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

Hail, Wind & Tornado Reports in and near Riverton, WY

Public hail, wind, and tornado reports in and near Riverton, WY from June 6, 1967 through August 25, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Hail Reports
43
Wind Reports
84
Tornado Reports
4
Max Hail Size
2.00″
Source  NOAA SPC · NWS Local Storm Reports Coverage  Riverton, WY · 1967–present Updated  Daily · last Aug 25, 2026

Latest NWS Hail Reports in and near Riverton, WY

30 reports
Free hail report for your home →
1.25″ hail
Jun 23, 2023
6:05 PM UTC
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 WSW Riverton, WY
1.75″ hail
Jun 23, 2023
6:05 PM UTC
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 NNE Riverton, WY
1.75″ hail
Jun 23, 2023
6:05 PM UTC
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 W Riverton, WY
2.00″ hail
Jun 23, 2023
6:05 PM UTC
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 NE Riverton, WY
1.25″ hail
Jun 23, 2023
6:05 PM UTC
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2 W Riverton, WY
1.00″ hail
Jun 23, 2023
6:02 PM UTC
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 6 WNW Riverton, WY
1.00″ hail
Jun 23, 2023
6:02 PM UTC
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 4 W Riverton, WY
1.00″ hail
May 26, 2023
9:40 PM UTC
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 6 ESE Riverton, WY
1.00″ hail
Jul 1, 2019
9:24 PM UTC
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: LOST WELLS BUTTE QUARTER SIZE HAIL
NWS Hail Report Location: 11 NW Riverton, WY
0.75″ hail
Jun 14, 2015
6:20 PM MST-7
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: Hail up to the size of pennies fell in a swath from west of Riverton, to the NWS office, to about five miles north of town.
NWS Hail Report Location: 3.93 SW (Riw)Riverton Rgnl A, WY
0.75″ hail
Jun 5, 2015
6:57 PM MST-7
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: An off-duty NWS Meteorologist reported penny sized hail covering Gas Hills Road to a depth of one inch.
NWS Hail Report Location: 6.6 ESE Riverton, WY
0.75″ hail
Jun 26, 2014
3:28 PM MST-7
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: An off-duty NWS employee reported 0.75 inch diameter hail. In addition, rainfall of around one-half inch to about one inch fell in less than 30 minutes. The result was minor street flooding in many areas of central and east Riverton.
NWS Hail Report Location: 2.85 S (Riw)Riverton Rgnl A, WY
0.75″ hail
Jun 24, 2014
5:42 PM MST-7
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: An off-duty NWS employee reported penny sized hail along Missouri Valley Road.
NWS Hail Report Location: 9.38 ESE Midvale, WY
0.88″ hail
Jun 22, 2014
4:52 PM MST-7
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: Numerous trained spotters reported penny to nickel sized hail in and around Riverton.
NWS Hail Report Location: 2 W Riverton, WY
0.75″ hail
May 6, 2014
12:42 PM MST-7
Hail report for Riverton, WY
Fremont County · 12,397 Homes in County
Hail Report Description: Penny sized hail fell at a residence near the Riverton Country Club.
NWS Hail Report Location: 3.17 S (Riw)Riverton Rgnl A, WY
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 and near Riverton, WY

