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

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

Public hail, wind, and tornado reports in and near Grand Mound, IA from March 13, 1990 through June 25, 2025, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 52751 — search hail, wind and tornado public reports for any U.S. ZIP code 
Hail Reports
6
Wind Reports
12
Tornado Reports
6
Max Hail Size
2.75″
Source  NOAA SPC · NWS Local Storm Reports Coverage  Grand Mound, IA · 1990–present Updated  Daily · last Jun 25, 2025

Latest NWS Hail Reports in and near Grand Mound, IA

6 reports
Free hail report for your home →
1.00″ hail
Apr 15, 2017
11:20 PM UTC
Hail report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Hail Report Description: RELAYED BY KWQC...TIME ESTIMATED FROM RADAR.
NWS Hail Report Location: Grand Mound, IA
2.00″ hail
Jul 13, 2015
4:00 PM CST-6
Hail report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.31 SSW Grand Mound, IA
1.00″ hail
Jul 13, 2015
3:59 PM CST-6
Hail report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.31 SSW Grand Mound, IA
2.75″ hail
Jul 27, 1995
4:50 PM CST
Hail report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Grand Mound, IA
1.75″ hail
Jul 27, 1995
4:46 PM CST
Hail report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Grand Mound, IA
1.75″ hail
Jul 27, 1995
4:41 PM CST
Hail report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Grand Mound, IA
Showing 6 of 6
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 Mound, IA

12 reports
Free hail report + wind check →
60 mph
Jun 25, 2025
9:42 PM UTC
Wind report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Wind Report Description: PWS measured a 60 MPH gust. Wires also reported down in Grand Mound.
NWS Wind Report Location: 2 SSE Grand Mound, IA
UNK mph
Jun 25, 2025
9:41 PM UTC
Wind report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Wind Report Description: Large trees down in town.
NWS Wind Report Location: Grand Mound, IA
UNK mph
May 8, 2024
10:03 AM UTC
Wind report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Wind Report Description: Damage to the roof of a building. Owner says the roof paneling is rated to 90 MPH.
NWS Wind Report Location: 3 SW Grand Mound, IA
UNK mph
May 8, 2024
10:03 AM UTC
Wind report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Wind Report Description: Many tree branches down in Grand Mound. Time estimated from radar.
NWS Wind Report Location: Grand Mound, IA
UNK mph
Jul 12, 2020
12:02 AM UTC
Wind report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Wind Report Description: LAW ENFORCEMENT RELAYED REPORT OF LARGE 3-4 FT DIAMETER TREE ON 270TH STREET SOUTHWEST OF DEWITT. TIME ESTIMATED FROM RADAR.
NWS Wind Report Location: 3 SE Grand Mound, IA
60 mph
Jun 18, 2010
6:22 PM CST-6
Wind report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Wind Report Description: Wind gusts estimated to be 60 mph blew down some tree limbs and flattened some corn near Grand Mound, IA at 722 pm June 18.
NWS Wind Report Location: 1.03 E Grand Mound, IA
70 mph
Jun 18, 2010
6:15 PM CST-6
Wind report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Wind Report Description: Wind gusts estimated to be 70 mph blew down some power lines and trees about 8 miles north of Donahue, IA around 715 pm June 18. Two trees fell onto a house. A nearby garage sustained damage to the roof and another garage was knocked down.
NWS Wind Report Location: .86 SW Grand Mound, IA
70 mph
Jul 24, 2009
8:00 PM CST-6
Wind report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Wind Report Description: Wind gusts estimated to be 70 mph blew down several large tree limbs in Grand Mound, IA around 900 pm July 24.
NWS Wind Report Location: 1.15 ENE Grand Mound, IA
60 mph
Aug 19, 2005
10:20 PM CST
Wind report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Wind Report Description: Law enforcement estimated a thunderstorm wind gust to 60 mph.
NWS Wind Report Location: Grand Mound, IA
90 mph
May 28, 1998
7:05 PM CST
Wind report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Grand Mound, IA
58 mph
Apr 15, 1994
1:30 AM CST
Wind report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Grand Mound, IA
58 mph
Mar 13, 1990
1:10 AM CST
Wind report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, IA
Showing 12 of 12
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 Mound, IA

