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

Hail, Wind & Tornado Reports in Clay County, IA

Public hail, wind, and tornado reports across Clay County, IA from April 19, 1955 through August 9, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 51301 — search hail, wind and tornado public reports for any U.S. ZIP code 
Hail Reports
243
Wind Reports
187
Tornado Reports
39
Max Hail Size
4.25″
Source  NOAA SPC · NWS Local Storm Reports Coverage  Clay County, IA · 1955–present Updated  Daily · last Aug 9, 2026

Latest NWS Hail Reports in Clay County

30 reports
Free hail report for your home →
0.70″ hail
Aug 9, 2026
8:39 AM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: Pea to dime sized hail.
NWS Hail Report Location: 1 Nne Spencer, IA
1.00″ hail
Aug 9, 2026
8:22 AM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: A few stones as large as a quarter. No damage and no strong winds.
NWS Hail Report Location: 2 Ese Everly, IA
1.50″ hail
Jun 28, 2026
12:14 PM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Webb, IA
1.25″ hail
May 16, 2026
12:30 AM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: Report from social media.
NWS Hail Report Location: 2 NNW Greenville, IA
1.50″ hail
Apr 14, 2026
12:58 AM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 5 NE Webb, IA
1.00″ hail
Apr 14, 2026
12:52 AM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Webb, IA
1.00″ hail
Apr 14, 2026
12:24 AM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: Breif heavy rain and hail up to the size of quarters.
NWS Hail Report Location: 2 NW Peterson, IA
1.50″ hail
Apr 28, 2025
10:20 PM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: Mostly dime to quarter sized... but some as large as ping pong balls. Time estimated via radar.
NWS Hail Report Location: Dickens, IA
1.00″ hail
Apr 28, 2025
9:29 PM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Fostoria, IA
1.00″ hail
Jun 21, 2024
10:47 PM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: In addition to a few dime sized hail stones... 1.35 inch of rain occurred in 22 minutes as the storm pushed through.
NWS Hail Report Location: 6 ENE Dickens, IA
1.00″ hail
Jun 21, 2024
9:50 PM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: Report from mPING: Quarter (1.00 in.).
NWS Hail Report Location: 2 N Everly, IA
1.00″ hail
Jun 17, 2024
9:42 PM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Spencer, IA
1.75″ hail
May 24, 2024
7:49 AM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Spencer, IA
2.00″ hail
May 23, 2024
2:15 AM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: Social media report with pictures and tape measure for reference.
NWS Hail Report Location: Royal, IA
1.50″ hail
May 23, 2024
1:32 AM UTC
Hail report for Clay County, IA
Clay County · 6,149 Homes in County
Hail Report Description: Hail pea to ping-pong ball size.
NWS Hail Report Location: Webb, 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 Clay County

