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

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

Public hail, wind, and tornado reports in and near Marengo, IA from June 11, 1969 through August 12, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 52301 — search hail, wind and tornado public reports for any U.S. ZIP code 
Hail Reports
17
Wind Reports
28
Tornado Reports
5
Max Hail Size
1.75″
Source  NOAA SPC · NWS Local Storm Reports Coverage  Marengo, IA · 1969–present Updated  Daily · last Aug 12, 2026

Latest NWS Hail Reports in and near Marengo, IA

17 reports
Free hail report for your home →
1.00″ hail
May 7, 2023
9:35 PM UTC
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: QUARTER SIZED HAIL.
NWS Hail Report Location: 1 S Marengo, IA
1.00″ hail
May 7, 2023
9:35 PM UTC
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: MOSTLY DIMES.
NWS Hail Report Location: 1 WSW Marengo, IA
1.50″ hail
May 7, 2023
9:32 PM UTC
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 4 N Marengo, IA
1.00″ hail
May 26, 2018
6:09 AM UTC
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: DELAYED REPORT AND TIME ESTIMATED FROM RADAR. HAIL BETWEEN AN NICKEL AND QUARTER SIZE.
NWS Hail Report Location: 2 SSW Marengo, IA
0.75″ hail
Jun 22, 2013
5:59 AM CST-6
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: A trained spotter reported pea to penny sized hail.
NWS Hail Report Location: N Marengo, IA
1.00″ hail
Apr 3, 2011
5:17 PM CST-6
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: Quarter sized hail fell 1 mile south of Marengo, IA at 617 pm CDT April 3.
NWS Hail Report Location: 1.38 S Marengo, IA
0.75″ hail
Apr 3, 2011
5:14 PM CST-6
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1.38 S Marengo, IA
1.00″ hail
Jun 21, 2009
7:00 PM CST-6
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: Quarter-sized hail fell in Marengo, IA around 800 pm June 21.
NWS Hail Report Location: N Marengo, IA
0.88″ hail
Mar 31, 2008
4:59 PM CST-6
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: A trained spotter reported nickel size hail 2 miles north of Marengo.
NWS Hail Report Location: 2 N Marengo, IA
0.88″ hail
Mar 31, 2007
2:49 PM CST-6
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: A spotter reported hail the size of nickels.
NWS Hail Report Location: N Marengo, IA
0.75″ hail
Jun 30, 2006
9:34 AM CST
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: pea to penny size hail with heavy rain.
NWS Hail Report Location: 6 NE Marengo, IA
1.00″ hail
Apr 13, 2006
6:31 PM CST
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Marengo, IA
0.75″ hail
Oct 22, 2004
11:38 AM CST
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: Cherry sized hail reported by Co-op
NWS Hail Report Location: Marengo, IA
1.00″ hail
May 10, 2001
5:15 PM CST
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: Quarter sized hail reported by law enforcement.
NWS Hail Report Location: Marengo, IA
1.00″ hail
May 17, 1991
4:30 PM CST
Hail report for Marengo, IA
Iowa County · 5,747 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, IA
Showing 15 of 17
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 Marengo, IA

