL • Mattoon, IL • Sebring, FL • North Port, FL • Fort Myers, FL • Tampa, FL • Hickory, NC • Charlotte, NC • Owensboro, KY • Knoxville, TN • Evansville, IN • Farmington, NM • Louisville, KY • Winston, NC • Greensboro, NC • Provo, UT • Logan, UT • Ogden, UT • Salt Lake City, UT      
HailGeeks
NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on July 20, 2017

Public hail, wind, and tornado reports across the United States on July 20, 2017 from July 20, 2017 through July 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
22
Wind Reports
168
Tornado Reports
4
Max Hail Size
2.75″
Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · July 20, 2017 · 2017–present Updated  Daily · last Jul 20, 2017

NWS Hail Reports on July 20, 2017

22 reports
Free hail report for your home →
1.00″ hail
Jul 20, 2017
11:30 PM UTC
Hail report for July 20, 2017
Piscataquis County · 11,963 Homes in County
Hail Report Description: MOSTLY PEA SIZED... BUT SOME QUARTER SIZED HAIL. PICTURE OF HAIL SENT VIA FACEBOOK.
NWS Hail Report Location: Sebec, ME
1.00″ hail
Jul 20, 2017
10:48 PM UTC
Hail report for July 20, 2017
Elbert County · 9,707 Homes in County
Hail Report Description: COVERING THE ROAD
NWS Hail Report Location: 3 NNE Ponderosa Park, CO
1.75″ hail
Jul 20, 2017
10:42 PM UTC
Hail report for July 20, 2017
Stark County · 8,960 Homes in County
Hail Report Description: RELAYED THROUGH STATE RADIO.
NWS Hail Report Location: Dickinson, ND
1.00″ hail
Jul 20, 2017
10:34 PM UTC
Hail report for July 20, 2017
Dunn County · 1,370 Homes in County
Hail Report Description: 60 MPH WINDS ALSO ESTIMATED.
NWS Hail Report Location: Halliday, ND
1.00″ hail
Jul 20, 2017
10:26 PM UTC
Hail report for July 20, 2017
Stark County · 8,960 Homes in County
Hail Report Description: INTERSTATE AT EXIT 56.
NWS Hail Report Location: 2 W Dickinson, ND
1.00″ hail
Jul 20, 2017
10:05 PM UTC
Hail report for July 20, 2017
Slope County · 398 Homes in County
Hail Report Description: A FEW QUARTERS... BUT MOSTLY PEAS. THE DURATION OF THE HAIL EVENT WAS 10 MINUTES.
NWS Hail Report Location: 4 E Three V Crossing, ND
1.00″ hail
Jul 20, 2017
9:30 PM UTC
Hail report for July 20, 2017
Slope County · 398 Homes in County
Hail Report Description: A FEW QUARTERS... BUT MOSTLY PEAS. CORRECTED FOR TIME OF THE REPORT.
NWS Hail Report Location: 4 E Three V Crossing, ND
1.25″ hail
Jul 20, 2017
9:24 PM UTC
Hail report for July 20, 2017
McKenzie County · 3,637 Homes in County
Hail Report Description: MOSTLY QUARTERS WITH SOME HALF DOLLARS.
NWS Hail Report Location: 10 S Watford City, ND
1.50″ hail
Jul 20, 2017
9:19 PM UTC
Hail report for July 20, 2017
McKenzie County · 3,637 Homes in County
Hail Report Description: RELAYED VIA SOCIAL MEDIA.
NWS Hail Report Location: 10 SSE Watford City, ND
1.00″ hail
Jul 20, 2017
9:19 PM UTC
Hail report for July 20, 2017
Orange County · 312,974 Homes in County
Hail Report Description: BROADCAST MEDIA RELAYED A REPORT OF A VIEWER-SUBMITTED PHOTO OF QUARTER-SIZED HAIL NEAR THE SAND LAKE ROAD AREA. LOCATION APPROXIMATE.
NWS Hail Report Location: 2 SSE Oak Ridge, FL
1.00″ hail
Jul 20, 2017
8:54 PM UTC
Hail report for July 20, 2017
McKenzie County · 3,637 Homes in County
Hail Report Description: A FEW QUARTERS BUT MOSTLY PEAS. 30-40 MPH WINDS.
NWS Hail Report Location: 9 E Sather Dam, ND
1.00″ hail
Jul 20, 2017
8:50 PM UTC
Hail report for July 20, 2017
McKenzie County · 3,637 Homes in County
Hail Report Description: ALSO ESTIMATED 40-50 MPH WIND GUSTS. MOSTLY PEA SIZE HAIL WITH A FEW AS BIG AS QUARTERS. HAIL LASTED ABOUT 2 MINUTES.
NWS Hail Report Location: 7 E Sather Dam, ND
1.00″ hail
Jul 20, 2017
8:50 PM UTC
Hail report for July 20, 2017
Volusia County · 180,109 Homes in County
Hail Report Description: TRAINED SPOTTER REPORTED DIME TO QUARTER SIZE HAIL IN ENTERPRISE.
NWS Hail Report Location: Enterprise, FL
1.00″ hail
Jul 20, 2017
8:20 PM UTC
Hail report for July 20, 2017
Richland County · 3,505 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 4 NE Sidney, MT
1.75″ hail
Jul 20, 2017
8:17 PM UTC
Hail report for July 20, 2017
Rio Blanco County · 2,577 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 20 SE Massadona, CO
Showing 15 of 22
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 20, 2017