30 reports
Free hail report + wind check →
52 mph
Aug 25, 2026
11:40 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: Mesonet station PC633 Poston Ranch Rd (PC).
NWS Wind Report Location: 19 Ese Riverton, WY
54 mph
Aug 25, 2026
10:53 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: ASOS station KRIW Riverton Airport (ASOS).
NWS Wind Report Location: 5 Nw Riverton, WY
53 mph
Aug 24, 2026
11:00 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: Mesonet station PC633 Poston Ranch Rd (PC).
NWS Wind Report Location: 19 Ese Riverton, WY
51 mph
Aug 24, 2026
10:53 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: ASOS station KRIW Riverton Airport (ASOS).
NWS Wind Report Location: 5 Nw Riverton, WY
55 mph
Aug 24, 2026
12:50 AM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: Mesonet station PC633 Poston Ranch Rd (PC). Wind gust due to an outflow boundary.
NWS Wind Report Location: 19 Ese Riverton, WY
58 mph
Aug 24, 2026
12:34 AM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: ASOS station KRIW Riverton Airport (ASOS). Winds were generated in the wake of an outflow boundary.
NWS Wind Report Location: 5 Nw Riverton, WY
61 mph
Jul 7, 2026
11:01 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: ASOS station KRIW Riverton Airport (ASOS).
NWS Wind Report Location: 5 NW Riverton, WY
71 mph
Jun 27, 2026
10:11 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: ASOS station KRIW Riverton Airport (ASOS).
NWS Wind Report Location: 5 NW Riverton, WY
62 mph
Jun 21, 2026
9:11 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: ASOS station KRIW Riverton Airport (ASOS).
NWS Wind Report Location: 5 NW Riverton, WY
67 mph
Jun 20, 2026
8:50 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: Mesonet station PC633 Poston Ranch Rd (PC).
NWS Wind Report Location: 19 ESE Riverton, WY
67 mph
Jun 20, 2026
8:14 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: ASOS station KRIW Riverton Airport (ASOS).
NWS Wind Report Location: 5 NW Riverton, WY
68 mph
Aug 15, 2025
10:00 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: ASOS station KRIW Riverton Airport Station Elevation: 5509 ft.
NWS Wind Report Location: 5 NW Riverton, WY
63 mph
Aug 1, 2025
8:08 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: ASOS station KRIW Riverton Airport. Downdraft from weak convection.
NWS Wind Report Location: 5 NW Riverton, WY
58 mph
Jul 4, 2025
9:40 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: At NWS Riverton WFO... measured gust from onsite weather station.
NWS Wind Report Location: 6 WNW Riverton, WY
68 mph
Sep 15, 2024
11:29 PM UTC
Wind report for Riverton, WY
Fremont County · 12,397 Homes in County
Wind Report Description: Handheld anemometer recorded 69 mph and 68 mph was measured by anemometer attached to vehicle.
NWS Wind Report Location: 7 W Riverton, WY
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 and near Riverton, WY

4 reports
EF0 category
May 6, 2014
1:05 PM MST-7
Tornado report for Riverton, WY
Fremont County · 12,397 Homes in County
Tornado Report Description: A trained spotter sighted a weak tornado north of Missouri Valley Road. The tornado remained over open country and caused no damage.
NWS Tornado Report Location: 6.88 E Midvale, WY
F1 category
Jun 6, 1968
3:30 PM CST
Tornado report for Riverton, WY
Fremont County · 12,397 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, WY
F1 category
Jun 5, 1968
1:00 PM CST
Tornado report for Riverton, WY
Fremont County · 12,397 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, WY
F2 category
Jun 6, 1967
2:30 PM CST
Tornado report for Riverton, WY
Fremont County · 12,397 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, WY
Showing 4 of 4
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 Riverton, WY on the Interactive Map

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Browse ZIP Codes with NWS Storm Reports in Riverton

82501 144
Arapahoe, WY Hail, wind & tornado reports

NWS Storm Reports & Census Data

U.S. Census Data · City

Riverton, WY area census snapshot

People & households
Population10,803
Households4,112
Housing units4,564
Income
Median household income$56,280
$100k+ households33.6%
$150k+ households10.5%
Housing stock
Single-family detached2,966
Attached single-family279
Small multifamily463
Large multifamily379
Mobile homes477
Housing mix
Single-family share65.0%
Attached-home share6.1%
Multifamily share18.5%
Mobile-home share10.5%
Ownership & occupancy
Owner-occupied2,369
Renter-occupied1,743
Vacant units452
Home value & age
Median home value$204,900
Owner homes $300k+16.4%
Owner homes $500k+1.4%
Owner homes $750k+--
Median year built1975
Older-home share62.3%
Vehicle context
Households with cars3,789
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 Riverton have on record?

Our records show 43 hail, 84 wind, and 4 tornado reports in and near Riverton, WY, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on August 25, 2026.

What is the largest hail ever reported in Riverton?

The largest hail size in these storm-report records in and near Riverton, WY is 2.00″. It was reported near Riverton, WY on June 23, 2023.

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

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

I am selling a home in Riverton — 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 Riverton address?

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