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NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on August 18, 2017

Public hail, wind, and tornado reports across the United States on August 18, 2017 from August 18, 2017 through August 18, 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
27
Wind Reports
61
Tornado Reports
9
Max Hail Size
1.75″
Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · August 18, 2017 · 2017–present Updated  Daily · last Aug 18, 2017

NWS Hail Reports on August 18, 2017

27 reports
Free hail report for your home →
1.25″ hail
Aug 18, 2017
11:55 PM UTC
Hail report for August 18, 2017
Washington County · 64,515 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 6 SE Fayetteville, AR
1.50″ hail
Aug 18, 2017
11:55 PM UTC
Hail report for August 18, 2017
Washington County · 64,515 Homes in County
Hail Report Description: STONEBRIDGE MEADOWS SUBDIVISION.
NWS Hail Report Location: 5 SE Fayetteville, AR
1.00″ hail
Aug 18, 2017
11:53 PM UTC
Hail report for August 18, 2017
Washington County · 64,515 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Fayetteville, AR
1.00″ hail
Aug 18, 2017
11:51 PM UTC
Hail report for August 18, 2017
Clinton County · 7,438 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Lathrop, MO
1.00″ hail
Aug 18, 2017
11:50 PM UTC
Hail report for August 18, 2017
Jackson County · 221,646 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 4 NE Independence, MO
1.50″ hail
Aug 18, 2017
11:45 PM UTC
Hail report for August 18, 2017
Clay County · 75,791 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 S Smithville, MO
1.00″ hail
Aug 18, 2017
11:45 PM UTC
Hail report for August 18, 2017
Murray County · 3,970 Homes in County
Hail Report Description: PEA TO QUARTER SIZE HAIL.
NWS Hail Report Location: Lake Wilson, MN
1.00″ hail
Aug 18, 2017
11:40 PM UTC
Hail report for August 18, 2017
Cottonwood County · 4,365 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 8 NNE Jeffers, MN
1.00″ hail
Aug 18, 2017
11:39 PM UTC
Hail report for August 18, 2017
Lee County · 12,522 Homes in County
Hail Report Description: REPORT VIA FACEBOOK
NWS Hail Report Location: Wever, IA
1.00″ hail
Aug 18, 2017
11:00 PM UTC
Hail report for August 18, 2017
Lyon County · 8,172 Homes in County
Hail Report Description: QUARTER SIZE HAIL AND WIDESPREAD ROAD FLOODING REPORTED IN LYND VIA SOCIAL MEDIA.
NWS Hail Report Location: Lynd, MN
1.00″ hail
Aug 18, 2017
10:54 PM UTC
Hail report for August 18, 2017
Lincoln County · 2,730 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 E Lake Benton, MN
1.00″ hail
Aug 18, 2017
10:22 PM UTC
Hail report for August 18, 2017
Benton County · 88,214 Homes in County
Hail Report Description: SOCIAL MEDIA REPORT.
NWS Hail Report Location: Gentry, AR
1.00″ hail
Aug 18, 2017
9:30 PM UTC
Hail report for August 18, 2017
Deuel County · 1,848 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2 WSW Moritz, SD
1.00″ hail
Aug 18, 2017
9:07 PM UTC
Hail report for August 18, 2017
Deuel County · 1,848 Homes in County
Hail Report Description: 61 MPH WINDS AND QUARTER SIZE HAIL.
NWS Hail Report Location: 1 SW Tunerville, SD
1.50″ hail
Aug 18, 2017
8:51 PM UTC
Hail report for August 18, 2017
Grant County · 2,677 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3 E Albee, SD
Showing 15 of 27
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 18, 2017