168 reports
Free hail report + wind check →
UNK mph
Jul 20, 2017
11:55 PM UTC
Wind report for July 20, 2017
Marion County · 123,229 Homes in County
Wind Report Description: 911 CALL CENTER REPORTED A TREE WAS ON A HOME ON NORTHWEST 15TH PLACE. TIME ESTIMATED FROM RADAR DATA.
NWS Wind Report Location: 5 WNW Ocala, FL
UNK mph
Jul 20, 2017
11:55 PM UTC
Wind report for July 20, 2017
Alachua County · 63,712 Homes in County
Wind Report Description: 911 CALL CENTER REPORTED TREE DOWN NEAR 9700 BLOCK ON NORTHEAST WALDO ROAD. TIME ESTIMATED FROM RADAR DATA.
NWS Wind Report Location: 5 NE Gainesville Airpor, FL
UNK mph
Jul 20, 2017
11:55 PM UTC
Wind report for July 20, 2017
Penobscot County · 48,591 Homes in County
Wind Report Description: POWER LINES DOWN
NWS Wind Report Location: Levant, ME
58 mph
Jul 20, 2017
11:53 PM UTC
Wind report for July 20, 2017
Adams County · 995 Homes in County
Wind Report Description: AIRPORT ASOS REPORT.
NWS Wind Report Location: 1 NW Hettinger, ND
UNK mph
Jul 20, 2017
11:52 PM UTC
Wind report for July 20, 2017
Alachua County · 63,712 Homes in County
Wind Report Description: 911 CALL CENTER REPORTED TREE DOWN NEAR 7300 BLOCK OF NORTHEAST WALDO ROAD. TIME ESTIMATED FROM RADAR DATA.
NWS Wind Report Location: 6 NE Gainesville, FL
UNK mph
Jul 20, 2017
11:50 PM UTC
Wind report for July 20, 2017
Alachua County · 63,712 Homes in County
Wind Report Description: 911 CALL CENTER REPORTED TREES DOWN ON NORTHWEST 4TH PLACE. TIME ESTIMATED USING RADAR.
NWS Wind Report Location: 1 SSE Gainesville, FL
UNK mph
Jul 20, 2017
11:42 PM UTC
Wind report for July 20, 2017
Penobscot County · 48,591 Homes in County
Wind Report Description: WEATHER SPOTTER IN LEVANT HEARD ON SCANNER THAT TREES ARE DOWN IN STETSON.
NWS Wind Report Location: Stetson, ME
UNK mph
Jul 20, 2017
11:40 PM UTC
Wind report for July 20, 2017
Hunterdon County · 38,365 Homes in County
Wind Report Description: MULTIPLE REPORTS OF TREES AND POWERLINES DOWN.
NWS Wind Report Location: 3 S Ringoes, NJ
UNK mph
Jul 20, 2017
11:40 PM UTC
Wind report for July 20, 2017
Hunterdon County · 38,365 Homes in County
Wind Report Description: REPORTS OF TREES DOWN. TIME ESTIMATED FROM RADAR.
NWS Wind Report Location: Stockton, NJ
UNK mph
Jul 20, 2017
11:31 PM UTC
Wind report for July 20, 2017
Marion County · 123,229 Homes in County
Wind Report Description: 911 CALL CENTER REPORTED WIRES DOWN. TIME ESTIMATED FROM RADAR DATA.
NWS Wind Report Location: 2 WNW Ocala, FL
UNK mph
Jul 20, 2017
11:30 PM UTC
Wind report for July 20, 2017
Marion County · 123,229 Homes in County
Wind Report Description: 911 CALL CENTER REPORTED WIRES DOWN ON NORTHWEST 2ND AVENUE. TIME ESTIMATED FROM RADAR DATA.
NWS Wind Report Location: 1 NNW Ocala, FL
UNK mph
Jul 20, 2017
11:30 PM UTC
Wind report for July 20, 2017
Marion County · 123,229 Homes in County
Wind Report Description: 911 CALL CENTER REPORTED WIRES DOWN ON NORTHEAST 18TH AVENUE. TIME ESTIMATED FROM RADAR DATA.
NWS Wind Report Location: 3 NNE Ocala, FL
UNK mph
Jul 20, 2017
11:30 PM UTC
Wind report for July 20, 2017
Marion County · 123,229 Homes in County
Wind Report Description: 911 CALL CENTER REPORTED TREE DOWN NORTHEAST 18TH STREET. TIME ESTIMATED FROM RADAR DATA.
NWS Wind Report Location: 1 N Ocala, FL
UNK mph
Jul 20, 2017
11:30 PM UTC
Wind report for July 20, 2017
Marion County · 123,229 Homes in County
Wind Report Description: 911 CALL CENTER REPORTED WIRES DOWN ON NORTHEAST 4TH PLACE. TIME ESTIMATED FROM RADAR DATA.
NWS Wind Report Location: 4 E Ocala, FL
UNK mph
Jul 20, 2017
11:30 PM UTC
Wind report for July 20, 2017
Penobscot County · 48,591 Homes in County
Wind Report Description: REPORTS OF TREES DOWN ALL OVER THE ROADS BETWEEN CORINNA AND ETNA. REPORT VIA FACEBOOK. TIME ESTIMATED BASED ON RADAR.
NWS Wind Report Location: Corinna, ME
Showing 15 of 168
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 20, 2017

