Wind events in Lewis and Clark County, Montana The wind events on record, by date and by year
This page is a county record of past events and claims. It does not show the flood zone or the risk of an address. For the flood map of an address, use FEMA's address search (opens in a new tab).
NCEI has 114 wind events on record for Lewis and Clark County, Montana, from 1955 through 30 Jun 2026.
The newest wind event on record is on 14 Sep 2025.
From 2016 through 2025, NCEI has 46 wind events on record for the county.
The NWS collects event reports from a variety of sources, which include (but are not limited to): county, state, and federal emergency management officials, local law enforcement officials, SKYWARN spotters, NWS damage surveys, newspaper clipping services, the insurance industry, and the general public, among others.
The National Weather Service reports property and crop damage estimates using available data at the time of event reporting. These values should therefore be considered broad estimates. Damage amounts are not adjusted for inflation.
Zone (NWS Forecast Zone): A zone is a geographic area defined by the NWS for issuing forecasts, watches, and warnings. While zones often align with counties, they can also represent smaller or subdivided areas within a county to account for differences in weather conditions, such as elevation or proximity to water. Larger-scale events—such as heat, cold, drought, and winter storms—are typically recorded by zone.
The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on .
Date of the data: NCEI storm events through . Event types on this page: Thunderstorm Wind, High Wind, Strong Wind.
Newest wind events on record
Thunderstorm Wind59 mph (51 knots, measured gust)
16 miles SE of AUGUSTA ARPT
Thunderstorm Wind58 mph (50 knots, estimated gust)
3 miles SE of IRON. Damage estimate: $1 thousand
Thunderstorm Wind60 mph (52 knots, measured gust)
At (HLN)HELENA RGNL ARP
Thunderstorm Wind59 mph (51 knots, measured gust)
16 miles SE of AUGUSTA ARPT
Thunderstorm Wind61 mph (53 knots, measured gust)
16 miles SE of AUGUSTA ARPT
Thunderstorm Wind61 mph (53 knots, measured gust)
At (HLN)HELENA RGNL ARP
Thunderstorm Wind62 mph (54 knots, measured gust)
At (HLN)HELENA RGNL ARP
Thunderstorm Wind63 mph (55 knots, measured gust)
2 miles ENE of (HLN)HELENA RGNL ARP
Thunderstorm Wind61 mph (53 knots, measured gust)
16 miles SE of AUGUSTA ARPT
Thunderstorm Wind61 mph (53 knots, estimated gust)
2 miles NNE of HOLTER DAM
Thunderstorm Wind59 mph (51 knots, measured gust)
4 miles SE of SIEBEN
Thunderstorm Wind58 mph (50 knots, estimated gust)
4 miles N of IRON
Thunderstorm Wind62 mph (54 knots, measured gust)
At BROADWATER
Thunderstorm Wind62 mph (54 knots, measured gust)
1 mile SSE of SILVER CITY
Thunderstorm Wind59 mph (51 knots, measured gust)
At (HLN)HELENA RGNL ARP
Thunderstorm Wind59 mph (51 knots, measured gust)
At (HLN)HELENA RGNL ARP
Thunderstorm Wind67 mph (58 knots, measured gust)
16 miles SE of AUGUSTA ARPT
Thunderstorm Wind58 mph (50 knots, measured gust)
16 miles SE of AUGUSTA ARPT
Thunderstorm Wind60 mph (52 knots, measured gust)
At (HLN)HELENA RGNL ARP
Thunderstorm Wind59 mph (51 knots, measured gust)
16 miles SE of AUGUSTA ARPT
Thunderstorm Wind58 mph (50 knots, measured gust)
8 miles ENE of IRON
Thunderstorm Wind58 mph (50 knots, measured gust)
4 miles NE of (HLN)HELENA RGNL ARP
Thunderstorm Wind61 mph (53 knots, measured gust)
At (HLN)HELENA RGNL ARP
Thunderstorm Wind61 mph (53 knots, measured gust)
16 miles SE of AUGUSTA ARPT
Thunderstorm Wind62 mph (54 knots, measured gust)
6 miles SW of AUSTIN
A place is the text of the NCEI record: a distance and a direction from a reference place. The site does not show a place text that names a private property or reads as a person. Wind speed is in miles per hour, with the knots that NCEI gives.