28 reports
Free hail report + wind check →
UNK mph
Aug 12, 2026
11:05 AM UTC
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: Branches and trees downed in town.
NWS Wind Report Location: Marengo, IA
UNK mph
Aug 12, 2026
10:05 AM UTC
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: Corrects timing. Branches and trees downed in town.
NWS Wind Report Location: Marengo, IA
UNK mph
Jul 20, 2026
10:29 PM UTC
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: Two trees down on county roads northern part of Iowa County_ time estimated from radar.
NWS Wind Report Location: 3 Nne Marengo, IA
65 mph
Mar 17, 2025
12:50 AM UTC
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 2 E Marengo, IA
60 mph
May 7, 2023
9:35 PM UTC
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: ESTIMATED HIGHER THAN 60 MPH WIND GUSTS.
NWS Wind Report Location: 1 S Marengo, IA
65 mph
May 7, 2023
9:33 PM UTC
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 1 WSW Marengo, IA
UNK mph
Jun 14, 2017
10:20 AM UTC
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: WIND GUSTS ESTIMATED TO BE 60 TO 65 MPH ON A GUST FRONT DOWNED MULTIPLE TREES IN TOWN. ONE FELL ONTO SOME POWER LINES WHICH THEN SNAPPED THE UTILITY POLE. TIME ESTIMATED.
NWS Wind Report Location: Marengo, IA
60 mph
May 17, 2017
10:42 PM UTC
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: RELAYED FROM DSM
NWS Wind Report Location: Marengo, IA
UNK mph
May 17, 2017
10:42 PM UTC
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: RELAYED FROM DSM - LARGE TREE DOWN
NWS Wind Report Location: Marengo, IA
80 mph
Mar 7, 2017
2:30 AM UTC
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: RELAYED FROM A TRAINED SPOTTER
NWS Wind Report Location: 1 W Marengo, IA
70 mph
Nov 11, 2015
4:45 PM CST-6
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: A NWS storm survey team reported a roof was ripped off a metal building and a grain leg from a grain bin was ripped off.
NWS Wind Report Location: 1.38 S Marengo, IA
70 mph
Jun 30, 2014
1:30 PM CST-6
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: A trained spotter estimated winds of 60 to 70 mph.
NWS Wind Report Location: 2.07 S Marengo, IA
60 mph
Jun 30, 2014
1:30 PM CST-6
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: A trained spotter reported 60 mph brought limbs down.
NWS Wind Report Location: 3.45 N Marengo, IA
70 mph
Apr 27, 2014
3:09 PM CST-6
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: A trained spotter estimated winds gusts to be 60 to 70 mph with small branches coming down.
NWS Wind Report Location: 3.45 N Marengo, IA
70 mph
Aug 9, 2012
5:55 PM CST-6
Wind report for Marengo, IA
Iowa County · 5,747 Homes in County
Wind Report Description: Emergency Manager reported multiple trees down in town.
NWS Wind Report Location: N Marengo, IA
Showing 15 of 28
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 Marengo, IA

5 reports
F0 category
Mar 22, 1991
6:16 PM CST
Tornado report for Marengo, IA
Iowa County · 5,747 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
F1 category
Jun 10, 1986
9:30 PM CST
Tornado report for Marengo, IA
Iowa County · 5,747 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
F1 category
Aug 8, 1979
6:00 PM CST
Tornado report for Marengo, IA
Iowa County · 5,747 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
UNK category
Aug 15, 1977
8:30 PM CST
Tornado report for Marengo, IA
Iowa County · 5,747 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
F1 category
May 18, 1971
5:45 PM CST
Tornado report for Marengo, IA
Iowa County · 5,747 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
Showing 5 of 5
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 Marengo, IA on the Interactive Map

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Browse ZIP Codes with NWS Storm Reports in Marengo

52301 66
Marengo, IA Hail, wind & tornado reports

NWS Storm Reports & Census Data

U.S. Census Data · City

Marengo, IA area census snapshot

People & households
Population2,823
Households1,152
Housing units1,233
Income
Median household income$58,125
$100k+ households31.0%
$150k+ households8.6%
Housing stock
Single-family detached924
Attached single-family11
Small multifamily173
Large multifamily36
Mobile homes89
Housing mix
Single-family share74.9%
Attached-home share0.9%
Multifamily share17.0%
Mobile-home share7.2%
Ownership & occupancy
Owner-occupied776
Renter-occupied376
Vacant units81
Home value & age
Median home value$114,100
Owner homes $300k+0.9%
Owner homes $500k+--
Owner homes $750k+--
Median year built1958
Older-home share74.9%
Vehicle context
Households with cars1,036
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 Marengo have on record?

Our records show 17 hail, 28 wind, and 5 tornado reports in and near Marengo, IA, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on August 12, 2026.

What is the largest hail ever reported in Marengo?

The largest hail size in these storm-report records in and near Marengo, IA is 1.75″. It was reported near Marengo, IA on June 20, 1974.

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

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

I am selling a home in Marengo — 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 Marengo address?

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