Montana · NOAA storm reports
Hail and storm reports near Great Falls, MT
NOAA records list 32 hail reports within 10 miles of Great Falls since 2016. The biggest reported hail was 2.50 in (tennis ball) on July 7, 2022. They also list 58 thunderstorm wind reports, with the strongest at 72 mph on August 21, 2019.
Preliminary reports from the NOAA Storm Prediction Center, not yet in the official database, add 0 hail reports and 2 wind reports from August 1, 2026 to October 31, 2026.
- Official hail reports since 2016
- 32
- Biggest reported hail
- 2.50 in
- Most recent hail report
- July 31, 2025
- Strongest reported wind
- 72 mph
What these reports can and can’t tell you. Each one is a point observation: hail or wind someone saw or measured at one spot. They are not a full map of where hail fell. A report near you doesn’t mean your roof was damaged, and no report doesn’t mean it wasn’t. Distances are from the center of Great Falls.
Hail reports since November 1, 2021
| Date | Hail size | Distance | County | Reported at | Source |
|---|---|---|---|---|---|
| July 31, 2025 | 1.00 in (quarter) | 1.8 mi | Cascade, MT | Great Falls | NCEI record |
| June 15, 2025 | 1.00 in (quarter) | 2.6 mi | Cascade, MT | Great Falls | NCEI record |
| June 15, 2025 | 1.00 in (quarter) | 1.8 mi | Cascade, MT | Great Falls | NCEI record |
| June 15, 2025 | 1.00 in (quarter) | 2 mi | Cascade, MT | Great Falls | NCEI record |
| June 15, 2025 | 1.00 in (quarter) | 9.8 mi | Cascade, MT | Portage | NCEI record |
| June 15, 2025 | 1.00 in (quarter) | 2.1 mi | Cascade, MT | Great Falls | NCEI record |
| June 15, 2025 | 1.00 in (quarter) | 2 mi | Cascade, MT | Great Falls | NCEI record |
| June 15, 2025 | 1.00 in (quarter) | 1.5 mi | Cascade, MT | Great Falls | NCEI record |
| July 30, 2023 | 1.25 in (half dollar) | 5.2 mi | Cascade, MT | (Gfa)Malmstrom Afb | NCEI record |
| June 5, 2023 | 1.00 in (quarter) | 3.7 mi | Cascade, MT | (Gfa)Malmstrom Afb | NCEI record |
| July 7, 2022 | 2.00 in (hen egg) | 7.7 mi | Cascade, MT | Manchester | NCEI record |
| July 7, 2022 | 1.75 in (golf ball) | 3.4 mi | Cascade, MT | Black Eagle | NCEI record |
| July 7, 2022 | 1.25 in (half dollar) | 2.8 mi | Cascade, MT | Great Falls | NCEI record |
| July 7, 2022 | 1.00 in (quarter) | 2.1 mi | Cascade, MT | Black Eagle | NCEI record |
| July 7, 2022 | 1.75 in (golf ball) | 5.4 mi | Cascade, MT | Black Eagle | NCEI record |
| July 7, 2022 | 2.00 in (hen egg) | 1.9 mi | Cascade, MT | Great Falls | NCEI record |
| July 7, 2022 | 2.50 in (tennis ball) | 2.9 mi | Cascade, MT | Great Falls | NCEI record |
| July 7, 2022 | 1.50 in (ping pong ball) | 2.6 mi | Cascade, MT | Great Falls | NCEI record |
| July 7, 2022 | 0.75 in (penny) | 1.3 mi | Cascade, MT | Great Falls | NCEI record |
Thunderstorm wind reports since November 1, 2021
Show 35 wind reports
| Date | Wind | Distance | County | Reported at | Source |
|---|---|---|---|---|---|
| September 2, 2026 | 83 mph (as reported) | 4.4 mi | Cascade, MT | 5 WSW Great Falls | SPC day reportPreliminary |
| August 27, 2026 | 60 mph (as reported) | 9.5 mi | Cascade, MT | 1 WSW Sun Prairie | SPC day reportPreliminary |
| July 18, 2026 | 58 mph (estimated gust) | 0.7 mi | Cascade, MT | Great Falls | NCEI record |
| July 18, 2026 | 70 mph (measured gust) | 4.4 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| July 18, 2026 | 61 mph (measured gust) | 6.1 mi | Cascade, MT | (Gfa)Malmstrom Afb | NCEI record |
| July 12, 2026 | 64 mph (measured gust) | 4.4 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| May 13, 2026 | 63 mph (measured gust) | 4.4 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| May 13, 2026 | 61 mph (measured gust) | 6.1 mi | Cascade, MT | (Gfa)Malmstrom Afb | NCEI record |
| May 13, 2026 | 69 mph (measured gust) | 4.4 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| December 26, 2025 | 62 mph (measured gust) | 5.1 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| December 26, 2025 | 66 mph (measured gust) | 4.4 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| August 19, 2025 | 66 mph (measured gust) | 4.4 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| August 19, 2025 | 60 mph (measured gust) | 2.1 mi | Cascade, MT | Great Falls | NCEI record |
| August 19, 2025 | 70 mph (measured gust) | 6 mi | Cascade, MT | Rainbow | NCEI record |
| June 27, 2025 | 59 mph (measured gust) | 7.8 mi | Cascade, MT | Great Falls | NCEI record |
| June 15, 2025 | 68 mph (estimated gust) | 7.8 mi | Cascade, MT | Great Falls | NCEI record |
| May 11, 2025 | 58 mph (estimated gust) | 2.1 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| May 11, 2025 | 68 mph (measured gust) | 5.1 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| May 11, 2025 | 63 mph (estimated gust) | 7.8 mi | Cascade, MT | Great Falls | NCEI record |
| May 11, 2025 | 59 mph (estimated gust) | 2.1 mi | Cascade, MT | Great Falls | NCEI record |
| May 11, 2025 | 58 mph (estimated gust) | 6.7 mi | Cascade, MT | Great Falls | NCEI record |
| May 10, 2025 | 63 mph (estimated gust) | 2.1 mi | Cascade, MT | Great Falls | NCEI record |
| May 10, 2025 | 64 mph (estimated gust) | 2.2 mi | Cascade, MT | Great Falls | NCEI record |
| August 23, 2024 | 67 mph (measured gust) | 4.4 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| August 23, 2024 | 59 mph (measured gust) | 6.7 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| August 19, 2024 | 59 mph (measured gust) | 4.4 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| June 21, 2024 | 70 mph (measured gust) | 6.8 mi | Cascade, MT | Great Falls | NCEI record |
