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NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on August 20, 2004

Public hail, wind, and tornado reports across the United States on August 20, 2004 from August 20, 2004 through August 20, 2004, 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

43

Wind Reports

90

Tornado Reports

3

Max Hail Size

2.75″

Source NOAA SPC · NWS Local Storm Reports Coverage United States · August 20, 2004 · 2004–present Updated Daily · last Aug 20, 2004

NWS Hail Reports on August 20, 2004

43 reports

Free hail report for your home →

0.75″ hail

Aug 20, 2004
8:00 PM CST

Hail report for August 20, 2004

Nacogdoches County · 16,506 Homes in County

Hail Report Description: Hail fell in the Etoile community.

NWS Hail Report Location: 10 S Chireno, TX

0.75″ hail

Aug 20, 2004
5:33 PM MST

Hail report for August 20, 2004

Lake County · 12,800 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: Big Arm, MT

1.25″ hail

Aug 20, 2004
6:55 PM EST

Hail report for August 20, 2004

Franklin County · 45,640 Homes in County

Hail Report Description: Thunderstorms produced half dollar size hail /1.25 inch/ one mile south of Greencastle.

NWS Hail Report Location: 1 S Greencastle, PA

2.75″ hail

Aug 20, 2004
5:48 PM CST

Hail report for August 20, 2004

Runnels County · 4,458 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: Ballinger, TX

1.00″ hail

Aug 20, 2004
6:46 PM EST

Hail report for August 20, 2004

Franklin County · 45,640 Homes in County

Hail Report Description: Thunderstorms produced quarter size hail /1.00 inch/ in Greencastle.

NWS Hail Report Location: Greencastle, PA

1.00″ hail

Aug 20, 2004
5:35 PM CST

Hail report for August 20, 2004

Runnels County · 4,458 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: Rowena, TX

0.88″ hail

Aug 20, 2004
6:10 PM EST

Hail report for August 20, 2004

Gordon County · 17,632 Homes in County

Hail Report Description: The public reported nickel-sized hail.

NWS Hail Report Location: Oakman, GA

0.75″ hail

Aug 20, 2004
4:50 PM CST

Hail report for August 20, 2004

Vernon Parish · 11,116 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: 5 W Anacoco, LA

0.88″ hail

Aug 20, 2004
5:40 PM EST

Hail report for August 20, 2004

Berkshire County · 45,896 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: Williamstown, MA

1.00″ hail

Aug 20, 2004
5:32 PM EST

Hail report for August 20, 2004

Rensselaer County · 41,465 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: Stephentown, NY

0.88″ hail

Aug 20, 2004
5:22 PM EST

Hail report for August 20, 2004

Rensselaer County · 41,465 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: East Nassau, NY

1.00″ hail

Aug 20, 2004
2:20 PM PST

Hail report for August 20, 2004

Lander County · 1,066 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: Battle Mtn, NV

0.88″ hail

Aug 20, 2004
5:15 PM EST

Hail report for August 20, 2004

Middlesex County · 310,073 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: Marlborough, MA

1.00″ hail

Aug 20, 2004
5:11 PM EST

Hail report for August 20, 2004

Whitfield County · 26,161 Homes in County

Hail Report Description: The public reported quarter-sized hail in the area between Cedar Valley and Toonnerville. A National Weather Service damage survey conducted in the area confirmed that hail had occurred as numerous leaves were stripped from trees in the area. Wind gusts to 60 mph accompanied the hail.

NWS Hail Report Location: 3 NNW Dawnville, GA

1.00″ hail

Aug 20, 2004
5:10 PM EST

Hail report for August 20, 2004

Armstrong County · 25,047 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: 1 S South Bethlehem, PA

Showing 15 of 43

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, 2004

90 reports

Free hail report + wind check →

58 mph

Aug 20, 2004
10:00 PM EST

Wind report for August 20, 2004

Anderson County · 65,340 Homes in County

Wind Report Description: A few trees were blown down.

NWS Wind Report Location: Anderson, SC

58 mph

Aug 20, 2004
10:00 PM EST

Wind report for August 20, 2004

Greenville County · 157,677 Homes in County

Wind Report Description: Trees were blown down in scattered locations throughout the city, particularly on the west side. One tree fell on an automobile.

NWS Wind Report Location: Greenville, SC

58 mph

Aug 20, 2004
9:30 PM EST

Wind report for August 20, 2004

Pickens County · 36,052 Homes in County

Wind Report Description: A couple of trees were blown down at Orchard Dr and highway 8.

NWS Wind Report Location: Easley, SC

58 mph

Aug 20, 2004
9:30 PM EST

Wind report for August 20, 2004

Jackson County · 19,177 Homes in County

Wind Report Description: Large tree limbs were blown down. There were also sporadic power outages.