Wind events by year
| Decade | Year that ends in 0 | Year that ends in 1 | Year that ends in 2 | Year that ends in 3 | Year that ends in 4 | Year that ends in 5 | Year that ends in 6 | Year that ends in 7 | Year that ends in 8 | Year that ends in 9 | All |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1950s | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1960s | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1970s | 0 | 0 | 0 | 0 | 1 | 4 | 0 | 0 | 0 | 0 | 5 |
| 1980s | 0 | 0 | 4 | 0 | 3 | 0 | 0 | 0 | 1 | 6 | 14 |
| 1990s | 2 | 1 | 2 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 9 |
| 2000s | 2 | 3 | 4 | 6 | 1 | 2 | 4 | 4 | 9 | 1 | 36 |
| 2010s | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 9 | 1 | 2 | 17 |
| 2020s | 3 | 0 | 11 | 3 | 9 | 7 | 0 (part of the year) | 33 |
A darker cell has a larger count. The number is in each cell.
Thunderstorm wind events are on record from 1955. High wind and strong wind events are on record from 1996. The year 2026 has the events through 30 Jun 2026 only.
By month, all years
- Jan1 event
- Feb0 events
- Mar0 events
- Apr0 events
- May19 events
- Jun24 events
- Jul35 events
- Aug26 events
- Sep9 events
- Oct0 events
- Nov0 events
- Dec0 events
Magnitudes on record
| Wind speed | Level | Events |
|---|---|---|
| under 58 mph | below severe threshold | 33 |
| 58 to 73 mph | severe | 77 |
| 74 to 95 mph | hurricane-force | 4 |
| 96 mph and over | extreme | 0 |
Magnitude for wind speeds (e.g., 81 kts, where 1 kt = 1.152 mph) can be estimated by damage caused or measured by official NWS-approved calibrated anemometers. Common measurement types include Measured Gust (MG), Measured Sustained (MS), Estimated Gust (EG), or Estimated Sustained (ES).
The table has the events with a speed in the record. NCEI gives the speed in knots; 1 knot is 1.151 miles per hour.
Beside the other counties
| Measure | Lewis and Clark | All counties of Montana | All counties of the United States |
|---|---|---|---|
| Wind events, 1955 to 2026 | 114 | 9,507 | 637,939 |
| Events for each 100 square miles | 3.3 | 6.5 | 18.1 |
| Events for each 10,000 residents | 15.8 | 86.1 | 19.2 |
The columns for the state and the United States total the counties. They count the events of each county in the same way as the county column. A forecast zone with another name than a county counts for the state only.
More wind events on record
| Date | Event type | Magnitude | Damage estimate | Deaths | Injuries | On record for |
|---|---|---|---|---|---|---|
| Thunderstorm Wind | 63 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 62 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 64 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 70 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 64 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 59 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 66 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 63 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 70 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 69 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 61 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 87 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 61 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 64 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 61 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 61 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 59 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 64 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 70 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 62 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 69 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 67 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 69 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 70 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 70 mph | $10 thousand | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 61 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 64 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 59 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 64 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 81 mph | $10 thousand | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 72 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 0 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 81 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 0 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 66 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 0 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 62 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 0 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 63 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 0 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 67 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 74 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 70 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 69 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 58 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 0 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 0 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 0 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 60 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 81 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 64 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 69 mph | none | 0 | 0 | County | |
| Thunderstorm Wind | 0 mph | none | 0 | 0 | County |
The table has all other events on record. A damage figure is an estimate in the NCEI record.
Official channels
- NCEI Storm Events Database (opens in a new tab)Search the full NCEI record by state, county and date.
- National Weather Service: Great Falls, MT (opens in a new tab)The forecast office that issues the weather warnings for the county.
- FEMA Flood Map Service Center: Search By Address (opens in a new tab)Search an address to see its flood map. This site has no flood-zone data.
These links open the pages of the agencies. The site checked the links on .
Cite this page
County Hazards. "Wind events on record for Lewis and Clark County, Montana". https://countyhazards.com/county/mt/lewis-and-clark/wind/. Data: NOAA NCEI Storm Events Database through 30 Jun 2026. Page made on .
Questions
- Which month has the most wind events on record for Lewis and Clark County?
- July has 35 of the 114 wind events on record from 1955 through 30 Jun 2026.
- How many wind events are on record for Montana?
- NCEI has 14,438 wind events on record for Montana from 1955 through 30 Jun 2026. That count has every forecast zone of the state.
- How does Lewis and Clark County compare with the other counties of Montana?
- The counties of Montana have 6.5 wind events for each 100 square miles. Lewis and Clark County has 3.3.
- How fast is the wind on record for Lewis and Clark County?
- 81 wind events have a speed of 58 mph or more. 4 events have a speed of 74 mph or more.