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NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on September 10, 2011

Public hail, wind, and tornado reports across the United States on September 10, 2011 from September 10, 2011 through September 10, 2011, 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
8
Wind Reports
12
Tornado Reports
0
Max Hail Size
1.25″
Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · September 10, 2011 · 2011–present Updated  Daily · last Sep 10, 2011

NWS Hail Reports on September 10, 2011

8 reports
Free hail report for your home →
1.00″ hail
Sep 10, 2011
6:00 PM PST-8
Hail report for September 10, 2011
San Bernardino County · 516,095 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .76 E Baker, CA
1.00″ hail
Sep 10, 2011
6:11 PM MST-7
Hail report for September 10, 2011
Pima County · 284,034 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .9 NW Tucson, AZ
1.00″ hail
Sep 10, 2011
5:55 PM MST-7
Hail report for September 10, 2011
Maricopa County · 1,189,056 Homes in County
Hail Report Description: Strong thunderstorms moved across the eastern greater Phoenix area during the evening hours on September 10th, and some of them produced large hail. A National Weather Service employee in east Mesa reported hail estimated to be one inch in diameter. No damage was reported in association with the large hail.
NWS Hail Report Location: 1.86 ESE Twin Knolls, AZ
1.25″ hail
Sep 10, 2011
3:30 PM PST-8
Hail report for September 10, 2011
Los Angeles County · 1,726,365 Homes in County
Hail Report Description: A severe thunderstorm produced very large hail across the Antelope Valley. A trained weather spotter in the Palmdale area reported hail with a diameter of 1.25 inches.
NWS Hail Report Location: 1.53 S Desert View Highland, CA
1.00″ hail
Sep 10, 2011
3:30 PM MST-7
Hail report for September 10, 2011
Pinal County · 136,257 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1.35 WSW Oracle, AZ
1.00″ hail
Sep 10, 2011
1:38 PM MST-7
Hail report for September 10, 2011
Yavapai County · 83,199 Homes in County
Hail Report Description: One inch diameter hail was reported by a trained spotter in Chino Valley.
NWS Hail Report Location: 2.07 N Chino Vly, AZ
1.00″ hail
Sep 10, 2011
5:30 AM PST-8
Hail report for September 10, 2011
Orange County · 563,953 Homes in County
Hail Report Description: Two reports of quarter-sized hail in Dana Point around 0600 PST. Quarter-sized hail was also reported in Costa Mesa and two others of one-inch hail in Anaheim between about 0900 and 0930 PST on the 10th.
NWS Hail Report Location: .2 N Dana Pt, CA
0.75″ hail
Sep 10, 2011
3:25 AM PST-8
Hail report for September 10, 2011
San Bernardino County · 516,095 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: N Landers, CA
Showing 8 of 8
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 10, 2011