30 reports
Free hail report + wind check →
66 mph
Jun 30, 2026
7:34 AM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: Automated Equipment at Spencer Airport.
NWS Wind Report Location: 3 WNW Spencer, IA
68 mph
Jun 28, 2026
11:34 AM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: ASOS station KSPW Spencer Municipal Airport.
NWS Wind Report Location: 4 WNW Spencer, IA
UNK mph
May 18, 2026
1:49 AM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: Damage to the Greenville grain elevator. Branches and power lines also downed. Time estimated from radar.
NWS Wind Report Location: Greenville, IA
UNK mph
Apr 14, 2026
12:50 AM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: Measured wind gust to 72 mph on a personal weather station due to rear flank downdraft to south of tornado path. Damage to trees... shingles and siding. Some wind driven hail knocked out windows on camper and damaged siding.
NWS Wind Report Location: 1 NE Webb, IA
92 mph
Jul 29, 2025
3:42 AM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: ASOS station KSPW Spencer Municipal Airport.
NWS Wind Report Location: 4 WNW Spencer, IA
87 mph
Jul 29, 2025
3:39 AM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: ASOS station KSPW Spencer Municipal Airport.
NWS Wind Report Location: 4 WNW Spencer, IA
UNK mph
Jul 29, 2025
3:25 AM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: Trees uprooted in town. Report via mPING.
NWS Wind Report Location: Spencer, IA
UNK mph
Jul 28, 2025
6:36 AM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: Spotty minor tree damage across town... with scattered small branches and leaves blown down.
NWS Wind Report Location: Spencer, IA
59 mph
Jul 12, 2025
2:25 AM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Webb, IA
68 mph
Jun 16, 2025
11:14 PM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: Personal weather station.
NWS Wind Report Location: Webb, IA
UNK mph
Jun 11, 2025
7:56 PM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: Two trees down along 280th street.
NWS Wind Report Location: 3 W Fostoria, IA
60 mph
Jun 22, 2024
4:13 AM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: Spotter reported gusts in Spencer of 60+ mph.
NWS Wind Report Location: Spencer, IA
UNK mph
Jun 22, 2024
4:02 AM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: Report from mPING: 1-inch tree limbs broken; Shingles blown off. Time estimated via radar.
NWS Wind Report Location: 1 W Spencer, IA
75 mph
Jun 21, 2024
10:16 PM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: ASOS station KSPW Spencer Municipal Airport.
NWS Wind Report Location: 4 WNW Spencer, IA
UNK mph
Jul 12, 2023
11:15 AM UTC
Wind report for Clay County, IA
Clay County · 6,149 Homes in County
Wind Report Description: Trees and large branches down in town.
NWS Wind Report Location: Peterson, 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 Clay County

30 reports
UNK category
Jul 4, 2026
6:10 PM UTC
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: Brief touchdown witnessed by Sheriffs deputy.
NWS Tornado Report Location: 3 SE Greenville, IA
UNK category
Jul 4, 2026
4:11 PM UTC
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: Video of tornado on pond and coming onshore.
NWS Tornado Report Location: 2 ESE Everly, IA
UNK category
May 18, 2026
1:31 AM UTC
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: Social media video relayed by emergency manager of brief tornado. Location estimated.
NWS Tornado Report Location: 5 WSW Royal, IA
UNK category
Apr 14, 2026
12:50 AM UTC
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: Photo of tornado from EM.
NWS Tornado Report Location: 2 NNE Webb, IA
EF0 category
Jun 19, 2014
12:30 PM CST-6
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: A brief tornado caused no reported damage.
NWS Tornado Report Location: N Spencer, IA
EF0 category
Jun 18, 2014
12:15 AM CST-6
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: A brief tornado damaged a few outbuildings.
NWS Tornado Report Location: 2.88 WNW Royal, IA
EF0 category
Oct 4, 2013
7:47 PM CST-6
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: A brief tornado caused tree damage, including large branches blown down.
NWS Tornado Report Location: .84 NE Maclay, IA
EF0 category
May 1, 2012
8:40 PM CST-6
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: A tornado damaged several power poles.
NWS Tornado Report Location: 1.51 E Moneta, IA
EF0 category
Apr 21, 2012
3:43 PM CST-6
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: A weak tornado caused no reported damage.
NWS Tornado Report Location: 4.27 ESE Gillett Grove, IA
EF0 category
Apr 21, 2012
3:27 PM CST-6
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: A weak rope tornado caused no reported damage.
NWS Tornado Report Location: 3.77 SSE Spencer, IA
EF0 category
May 8, 2009
12:40 PM CST-6
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: A small tornado was observed moving across a plowed field.
NWS Tornado Report Location: 3.74 NE Gillett Grove, IA
EF0 category
Jun 11, 2008
6:25 PM CST-6
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: A brief tornado caused no reported damage.
NWS Tornado Report Location: 2.13 NNE Webb, IA
EF0 category
Jun 11, 2008
6:11 PM CST-6
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: A brief tornado caused no reported damage.
NWS Tornado Report Location: 2.13 NNE Dickens, IA
EF2 category
Jun 11, 2008
5:40 PM CST-6
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: A tornado destroyed or heavily damaged numerous outbuildings on at least 8 affected farmsteads, with damaged buildings including several large sheds. The tornado damaged numerous grain bins, most of which were carried off their foundations, with some being carried as much as a half mile. The ornado also overturned a camper, blew the top off a silo, destroyed a garage, broke windows on a house, and caused considerable damage to trees, power poles, and power lines.
NWS Tornado Report Location: 4 S Royal, IA
F0 category
Jul 26, 2006
5:25 PM CST
Tornado report for Clay County, IA
Clay County · 6,149 Homes in County
Tornado Report Description: A weak and brief tornado caused minor crop damage,
NWS Tornado Report Location: 3 W Spencer, IA
Showing 15 of 30
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 Clay County on the Interactive Map

