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

Hail, Wind & Tornado Reports in O'Brien County, IA

Public hail, wind, and tornado reports across O'Brien County, IA from June 9, 1963 through August 4, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 51201 — search hail, wind and tornado public reports for any U.S. ZIP code 
Hail Reports
196
Wind Reports
175
Tornado Reports
34
Max Hail Size
4.00″
Source  NOAA SPC · NWS Local Storm Reports Coverage  O'Brien County, IA · 1963–present Updated  Daily · last Aug 4, 2026

Latest NWS Hail Reports in O'Brien County

30 reports
Free hail report for your home →
1.00″ hail
Jun 28, 2026
11:09 AM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Sanborn, IA
1.25″ hail
May 26, 2026
6:37 AM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: mPING report of Half Dollar (1.25 in.) sized hail near Sanborn... IA. Time estimated via radar.
NWS Hail Report Location: Sanborn, IA
1.00″ hail
May 18, 2026
10:51 PM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: Report from mPING: Quarter (1.00 in.). Also had picture via social media.
NWS Hail Report Location: Sanborn, IA
1.75″ hail
May 18, 2026
1:09 AM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: Report from mPING: Golf Ball (1.75 in.).
NWS Hail Report Location: 3 S Sanborn, IA
1.50″ hail
Apr 13, 2026
11:44 PM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Sanborn, IA
1.25″ hail
Apr 13, 2026
11:41 PM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Sanborn, IA
1.00″ hail
Apr 13, 2026
11:40 PM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: Report from mPING: Quarter (1.00 in.).
NWS Hail Report Location: 3 S Sanborn, IA
1.50″ hail
Apr 13, 2026
11:40 PM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: Report from mPING: Ping Pong Ball (1.50 in.).
NWS Hail Report Location: Sanborn, IA
1.75″ hail
Apr 13, 2026
11:34 PM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: Social media report with picture of estimated hail size.
NWS Hail Report Location: 3 NNE Archer, IA
1.00″ hail
Apr 13, 2026
11:28 PM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Primghar, IA
1.75″ hail
Apr 13, 2026
11:08 PM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 4 SE Granville, IA
1.00″ hail
Sep 23, 2025
12:40 AM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: TS reported quarter sized hail at approximately 7:40 pm CDT. He also reported that at the time of the call... 7:45 pm... that the hail had ended and it was just really heavy rain.
NWS Hail Report Location: 3 WSW Primghar, IA
1.00″ hail
Sep 23, 2025
12:20 AM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: Social media post with picture of a hailstone the size of a quarter. Time confirmed with radar.
NWS Hail Report Location: Primghar, IA
2.00″ hail
Sep 23, 2025
12:00 AM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: EM reported 2 inch hail on the north side of Southerland. Pictures included confirm size. Time was estimated by radar.
NWS Hail Report Location: Sutherland, IA
2.00″ hail
Sep 22, 2025
11:40 PM UTC
Hail report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Hail Report Description: TS reported 2 inch hail between 6:40 and 6:50 pm CDT. Heavy rain and nickles to dimes ongoing at time of the call at 7:09 pm.
NWS Hail Report Location: 4 N Sutherland, 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 O'Brien County

30 reports
Free hail report + wind check →
54 mph
Aug 4, 2026
7:51 AM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: Personal weather station. Time estimated from radar.
NWS Wind Report Location: 6 Sw Moneta, IA
52 mph
Jul 26, 2026
2:54 AM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: Personal weather station.
NWS Wind Report Location: 4 E Sanborn, IA
UNK mph
Jul 5, 2026
4:57 AM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: Several large tree branches down and pine tree snapped ~15 feet above ground. Damage occurred sporadically from 11:57 pm and 12:06 am. Times estimated based on radar and doorbell camera footage.
NWS Wind Report Location: Sanborn, IA
UNK mph
Jul 29, 2025
4:14 AM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: Numerous tree branches broken... ranging from 6 to 18 inches in diameter. Some fell on houses. Many streets are blocked.
NWS Wind Report Location: Sanborn, IA
UNK mph
Jul 29, 2025
3:16 AM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: Many large branches across town knocked down by thunderstorm wind gusts. A camper was flipped upside down on the east side of town.
NWS Wind Report Location: Sheldon, IA
UNK mph
Jul 29, 2025
3:08 AM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: Highway 59 across the entire town is closed due to so many trees knocked down onto the road by thunderstorm wind gusts.
NWS Wind Report Location: Primghar, IA
UNK mph
Jul 29, 2025
2:50 AM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: Social media report with pictures of damage done to and RV business in Sheldon. Winds approximately 90 kts. Timing and wind speeds estimated by radar.
NWS Wind Report Location: 1 ENE Sheldon, IA
UNK mph
Jun 29, 2025
9:09 AM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: Photos of numerous large tree limbs down.
NWS Wind Report Location: 4 ESE Granville, IA
UNK mph
Jun 22, 2024
2:22 AM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: Storm damage on east side of Sheldon. Campers tossed and damaged... building and tree damage reported... including to fireworks stand. Time estimated via radar.
NWS Wind Report Location: 1 ENE Sheldon, IA
UNK mph
Jun 16, 2024
1:33 AM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: Leaning power poles. Time estimated from radar.
NWS Wind Report Location: 1 NNW Hartley, IA
UNK mph
May 31, 2024
9:16 PM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: Multiple RVs flipped and roof ripped off a machine shed.
NWS Wind Report Location: 1 ENE Sheldon, IA
UNK mph
May 8, 2024
2:15 AM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: EM reports that part of the roof of the new car wash in Sutherland was ripped off... and several homes had tree branches land on them.
NWS Wind Report Location: Sutherland, IA
UNK mph
Aug 15, 2023
12:53 AM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: Delayed report. Multiple reports of tree branches... limbs... and some tree trunks snapped.
NWS Wind Report Location: Paullina, IA
60 mph
Jul 10, 2023
10:15 PM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 4 NNE Sheldon, IA
UNK mph
Aug 27, 2022
10:30 PM UTC
Wind report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Wind Report Description: SOCIAL MEDIA REPORT OF FARM OUTBUILDING DESTROYED BY THUNDERSTORM WINDS. TIME ESTIMATED BY RADAR.
NWS Wind Report Location: 4 NNE Paullina, 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 O'Brien County

