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

Hail, Wind & Tornado Reports in and near Alton, NH

Public hail, wind, and tornado reports in and near Alton, NH from June 5, 1960 through July 16, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 03809 — search hail, wind and tornado public reports for any U.S. ZIP code 
Hail Reports
18
Wind Reports
28
Tornado Reports
3
Max Hail Size
1.75″
Source  NOAA SPC · NWS Local Storm Reports Coverage  Alton, NH · 1960–present Updated  Daily · last Jul 16, 2026

Latest NWS Hail Reports in and near Alton, NH

18 reports
Free hail report for your home →
1.00″ hail
Sep 8, 2023
8:25 PM UTC
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3 NW Alton, NH
1.25″ hail
Aug 26, 2022
7:32 PM UTC
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: OBSERVED 1.25 INCH HAIL IN BARNSTEAD. TIME ESTIMATED BY RADAR.
NWS Hail Report Location: 2 ENE Barnstead, NH
1.00″ hail
Jun 17, 2022
4:40 PM UTC
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: NORTH OF ALTON ON NH HIGHWAY 28. FELL FOR 4-5 MINUTES.
NWS Hail Report Location: 1 NNW Alton, NH
1.25″ hail
Jul 8, 2020
8:32 PM UTC
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: HAIL FOR 8 MINS.
NWS Hail Report Location: 2 W Strafford, NH
1.00″ hail
Jul 19, 2015
6:45 PM EST-5
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: A severe thunderstorm produced 1 inch hail in Barnstead.
NWS Hail Report Location: .5 E Barnstead, NH
1.00″ hail
Jul 19, 2015
3:55 PM EST-5
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: A severe thunderstorm produced 1 inch hail in Alton.
NWS Hail Report Location: N Alton, NH
0.88″ hail
Jul 19, 2015
2:15 PM EST-5
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: A thunderstorm produced 0.88 inch hail near Camp Deer Run in Alton Bay.
NWS Hail Report Location: 3.49 N Alton Bay, NH
1.00″ hail
Jul 26, 2011
4:30 PM EST-5
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: A severe thunderstorm produced 1 inch hail in Alton.
NWS Hail Report Location: N Alton, NH
0.88″ hail
Jul 21, 2010
8:20 PM EST-5
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: A thunderstorm produced .88 hail in Barnstead.
NWS Hail Report Location: .5 E Barnstead, NH
0.88″ hail
Jun 26, 2009
1:30 PM EST-5
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: A severe thunderstorm produced .88 inch hail in Alton.
NWS Hail Report Location: 1.71 SW Alton, NH
0.75″ hail
Jun 5, 2007
1:13 PM EST-5
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: A severe thunderstorm produced .75 inch hail in Alton.
NWS Hail Report Location: N Alton, NH
0.75″ hail
Jun 5, 2007
12:59 PM EST-5
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: A severe thunderstorm produced .75 inch hail in Alton.
NWS Hail Report Location: N Alton, NH
0.75″ hail
Sep 9, 2006
4:20 PM EST
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: 3/4 inch hail.
NWS Hail Report Location: Alton, NH
0.75″ hail
Jun 20, 2006
6:45 PM EST
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: Large hail
NWS Hail Report Location: Alton Bay, NH
1.75″ hail
Jun 20, 2006
6:28 PM EST
Hail report for Alton, NH
Belknap County · 28,355 Homes in County
Hail Report Description: Large hail
NWS Hail Report Location: Alton, NH
Showing 15 of 18
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 Alton, NH

