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

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

Public hail, wind, and tornado reports in and near Merrimac, WI from July 20, 1980 through May 28, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 53561 — search hail, wind and tornado public reports for any U.S. ZIP code 
Hail Reports
8
Wind Reports
10
Tornado Reports
2
Max Hail Size
1.75″
Source  NOAA SPC · NWS Local Storm Reports Coverage  Merrimac, WI · 1980–present Updated  Daily · last May 28, 2026

Latest NWS Hail Reports in and near Merrimac, WI

8 reports
Free hail report for your home →
1.00″ hail
Apr 28, 2026
1:22 AM UTC
Hail report for Merrimac, WI
Sauk County · 21,506 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2 N Merrimac, WI
1.75″ hail
Apr 13, 2018
1:56 PM UTC
Hail report for Merrimac, WI
Sauk County · 21,506 Homes in County
Hail Report Description: DEVIL'S HEAD SKI RESORT.
NWS Hail Report Location: 3 N Merrimac, WI
0.75″ hail
Apr 25, 2008
3:27 PM CST-6
Hail report for Merrimac, WI
Sauk County · 21,506 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2 NE Merrimac, WI
0.75″ hail
Jul 23, 2005
12:23 PM CST
Hail report for Merrimac, WI
Sauk County · 21,506 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Merrimac, WI
0.88″ hail
Jul 16, 2004
2:35 PM CST
Hail report for Merrimac, WI
Sauk County · 21,506 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Merrimac, WI
1.75″ hail
Apr 18, 2002
3:33 PM CST
Hail report for Merrimac, WI
Sauk County · 21,506 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Merrimac, WI
1.00″ hail
Apr 18, 2002
3:00 PM CST
Hail report for Merrimac, WI
Sauk County · 21,506 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Merrimac, WI
1.00″ hail
Feb 11, 1999
1:31 PM CST
Hail report for Merrimac, WI
Sauk County · 21,506 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Merrimac, WI
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.

Latest NWS Wind Reports in and near Merrimac, WI

10 reports
Free hail report + wind check →
UNK mph
May 28, 2026
1:00 AM UTC
Wind report for Merrimac, WI
Sauk County · 21,506 Homes in County
Wind Report Description: Reports of trees and powerlines down. Time estimated from radar.
NWS Wind Report Location: Merrimac, WI
UNK mph
Apr 14, 2026
5:06 AM UTC
Wind report for Merrimac, WI
Sauk County · 21,506 Homes in County
Wind Report Description: Trees and power lines down. Trees on homes.
NWS Wind Report Location: Merrimac, WI
UNK mph
Jul 17, 2023
1:12 AM UTC
Wind report for Merrimac, WI
Sauk County · 21,506 Homes in County
Wind Report Description: Downburst winds (estimated 50-60 mph) resulted in numerous trees downed in the vicinity of Highways 113 & 78 specifically on Eagle Point Drive... Lakeview Avenue... Lucille Lane and Grandview and West Grandview. Per Emergency Manager... people in Merrimac who have experienced damage can call 211.
NWS Wind Report Location: 3 W Merrimac, WI
UNK mph
Jul 17, 2023
1:11 AM UTC
Wind report for Merrimac, WI
Sauk County · 21,506 Homes in County
Wind Report Description: Large tree down. Pontoon boat overturned at dock on Lake Wisconsin. Time estimated from radar.
NWS Wind Report Location: Merrimac, WI
UNK mph
Jun 15, 2022
10:41 PM UTC
Wind report for Merrimac, WI
Sauk County · 21,506 Homes in County
Wind Report Description: TREE WENT THROUGH ROOF OF HOUSE. TIME ESTIMATED ON RADAR.
NWS Wind Report Location: Merrimac, WI
UNK mph
May 17, 2017
7:45 PM UTC
Wind report for Merrimac, WI
Sauk County · 21,506 Homes in County
Wind Report Description: SEVERAL TREES AND POWER LINES DOWN.
NWS Wind Report Location: 1 WSW Merrimac, WI
60 mph
Aug 3, 2004
4:26 PM CST
Wind report for Merrimac, WI
Sauk County · 21,506 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Merrimac, WI
60 mph
Jul 4, 2003
4:25 AM CST
Wind report for Merrimac, WI
Sauk County · 21,506 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 5 NE Merrimac, WI
UNK mph
May 17, 1982
2:45 PM CST
Wind report for Merrimac, WI
Sauk County · 21,506 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, WI
70 mph
Jul 20, 1980
1:30 AM CST
Wind report for Merrimac, WI
Sauk County · 21,506 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, WI
Showing 10 of 10
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 Merrimac, WI

