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NOAA/NWS STORM PREDICTION CENTER REPORTS + U.S. CENSUS DATA

Hail, Wind & Tornado Reports in and near Alto, WI

Public hail, wind, and tornado reports in and near Alto, WI from June 17, 1962 through August 28, 2018, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Hail Reports
7
Wind Reports
14
Tornado Reports
8
Max Hail Size
2.00″
Source  NOAA SPC · NWS Local Storm Reports Coverage  Alto, WI · 1962–present Updated  Daily · last Aug 28, 2018

Latest NWS Hail Reports in and near Alto, WI

7 reports
Free hail report for your home →
1.00″ hail
Jun 15, 2016
11:40 PM UTC
Hail report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Hail Report Description: RELAYED VIA SOCIAL MEDIA.
NWS Hail Report Location: Alto, WI
2.00″ hail
Aug 2, 2015
4:35 PM CST-6
Hail report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.11 ENE Alto, WI
0.75″ hail
May 17, 2006
2:31 PM CST
Hail report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 5 WNW Waupun, WI
0.75″ hail
Mar 11, 2006
8:40 PM CST
Hail report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Alto, WI
0.75″ hail
Jun 23, 2004
7:42 PM CST
Hail report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2 SW Alto, WI
1.75″ hail
Jun 23, 2004
7:40 PM CST
Hail report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 4 SW Alto, WI
1.00″ hail
Mar 8, 2000
5:30 PM CST
Hail report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3 NE Waupun, WI
Showing 7 of 7
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.

Latest NWS Wind Reports in and near Alto, WI

14 reports
Free hail report + wind check →
65 mph
Jun 12, 2017
11:50 PM UTC
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: HALF OF ROOF SHINGLES BLOWN OFF.
NWS Wind Report Location: 1 NNW Waupun, WI
UNK mph
Jun 12, 2017
11:45 PM UTC
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: A 12 INCH DIAMETER TREE WAS SNAPPED OFF IN THE 400 BLOCK OF JACKSON ST.
NWS Wind Report Location: 1 NE Waupun, WI
UNK mph
May 29, 2016
12:45 AM UTC
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: WIRES DOWN IN WAUPUN.
NWS Wind Report Location: Waupun, WI
60 mph
Jul 19, 2011
11:10 PM CST-6
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: Large tree branches were reported blown down from thunderstorm wind gusts estimated at 61 mph (52 knots) at the intersection of County A and County AW just west of Waupun.
NWS Wind Report Location: 2.13 W Waupun, WI
60 mph
Oct 2, 2006
4:10 PM CST-6
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: Powerful thunderstorm winds knocked down large trees.
NWS Wind Report Location: 2 E Alto, WI
60 mph
Sep 13, 2005
4:25 PM CST
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 1 NE Waupun, WI
60 mph
Apr 18, 2002
8:37 PM CST
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Waupun, WI
60 mph
Aug 22, 2001
2:55 AM CST
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Waupun, WI
60 mph
Jun 16, 2001
6:45 PM CST
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Alto, WI
UNK mph
Jul 16, 1997
6:00 PM CST
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 2 NW Waupun, WI
UNK mph
May 8, 1988
5:20 PM CST
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, WI
UNK mph
Jul 21, 1983
5:30 PM CST
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, WI
UNK mph
Jul 21, 1983
4:55 PM CST
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, WI
UNK mph
Jun 17, 1962
6:00 PM CST
Wind report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, WI
Showing 14 of 14
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.