6 reports
UNK category
May 24, 2024
12:45 PM UTC
Tornado report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Tornado Report Description: A tornado developed southeast of Dixon in Scott County and moved northeast into Clinton County. The intermittent tornado path was around 15 miles... to just east of Grand Mound... before lifting near Highway 61. The tornado caused minor tree and power pole damage... as well as damage to an outbuilding. The tornado was rated EF-0 with max winds around 90 mph. There were no injuries.
NWS Tornado Report Location: 4 SSW Grand Mound, IA
UNK category
Mar 31, 2023
10:50 PM UTC
Tornado report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Tornado Report Description: *** 1 INJ *** EF2 TORNADO... 17.5 MILE PATH LENGTH AND 350 YARD WIDTH.
NWS Tornado Report Location: Grand Mound, IA
UNK category
Aug 19, 2019
10:40 AM UTC
Tornado report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Tornado Report Description: A CONVERGENT DOWNBURST OCCURRED ON WEST END OF FARMSTEAD THAT CAUSED BRIEF SPIN UP TORNADO ON EASTERN EDGE OF PROPERTY. NUMEROUS TREE BRANCHES WERE DOWN WITH ONE TREE UPROOTED. THE HOME HAD TRIM... SHINGLE DAMAGE... AND A WINDOW BROKEN. GRASS WAS SPLATTERED ON GARAGE AND WIND DRIVEN HAIL ALSO NOTED ON WEST SIDE OF HOME AND GARAGE.
NWS Tornado Report Location: 3 SSW Grand Mound, IA
UNK category
Aug 29, 2018
12:10 AM UTC
Tornado report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Tornado Report Description: EF0 TORNADO WITH WINDS OF 80 MPH TOUCHED DOWN ON THE CLINTON AND SCOTT COUNTY LINES. MINOR DAMAGE MAINLY TO TREE BRANCHES WAS OBSERVED. THE TORNADO THEN STRENGTHENED AND CAUSED DAMAGE TO TREES AND HOUSE. TOWARDS THE END OF ITS PATH IT CAUSED MAINLY DAMAGE TO CORN.
NWS Tornado Report Location: 4 SSE Grand Mound, IA
UNK category
Mar 7, 2017
4:30 AM UTC
Tornado report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Tornado Report Description: SPOTTER ON HWY 30 BETWEEN GRAND MOUND AND CALUMUS LOOKING SOUTHEAST.
NWS Tornado Report Location: 4 SSE Grand Mound, IA
EF1 category
Apr 9, 2015
4:24 PM CST-6
Tornado report for Grand Mound, IA
Clinton County · 16,713 Homes in County
Tornado Report Description: The tornado touched down 8 miles west of Maysville and continued on path for 22 miles and lifted 2 miles south of DeWitt. The tornado began in Scott County, and was on the ground for another 5.8 miles after it moved into Clinton County. It was rated as an EF-1 after an NWS Storm Survey. The tornado snapped numerous trees and there was damage to farm outbuildings.
NWS Tornado Report Location: 5.01 SSE Grand Mound, IA
Showing 6 of 6
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 Mound, IA on the Interactive Map

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Browse ZIP Codes with NWS Storm Reports in Grand Mound

52751 23
Grand Mound, IA Hail, wind & tornado reports
52742 99
DeWitt, IA Hail, wind & tornado reports

NWS Storm Reports & Census Data

U.S. Census Data · City

Grand Mound, IA area census snapshot

People & households
Population554
Households216
Housing units223
Income
Median household income$84,286
$100k+ households55.6%
$150k+ households13.9%
Housing stock
Single-family detached195
Attached single-family5
Small multifamily23
Large multifamily0
Mobile homes0
Housing mix
Single-family share87.4%
Attached-home share2.2%
Multifamily share10.3%
Mobile-home share--
Ownership & occupancy
Owner-occupied173
Renter-occupied43
Vacant units7
Home value & age
Median home value$150,500
Owner homes $300k+14.5%
Owner homes $500k+--
Owner homes $750k+--
Median year built1948
Older-home share80.7%
Vehicle context
Households with cars210
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 Mound have on record?

Our records show 6 hail, 12 wind, and 6 tornado reports in and near Grand Mound, IA, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on June 25, 2025.

What is the largest hail ever reported in Grand Mound?

The largest hail size in these storm-report records in and near Grand Mound, IA is 2.75″. It was reported near Grand Mound, IA on July 27, 1995.

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

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

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

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