Typical operating window
February–MayNorth Pacific storms establish deep winter cover; longer spring daylight expands the practical operating window.Verified planning context
Snow, weather and avalanche context
Historical patterns help you compare trips. They do not predict your week or replace the operator's daily decisions.
Strongest comparable snow evidence
365 mm SWE median · 342–399 mm interquartile rangeKamchatka reference ERA5-Land grid cellTier C · modelled estimate · low confidenceSnow character
maritimeMaritime accumulation, wind slabs, volcanic terrain, and spring warming create strong elevation and aspect contrasts.Public avalanche information
Roshydromet forecasts and warningsNo verified public regional avalanche bulletin was identified for the heli-ski terrain.Weather and flight context
Frequent Pacific systems meet volcanic relief in a remote, observation-sparse region.
- Coastal cloud and fog
- Strong wind
- Remote logistics and volcanic hazards
Meteorological reference area
Kamchatka catalogue region
- Includes
- Named Kamchatka program areas and stations.
- Excludes
- A peninsula-wide mountain snowfall value without calibration.
- Elevation
- No verified operator-terrain elevation band is public. Each evidence value retains its site elevation.
Evidence pack
Measurements, claims and gaps stay separate.
Tier CModelled snowfall water equivalent365 mm SWE median · 342–399 mm interquartile range
- Site
- Kamchatka reference ERA5-Land grid cell · 56.1000, 159.5000 · 4.1 km from Kamchatka reference reference point
- Period
- Calendar years 1991–2020
- Completeness
- 360 monthly means; all 30 calendar years contain 12 values.
- Method
- ERA5-Land monthly mean daily snowfall accumulation was multiplied by calendar days and 1,000, then summed by calendar year.
- Limitation
- This reference area supports evidence discovery and comparison. It is not an operating-area or tenure boundary. This unadjusted 0.1° reanalysis grid cell is not an observation, snow depth, or terrain-wide total. Grid elevation and wind redistribution can cause substantial local bias.
- ERA5-Land monthly averaged data from 1950 to presentCopernicus Climate Change Service · accessed 2026-08-26
Monthly evidence
Each cell keeps its measurement type and unit. Reanalysis water equivalent is not snow depth. Text-only cells preserve a representative data gap.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 47.3 mm SWE | 38.4 mm SWE | 48.3 mm SWE | 41.8 mm SWE | 23.8 mm SWE | 0.7 mm SWE | 0 mm SWE | 0 mm SWE | 3.5 mm SWE | 43.6 mm SWE | 57.9 mm SWE | 41.5 mm SWE |
Commercial operator assessment
Operator assessment process not independently verifiedThe operator must assess current snow, avalanche terrain, weather, aircraft limits, and rescue options. No private operational plan is inferred.
Sources and evidence notes
- WMO Climatological NormalsWorld Meteorological Organization · accessed 2026-08-25
- ERA5-Land hourly data from 1950 to presentCopernicus Climate Change Service · accessed 2026-08-25
- Hydrometeorological Centre of RussiaRoshydromet · accessed 2026-08-25
- Published operator and trip inventoryHeliski International editorial team · accessed 2026-08-25
- ERA5-Land monthly averaged data from 1950 to presentCopernicus Climate Change Service · accessed 2026-08-26