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

Hail, Wind & Tornado Reports in and near Decorah, IA

Public hail, wind, and tornado reports in and near Decorah, IA from July 8, 1957 through July 29, 2025, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 52101 — search hail, wind and tornado public reports for any U.S. ZIP code 
Hail Reports
50
Wind Reports
68
Tornado Reports
4
Max Hail Size
3.50″
Source  NOAA SPC · NWS Local Storm Reports Coverage  Decorah, IA · 1957–present Updated  Daily · last Jul 29, 2025

Latest NWS Hail Reports in and near Decorah, IA

30 reports
Free hail report for your home →
1.00″ hail
May 7, 2024
10:10 PM UTC
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: Social media report with picture.
NWS Hail Report Location: 8 NE Decorah, IA
1.25″ hail
Aug 18, 2014
5:09 PM CST-6
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: Half dollar sized hail fell east of Decorah.
NWS Hail Report Location: 2.61 ENE Decorah Muni Arpt, IA
1.75″ hail
Aug 18, 2014
5:05 PM CST-6
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: Golf ball sized hail shredded leaves southeast of Decorah.
NWS Hail Report Location: 2.01 E Decorah Muni Arpt, IA
0.88″ hail
Aug 18, 2014
3:15 PM CST-6
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.44 SW Sattre, IA
1.00″ hail
Aug 18, 2014
3:04 PM CST-6
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: Quarter sized hail fell southeast of Bluffton.
NWS Hail Report Location: 3.15 NNW Decorah Tatro Arpt, IA
1.00″ hail
Jun 29, 2014
8:00 PM CST-6
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: Quarter sized hail fell east of Decorah.
NWS Hail Report Location: 3.66 NE Decorah Muni Arpt, IA
1.00″ hail
Apr 12, 2014
3:40 PM CST-6
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: Quarter sized hail was reported in Decorah.
NWS Hail Report Location: .85 NE Decorah, IA
0.75″ hail
Jun 21, 2013
7:13 AM CST-6
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1.47 NNE Decorah, IA
2.00″ hail
Aug 9, 2012
3:50 PM CST-6
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: Hail the size of hen eggs was reported two miles west of Decorah.
NWS Hail Report Location: .7 S Decorah Tatro Arpt, IA
0.88″ hail
Jul 11, 2008
11:43 PM CST-6
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .53 NE Decorah, IA
0.75″ hail
May 31, 2008
4:53 PM CST-6
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: Penny size hail was reported by students at Luther College to KDEC radio in Decorah.
NWS Hail Report Location: .85 NE Decorah, IA
0.75″ hail
Mar 21, 2007
9:04 PM CST-6
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .86 NE Decorah, IA
0.75″ hail
Jul 1, 2006
5:30 PM CST
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 7 NE Decorah, IA
1.25″ hail
Jul 1, 2006
5:29 PM CST
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 6 NE Decorah, IA
0.75″ hail
May 26, 2005
5:59 PM CST
Hail report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Decorah, IA
Showing 15 of 30
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 Decorah, IA

