Mysterious Valley Airport Private

20CL · Pope Valley, CA · 1,410 ft elevation · var 16E · Non-towered

Overview Weather Runways Comms & NavAids Charts Services & info

Airport information

FAA LID: 20CL
Coordinates: 38.7493, -122.3670
Elevation: 1,410 ft MSL
Magnetic variation: 16E
Sectional chart: SAN FRANCISCO
Airport use: Private
Control tower: No
ARTCC: OAKLAND (ZOA)
Flight service (FSS): OAKLAND
Attendance: IREG
Segmented circle: No
Wind indicator: yes
Activated: 1971/05
Distance from city: 9 N

Weather

METAR observed

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TAF forecast

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Sun & FAA night 2026-06-21

Event	Local (PDT)	UTC
Morning civil twilight Loggable night ends	05:13 AM	12:13Z
Sunrise	05:45 AM	12:45Z
Sunset	08:38 PM	03:38Z
Evening civil twilight Loggable night begins	09:10 PM	04:10Z

Loggable night (§1.1)

09:10 PM → 05:13 AM

Night currency (§61.57)

09:38 PM → 04:45 AM

Plan a flight from 20CL

Destination (ICAO)

TAS (kt)Burn (gph)Reserve (hr)Wind from (°)Wind (kt)

Traffic pattern

Landing runway

LEFT traffic

Landing: Rwy 14
Pattern: left (turns left)
TPA: 2,400 ft MSL (≈1,000 AGL)

Enter the left downwind for Rwy 14 at 2,400 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).

Runway 14/32

3,500 ft × 30 ft · Gravel

Heading: n/a
Traffic pattern: Left

Heading: n/a
Traffic pattern: Left

Will it fit? Your aircraft's required runway length (from the POH) — checked against every runway here

ft · ≥1.5× comfortable, under 1.25× tight · saved across airports

Runway	Length	Your margin
14/32	3,500 ft

Nearby navigation aids

NavAid	Type	Freq	Radial / Dist magnetic
ILA · Williams	VORTAC	114.40	r202° / 25 NM
STS · Santa Rosa	VOR-DME	113.00	r039° / 25.4 NM
SGD · Scaggs Island	VORTAC	112.10	r343° / 34.2 NM
MXW · Maxwell	VORTAC	110.00	r173° / 34.8 NM
TZZ · Travis	VOR	116.40	r296° / 35.7 NM
SUU · Travis	TACAN	116.60	r310° / 36.2 NM

VFR sectional

Open 20CL on the VFR sectional (SkyVector) ↗

No published instrument procedures or Chart Supplement for 20CL. VFR sectional link above.

Services

Airframe service: NONE
Powerplant service: NONE

Ownership & management

Owner

PERRY CLARK

AMIZETTA WINERY 1099 GREENFIELD RD, ST HELENA, CA

Manager

Remarks FAA

FORM 7480-1 SUBMITTED FOR RECORDS.
HAZARDOUS STRIP-SURROUNDED BY HILLS, 95 FT FENCE TO FENCE.
FOR CD CTC OAKLAND ARTCC AT 510-745-3380.

Nearby airports

05CL · Pope Valley AirportPrivate (8 NM)2O3 · Angwin Airport-Parrett Field (11 NM)63CL · G3 Ranch AirportPrivate (11 NM)CA39 · Belos Cavalos AirportPrivate (21 NM)CA57 · Blake Sky Park AirportPrivate (23 NM)O41 · Watts Woodland Airport (24 NM)

Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 20CL in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.

About 20CL

Mysterious Valley Airport (20CL) is an airport in Pope Valley, CA, at 1,410 ft MSL. It has 1 runway, the longest 3,500 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 20CL, refreshed from the Aviation Weather Center and FAA NASR.

Does 20CL have a control tower?

No. Mysterious Valley Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.

What is the longest runway at 20CL?

Mysterious Valley Airport has 1 runway; the longest is 3,500 ft. See the Runways tab for headings, surface, and lighting.

Where is 20CL?

Mysterious Valley Airport is in Pope Valley, CA, at an elevation of 1,410 ft MSL. Coordinates: 38.7493, -122.3670.

Fly out of 20CL often?

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