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

Hail, Wind & Tornado Reports in and near Mazon, IL

Public hail, wind, and tornado reports in and near Mazon, IL from April 16, 1960 through August 11, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 60444 — search hail, wind and tornado public reports for any U.S. ZIP code 
Hail Reports
12
Wind Reports
27
Tornado Reports
4
Max Hail Size
1.75″
Source  NOAA SPC · NWS Local Storm Reports Coverage  Mazon, IL · 1960–present Updated  Daily · last Aug 11, 2026

Latest NWS Hail Reports in and near Mazon, IL

12 reports
Free hail report for your home →
1.00″ hail
Apr 30, 2022
9:03 PM UTC
Hail report for Mazon, IL
Grundy County · 15,147 Homes in County
Hail Report Description: SHARED VIA SOCIAL MEDIA. TIME ESTIMATED FROM RADAR.
NWS Hail Report Location: Mazon, IL
1.00″ hail
Mar 14, 2019
4:40 PM UTC
Hail report for Mazon, IL
Grundy County · 15,147 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2 N Mazon, IL
1.00″ hail
Jun 12, 2013
7:04 PM CST-6
Hail report for Mazon, IL
Grundy County · 15,147 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: N Mazon, IL
1.00″ hail
May 30, 2008
5:42 PM CST-6
Hail report for Mazon, IL
Grundy County · 15,147 Homes in County
Hail Report Description: Penny to quarter size hail was reported in Mazon.
NWS Hail Report Location: .86 NE Mazon, IL
0.88″ hail
Mar 12, 2006
5:05 PM CST
Hail report for Mazon, IL
Grundy County · 15,147 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 N Mazon, IL
1.00″ hail
Jul 6, 2003
1:53 PM CST
Hail report for Mazon, IL
Grundy County · 15,147 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Mazon, IL
0.88″ hail
Mar 19, 2003
5:44 PM CST
Hail report for Mazon, IL
Grundy County · 15,147 Homes in County
Hail Report Description: Reported at Gardener Road and Route 47.
NWS Hail Report Location: 4 S Mazon, IL
1.75″ hail
Apr 10, 1999
3:26 PM CST
Hail report for Mazon, IL
Grundy County · 15,147 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: E Mazon, IL
0.75″ hail
Jul 7, 1991
4:55 PM CST
Hail report for Mazon, IL
Grundy County · 15,147 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, IL
0.75″ hail
May 14, 1991
7:20 AM CST
Hail report for Mazon, IL
Grundy County · 15,147 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, IL
1.00″ hail
Jun 21, 1990
3:30 PM CST
Hail report for Mazon, IL
Grundy County · 15,147 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, IL
1.75″ hail
Jun 1, 1980
8:10 PM CST
Hail report for Mazon, IL
Grundy County · 15,147 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, IL
Showing 12 of 12
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 Mazon, IL

27 reports
Free hail report + wind check →
65 mph
Aug 11, 2026
4:17 PM UTC
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: Private weather station: 2.4 NNW Mazon.
NWS Wind Report Location: 2 Nnw Mazon, IL
65 mph
Aug 11, 2026
3:37 PM UTC
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: Private weather station.
NWS Wind Report Location: 2 Nnw Mazon, IL
59 mph
May 5, 2026
12:32 AM UTC
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: Measured on a Davis personal weather station.
NWS Wind Report Location: 2 N Mazon, IL
62 mph
Jul 29, 2023
3:55 AM UTC
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: Peak gust measured by mesonet station DVI02735 3 WNW Mazon.
NWS Wind Report Location: 3 WNW Mazon, IL
59 mph
Apr 20, 2023
11:15 PM UTC
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: MEASURED AT PWS KILVERNON6.
NWS Wind Report Location: 3 WNW Mazon, IL
59 mph
Apr 20, 2023
11:10 PM UTC
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: CORRECTS TIME OF PREVIOUS TSTM WND GST REPORT FROM 2 NNW MAZON. PRIVATE WEATHER STATION KILMAZON10 RECORDED 59MPH GUST.
NWS Wind Report Location: 2 NNW Mazon, IL
59 mph
Apr 20, 2023
11:05 PM UTC
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: PRIVATE WEATHER STATION KILMAZON10 RECORDED 59MPH GUST.
NWS Wind Report Location: 2 NNW Mazon, IL
UNK mph
Jun 28, 2020
1:59 AM UTC
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: REPORTS OF 10 TO 12 UTILITY POLES SNAPPED FROM EARLIER STORMS BETWEEN PRAIRIE AND GRINTER ROADS ALONG ROUTE 47. TIME ESTIMATED BY CALL TIME AND RADAR.
NWS Wind Report Location: 3 S Mazon, IL
75 mph
Jun 24, 2013
4:32 PM CST-6
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: A large tree was snapped at the base.
NWS Wind Report Location: .86 NE Mazon, IL
60 mph
May 30, 2013
2:27 PM CST-6
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: Sustained winds were estimated to 40 mph with gusts estimated between 50 and 60 mph.
NWS Wind Report Location: N Mazon, IL
58 mph
May 11, 2011
5:40 PM CST-6
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: A tree fell blocking the road at Route 47 and Gardner Road.
NWS Wind Report Location: 3.32 SSE Mazon, IL
68 mph
Jul 21, 2008
7:02 AM CST-6
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: A wind gust to 68 mph was measured near Dupont Road and Route 47.
NWS Wind Report Location: 1.67 SSE Paytonville, IL
60 mph
May 30, 2008
5:45 PM CST-6
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: Six to eight inch diameter tree limbs were blown down on Center Street. Large tree limbs and some large trees were also blown down.
NWS Wind Report Location: .82 NNE Mazon, IL
60 mph
May 15, 2007
12:25 PM CST-6
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: A gust to 60 mph was measured at the Dwight Airport in southern Grundy County.
NWS Wind Report Location: 7 SSW Mazon, IL
63 mph
Jun 21, 2006
4:27 PM CST
Wind report for Mazon, IL
Grundy County · 15,147 Homes in County
Wind Report Description: Two trees, each one foot in diameter, were blown down at Dwight and Gardner Roads.
NWS Wind Report Location: 3 S Mazon, IL
Showing 15 of 27
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 Mazon, IL