| September 7, 2022 | 60 mph (measured gust) | 4.4 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| September 7, 2022 | 60 mph (measured gust) | 3.3 mi | Cascade, MT | Black Eagle | NCEI record |
| August 12, 2022 | 59 mph (measured gust) | 5.4 mi | Cascade, MT | Black Eagle | NCEI record |
| July 8, 2022 | 59 mph (measured gust) | 6.4 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
| May 5, 2022 | 59 mph (measured gust) | 4.7 mi | Cascade, MT | Great Falls | NCEI record |
| May 5, 2022 | 61 mph (measured gust) | 7.1 mi | Cascade, MT | Sandcoulee | NCEI record |
| December 23, 2021 | 60 mph (measured gust) | 6.4 mi | Cascade, MT | Fields | NCEI record |
| December 23, 2021 | 63 mph (measured gust) | 3.6 mi | Cascade, MT | (Gtf)Great Falls Arpt | NCEI record |
Official reports come from the NOAA NCEI Storm Events Database, which currently runs through July 31, 2026. Reports marked preliminary come from the NOAA Storm Prediction Center and are not yet in the official database; they may change or be removed. Dates are the local report date. Data retrieved November 1, 2026. About this data.
What to do after a hail storm
A few calm steps in the first days can protect your home and your claim. Your policy and your state’s rules decide the details, so check your policy and ask your insurer when something is unclear.
For more on insurance claims, deductibles and storm chasers, read our guide to storm and hail damage.
1. Stay safe first
- Wait until the storm has passed before you look around outside.
- Stay off the roof. Look from the ground, or from a window.
- Keep away from downed power lines and report them to local authorities or your utility. Call 911 if anyone is hurt or in danger.
- Stay out of damaged buildings. Wear sturdy shoes and long sleeves around broken glass and debris.
2. Take photos before you clean up
- Take date-stamped photos or video of the roof from the ground.
- Photograph gutters, downspouts, siding, window screens, the fins on your outdoor AC unit, soft metal such as vents and flashing, and any cars.
- If you can do it safely, photograph a few hailstones next to a coin or a ruler.
- Write down the date and time of the storm and what you saw.
3. Prevent more damage
- Cover broken windows or openings to keep rain out, if it is safe.
- Keep every receipt for supplies and temporary repairs.
- Hold off on permanent repairs until you have talked with your insurer.
4. Start an insurance claim
- Read your policy. Note your deductible, and whether it has a separate wind or hail deductible.
- Most insurers have a time limit for reporting a claim. Check your policy for yours.
- Contact your insurer or agent to start a claim. An adjuster may come to inspect.
- Get written estimates, and keep copies of everything you send and receive.
- If you have questions about how a claim is handled, ask your insurer or your state’s insurance department.
5. Watch for storm-chaser scams
- Be careful with door knockers who show up right after a storm.
- Walk away from pressure to sign today, or a discount that only lasts if you sign now.
- Be wary of demands for a large payment up front, or for cash.
- Be wary of offers to cover or waive your deductible. Ask your insurer about it.
- Be wary of out-of-state plates, or no local address you can visit.
- Read any contract before you sign. Don’t sign over your insurance benefits or your insurance check before you understand what you are agreeing to. You don’t have to sign an assignment of benefits to get repairs done.
- Check the contractor’s license or registration where your state requires it. Your state’s licensing board can tell you.
- Get more than one written estimate, and a written contract.
Where this guidance comes from
- National Weather Service: What to Do After Severe Weather. Check your property only after the storm has passed, stay out of damaged buildings, contact local authorities about downed power lines, wear sturdy shoes and long sleeves around damage, and watch for insurance scammers. Retrieved November 1, 2026.
- NAIC: Navigating the Claims Process. Contact your agent or insurer as soon as possible, most insurers have a time limit for reporting a claim, take photos or video, make temporary repairs and keep receipts, an adjuster may inspect, get more than one bid, and do not feel rushed to sign. Retrieved November 1, 2026.
- NAIC: After the Storm, Read the Fine Print to Avoid Signing Away Your Insurance Benefits. Read the fine print before you sign an assignment of benefits. You are not required to sign one to have repairs done. Retrieved November 1, 2026.
- FTC: How To Avoid Scams After Weather Emergencies and Natural Disasters. Warning signs such as pressure to sign right away and demands to pay for everything up front, checking a license with your state or county, getting estimates from more than one contractor, getting a written contract, and never signing your insurance check over to a contractor. Retrieved November 1, 2026.
This is general information, not legal or insurance advice. Check your policy, ask your insurer, and check with your state’s licensing board or insurance department.
Roofers listed in Great Falls
Our directory lists 2 roofing companies in Great Falls. Open a profile to see its phone, website and where each detail came from.
Compare roofing companies in Great Falls, MT
A listing is not an endorsement. We haven’t checked any company’s license, insurance or work. Check current credentials with your state before you hire, and get more than one written estimate.