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NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on August 11, 2017

Public hail, wind, and tornado reports across the United States on August 11, 2017 from August 11, 2017 through August 11, 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
25
Wind Reports
71
Tornado Reports
2
Max Hail Size
3.00″
Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · August 11, 2017 · 2017–present Updated  Daily · last Aug 11, 2017

NWS Hail Reports on August 11, 2017

25 reports
Free hail report for your home →
1.00″ hail
Aug 11, 2017
9:55 PM UTC
Hail report for August 11, 2017
Macomb County · 255,601 Homes in County
Hail Report Description: MOSTLY PENNY SIZE HAIL REPORTED... WITH ISOLATED QUARTER SIZE HAIL
NWS Hail Report Location: 4 ESE Mount Clemens, MI
1.00″ hail
Aug 11, 2017
6:03 PM UTC
Hail report for August 11, 2017
Sanilac County · 17,855 Homes in County
Hail Report Description: QUARTER SIZED HAIL REPORTED IN SANDUSKY
NWS Hail Report Location: Sandusky, MI
1.00″ hail
Aug 11, 2017
4:29 PM UTC
Hail report for August 11, 2017
Aroostook County · 28,443 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Houlton, ME
1.50″ hail
Aug 11, 2017
3:59 AM UTC
Hail report for August 11, 2017
Beaver County · 2,065 Homes in County
Hail Report Description: REPORTED BY VIEWER TO LOCAL MEDIA
NWS Hail Report Location: Slapout, OK
1.00″ hail
Aug 11, 2017
2:50 AM UTC
Hail report for August 11, 2017
Morton County · 1,108 Homes in County
Hail Report Description: HAIL WAS MOSTLY NICKEL SIZE.
NWS Hail Report Location: 1 W Rolla, KS
1.25″ hail
Aug 11, 2017
1:45 AM UTC
Hail report for August 11, 2017
Stanton County · 686 Homes in County
Hail Report Description: HAIL WAS QUARTER TO HALF DOLLAR SIZE.
NWS Hail Report Location: Manter, KS
1.25″ hail
Aug 11, 2017
1:40 AM UTC
Hail report for August 11, 2017
Rogers County · 31,031 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2 E Foyil, OK
2.00″ hail
Aug 11, 2017
1:35 AM UTC
Hail report for August 11, 2017
Stanton County · 686 Homes in County
Hail Report Description: HAIL WAS MOSTLY GOLF BALL SIZE OR SMALLER.
NWS Hail Report Location: 11 NW Manter, KS
1.75″ hail
Aug 11, 2017
1:10 AM UTC
Hail report for August 11, 2017
Otero County · 6,773 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2 S La Junta, CO
1.50″ hail
Aug 11, 2017
1:04 AM UTC
Hail report for August 11, 2017
Otero County · 6,773 Homes in County
Hail Report Description: SPOTTER SAID THE HAIL LASTED ABOUT 4 MINUTES.
NWS Hail Report Location: La Junta, CO
1.00″ hail
Aug 11, 2017
1:01 AM UTC
Hail report for August 11, 2017
Prowers County · 3,801 Homes in County
Hail Report Description: AT PROWERS COUNTY FAIRGROUNDS.
NWS Hail Report Location: 1 W Lamar, CO
2.00″ hail
Aug 11, 2017
1:00 AM UTC
Hail report for August 11, 2017
Nowata County · 3,254 Homes in County
Hail Report Description: PHOTO SEEN ON SOCIAL MEDIA. TIME ESTIMATED VIA RADAR.
NWS Hail Report Location: Watova, OK
1.00″ hail
Aug 11, 2017
1:00 AM UTC
Hail report for August 11, 2017
Prowers County · 3,801 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 S Lamar, CO
1.00″ hail
Aug 11, 2017
12:55 AM UTC
Hail report for August 11, 2017
Prowers County · 3,801 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 SSE Lamar, CO
3.00″ hail
Aug 11, 2017
12:54 AM UTC
Hail report for August 11, 2017
Prowers County · 3,801 Homes in County
Hail Report Description: LARGEST HAIL STONES WERE 2-3 INCHES IN DIAMETER. MOST WERE 1-2 INCHES IN DIAMETER.
NWS Hail Report Location: 4 NE Lamar, CO
Showing 15 of 25
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 August 11, 2017