4 reports
UNK category
Aug 11, 2026
3:20 PM UTC
Tornado report for Mazon, IL
Grundy County · 15,147 Homes in County
Tornado Report Description: An NWS storm survey confirmed that an EF-0 tornado with estimated peak winds of 80 mph_ a path length of 1.6 miles_ and a peak width of 250 yards occurred in Norman Township_ southwest of Morris.
NWS Tornado Report Location: 5 E Seneca, IL
UNK category
Jun 24, 2016
2:29 AM UTC
Tornado report for Mazon, IL
Grundy County · 15,147 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: 3 ENE Mazon, IL
EF1 category
Jun 22, 2015
8:43 PM CST-6
Tornado report for Mazon, IL
Grundy County · 15,147 Homes in County
Tornado Report Description: The tornado blew off a portion of the roof of a house and snapped a large tree. Peak winds were estimated at 95 mph. (Tornado 7 of 10).
NWS Tornado Report Location: 1.8 WNW Gorman, IL
EF0 category
May 28, 2013
7:18 PM CST-6
Tornado report for Mazon, IL
Grundy County · 15,147 Homes in County
Tornado Report Description: An EF0 tornado touched down northeast of Mazon near Reed Road, west of Higgins Road where a power pole was blown down. The tornado moved northeast and blew down part of a tree on Higgins Road just south of Spring Road. Three more power poles were blown down on Campbell Road. Doors were blown off an outbuilding nearby before the tornado dissipated west of Coal City.
NWS Tornado Report Location: 2.05 WSW Gorman, IL
Showing 4 of 4
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 Mazon, IL on the Interactive Map

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Browse ZIP Codes with NWS Storm Reports in Mazon

60444 42
Mazon, IL Hail, wind & tornado reports

NWS Storm Reports & Census Data

U.S. Census Data · City

Mazon, IL area census snapshot

People & households
Population1,424
Households497
Housing units518
Income
Median household income$76,458
$100k+ households42.1%
$150k+ households19.5%
Housing stock
Single-family detached415
Attached single-family53
Small multifamily48
Large multifamily0
Mobile homes2
Housing mix
Single-family share80.1%
Attached-home share10.2%
Multifamily share9.3%
Mobile-home share0.4%
Ownership & occupancy
Owner-occupied390
Renter-occupied107
Vacant units21
Home value & age
Median home value$203,100
Owner homes $300k+18.5%
Owner homes $500k+4.4%
Owner homes $750k+--
Median year built1975
Older-home share59.7%
Vehicle context
Households with cars460
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 Mazon have on record?

Our records show 12 hail, 27 wind, and 4 tornado reports in and near Mazon, IL, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on August 11, 2026.

What is the largest hail ever reported in Mazon?

The largest hail size in these storm-report records in and near Mazon, IL is 1.75″. It was reported near E Mazon, IL on April 10, 1999.

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

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

I am selling a home in Mazon — 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 Mazon address?

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