28 reports
Free hail report + wind check →
UNK mph
Jul 16, 2026
7:30 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: Tree down on wires... highway by Horn Road.
NWS Wind Report Location: 1 NNW Alton, NH
UNK mph
Jun 18, 2026
8:25 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: Tree down blocking NH-28 in the area of Emerson Drive in Alton. Time estimated by radar.
NWS Wind Report Location: 1 SSE Alton, NH
UNK mph
Jun 24, 2025
10:20 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: Trees down on Stage Rd and Fatima Rd near Camp Fatima. Time estimated by radar.
NWS Wind Report Location: 5 N Barnstead, NH
UNK mph
Jun 24, 2025
10:17 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: Tree down in the road.
NWS Wind Report Location: 4 E Gilmanton, NH
UNK mph
Jun 24, 2025
10:09 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: Tree down.
NWS Wind Report Location: 4 NNW Alton, NH
UNK mph
Aug 5, 2024
11:26 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: Tree down near Youngtown Rd and Frank C Gilman Hwy.
NWS Wind Report Location: 1 WSW Alton, NH
UNK mph
Aug 5, 2024
11:23 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: Trees and wires down near Halls Hill Rd and Horne Rd.
NWS Wind Report Location: 2 SW Alton, NH
UNK mph
Aug 6, 2022
9:20 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: THUNDERSTORM WINDS KNOCKED DOWN SEVERAL BRANCHES NEAR SUNCOOK RIVER AND RTE 126. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 1 ENE Barnstead, NH
UNK mph
Jun 30, 2021
8:53 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: DEPUTY CHIEF OF BARNSTEAD FIRE REPORTS MULTIPLE INSTANCES OF STRUCTURAL DAMAGE AS A RESULT OF DOWN TREES. IN ADDITION... MULTIPLE HOUSES WERE STRUCK BY LIGHTNING AND A WATER RESCUE WAS PERFORMED ON A NEARBY LAKE. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 4 NNE Barnstead, NH
UNK mph
Jun 6, 2020
6:36 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: WIRES DOWN... WIND DAMAGE.
NWS Wind Report Location: 4 NNW Strafford, NH
UNK mph
Jun 19, 2017
8:35 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: POWER LINES DOWN.
NWS Wind Report Location: Alton, NH
UNK mph
Sep 11, 2016
1:45 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: LARGE BRANCHES DOWN
NWS Wind Report Location: Alton, NH
UNK mph
Jul 23, 2016
9:15 PM UTC
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: TREES AND WIRES DOWN ON BEAUTY HILL ROAD
NWS Wind Report Location: Barnstead, NH
58 mph
Sep 6, 2014
2:30 PM EST-5
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: An isolated severe thunderstorm downed a tree on a cottage in Alton.
NWS Wind Report Location: N Alton, NH
58 mph
Aug 5, 2014
7:25 PM EST-5
Wind report for Alton, NH
Belknap County · 28,355 Homes in County
Wind Report Description: A severe thunderstorm downed trees and wires in Center Barnstead.
NWS Wind Report Location: 1.01 E Center Barnstead, NH
Showing 15 of 28
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 Alton, NH

3 reports
UNK category
Aug 22, 2020
4:45 PM UTC
Tornado report for Alton, NH
Belknap County · 28,355 Homes in County
Tornado Report Description: CORRECTS PREVIOUS WATER SPOUT REPORT FROM 3 SW WOLFEBORO. TIME ESTIMATED VIA RADAR ... VIDEO SENT VIA FACEBOOK.
NWS Tornado Report Location: 3 SW Wolfeboro, NH
EF2 category
Jul 24, 2008
10:46 AM EST-5
Tornado report for Alton, NH
Belknap County · 28,355 Homes in County
Tornado Report Description: An E-F2 tornado moving north northeast out of Rockingham County entered Belknap County about 2 miles southwest of South Barnstead near Province Road. The storm travaled almost 12 miles before crossing into Strafford County resulting in E-F0 to E-F2 damage. There were numerous houses and buildings that were damaged or destroyed by the tornado or by falling trees. In addition, there were thousands of downed trees and numerous power lines down along the path of the storm.
NWS Tornado Report Location: 1.99 SSW South Barnstead, NH
F2 category
Jul 6, 1999
3:28 PM EST
Tornado report for Alton, NH
Belknap County · 28,355 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Barnstead, NH
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 in and near Alton, NH on the Interactive Map

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Browse ZIP Codes with NWS Storm Reports in Alton

03809 27
Alton, NH Hail, wind & tornado reports
03810 4
Alton, NH Hail, wind & tornado reports

NWS Storm Reports & Census Data

U.S. Census Data · City

Alton, NH area census snapshot

People & households
Population416
Households179
Housing units179
Income
Median household income--
$100k+ households44.1%
$150k+ households37.4%
Housing stock
Single-family detached102
Attached single-family0
Small multifamily68
Large multifamily9
Mobile homes0
Housing mix
Single-family share57.0%
Attached-home share--
Multifamily share43.0%
Mobile-home share--
Ownership & occupancy
Owner-occupied102
Renter-occupied77
Vacant units0
Home value & age
Median home value$358,200
Owner homes $300k+88.2%
Owner homes $500k+22.6%
Owner homes $750k+--
Median year built1972
Older-home share90.5%
Vehicle context
Households with cars179
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 Alton have on record?

Our records show 18 hail, 28 wind, and 3 tornado reports in and near Alton, NH, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on July 16, 2026.

What is the largest hail ever reported in Alton?

The largest hail size in these storm-report records in and near Alton, NH is 1.75″. It was reported near Alton, NH on June 20, 2006.

A storm report showed up near my home in Alton — 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 Alton and ask about a Remote Hail Inspection before anyone climbs on the roof.

I am buying a home in Alton — 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 Alton address before closing helps you ask informed questions about roof age, past repairs, and any prior claims.

I am selling a home in Alton — 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 Alton address?

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