2 reports
F0 category
Aug 18, 2005
5:00 PM CST
Tornado report for Merrimac, WI
Sauk County · 21,506 Homes in County
Tornado Report Description: A tornado spun up 1.8 miles west of Merrimac at 1700CST, along STH 78/113. The tornado headed southeast and dissipated 1.0 mile WSW of Merrimac at 1705 CST just short of the Sauk-Columbia County line in the Wisconsin River. Damage was confined to trees and power-lines. This tornado was rated an F0 with estimated wind speeds of 35-63 knots (40-72 mph). Average path width was about 50 yards.
NWS Tornado Report Location: 2 W Merrimac, WI
F2 category
Aug 18, 2005
4:33 PM CST
Tornado report for Merrimac, WI
Sauk County · 21,506 Homes in County
Tornado Report Description: This tornado spun up from the same supercell thunderstorm that spawned the "Viola" tornado earlier in Vernon and Richland counties. This Sauk County tornado spun up at 1633CST about 3.6 miles northeast of Leland, or about 1/4 mile south of the intersection of Ruff and Pine Hollow Roads. The tornado headed east-southeast for about 11.1 miles in Sauk County, and crossed the Columbia County line at 1655CST about 4.5 miles north-northeast of Prairie du Sac, between Wiegans Bay and a boat launch site. This tornado crossed CTH C about 0.5 mile west of Stones Pocket Road, and moved through old Badger Ammunition Plant just south of the greatest density of roads within the Plant grounds. This rain-wrapped tornado was video taped and photographed, and damaged many structures, trees, and power-lines. As for residential buildings, 10 received minor damage, 1 had major damage, and one was destroyed. One business building had minor damage. As for agricultural buildings, 5 received minor damage, and 6 were destroyed. This tornado was rated an F2 with estimated winds of 98-136 knots (113-157 mph). Average path width was about 150 yards.
NWS Tornado Report Location: 4 NE Leland, WI
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 in and near Merrimac, WI on the Interactive Map

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Browse ZIP Codes with NWS Storm Reports in Merrimac

53561 18
Merrimac, WI Hail, wind & tornado reports
53555 47
Lake Wisconsin, WI Hail, wind & tornado reports

NWS Storm Reports & Census Data

U.S. Census Data · City

Merrimac, WI area census snapshot

People & households
Population575
Households227
Housing units303
Income
Median household income$102,344
$100k+ households41.9%
$150k+ households15.9%
Housing stock
Single-family detached251
Attached single-family7
Small multifamily41
Large multifamily2
Mobile homes2
Housing mix
Single-family share82.8%
Attached-home share2.3%
Multifamily share14.2%
Mobile-home share0.7%
Ownership & occupancy
Owner-occupied184
Renter-occupied43
Vacant units76
Home value & age
Median home value$274,200
Owner homes $300k+41.3%
Owner homes $500k+25.5%
Owner homes $750k+8.2%
Median year built1964
Older-home share61.4%
Vehicle context
Households with cars225
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 Merrimac have on record?

Our records show 8 hail, 10 wind, and 2 tornado reports in and near Merrimac, WI, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on May 28, 2026.

What is the largest hail ever reported in Merrimac?

The largest hail size in these storm-report records in and near Merrimac, WI is 1.75″. It was reported near Merrimac, WI on April 13, 2018.

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

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

I am selling a home in Merrimac — 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 Merrimac address?

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