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NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on August 20, 2014

Public hail, wind, and tornado reports across the United States on August 20, 2014 from August 20, 2014 through August 20, 2014, 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
52
Wind Reports
176
Tornado Reports
2
Max Hail Size
1.75″
Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · August 20, 2014 · 2014–present Updated  Daily · last Aug 20, 2014

NWS Hail Reports on August 20, 2014

52 reports
Free hail report for your home →
1.00″ hail
Aug 20, 2014
11:15 PM CST-6
Hail report for August 20, 2014
Roberts County · 3,945 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 11.03 ENE Corona, SD
1.00″ hail
Aug 20, 2014
11:00 PM CST-6
Hail report for August 20, 2014
Edmunds County · 1,651 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .97 E Roscoe, SD
1.00″ hail
Aug 20, 2014
9:15 PM CST-6
Hail report for August 20, 2014
Holt County · 4,173 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.16 WSW Swan Lake, NE
1.00″ hail
Aug 20, 2014
7:15 PM MST-7
Hail report for August 20, 2014
Corson County · 1,121 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 4.26 SSE Mahto, SD
1.00″ hail
Aug 20, 2014
7:05 PM MST-7
Hail report for August 20, 2014
Corson County · 1,121 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 5.83 W Wakpala, SD
1.50″ hail
Aug 20, 2014
7:18 PM CST-6
Hail report for August 20, 2014
Lincoln County · 12,113 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 11.83 ENE Wellfleet, NE
1.75″ hail
Aug 20, 2014
6:54 PM CST-6
Hail report for August 20, 2014
Lincoln County · 12,113 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 6.12 ESE Wellfleet, NE
1.75″ hail
Aug 20, 2014
6:54 PM CST-6
Hail report for August 20, 2014
Frontier County · 1,110 Homes in County
Hail Report Description: Car windows were broken by golf ball sized hail.
NWS Hail Report Location: 3.77 WNW Maywood, NE
1.00″ hail
Aug 20, 2014
6:48 PM CST-6
Hail report for August 20, 2014
Frontier County · 1,110 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3.22 WSW Maywood, NE
0.75″ hail
Aug 20, 2014
5:25 PM MST-7
Hail report for August 20, 2014
Salt Lake County · 267,522 Homes in County
Hail Report Description: Penny sized hail was reported in Riverton.
NWS Hail Report Location: .53 W Riverton, UT
0.75″ hail
Aug 20, 2014
6:15 PM CST-6
Hail report for August 20, 2014
Ward County · 17,129 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3.45 N Sawyer, ND
1.25″ hail
Aug 20, 2014
6:00 PM CST-6
Hail report for August 20, 2014
Burleigh County · 24,232 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 5.55 S Baldwin, ND
1.00″ hail
Aug 20, 2014
5:54 PM CST-6
Hail report for August 20, 2014
Hitchcock County · 1,312 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.22 ESE Beverly, NE
1.00″ hail
Aug 20, 2014
4:30 PM MST-7
Hail report for August 20, 2014
Corson County · 1,121 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 7.62 N Athboy, SD
1.00″ hail
Aug 20, 2014
4:55 PM CST-6
Hail report for August 20, 2014
Morton County · 10,416 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 4.93 S Hebron, ND
Showing 15 of 52
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 20, 2014