61 reports
Free hail report + wind check →
UNK mph
Aug 18, 2017
11:57 PM UTC
Wind report for August 18, 2017
Herkimer County · 23,082 Homes in County
Wind Report Description: MULTIPLE TREES DOWN ON SIMPSON RD
NWS Wind Report Location: 1 NW Gravesville, NY
UNK mph
Aug 18, 2017
11:57 PM UTC
Wind report for August 18, 2017
Herkimer County · 23,082 Homes in County
Wind Report Description: MULTIPLE TREES DOWN IN ROAD MILITARY RD NEAR GAUSS RD
NWS Wind Report Location: 3 NNW Gravesville, NY
UNK mph
Aug 18, 2017
11:57 PM UTC
Wind report for August 18, 2017
Herkimer County · 23,082 Homes in County
Wind Report Description: TREES AND WIRES DOWN ON DOVER ROAD
NWS Wind Report Location: 3 NW Gravesville, NY
UNK mph
Aug 18, 2017
11:56 PM UTC
Wind report for August 18, 2017
Washington County · 64,515 Homes in County
Wind Report Description: EXTENSIVE TREE DAMAGE WITHIN NEIGHBORHOOD WEST OF I-49 IN FAYETTEVILLE. SOCIAL MEDIA REPORT WITH PICS.
NWS Wind Report Location: Fayetteville, AR
UNK mph
Aug 18, 2017
11:53 PM UTC
Wind report for August 18, 2017
Washington County · 64,515 Homes in County
Wind Report Description: POWER LINES DAMAGED NEAR MORNINGSIDE DRIVE AND 15TH STREET IN FAYETTEVILLE. SOCIAL MEDIA REPORT.
NWS Wind Report Location: Fayetteville, AR
UNK mph
Aug 18, 2017
11:51 PM UTC
Wind report for August 18, 2017
St. Mary's County · 33,775 Homes in County
Wind Report Description: TREE DOWN ON POWER LINES NEAR THE INTERSECTION OF NEW MARKET TURNER ROAD AND HIDDEN VALLEY LANE.
NWS Wind Report Location: 3 ENE Mechanicsville, MD
61 mph
Aug 18, 2017
11:49 PM UTC
Wind report for August 18, 2017
Hanover County · 37,402 Homes in County
Wind Report Description: ASOS STATION OFP... HANOVER COUNTY MUNICIPAL.
NWS Wind Report Location: Hanover Airport, VA
UNK mph
Aug 18, 2017
11:48 PM UTC
Wind report for August 18, 2017
Hancock County · 7,380 Homes in County
Wind Report Description: TREE AND POWER LINES DOWN. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 6 SSE Warsaw, IL
60 mph
Aug 18, 2017
11:45 PM UTC
Wind report for August 18, 2017
Murray County · 3,970 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Lake Wilson, MN
UNK mph
Aug 18, 2017
11:44 PM UTC
Wind report for August 18, 2017
St. Mary's County · 33,775 Homes in County
Wind Report Description: 2 TREES DOWN IN CHAPTICO.
NWS Wind Report Location: Chaptico, MD
UNK mph
Aug 18, 2017
11:42 PM UTC
Wind report for August 18, 2017
Essex County · 4,231 Homes in County
Wind Report Description: TREES DOWN ACROSS NORTHERN ESSEX COUNTY. REPORTS OF WIND DEBRIS IN THE ROAD AS FAR SOUTH AS TAPPAHANNOCK.
NWS Wind Report Location: Champlain, VA
UNK mph
Aug 18, 2017
11:42 PM UTC
Wind report for August 18, 2017
Washington County · 64,515 Homes in County
Wind Report Description: POWER POLES BROKEN. TREE LIMBS TO 3 INCHES IN DIAMETER BROKEN.
NWS Wind Report Location: 3 WNW Fayetteville, AR
UNK mph
Aug 18, 2017
11:33 PM UTC
Wind report for August 18, 2017
Monmouth County · 178,168 Homes in County
Wind Report Description: DOWNED TREE ON POWER LINES ON FORT PLAINS ROAD
NWS Wind Report Location: Wyckoff Mills, NJ
UNK mph
Aug 18, 2017
11:28 PM UTC
Wind report for August 18, 2017
Washington County · 64,515 Homes in County
Wind Report Description: POWER LINES DOWN ON HOWARD NICKELL ROAD.
NWS Wind Report Location: Wheeler, AR
60 mph
Aug 18, 2017
11:25 PM UTC
Wind report for August 18, 2017
Lyon County · 8,172 Homes in County
Wind Report Description: TRAINED STORM SPOTTER ESTIMATED WINDS GUSTING TO 60 MPH.
NWS Wind Report Location: Garvin, MN
Showing 15 of 61
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 18, 2017