Latest NWS Tornado Reports in and near Alto, WI

8 reports
UNK category
Aug 28, 2018
8:58 PM UTC
Tornado report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Tornado Report Description: A NWS STORM SURVEY FOUND EF-1 RATED TORNADO DAMAGE BEGINNING NEAR THE TOWN OF ALTO. THE TORNADO HAD AN ESTIMATED PEAK WIND OF 100 MPH... WITH A PATH LENGTH OF 2.02 MILES.
NWS Tornado Report Location: Alto, WI
UNK category
Aug 28, 2018
8:58 PM UTC
Tornado report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Tornado Report Description: PATH MAY BE EXTENDED FURTHER WEST.
NWS Tornado Report Location: 1 ESE Alto, WI
UNK category
Aug 28, 2018
8:58 PM UTC
Tornado report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Tornado Report Description: CORRECTS PREVIOUS TORNADO REPORT FROM 4 NNW WAUPUN. PRELIMINARY EF1 RATING. SURVEY STILL ONGOING. START AND END POINTS TBD.
NWS Tornado Report Location: 4 NNW Waupun, WI
UNK category
Aug 28, 2018
7:58 PM UTC
Tornado report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Tornado Report Description: PRELIMINARY EF1 RATING. SURVEY STILL ONGOING. START AND END POINTS TBD.
NWS Tornado Report Location: 4 NNW Waupun, WI
EF1 category
Jun 21, 2011
2:21 PM CST-6
Tornado report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Tornado Report Description: This EF1 tornado touched down about 4.4 miles west-southwest of the town of Alto in Fond Du Lac County, on Marshview Road, about one-third of a mile north of Lake Maria Road, and tracked about 2.6 miles to the north-northwest before crossing into Green Lake County, about 3.7 miles south-southwest of Fairwater, at County Road S approximately 1/4 mile east of Schure Road. This tornado exhibited three separate damage tracks within the path, suggesting three separate vortices formed and dissipated during the life span of the tornado. The average path width was 75 yards, with a maximum path width of 105 yards. The tornado blew over trees and flattened a pole shed. The EF1 rating was determined by using DI 21(MBS) DOD5 LB to EXP with estimated winds speeds of 105 mph. The exact starting point was 43.77112/-88.88480 and the exact ending point was 43.78370/-88.88558.
NWS Tornado Report Location: 4.37 WSW Alto, WI
F0 category
Jul 3, 2006
12:28 PM CST
Tornado report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Tornado Report Description: A very brief tornado spun up 0.7 miles west of Alto and tracked a tenth of a mile before dissipating. No damage was reported from this F0 tornado. This tornado was most likely of the landspout variety and the result of vertical stretching of a low-level circulation into the updraft of a towering cumulus cloud that formed on a weak atmospheric boundary that was moving south through Fond du Lac County. No precipitation was observed on the WSR-88D Doppler radar, and only very weak rotation was noted on only one volume scan with a +6 kt/-6 kt speed differential in the 0.5 degree scan.
NWS Tornado Report Location: 1 W Alto, WI
F3 category
Jun 23, 2004
7:42 PM CST
Tornado report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Tornado Report Description: This tornado was a continuation of the tornado that moved east from the Lake Maria area of extreme southeastern Green Lake County. It maintained its F3 strength (175-200 mph) and moved east along Marshview Rd, only to merge with the F3 tornado moving east/southeast out of the Markesan area of southeast Green Lake County. The merger took place just east of a dogleg/bend of Oak Grove Rd., about 2.2 miles SSW of Alto. The civil Town of Alto reported that 8 residential homes had major damage. Four farms were affected with a tally of 8 ag-buildings/homes with minor damage, 19 with major damage, and 16 destroyed. Crop damage was severe. Public sector damage (roads/bridges) was about $100K. Average path width was about 275 yards.
NWS Tornado Report Location: 5 SW Alto, WI
F3 category
Jun 23, 2004
7:42 PM CST
Tornado report for Alto, WI
Fond du Lac County · 32,214 Homes in County
Tornado Report Description: This tornado was a continuation of the tornado that moved through the southern part of the city of Markesan (Green Lake Co.). It entered Fond du Lac County just south of Lake Maria Road, about 4.7 miles SW of Alto. It moved east-southeast on a line toward Waupun at F3 strength (estimated 175-200 mph), and actually merged with the Lake Maria tornado that moved east out of extreme southeastern Green Lake County. The merger took place just east of a dogleg/bend of Oak Grove Rd., about 2.2 miles SSW of Alto. The civil Town of Alto reported that 19 residential homes had major damage and 1 was destroyed. One business had major damage. Fourteen farms were affected with a tally of 8 ag-buildings/homes with minor damage, 19 with major damage, and 16 destroyed. Crop damage was severe. Public sector damage (roads/bridges) was about $225K. In the city of Waupun (Fond du Lac side), 4 homes had major damage, and roughly 150 had minor roof/siding damage due to severe tree damage. Average path width was about 300 yards.
NWS Tornado Report Location: 5 SW Alto, WI
Showing 8 of 8
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 in and near Alto, WI on the Interactive Map

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Browse ZIP Codes with NWS Storm Reports in Alto

53919 47
Brandon, WI Hail, wind & tornado reports
53963 59
Waupun, WI Hail, wind & tornado reports

NWS Storm Reports & Census Data

U.S. Census Data · City

Alto, WI area census snapshot

People & households
Population119
Households49
Housing units52
Income
Median household income$83,125
$100k+ households51.0%
$150k+ households14.3%
Housing stock
Single-family detached52
Attached single-family0
Small multifamily0
Large multifamily0
Mobile homes0
Housing mix
Single-family share100%
Attached-home share--
Multifamily share--
Mobile-home share--
Ownership & occupancy
Owner-occupied48
Renter-occupied1
Vacant units3
Home value & age
Median home value$158,300
Owner homes $300k+--
Owner homes $500k+--
Owner homes $750k+--
Median year built1938
Older-home share96.2%
Vehicle context
Households with cars43
Free hail maps

This snapshot is for local area context only and describes the selected state, county, city, or ZIP area — not a specific home or property. For ZIP-level estimated hail impact, use Free Hail Maps to generate a hail report with key impact details for that ZIP.

Frequently asked questions

for homeowners, buyers & sellers
How many hail, wind, and tornado reports does Alto have on record?

Our records show 7 hail, 14 wind, and 8 tornado reports in and near Alto, WI, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on August 28, 2018.

What is the largest hail ever reported in Alto?

The largest hail size in these storm-report records in and near Alto, WI is 2.00″. It was reported near Alto, WI on August 2, 2015.

A storm report showed up near my home in Alto — does that mean my roof is damaged?

Not necessarily. A storm report only means hail, wind, or a tornado was observed nearby; it does not confirm damage at any specific address, and conditions change from block to block. Check an address-level hail report first, and if it looks significant, find a local pro that serves Alto and ask about a Remote Hail Inspection before anyone climbs on the roof.

I am buying a home in Alto — why should I look at its storm history?

Recent hail or wind can leave a roof or exterior with damage that is easy to miss during a walkthrough, and a recent roof replacement is sometimes an insurance job after a storm. Reviewing the storm history for a Alto address before closing helps you ask informed questions about roof age, past repairs, and any prior claims.

I am selling a home in Alto — how does this help me?

Knowing the storm history for your address lets you answer buyer questions with confidence, document repairs you have already made, and decide whether a pre-listing roof check is worthwhile. A clear hail history removes a common sticking point during negotiations.

How do I check hail history for a specific Alto address?

Use the address search to pull a free address-level hail report for any property in Alto — 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 across Alto, WI, sourced from NOAA SPC and NWS Local Storm Reports. They show where hail, wind, or tornado activity was reported in Alto, 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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