71 reports
Free hail report + wind check →
UNK mph
Aug 11, 2017
11:55 PM UTC
Wind report for August 11, 2017
Caddo Parish · 76,167 Homes in County
Wind Report Description: NUMEROUS POWER LINES WERE DOWNED ALONG BERT KOUNS BETWEEN FLOURNOY LUCAS AND BUNCOMB ROADS. OVER 20 THOUSAND CUSTOMERS WERE WITHOUT POWER ACROSS SOUTH SHREVEPORT AND SOUTHERN CADDO PARISH.
NWS Wind Report Location: 6 SSW Shreveport, LA
60 mph
Aug 11, 2017
11:40 PM UTC
Wind report for August 11, 2017
Dawson County · 3,308 Homes in County
Wind Report Description: INTENSE WINDS OF 55 TO 60 MPH. TOWN OF LAMBERT 5 MILES TO THE NORTH COVERED WHITE IN HAIL.
NWS Wind Report Location: 5 S Lambert, MT
68 mph
Aug 11, 2017
11:16 PM UTC
Wind report for August 11, 2017
Clark County · 561,287 Homes in County
Wind Report Description: MEASURED WIND GUST OF 68 MPH AT HENDERSON EXECUTIVE AIRPORT.
NWS Wind Report Location: Henderson Executive Air, NV
UNK mph
Aug 11, 2017
11:14 PM UTC
Wind report for August 11, 2017
Prince William County · 87,582 Homes in County
Wind Report Description: MULTIPLE TREES KNOCKED OVER AND UPROOTED WITH A FEW SNAPPED IN HALF ALONG BLANDSFORD DR
NWS Wind Report Location: 3 SE Manassas, VA
UNK mph
Aug 11, 2017
11:14 PM UTC
Wind report for August 11, 2017
Prince William County · 87,582 Homes in County
Wind Report Description: PINEY AVE BLOCKED DUE TO DOWNED TREES
NWS Wind Report Location: 3 SSE Manassas, VA
UNK mph
Aug 11, 2017
11:09 PM UTC
Wind report for August 11, 2017
Prince William County · 87,582 Homes in County
Wind Report Description: TREE DOWN ON POWER LINES NEAR NOKESVILLE RD AND BRISTOW RD
NWS Wind Report Location: 3 NE Nokesville, VA
61 mph
Aug 11, 2017
10:55 PM UTC
Wind report for August 11, 2017
Guadalupe County · 1,325 Homes in County
Wind Report Description: KSXU AWOS.
NWS Wind Report Location: 2 ESE Santa Rosa, NM
UNK mph
Aug 11, 2017
10:46 PM UTC
Wind report for August 11, 2017
Prince William County · 87,582 Homes in County
Wind Report Description: TREE FELL INTO HOUSE AT 5900 BLOCK OF SPOUT SPRING COURT
NWS Wind Report Location: 1 N Haymarket, VA
UNK mph
Aug 11, 2017
10:36 PM UTC
Wind report for August 11, 2017
Manassas city · 6,286 Homes in County
Wind Report Description: TREE FELL INTO HOUSE IN THE 6800 BLOCK OF SAINT PAUL DR
NWS Wind Report Location: Manassas, VA
UNK mph
Aug 11, 2017
10:28 PM UTC
Wind report for August 11, 2017
Prince William County · 87,582 Homes in County
Wind Report Description: MULTIPLE TREES DOWN ALONG JOHN MARSHALL HWY IN PRINCE WILLIAM COUNTY NEAR THE FAUQUIER COUNTY LINE
NWS Wind Report Location: Broad Run, VA
UNK mph
Aug 11, 2017
10:25 PM UTC
Wind report for August 11, 2017
Fauquier County · 24,124 Homes in County
Wind Report Description: TREE DOWN ON CAR I-66 NEAR MILE MARKER 36.1
NWS Wind Report Location: Broad Run, VA
UNK mph
Aug 11, 2017
10:21 PM UTC
Wind report for August 11, 2017
Fauquier County · 24,124 Homes in County
Wind Report Description: DOWNED TREES ON THE NORTHERN PART OF BEVERLEYS MILL RD
NWS Wind Report Location: 1 SSE Broad Run, VA
UNK mph
Aug 11, 2017
10:18 PM UTC
Wind report for August 11, 2017
Fauquier County · 24,124 Homes in County
Wind Report Description: FEW LARGE TREES DOWN ALONG GEORGETOWN RD NEAR THE INTERSECTION OF BLANTYRE RD
NWS Wind Report Location: 1 WSW Broad Run, VA
UNK mph
Aug 11, 2017
10:07 PM UTC
Wind report for August 11, 2017
St. Clair County · 57,326 Homes in County
Wind Report Description: REPORT OF A COLLAPSED BOATHOUSE AND MULTIPLE TREE LIMBS AND WIRES DOWN ALONG SOUTH CHANNEL DRIVE. REPORT OF TREE DOWN ALONG NORTH CHANNEL DRIVE.
NWS Wind Report Location: 4 SW Harsens Island, MI
UNK mph
Aug 11, 2017
10:02 PM UTC
Wind report for August 11, 2017
Fauquier County · 24,124 Homes in County
Wind Report Description: DOWNED TREE NEAR WINCHESTER RD AND CARTERS RUN RD
NWS Wind Report Location: 1 SSE Marshall, VA
Showing 15 of 71
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 August 11, 2017

2 reports
UNK category
Aug 11, 2017
10:08 PM UTC
Tornado report for August 11, 2017
Fauquier County · 24,124 Homes in County
Tornado Report Description: EF0 WITH 75 MPH MAX WINDS AND MAX PATH WIDTH OF 100 YARDS. NUMEROUS TREES UPROOTED AND LARGE BRANCHES SNAPPED. SOME FELL ON POWER LINES AND HOUSES.
NWS Tornado Report Location: 1 W Broad Run, VA
UNK category
Aug 11, 2017
9:03 PM UTC
Tornado report for August 11, 2017
Monroe County · 30,942 Homes in County
Tornado Report Description: DELAYED REPORT. STORM SURVEY CONFIRMED AN EF-0 TORNADO OCCURRED NEAR STOCK ISLAND WATERFRONT. DAMAGE TO ROOFS... SHEDS... AND BOAT COVERINGS OCCURRED. NUMEROUS SMALL TREE LIMBS WERE DOWN. PLEASE SEE THE PUBLIC INFORMATION STATEMENT FOR MORE INFORMATION.
NWS Tornado Report Location: 3 E Key West, FL
Showing 2 of 2
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 August 11, 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 August 11, 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 August 11, 2017?

Our records show 25 hail, 71 wind, and 2 tornado reports on August 11, 2017, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on August 11, 2017.

What was the largest hail reported on August 11, 2017?

The largest hail size in these storm-report records on August 11, 2017 is 3.00″, reported near Lamar, CO.

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 August 11, 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 August 11, 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 August 11, 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 August 11, 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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