176 reports
Free hail report + wind check →
70 mph
Aug 20, 2014
11:40 PM CST-6
Wind report for August 20, 2014
Buffalo County · 14,038 Homes in County
Wind Report Description: Wind gusts were estimated to be near 70 MPH. Trees branches were downed, a pole barn was damaged and a trailer was tipped over.
NWS Wind Report Location: 3.57 W Kearney, NE
70 mph
Aug 20, 2014
11:34 PM CST-6
Wind report for August 20, 2014
Kearney County · 2,681 Homes in County
Wind Report Description: Wind gusts were estimated to be near 70 MPH. Multiple tree branches were downed, some as large as 6 inches in diameter. A small fruit tree was also uprooted.
NWS Wind Report Location: 5.29 W Newark, NE
60 mph
Aug 20, 2014
10:00 PM CST-6
Wind report for August 20, 2014
McPherson County · 1,085 Homes in County
Wind Report Description: Sixty mph winds were estimated.
NWS Wind Report Location: 9.33 SW Leola, SD
60 mph
Aug 20, 2014
9:45 PM CST-6
Wind report for August 20, 2014
Clay County · 4,517 Homes in County
Wind Report Description: Numerous trees and tree branches were blown down in Xenia.
NWS Wind Report Location: N Xenia, IL
60 mph
Aug 20, 2014
9:35 PM CST-6
Wind report for August 20, 2014
Clay County · 4,517 Homes in County
Wind Report Description: Numerous trees and tree branches were blown down in Clay City.
NWS Wind Report Location: N Clay City, IL
60 mph
Aug 20, 2014
9:20 PM CST-6
Wind report for August 20, 2014
Clay County · 4,517 Homes in County
Wind Report Description: Two trees were blown down in Flora.
NWS Wind Report Location: N Flora, IL
60 mph
Aug 20, 2014
8:00 PM MST-7
Wind report for August 20, 2014
Dewey County · 1,389 Homes in County
Wind Report Description: Sixty mph winds were estimated by the public.
NWS Wind Report Location: 1.19 NE La Plant, SD
60 mph
Aug 20, 2014
8:45 PM CST-6
Wind report for August 20, 2014
Emmons County · 1,669 Homes in County
Wind Report Description: Small tree branches were broken and yard furniture was damaged.
NWS Wind Report Location: 8.12 E Linton, ND
59 mph
Aug 20, 2014
8:30 PM CST-6
Wind report for August 20, 2014
Walworth County · 2,321 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: .84 NW Mobridge, SD
58 mph
Aug 20, 2014
9:15 PM EST-5
Wind report for August 20, 2014
Amelia County · 4,551 Homes in County
Wind Report Description: State officials reported several trees down in the northern portions of the county.
NWS Wind Report Location: 2.82 N Amelia Hill Top Arpt, VA
60 mph
Aug 20, 2014
7:15 PM MST-7
Wind report for August 20, 2014
Dewey County · 1,389 Homes in County
Wind Report Description: Sixty mph winds were estimated by the public.
NWS Wind Report Location: 2.07 S Trail City, SD
71 mph
Aug 20, 2014
7:10 PM MST-7
Wind report for August 20, 2014
Corson County · 1,121 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 3.88 W Trail City, SD
82 mph
Aug 20, 2014
8:05 PM CST-6
Wind report for August 20, 2014
Custer County · 4,676 Homes in County
Wind Report Description: Thunderstorm wind gusts measured 80 MPH on a home weather station. Meanwhile, hail up to the size of walnuts punched several holes in siding at a farmstead.
NWS Wind Report Location: 18.69 SW Callaway, NE
60 mph
Aug 20, 2014
8:05 PM CST-6
Wind report for August 20, 2014
Madison County · 93,884 Homes in County
Wind Report Description: Thunderstorm winds blew down several large tree limbs.
NWS Wind Report Location: 2 NW Marine, IL
58 mph
Aug 20, 2014
8:57 PM EST-5
Wind report for August 20, 2014
Powhatan County · 11,277 Homes in County
Wind Report Description: State officials reported a tree down on a house in Lake Powhatan. Officials also reported several trees down across the southwest portions of the county.
NWS Wind Report Location: 1.38 S Mohemenco, VA
Showing 15 of 176
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 20, 2014

2 reports
EF0 category
Aug 20, 2014
12:45 PM MST-7
Tornado report for August 20, 2014
Custer County · 2,128 Homes in County
Tornado Report Description: Multiple photographs of funnel cloud with a brief touch down 2 miles southeast of Mackay.
NWS Tornado Report Location: 2 SE Mackay, ID
EF0 category
Aug 20, 2014
1:04 PM EST-5
Tornado report for August 20, 2014
Macomb County · 255,601 Homes in County
Tornado Report Description: A brief EF0 tornado touched down around 204 pm EDT on Place Road between 29 and 30 mile road in Lenox Township. Maximum wind speeds were estimated to be 75 mph. Thin medal sheds were destroyed, with minor tree damage. This weak tornado was captured on video.
NWS Tornado Report Location: 2.18 E Ray Center, MI
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 20, 2014 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 20, 2014? 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 20, 2014?

Our records show 52 hail, 176 wind, and 2 tornado reports on August 20, 2014, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on August 20, 2014.

What was the largest hail reported on August 20, 2014?

The largest hail size in these storm-report records on August 20, 2014 is 1.75″, reported near .52 E De Soto, IA.

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 20, 2014 — 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 20, 2014 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 20, 2014?

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 20, 2014 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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