NWS Wind Report Location: Cullowhee, NC

58 mph

Aug 20, 2004
9:00 PM EST

Wind report for August 20, 2004

Anderson County · 65,340 Homes in County

Wind Report Description: Several trees were blown down. A canopy was blown off a home.

NWS Wind Report Location: Townville, SC

58 mph

Aug 20, 2004
8:50 PM EST

Wind report for August 20, 2004

Stephens County · 8,499 Homes in County

Wind Report Description: Trees and power lines were blown down.

NWS Wind Report Location: Toccoa, GA

58 mph

Aug 20, 2004
8:50 PM EST

Wind report for August 20, 2004

Hart County · 9,040 Homes in County

Wind Report Description: Trees and power lines were blown down.

NWS Wind Report Location: Hartwell, GA

58 mph

Aug 20, 2004
8:50 PM EST

Wind report for August 20, 2004

Oconee County · 28,035 Homes in County

Wind Report Description: Several trees were blown down. There were also sporadic power outages throughout the county.

NWS Wind Report Location: Walhalla, SC

58 mph

Aug 20, 2004
8:32 PM EST

Wind report for August 20, 2004

Bleckley County · 3,417 Homes in County

Wind Report Description: The Bleckley County 911 Center reported that several trees were down on Vernon Road at U.S. Highway 23/Georgia Highway 87 in the town of Royal.

NWS Wind Report Location: 2 NE Coley, GA

58 mph

Aug 20, 2004
8:30 PM EST

Wind report for August 20, 2004

Rockingham County · 89,085 Homes in County

Wind Report Description: No National Weather Service description provided.

NWS Wind Report Location: Hampton Falls, NH

58 mph

Aug 20, 2004
8:30 PM EST

Wind report for August 20, 2004

Morgan County · 6,684 Homes in County

Wind Report Description: The Morgan County 911 Center reported that a number of trees had been blown down throughout the county.

NWS Wind Report Location: Countywide, GA

58 mph

Aug 20, 2004
8:25 PM EST

Wind report for August 20, 2004

Rabun County · 9,563 Homes in County

Wind Report Description: Trees and power lines were blown down.

NWS Wind Report Location: Clayton, GA

63 mph

Aug 20, 2004
8:15 PM EST

Wind report for August 20, 2004

Habersham County · 13,187 Homes in County

Wind Report Description: Numerous trees and power lines were blown down.

NWS Wind Report Location: Clarkesville, GA

58 mph

Aug 20, 2004
8:10 PM EST

Wind report for August 20, 2004

Union County · 11,885 Homes in County

Wind Report Description: The Union County 911 Center reported that several trees had been blown down.

NWS Wind Report Location: 5 SE Blairsville, GA

64 mph

Aug 20, 2004
7:02 PM CST

Wind report for August 20, 2004

McCulloch County · 3,323 Homes in County

Wind Report Description: No National Weather Service description provided.

NWS Wind Report Location: Voca, TX

Showing 15 of 90

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, 2004

3 reports

F0 category

Aug 20, 2004
5:37 PM EST

Tornado report for August 20, 2004

Berkshire County · 45,896 Homes in County

Tornado Report Description: Survey team observed several structures with shingle damage to roofs. Many limbs and several trees were knocked down. Upon observation these trees were determined to be shallow rooted. Roofs dislodged from clubhouse and dugout of Waconah Park baseball stadium. Eyewitnesses with various vantage points reported observing rotating debris consistent with a tornado. Additional reports indicate a portion of the fencing at Waconah Park was also knocked down, and bleachers along the left field were pushed backward. In addition, trees and wires were downed on Tyler Street and Woodlawn Avenue, and two moored motor boats at Burbank Park were flipped over and partially submerged. There was also a report of a tree falling on a house on Charles Street. Top winds estimated at 70 mph.

NWS Tornado Report Location: Pittsfield, MA

F0 category

Aug 20, 2004
2:35 PM CST

Tornado report for August 20, 2004

Moore County · 2,460 Homes in County

Tornado Report Description: A brief and short lived weak tornado touched down and uprooted two trees and damaged a few power lines before dissipating.

NWS Tornado Report Location: 3 W Lynchburg, TN

F0 category

Aug 20, 2004
2:23 PM CST

Tornado report for August 20, 2004

Jackson County · 17,538 Homes in County

Tornado Report Description: A short lived weak tornado touched down and uprooted three trees one mile west of Skyline.

NWS Tornado Report Location: 1 W Skyline, AL

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 August 20, 2004 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, 2004? 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.

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Frequently asked questions

for homeowners, buyers & sellers

How many storm reports were recorded on August 20, 2004?

Our records show 43 hail, 90 wind, and 3 tornado reports on August 20, 2004, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on August 20, 2004.

What was the largest hail reported on August 20, 2004?

The largest hail size in these storm-report records on August 20, 2004 is 2.75″, reported near Ballinger, TX.

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, 2004 — 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, 2004 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, 2004?

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, 2004 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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