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

Hail, Wind & Tornado Reports in and near Grand River, IA

Public hail, wind, and tornado reports in and near Grand River, IA from June 11, 1969 through May 19, 2025, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 55401 — search hail, wind and tornado public reports for any U.S. ZIP code 
Hail Reports
8
Wind Reports
7
Tornado Reports
3
Max Hail Size
2.75″
Source  NOAA SPC · NWS Local Storm Reports Coverage  Grand River, IA · 1969–present Updated  Daily · last May 19, 2025

Latest NWS Hail Reports in and near Grand River, IA

8 reports
Free hail report for your home →
2.00″ hail
May 19, 2025
9:08 PM UTC
Hail report for Grand River, IA
Decatur County · 2,834 Homes in County
Hail Report Description: Relayed by media. Delayed report. Time estimated by radar.
NWS Hail Report Location: Grand River, IA
0.88″ hail
Sep 17, 2015
9:07 PM CST-6
Hail report for Grand River, IA
Decatur County · 2,834 Homes in County
Hail Report Description: Public reported nickel sized hail. Delayed report from September 17th.
NWS Hail Report Location: 2.51 ESE Grand River, IA
2.75″ hail
Jun 4, 2005
6:52 PM CST
Hail report for Grand River, IA
Decatur County · 2,834 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Grand River, IA
1.00″ hail
Aug 26, 2004
7:45 PM CST
Hail report for Grand River, IA
Decatur County · 2,834 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Grand River, IA
1.75″ hail
May 27, 2004
10:52 AM CST
Hail report for Grand River, IA
Decatur County · 2,834 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 N Decatur City, IA
1.00″ hail
Sep 7, 2001
7:32 PM CST
Hail report for Grand River, IA
Decatur County · 2,834 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Grand River, IA
1.75″ hail
May 13, 2001
11:11 AM CST
Hail report for Grand River, IA
Decatur County · 2,834 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Grand River, IA
1.00″ hail
Apr 8, 2001
9:05 PM CST
Hail report for Grand River, IA
Decatur County · 2,834 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3 N Grand River, IA
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 Grand River, IA

7 reports
Free hail report + wind check →
60 mph
May 11, 2011
5:08 PM CST-6
Wind report for Grand River, IA
Decatur County · 2,834 Homes in County
Wind Report Description: Spotter reported 60 plus MPH winds with horizontal rain and strong shaking of vehicles.
NWS Wind Report Location: 2.94 NE Westerville, IA
60 mph
Jun 15, 2008
9:37 AM CST-6
Wind report for Grand River, IA
Decatur County · 2,834 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: .52 W Grand River, IA
66 mph
Aug 26, 2004
7:45 PM CST
Wind report for Grand River, IA
Decatur County · 2,834 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Grand River, IA
58 mph
Aug 25, 2004
11:50 AM CST
Wind report for Grand River, IA
Decatur County · 2,834 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Grand River, IA
60 mph
Sep 7, 2001
7:32 PM CST
Wind report for Grand River, IA
Decatur County · 2,834 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Grand River, IA
UNK mph
Jul 19, 1982
7:05 AM CST
Wind report for Grand River, IA
Decatur County · 2,834 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, IA
UNK mph
Jun 11, 1969
7:00 PM CST
Wind report for Grand River, IA
Decatur County · 2,834 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, IA
Showing 7 of 7
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 Grand River, IA

3 reports
EF1 category
Nov 11, 2015
2:39 PM CST-6
Tornado report for Grand River, IA
Decatur County · 2,834 Homes in County
Tornado Report Description: Tornado moved into Decatur county from Ringgold county. NWS storm survey then tracked the tornado across northwest Decatur county. A cattle lean-to was destroyed along with two other outbuildings damaged. There was extensive tree damage in a small area near the town of Grand River.
NWS Tornado Report Location: 4.39 SW Grand River, IA
F0 category
May 27, 1996
2:34 PM CST
Tornado report for Grand River, IA
Decatur County · 2,834 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Grand River, IA
F0 category
Jul 8, 1986
9:45 PM CST
Tornado report for Grand River, IA
Decatur County · 2,834 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
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 Grand River, IA on the Interactive Map

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Browse ZIP Codes with NWS Storm Reports in Grand River

50108 20
Grand River, IA Hail, wind & tornado reports

NWS Storm Reports & Census Data

U.S. Census Data · City

Grand River, IA area census snapshot

People & households
Population189
Households98
Housing units127
Income
Median household income$35,833
$100k+ households18.4%
$150k+ households10.2%
Housing stock
Single-family detached103
Attached single-family4
Small multifamily18
Large multifamily0
Mobile homes2
Housing mix
Single-family share81.1%
Attached-home share3.2%
Multifamily share14.2%
Mobile-home share1.6%
Ownership & occupancy
Owner-occupied69
Renter-occupied29
Vacant units29
Home value & age
Median home value$38,400
Owner homes $300k+--
Owner homes $500k+--
Owner homes $750k+--
Median year built1938
Older-home share71.7%
Vehicle context
Households with cars96
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 Grand River have on record?

Our records show 8 hail, 7 wind, and 3 tornado reports in and near Grand River, IA, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on May 19, 2025.

What is the largest hail ever reported in Grand River?

The largest hail size in these storm-report records in and near Grand River, IA is 2.75″. It was reported near Grand River, IA on June 4, 2005.

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

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

I am selling a home in Grand River — 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 Grand River address?

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