Mammoth, WY Live Doppler Radar
Live radar for Mammoth, Park County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Mammoth?
Since 1996, the National Weather Service has logged heavy snow or a winter storm on 138 days in the Yellowstone National Park forecast zone and Park County — the most common reported hazard around Mammoth, mostly in January and February. Next come damaging thunderstorm winds (34 days) and wildfires (25 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Heavy snow & winter storms | 138 | Apr 2026 | Oct 15, 1998 · $1.0 million damage |
| Damaging thunderstorm winds | 34 | Jun 2026 | Jul 3, 2023 · $200,000 damage |
| Wildfires | 25 | Oct 2020 | — |
| Flash flooding | 14 | Aug 2022 | Jul 10, 2001 · $400,000 damage |
| Extreme cold & wind chill | 12 | Jan 2023 | — |
| Flooding | 9 | Jun 2022 | Jun 12, 2022 · $25 million damage |
| Lightning casualties & damage | 6 | Jul 2019 | Jun 20, 2010 · 1 death |
| Excessive heat | 4 | Mar 2026 | — |
Source: NOAA NCEI Storm Events Database, 1996–2026 (the latest year is partial). A "day" is a date with at least one report in the Yellowstone National Park forecast zone and Park County; damage is as reported, not adjusted for inflation.
How much snow does Mammoth get?
A normal year brings about 72 inches of snow to Mammoth, based on NOAA's 1991–2020 climate normals for the Yellowstone Park Mammoth weather station in town. The snowiest month is usually December (12.6 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 4.7 | 9.9 | 12.6 | 11.5 | 11.5 | 10.9 | 7.8 | 1.7 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover Mammoth?
The closest NEXRAD Doppler radar is KBLX (Billings, MT), about 118 miles east-northeast. Radar beams climb as they travel, so the height of the lowest scan over town decides how low in a storm the radar can see.
| Radar | Distance | Lowest beam over Mammoth | View |
|---|---|---|---|
| KBLX Billings, MT | 118 mi east-northeast | 12,400 ft | Limited — the beam overshoots the lowest part of storms |
| KSFX Pocatello, ID | 163 mi southwest | 20,700 ft | Limited — the beam overshoots the lowest part of storms |
| KRIW Riverton, WY | 172 mi southeast | 22,700 ft | Limited — the beam overshoots the lowest part of storms |
Beam height is the center of the 0.5° scan above the radar, with standard refraction. Mountains near a radar can block it further.
Tornado & hail history near Mammoth
NOAA has no tornado on record within 25 miles of Mammoth since 1950.
Hail: 3 reports of 1-inch or larger hail within 25 miles since 1955; the largest was 1.00-inch hail on June 1, 2025.
Source: NOAA Storm Prediction Center — tornadoes 1950–2025, hail 1955–2025. Distances are to each tornado's track; ratings before February 2007 use the original Fujita scale.
On TALON you get Mammoth's live radar loop, rain/snow/ice colors, flash-flood risk, storm tracks with arrival times and NWS warnings free; close-up radar and rotation detection are part of TALON Pro.
Mammoth radar FAQ
Where is the nearest weather radar to Mammoth, WY?
KBLX (Billings, MT), about 118 miles east-northeast. KSFX (Pocatello, ID) is 163 miles away and also covers the area.
Does radar show snow in Mammoth?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Mammoth the lowest scan from KBLX is about 12,400 ft up, so light snow from shallow clouds can be under-shown — check NWS winter alerts too.
Is TALON's radar for Mammoth free?
Yes — the US radar loop, rain/snow/ice colors, flash-flood risk, storm tracks and NWS warnings are free in any browser. Close-up radar, rotation detection and longer forecasts are part of TALON Pro.
Should I rely on radar for my safety?
No app replaces official warnings. When the National Weather Service issues a warning for Mammoth, follow it right away — see watch vs. warning.