WxDecoder

70CO Weather Greystone Heliport

Evergreen, ColoradoElevation 7,540 ftHeliport
OFF-FIELD REFERENCE
Nearest report: KBJC · 21 NM NE · 14 min old
Ceiling 2,700 ft, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KBJC
WIND
340@7
steady
VISIBILITY
10 SM
16.1 km
CEILING
2,700 ft
lowest BKN/OVC
FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No aviation METAR is published for this airport. The nearest National Weather Service station reports wind from 340° at 9 kt, visibility 10 SM, temperature 9C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight chance rain showers, low near 35F, 50% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

DayConditionsTemp FWindGustsPrecipPilot note
Tonight Chance Rain Showers 35 SSE 2 kt – 50%
Monday Mostly Sunny 54/33 SSE 4 kt – 10%
Tuesday Sunny 63/31 WSW 6 kt – 0%
Wednesday Sunny 63/31 SSW 5 kt – 0%
Thursday Mostly Sunny 60/34 SSE 5 kt – 1%
Friday Partly Sunny 59/34 SE 5 kt – 20%
Saturday Mostly Sunny then Chance Rain Showers 54/32 NNW 4 kt – 25%
Sunday Slight Chance Rain Showers then Chance Rain And Snow Showers 54 SSW 4 kt – 53%

Source: National Weather Service (office BOU). Forecast issued 0248Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
Crosswind calculator
No runway layout is available for 70CO. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail

H1
Dimensions
30 x 30 ft
Surface
CONC
Lighting
Lighted
FIELD CONDITIONS

Field elevation

Field elevation
7,540 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0008Z 6:08 PM
Sunrise
1323Z 7:23 AM
Loggable night
0036Z (6:36 PM local) → 1255Z (6:55 AM local)
end of evening to start of morning civil twilight
Position lights required
0008Z (6:08 PM local) → 1323Z (7:23 AM local)
sunset to sunrise (91.209)
Night passenger currency
0108Z (7:08 PM local) → 1223Z (6:23 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Greystone Heliport is in Evergreen, Colorado. Field elevation 7,540 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
TypeHeliport
CHARTS & AIRSPACE
ICAO / IATA70CO
RegionColorado
CountryUnited States
Coordinates39.6408, -105.3960
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

70CO traffic patterns

2026-07-27 to 2026-08-02, 2 days observed · data 2026-10-23

Insufficient confidence
TRAFFIC VOLUME (30-DAY)
AVG LANDINGS/DAY
0.5
AVG OPS/DAY
1.5
Activity trend over 2 days: rising, from 1 to 2 operations per dayOperations trend (2 days)

Busiest day: Sun · Busiest month: Aug

FLEET MIX
Helicopter 100%

Mostly rotorcraft.

TOP AIRCRAFT TYPES
›B06 (Helicopter) · ~1 landings/mo
›GL7T (Jet) · ~0 landings/mo
Data limitations (4)
›ADS-B coverage is incomplete; counts are an observed lower bound, not official totals.
›Some aircraft do not transmit usable ADS-B and are not counted.
›Aircraft types and based estimates are inferred and may be wrong.
›This is not official ATC, FAA, or airport data.
NEARBY AIRPORTS

Weather reference stations

70CO has no on-field report. Nearest reporting station: KBJC (21 NM NE, MVFR).

KBJC Rocky Mountain Metropolitan Airport
21 NM NE
MVFR
KBDU Boulder Municipal Airport
25 NM N
MVFR
KAPA Centennial Airport
26 NM E
MVFR
KBKF Buckley Space Force Base
30 NM E
MVFR
KDEN Denver International Airport
36 NM E
IFR
KCFO Colorado Air and Space Port
41 NM E
IFR
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗70CO on OurAirports
FREQUENTLY ASKED
Does 70CO have a METAR?
No on-field METAR is issued for 70CO. This page uses the nearest reporting station as a reference.
Does 70CO have a TAF?
No TAF is issued directly for 70CO. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 70CO?
70CO sits at 7,540 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 70CO?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.