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Browse Cities with NWS Storm Reports in Clay County

Spencer, IA 139
Hail, wind & tornado reports
Everly, IA 49
Hail, wind & tornado reports
Dickens, IA 48
Hail, wind & tornado reports
Royal, IA 45
Hail, wind & tornado reports
Webb, IA 45
Hail, wind & tornado reports
Fostoria, IA 27
Hail, wind & tornado reports
Peterson, IA 25
Hail, wind & tornado reports
Greenville, IA 22
Hail, wind & tornado reports
Rossie, IA 22
Hail, wind & tornado reports
Gillett Grove, IA 21
Hail, wind & tornado reports

NWS Storm Reports & Census Data

U.S. Census Data · County

Clay County, IA area census snapshot

People & households
Population16,446
Households7,249
Housing units8,141
Income
Median household income$64,082
$100k+ households38.2%
$150k+ households13.8%
Housing stock
Single-family detached6,149
Attached single-family125
Small multifamily1,043
Large multifamily678
Mobile homes146
Housing mix
Single-family share75.5%
Attached-home share1.5%
Multifamily share21.1%
Mobile-home share1.8%
Ownership & occupancy
Owner-occupied5,270
Renter-occupied1,979
Vacant units892
Home value & age
Median home value$171,500
Owner homes $300k+18.4%
Owner homes $500k+3.9%
Owner homes $750k+1.1%
Median year built1966
Older-home share70.6%
Vehicle context
Households with cars6,889
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.

Top ZIP Codes with NWS Storm Reports in Clay County

51301 194
Spencer, IA Hail, wind & tornado reports
51346 91
Hartley, IA Hail, wind & tornado reports
51358 62
Ruthven, IA Hail, wind & tornado reports
51364 50
Terril, IA Hail, wind & tornado reports
51366 47
Webb, IA Hail, wind & tornado reports
51058 44
Sutherland, IA Hail, wind & tornado reports
51338 42
Everly, IA Hail, wind & tornado reports
50585 41
Sioux Rapids, IA Hail, wind & tornado reports
51047 37
Peterson, IA Hail, wind & tornado reports
51333 34
Dickens, IA Hail, wind & tornado reports
51357 34
Royal, IA Hail, wind & tornado reports
50565 31
Marathon, IA Hail, wind & tornado reports
51033 26
Linn Grove, IA Hail, wind & tornado reports
51343 24
Greenville, IA Hail, wind & tornado reports
50515 21
Ayrshire, IA Hail, wind & tornado reports

Get a Remote Hail Inspection

Not sure if hail may have affected your home in Clay County? Ask a local pro for a Remote Hail Inspection. They can review hail activity for your property and help you decide whether an in-person roof or exterior inspection makes sense.

Frequently asked questions

for homeowners, buyers & sellers
How many hail, wind, and tornado reports does Clay County have on record?

Our records show 243 hail, 187 wind, and 39 tornado reports in Clay County, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on August 9, 2026.

What is the largest hail ever reported in Clay County?

The largest hail size in these storm-report records in Clay County is 4.25″. It was reported near Spencer, IA on May 21, 2004.

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

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

I am selling a home in Clay County — 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 Clay County address?

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