30 reports
Free hail report + wind check →
UNK mph
Jul 29, 2025
5:11 AM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: Pines downed. Picture. Radar time estimated.
NWS Wind Report Location: 1 NW Decorah, IA
UNK mph
Aug 6, 2024
3:15 AM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: Fallen tree over roadway. Time estimated via radar.
NWS Wind Report Location: 7 ESE Decorah, IA
UNK mph
Aug 6, 2024
3:09 AM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: Roof damage.
NWS Wind Report Location: 6 NNE Decorah, IA
UNK mph
Aug 6, 2024
3:08 AM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: Many trees downed lying mostly NE to SW.
NWS Wind Report Location: 6 NNE Decorah, IA
UNK mph
Aug 6, 2024
3:08 AM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: Bunch of trees damaged off Canoe Valley Rd.
NWS Wind Report Location: 6 N Decorah, IA
UNK mph
Aug 28, 2022
1:05 AM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: DELAYED REPORT. TREES DOWN OVER THE ROAD. NO OTHER DETAILS KNOWN. TIME ESTIMATED FROM RADAR.
NWS Wind Report Location: 6 E Decorah, IA
UNK mph
Jul 24, 2022
4:25 AM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: MANY TREES AND POWERLINES DOWN ACROSS CENTRAL WINNESHIEK COUNTY FROM NORTH OF DECORAH TO FORT ATKINSON. TIME ESTIMATED FROM RADAR.
NWS Wind Report Location: Decorah, IA
UNK mph
Jul 24, 2022
4:25 AM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: TREES DOWN IN FREEPORT. TREE COMPLETELY BLOCKING ROAD NEAR CHURCH/CEMETERY DOWN FROM WELLINGTON. ANOTHER IN THE ROAD BUT CAN GET THROUGH ACROSS FROM RECYCLING CENTER.
NWS Wind Report Location: 3 E Decorah, IA
UNK mph
Jul 24, 2022
3:45 AM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: NUMEROUS TREES AND POWER LINES BLOWN DOWN.
NWS Wind Report Location: Decorah, IA
63 mph
May 26, 2020
10:20 PM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: MESONET STATION RDCI4 5 NW FRANKVILLE.
NWS Wind Report Location: 6 NW Frankville, IA
UNK mph
May 26, 2020
10:15 PM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: PUBLIC REPORT OF A 12 INCH DIAMETER TREE DOWN.
NWS Wind Report Location: 6 NW Frankville, IA
UNK mph
May 26, 2020
10:14 PM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: SOCIAL MEDIA REPORT OF METAL MACHINE SHED BLOWN DOWN... 1 MILE SOUTH OF DECORAH. LOCATION AND TIME ESTIMATED BASED ON RADAR.
NWS Wind Report Location: 1 S Decorah, IA
UNK mph
Jun 30, 2019
9:38 PM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: LOTS OF TREES BLOWN DOWN ACROSS THE ENTIRE COUNTY. TOO MANY REPORTS TO RELAY SPECIFIC LOCATIONS.
NWS Wind Report Location: Decorah, IA
UNK mph
Jul 13, 2018
9:54 PM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: TREES AND POWER LINES DOWN.
NWS Wind Report Location: Decorah, IA
UNK mph
Jun 30, 2018
9:35 PM UTC
Wind report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Wind Report Description: TREES AND POWER LINES DOWN AROUND COUNTY
NWS Wind Report Location: Decorah, IA
Showing 15 of 30
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 Decorah, IA

4 reports
UNK category
Aug 14, 2024
3:11 AM UTC
Tornado report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Tornado Report Description: Delayed report from August 5. This EF0 tornado damaged trees... crops... and one outbuilding. It was embedded within a downburst that resulted in a complex damage path. The tornado was quickly overcome by these downburst winds... which continued to produce tree damage for another half mile after the tornado circulation dissipated. Tornado lasted for 3 minutes.
NWS Tornado Report Location: 6 NNE Decorah, IA
F2 category
Jul 29, 1987
6:10 PM CST
Tornado report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
F1 category
Jul 10, 1984
2:16 PM CST
Tornado report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
F1 category
Aug 4, 1979
6:20 AM CST
Tornado report for Decorah, IA
Winneshiek County · 7,390 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
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 Decorah, IA on the Interactive Map

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Browse ZIP Codes with NWS Storm Reports in Decorah

52101 148
Decorah, IA Hail, wind & tornado reports

NWS Storm Reports & Census Data

U.S. Census Data · City

Decorah, IA area census snapshot

People & households
Population7,597
Households2,913
Housing units3,277
Income
Median household income$62,177
$100k+ households35.3%
$150k+ households9.8%
Housing stock
Single-family detached2,190
Attached single-family156
Small multifamily678
Large multifamily253
Mobile homes0
Housing mix
Single-family share66.8%
Attached-home share4.8%
Multifamily share28.4%
Mobile-home share--
Ownership & occupancy
Owner-occupied1,885
Renter-occupied1,028
Vacant units364
Home value & age
Median home value$234,600
Owner homes $300k+29.5%
Owner homes $500k+5.4%
Owner homes $750k+1.0%
Median year built1964
Older-home share69.7%
Vehicle context
Households with cars2,726
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 Decorah have on record?

Our records show 50 hail, 68 wind, and 4 tornado reports in and near Decorah, IA, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on July 29, 2025.

What is the largest hail ever reported in Decorah?

The largest hail size in these storm-report records in and near Decorah, IA is 3.50″. It was reported near Decorah, IA on August 25, 1965.

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

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

I am selling a home in Decorah — 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 Decorah address?

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