12 reports
Free hail report + wind check →
58 mph
Sep 10, 2011
8:00 PM MST-7
Wind report for September 10, 2011
Maricopa County · 1,189,056 Homes in County
Wind Report Description: Scattered thunderstorms with strong damaging wind moved across the eastern greater Phoenix area during the evening hours on September 10th. At 830 pm a trained weather spotter in Chandler reported that several tree branches as large as 9 inches in diameter were broken off by strong wind. At approximately 8 pm, local media reported a number of trees down in northeast Gilbert, between Elliot and Baseline roads on Val Vista.
NWS Wind Report Location: .69 S Sun Lakes, AZ
60 mph
Sep 10, 2011
7:50 PM MST-7
Wind report for September 10, 2011
Maricopa County · 1,189,056 Homes in County
Wind Report Description: Thunderstorms with strong gusty winds moved across eastern portions of the greater Phoenix area during the evening hours on September 10th. A trained weather spotter, located about 5 miles northeast of Paradise Valley, estimated a peak wind gust to 60 mph. No damage was reported with this wind gust.
NWS Wind Report Location: .9 SE Scottsdale Muni, AZ
58 mph
Sep 10, 2011
7:30 PM MST-7
Wind report for September 10, 2011
Maricopa County · 1,189,056 Homes in County
Wind Report Description: Strong thunderstorms with damaging winds moved across the northeastern portions of the greater Phoenix area during the evening hours on September 10th. A trained weather spotter reported that numerous large tree branches were blown down near the intersection of Scottsdale road and Westland Road, a few miles south of Carefree. Winds were estimated to be in excess of 50 knots.
NWS Wind Report Location: 2.99 SSE Cave Creek, AZ
63 mph
Sep 10, 2011
6:30 PM MST-7
Wind report for September 10, 2011
Pinal County · 136,257 Homes in County
Wind Report Description: Thunderstorms with damaging microburst winds moved across the Florence area during the evening hours on September 10th. A trained weather spotter in northeast Florence reported roof damage to several carports. Winds were estimated to be in excess of 50 knots.
NWS Wind Report Location: .9 NE Florence, AZ
60 mph
Sep 10, 2011
6:11 PM MST-7
Wind report for September 10, 2011
Pima County · 284,034 Homes in County
Wind Report Description: Thunderstorm winds downed several trees in the Catalina Foothills. A large mesquite tree blocked the road at Rudasil and Tiburon Roads.
NWS Wind Report Location: 2.64 SE Sabino, AZ
70 mph
Sep 10, 2011
6:02 PM MST-7
Wind report for September 10, 2011
Maricopa County · 1,189,056 Homes in County
Wind Report Description: Strong thunderstorms with damaging microburst winds affected part of the eastern Phoenix metropolitan area during the evening hours on September 10th. A trained weather spotter, near Brown and Ellsworth roads in east Mesa, reported that trees were downed due to winds estimated at 70 mph.
NWS Wind Report Location: 2.37 NNE Twin Knolls, AZ
69 mph
Sep 10, 2011
6:00 PM MST-7
Wind report for September 10, 2011
Maricopa County · 1,189,056 Homes in County
Wind Report Description: Scattered thunderstorms with strong damaging winds moved across eastern portions of the greater Phoenix area during the evening hours on September 10th. According to reports from local broadcast media, 7 power poles were downed in the city of Mesa at the intersection of University Drive and 70th Street. Winds were estimated to be near 60 knots.
NWS Wind Report Location: 1.34 ESE Golden Hills, AZ
70 mph
Sep 10, 2011
5:55 PM MST-7
Wind report for September 10, 2011
Maricopa County · 1,189,056 Homes in County
Wind Report Description: Strong thunderstorms developed across the eastern portion of the greater Phoenix area during the evening hours on September 10th. At approximately 6 pm, a National Weather Service employee in east Mesa estimated a thunderstorm wind gust to 70 mph. No damage was reported with this gust.
NWS Wind Report Location: 1.86 ESE Twin Knolls, AZ
69 mph
Sep 10, 2011
5:50 PM MST-7
Wind report for September 10, 2011
Maricopa County · 1,189,056 Homes in County
Wind Report Description: Scattered thunderstorms with strong and damaging winds moved across the eastern portions of the greater Phoenix area during the evening hours on September 10th. According to a National Weather Service storm survey in Mesa, winds estimated to be at least 60 knots downed multiple trees with diameters up to 14 inches. In addition, the winds caused shingle damage to area homes.
NWS Wind Report Location: 1.15 W Buckhorn, AZ
66 mph
Sep 10, 2011
5:32 PM MST-7
Wind report for September 10, 2011
Pima County · 284,034 Homes in County
Wind Report Description: Strong thunderstorm winds occurred on Tucson's south side for the second day in a row, downing numerous power poles, electric lines, street signs, and trees. As many as 25,000 were left without power. One power pole was downed on a trailer leading to the evacuation of the trailer park near East Drexel and South Country Club Roads. Another Tucson resident woke up to a power pole entering the dwelling. Part of a roof was also blown off a residence on Valencia Road, blowing across the road into another home damaging the roof.
NWS Wind Report Location: 1.96 S (Tus)Tucson Intl Arp, AZ
69 mph
Sep 10, 2011
5:30 PM MST-7
Wind report for September 10, 2011
Valley County · 10,443 Homes in County
Wind Report Description: A trained spotter and other sources reported at least three, two feet in diameter trees were blown down at the north end of Payette Lake.
NWS Wind Report Location: 6 NNW Mc Call, ID
63 mph
Sep 10, 2011
3:40 PM MST-7
Wind report for September 10, 2011
Tooele County · 19,429 Homes in County
Wind Report Description: The Lake Point I-80 sensor recorded a maximum wind gust of 63 mph.
NWS Wind Report Location: 1.48 NNE Lake Pt, UT
Showing 12 of 12
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 10, 2011

0 reports

No tornado reports were found for this selection.

Showing 0 of 0
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 10, 2011 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 10, 2011? 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 10, 2011?

Our records show 8 hail, 12 wind, and 0 tornado reports on September 10, 2011, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on September 10, 2011.

What was the largest hail reported on September 10, 2011?

The largest hail size in these storm-report records on September 10, 2011 is 1.25″, reported near Desert View Highland, CA.

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 10, 2011 — 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 10, 2011 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 10, 2011?

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 10, 2011 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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