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HailGeeks
NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on September 4, 2012

Public hail, wind, and tornado reports across the United States on September 4, 2012 from September 4, 2012 through September 4, 2012, 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
83
Wind Reports
138
Tornado Reports
2
Max Hail Size
2.50″
Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · September 4, 2012 · 2012–present Updated  Daily · last Sep 4, 2012

NWS Hail Reports on September 4, 2012

83 reports
Free hail report for your home →
1.00″ hail
Sep 4, 2012
10:30 PM CST-6
Hail report for September 4, 2012
Plymouth County · 8,362 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .69 N Kingsley, IA
1.00″ hail
Sep 4, 2012
10:25 PM CST-6
Hail report for September 4, 2012
Clayton County · 7,162 Homes in County
Hail Report Description: Dime to quarter sized hail fell for around 20 minutes and covered the ground southwest of Mederville.
NWS Hail Report Location: 2.18 SSW Mederville, IA
1.50″ hail
Sep 4, 2012
10:05 PM CST-6
Hail report for September 4, 2012
Clayton County · 7,162 Homes in County
Hail Report Description: Up to ping pong ball sized hail fell in Osborne.
NWS Hail Report Location: .56 WSW Osborne, IA
1.00″ hail
Sep 4, 2012
10:00 PM CST-6
Hail report for September 4, 2012
Clayton County · 7,162 Homes in County
Hail Report Description: Quarter sized hail was reported southwest of Elkader.
NWS Hail Report Location: 1.71 SW Osborne, IA
1.00″ hail
Sep 4, 2012
9:42 PM CST-6
Hail report for September 4, 2012
Winneshiek County · 7,390 Homes in County
Hail Report Description: Quarter sized hail was reported southeast of Calmar.
NWS Hail Report Location: 1.73 NW Ossian, IA
1.50″ hail
Sep 4, 2012
9:37 PM CST-6
Hail report for September 4, 2012
Winneshiek County · 7,390 Homes in County
Hail Report Description: Hail the size of walnuts fell in Calmar.
NWS Hail Report Location: .5 E Calmar, IA
1.00″ hail
Sep 4, 2012
9:13 PM CST-6
Hail report for September 4, 2012
Winneshiek County · 7,390 Homes in County
Hail Report Description: Quarter sized hail fell in Calmar.
NWS Hail Report Location: .5 E Calmar, IA
1.00″ hail
Sep 4, 2012
9:12 PM CST-6
Hail report for September 4, 2012
Marion County · 8,044 Homes in County
Hail Report Description: Quarter size hail dented a vehicle on Christopher Road.
NWS Hail Report Location: 5.36 E Columbia, MS
0.75″ hail
Sep 4, 2012
9:03 PM CST-6
Hail report for September 4, 2012
Winnebago County · 87,192 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .86 SW Samuelson Corners, IL
1.00″ hail
Sep 4, 2012
8:48 PM CST-6
Hail report for September 4, 2012
Fayette County · 7,962 Homes in County
Hail Report Description: Quarter sized hail fell in Clermont.
NWS Hail Report Location: 1 E Clermont, IA
1.00″ hail
Sep 4, 2012
7:30 PM CST-6
Hail report for September 4, 2012
McCook County · 2,142 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.13 SSE Spencer, SD
1.00″ hail
Sep 4, 2012
7:25 PM CST-6
Hail report for September 4, 2012
Grant County · 16,686 Homes in County
Hail Report Description: Quarter sized hail was reported west of Lancaster.
NWS Hail Report Location: 2.62 NNE Five Pts, WI
1.25″ hail
Sep 4, 2012
7:15 PM CST-6
Hail report for September 4, 2012
Grant County · 16,686 Homes in County
Hail Report Description: Half dollar sized hail fell southeast of Patch Grove causing damage to a vehicle.
NWS Hail Report Location: 2.36 ESE Patch Grove, WI
1.00″ hail
Sep 4, 2012
7:14 PM CST-6
Hail report for September 4, 2012
Turner County · 3,345 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3.02 E Hooker, SD
0.75″ hail
Sep 4, 2012
7:13 PM CST-6
Hail report for September 4, 2012
Crawford County · 6,618 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .86 SE Prairie Du Chien, WI
Showing 15 of 83
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 September 4, 2012