4 reports
UNK category
Jul 20, 2017
5:40 PM UTC
Tornado report for July 20, 2017
Allegany County · 17,133 Homes in County
Tornado Report Description: STORM SURVEY CONFIRMED EF1 TORNADO. SEVERAL HOMES WERE DAMAGED AND A BARN SEVERELY DAMAGED. SEVERAL SHEDS OR SMALL OUTBUILDINGS WERE TIPPED AND MOVED. NUMEROUS LARGE TREES WERE SHREDDED AND DOWNED. LSR LOCATION IS CENTER POINT OF TRACK
NWS Tornado Report Location: 2 N Angelica, NY
UNK category
Jul 20, 2017
4:56 PM UTC
Tornado report for July 20, 2017
Erie County · 258,563 Homes in County
Tornado Report Description: STORM SURVEY CONFIRMED EF1 TORNADO. SEVERAL STRUCTURES DAMAGED AND A SIGNIFICANT AMOUNT OF TREE DAMAGE. TRACKS OF THE NORFOLK SOUTHERN RAILWAY WERE BLOCKED BY LARGE TREES IN SEVERAL LOCATIONS. NO DIRECT INJURIES.
NWS Tornado Report Location: 1 NNW Holland, NY
UNK category
Jul 20, 2017
4:39 PM UTC
Tornado report for July 20, 2017
Erie County · 258,563 Homes in County
Tornado Report Description: STORM SURVEY CONFIRMED EF2 TORNADO. DAMAGE TO THE HAMBURG FAIRGROUNDS AND CHESTNUT RIDGE PARK. NO DIRECT INJURIES.
NWS Tornado Report Location: 4 E Hamburg, NY
UNK category
Jul 20, 2017
1:22 AM UTC
Tornado report for July 20, 2017
Butte County · 2,871 Homes in County
Tornado Report Description: BRIEF TORNADO TOUCHDOWN THAT LASTED ABOUT 1 MINUTE BASED ON STORM CHASER PHOTO AND RADAR DATA. ESTIMATED EF-0 WITH HALF MILE PATH LENGTH AND 20 YARD PATH WIDTH.
NWS Tornado Report Location: 4 NW Newell, SD
Showing 4 of 4
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 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 July 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 July 20, 2017?

Our records show 22 hail, 168 wind, and 4 tornado reports on July 20, 2017, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on July 20, 2017.

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

The largest hail size in these storm-report records on July 20, 2017 is 2.75″, reported near Amelia, 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 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 July 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 July 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 July 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.

Free Hail Report By Address

Check Your Address in Seconds

Free hail report for any address in the contiguous U.S.

Get a Free Hail Report

100% free. No phone or email required.