9 reports
UNK category
Aug 18, 2017
9:40 PM UTC
Tornado report for August 18, 2017
Indian River County · 56,241 Homes in County
Tornado Report Description: INDIAN RIVER COUNTY DEPUTY AND RELAYED VIDEOS CONFIRM A BRIEF LANDSPOUT TOUCHED DOWN IN AN UNPOPULATED MARSH AREA. TIME ESTIMATED.
NWS Tornado Report Location: 4 E Blue Cypress Lake, FL
UNK category
Aug 18, 2017
12:46 AM UTC
Tornado report for August 18, 2017
Scott County · 40,267 Homes in County
Tornado Report Description: TORNADO DEVELOPED NEAR THE INTERSECTION OF 154TH ST. NW AND MYSTIC LAKE DRIVE AND TRACKED 1.2 MILES NORTHWEST. FENCING AND TENTS WERE BLOWN OVER... TREES WERE UPROOTED... AND A FISH HOUSE WAS SPUN AROUND. MAXIMUM ESTIMATED WIND 70 MPH.
NWS Tornado Report Location: 2 WNW Prior Lake, MN
UNK category
Aug 18, 2017
12:28 AM UTC
Tornado report for August 18, 2017
Stephenson County · 16,193 Homes in County
Tornado Report Description: AN EF0 TORNADO DEVELOPED AT THE SAME TIME AS A TORNADO JUST TO THE SOUTH... AND DAMAGED TREES ON ITS NORTH/NORTHEAST PATH. MAXIMUM WINDS ESTIMATED AROUND 80 MPH. MAXIMUM PATH WIDTH AROUND 20 YARDS. PATH LENGTH AROUND 3.3 MILES. TORNADO ENDED AROUND 736 PM.
NWS Tornado Report Location: 5 WNW Freeport, IL
UNK category
Aug 18, 2017
12:22 AM UTC
Tornado report for August 18, 2017
Sanilac County · 17,855 Homes in County
Tornado Report Description: REPORT OF OBSERVED TOUCHDOWN. NO DAMAGE ASSOCIATED WITH THIS REPORT AT THIS TIME.
NWS Tornado Report Location: 2 S Decker, MI
UNK category
Aug 18, 2017
12:22 AM UTC
Tornado report for August 18, 2017
Jo Daviess County · 11,161 Homes in County
Tornado Report Description: AN EF1 TORNADO TRACKED NORTHEAST... CAUSING EXTENSIVE TREE DAMAGE. LARGE WALNUT TREES WERE UPROOTED AND SNAPPED OFF AROUND 10 FEET FROM THE BASE. MAXIMUM PATH WIDTH WAS AROUND 60 YARDS... AND PATH LENGTH WAS AROUND A HALF MILE.
NWS Tornado Report Location: 5 WNW Elizabeth, IL
UNK category
Aug 18, 2017
12:21 AM UTC
Tornado report for August 18, 2017
Stephenson County · 16,193 Homes in County
Tornado Report Description: A WEAK EF1 TORNADO TRACKED NORTH/NORTHEAST... DAMAGING NUMEROUS TREES. TWO HOMES ALSO SUFFERED MINOR DAMAGE. MAX WINDS ESTIMATED AROUND 90 MPH. MAXIMUM PATH WIDTH AROUND 75 YEARDS. PATH LENGTH AROUND 2.8 MILES. TORNADO ENDED AROUND 728 PM.
NWS Tornado Report Location: 5 WSW Freeport, IL
UNK category
Aug 18, 2017
12:16 AM UTC
Tornado report for August 18, 2017
Sanilac County · 17,855 Homes in County
Tornado Report Description: REPORT OF MULTIPLE TREES KNOCKED DOWN.
NWS Tornado Report Location: 5 E Kingston, MI
UNK category
Aug 18, 2017
12:13 AM UTC
Tornado report for August 18, 2017
Tuscola County · 19,884 Homes in County
Tornado Report Description: REPORT OF POSSIBLE TORNADO TOUCHDOWN. NUMEROUS TREES DOWN... A TRAILER IS FLIPPED OVER... AND METAL/SHINGLES TORN FROM ROOF.
NWS Tornado Report Location: 4 E Kingston, MI
UNK category
Aug 18, 2017
12:09 AM UTC
Tornado report for August 18, 2017
Tuscola County · 19,884 Homes in County
Tornado Report Description: REPORT OF TORNADO TOUCHDOWN VIA SOCIAL MEDIA -- VIDEO. EXACT TIMING AND LOCATION UNCONFIRMED AT THIS TIME.
NWS Tornado Report Location: 4 E Kingston, MI
Showing 9 of 9
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 18, 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 18, 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 18, 2017?

Our records show 27 hail, 61 wind, and 9 tornado reports on August 18, 2017, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on August 18, 2017.

What was the largest hail reported on August 18, 2017?

The largest hail size in these storm-report records on August 18, 2017 is 1.75″, reported near Milbank, SD.

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 18, 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 18, 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 18, 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 18, 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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