138 reports
Free hail report + wind check →
74 mph
Sep 4, 2012
11:59 PM CST-6
Wind report for September 4, 2012
Olmsted County · 45,014 Homes in County
Wind Report Description: A mesonet automated weather observing system measured a wind gust of 74 miles per hour in Rochester.
NWS Wind Report Location: 3.14 SSE Rochester, MN
74 mph
Sep 4, 2012
11:57 PM CST-6
Wind report for September 4, 2012
Olmsted County · 45,014 Homes in County
Wind Report Description: Over 175 trees were blown down across Rochester. Numerous homes and cars were damaged when the trees landed on them. Power lines were also blown down or came down with the fallen trees, knocking out the power to 4,800 customers across the city.
NWS Wind Report Location: 3.24 SW Rochester, MN
60 mph
Sep 4, 2012
11:42 PM CST-6
Wind report for September 4, 2012
Webster County · 13,143 Homes in County
Wind Report Description: Several six inch diameter tree limbs were downed in downtown Fort Dodge.
NWS Wind Report Location: .69 N Ft Dodge, IA
59 mph
Sep 4, 2012
11:40 PM CST-6
Wind report for September 4, 2012
Dodge County · 7,082 Homes in County
Wind Report Description: The automated weather observing system at the Dodge Center airport measured a wind gust of 59 miles per hour.
NWS Wind Report Location: .2 WNW Dodge Center Arpt, MN
64 mph
Sep 4, 2012
11:21 PM CST-6
Wind report for September 4, 2012
Mower County · 13,134 Homes in County
Wind Report Description: The KMSQ TV transmitter tower, located at Riverland Community College in Austin, was blown down.
NWS Wind Report Location: 1.21 WSW Mapleview, MN
58 mph
Sep 4, 2012
11:15 PM CST-6
Wind report for September 4, 2012
Steele County · 12,070 Homes in County
Wind Report Description: A private weather station measured a wind gust of 58 mph.
NWS Wind Report Location: .5 E Lemond, MN
60 mph
Sep 4, 2012
11:15 PM CST-6
Wind report for September 4, 2012
Floyd County · 6,083 Homes in County
Wind Report Description: An estimated wind gust of 60 miles per hour was reported in Rockford.
NWS Wind Report Location: 1.08 E Rockford, IA
70 mph
Sep 4, 2012
11:10 PM CST-6
Wind report for September 4, 2012
Freeborn County · 11,225 Homes in County
Wind Report Description: A large tree fell on a house in Albert Lea. In addition, there were reports of widespread tree damage across parts of Freeborn County, along with power outages.
NWS Wind Report Location: .55 SE Armstrong, MN
70 mph
Sep 4, 2012
11:08 PM CST-6
Wind report for September 4, 2012
Cerro Gordo County · 17,096 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: .69 N (Mcw)Mason City Muni, IA
66 mph
Sep 4, 2012
11:05 PM CST-6
Wind report for September 4, 2012
Cerro Gordo County · 17,096 Homes in County
Wind Report Description: Several 6 inch diameter limbs were down.
NWS Wind Report Location: 1.01 E Mason City, IA
66 mph
Sep 4, 2012
11:04 PM CST-6
Wind report for September 4, 2012
Cerro Gordo County · 17,096 Homes in County
Wind Report Description: Large trees toppled power lines along State Street in downtown Mason City.
NWS Wind Report Location: .12 N Mason City, IA
59 mph
Sep 4, 2012
11:01 PM CST-6
Wind report for September 4, 2012
Cerro Gordo County · 17,096 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: .69 N (Mcw)Mason City Muni, IA
60 mph
Sep 4, 2012
10:50 PM CST-6
Wind report for September 4, 2012
Faribault County · 6,030 Homes in County
Wind Report Description: A few trees were blown down in Wells, Minnesota. Power outages also occurred.
NWS Wind Report Location: .69 S Wells, MN
58 mph
Sep 4, 2012
10:48 PM CST-6
Wind report for September 4, 2012
Hancock County · 4,445 Homes in County
Wind Report Description: Several branches downed.
NWS Wind Report Location: 2 E Miller, IA
59 mph
Sep 4, 2012
10:45 PM CST-6
Wind report for September 4, 2012
Hancock County · 4,445 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 3.6 NNW Miller, IA
Showing 15 of 138
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 September 4, 2012

2 reports
EF2 category
Sep 4, 2012
6:37 PM CST-6
Tornado report for September 4, 2012
Grant County · 16,686 Homes in County
Tornado Report Description: A slow moving tornado formed on the edge of a passing severe thunderstorm between Patch Grove and Bloomington. The tornado was mainly confined to one landowner near Hickory and Maine Roads in rural Grant County. Several outbuildings, a barn, and the home were demolished or heavily damaged. Trees on the property were also sheared off or blown over. Considering the roof was torn off and several walls were down or damaged, the tornado was rated an EF2 but it's possible the slow movement allowed the tornado to remain nearly stationary long enough to cause worse damage. Interviews by local residents and video evidence suggests the tornado may have moved to the northwest at times as well.
NWS Tornado Report Location: 1.93 SW Patch Grove, WI
EF0 category
Sep 4, 2012
5:31 PM EST-5
Tornado report for September 4, 2012
Camden County · 116,355 Homes in County
Tornado Report Description: A weak EFO tornado touched down in Mount Ephraim at 631 p.m. EDT on the 4th. The tornado initially touched down on the west side of Cleveland Avenue. It then moved eastnortheast, crossed Jefferson Avenue and lifted as it approached Kings Highway. (County Route 551). Several homes in the area experienced roof damage, mainly from fallen tree limbs. A couple of large trees were uprooted. One badly damaged a concrete sidewalk. The maximum wind speeds were estimated at 70 mph. The path length was about 0.15 miles and the maximum path width was 25 yards.
NWS Tornado Report Location: .23 SE Gloucester Hgts, NJ
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 September 4, 2012 on the Interactive Map

Report type
Hail
Wind
Tornado

Get a Remote Hail Inspection

Not sure if hail may have affected your home on September 4, 2012? 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 September 4, 2012?

Our records show 83 hail, 138 wind, and 2 tornado reports on September 4, 2012, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on September 4, 2012.

What was the largest hail reported on September 4, 2012?

The largest hail size in these storm-report records on September 4, 2012 is 2.50″, reported near .85 SE Spring Grove, MN.

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 September 4, 2012 — 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 September 4, 2012 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 September 4, 2012?

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 September 4, 2012 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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