30 reports
UNK category
Apr 13, 2026
11:30 PM UTC
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: Corrects time of previous tornado report from 2 NE Archer. Start of brief tornado which tracked generally north and northwest for around 5 minutes. Track was through open fields with no visible damage. Location and track derived from eyewitness photos and video.
NWS Tornado Report Location: 2 NE Archer, IA
UNK category
Apr 13, 2026
10:30 PM UTC
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: Start of brief tornado which tracked generally north and northwest for around 5 minutes. Track was through open fields with no visible damage. Location and track derived from eyewitness photos and video.
NWS Tornado Report Location: 2 NE Archer, IA
UNK category
Jul 20, 2024
10:10 PM UTC
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: [Landspout] Brief touchdown - no known damage. Report with video via social media. Time and location estimated from report and radar data.
NWS Tornado Report Location: 3 W Primghar, IA
UNK category
May 31, 2024
9:16 PM UTC
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: Corrects previous tstm wnd dmg report from 1 ENE Sheldon. Multiple RVs flipped and roof ripped off a machine shed. Upon further investigation... damage was caused by a brief tornado.
NWS Tornado Report Location: 1 ENE Sheldon, IA
EF0 category
Oct 23, 2015
5:21 PM CST-6
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: A brief tornado in a field caused little damage.
NWS Tornado Report Location: 2.4 SE Sheldon, IA
EF0 category
May 11, 2014
7:59 PM CST-6
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: A tornado damaged a trees, and damaged a vehicle with flying debris.
NWS Tornado Report Location: 2.82 E Sheldon, IA
EF0 category
May 4, 2012
2:50 PM CST-6
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: A brief tornado caused no reported damage.
NWS Tornado Report Location: 3.11 WNW Primghar, IA
EF1 category
Jun 25, 2010
10:42 PM CST-6
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: A tornado damaged the roof of a home and tore the chimney off, and destroyed a machine shed on the same property. The tornado also blew down several trees and blew a trampoline into a tree. The tornado also caused an unknown amount of crop damage.
NWS Tornado Report Location: 1.38 N Germantown, IA
EF0 category
Jun 25, 2010
10:05 PM CST-6
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: A tornado caused no reported damage.
NWS Tornado Report Location: 2.05 NW Philby, IA
EF0 category
Jun 22, 2010
10:25 PM CST-6
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: A brief tornado caused no reported damage. The tornado was also observed by a trained spotter.
NWS Tornado Report Location: 2.94 SSW Paullina Muni Arpt, IA
EF0 category
Jun 1, 2010
12:22 PM CST-6
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: A brief tornado caused no reported damage.
NWS Tornado Report Location: 3.46 WNW Sanborn, IA
EF1 category
Jun 11, 2008
5:20 PM CST-6
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: A tornado damaged a hoop barn.
NWS Tornado Report Location: 1.38 S Calumet, IA
EF2 category
Jun 11, 2008
5:06 PM CST-6
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: A tornado destroyed several outbuildings, moved a 1.5 ton wagon, heavily damaged a machine shed containing farm equipment and also damaged a nearby house on the same farm. Also destroyed another machine shed at a different location, destroyed a pole barn, damaged a grain bin, broke or blew down several power poles and power lines, and caused tree damage.
NWS Tornado Report Location: 2.13 NNE Calumet, IA
EF0 category
Jun 11, 2008
4:49 PM CST-6
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: A brief tornado caused no reported damage.
NWS Tornado Report Location: N Paullina Muni Arpt, IA
EF0 category
May 1, 2008
6:42 PM CST-6
Tornado report for O'Brien County, IA
O'Brien County · 5,468 Homes in County
Tornado Report Description: A brief tornado caused no reported damage.
NWS Tornado Report Location: 3 S Sheldon, 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 O'Brien County on the Interactive Map

Report type
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Wind
Tornado

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Browse Cities with NWS Storm Reports in O'Brien County

NWS Storm Reports & Census Data

U.S. Census Data · County

O'Brien County, IA area census snapshot

People & households
Population14,103
Households5,791
Housing units6,544
Income
Median household income$68,216
$100k+ households42.9%
$150k+ households12.4%
Housing stock
Single-family detached5,468
Attached single-family151
Small multifamily398
Large multifamily379
Mobile homes148
Housing mix
Single-family share83.6%
Attached-home share2.3%
Multifamily share11.9%
Mobile-home share2.3%
Ownership & occupancy
Owner-occupied4,477
Renter-occupied1,314
Vacant units753
Home value & age
Median home value$158,900
Owner homes $300k+15.4%
Owner homes $500k+1.9%
Owner homes $750k+0.4%
Median year built1959
Older-home share73.9%
Vehicle context
Households with cars5,467
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 O'Brien County

Get a Remote Hail Inspection

Not sure if hail may have affected your home in O'Brien 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 O'Brien County have on record?

Our records show 196 hail, 175 wind, and 34 tornado reports in O'Brien County, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on August 4, 2026.

What is the largest hail ever reported in O'Brien County?

The largest hail size in these storm-report records in O'Brien County is 4.00″. It was reported near Sheldon, IA on July 9, 2009.

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

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

I am selling a home in O'Brien 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 O'Brien County address?

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