Mysterious Valley Private
20CL · Pope Valley, CA · Non-towered · Print kneeboard · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-21 · night begins 07:35 PM
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:30 AM | 13:30Z |
| Sunrise | 06:56 AM | 13:56Z |
| Sunset | 07:08 PM | 02:08Z |
| Evening civil twilight Loggable night begins | 07:35 PM | 02:35Z |
Plan a flight from 20CL
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
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Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
RWY 14LEFT traffic
- Heading
- 140° mag · 156° true
- Dimensions
- 3,500 × 30 ft
- TPA
- 2,400 ft MSL (≈1,000 AGL) · standard
- Surface
- Gravel
Enter the left downwind (heading 320°) on the 45° at 2,400 ft MSL (≈1,000 AGL).
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: schematic (headings + lengths)
| Runway | Length | Your margin |
|---|---|---|
| 14/32 | 3,500 ft |
Prefer one flat page? Full runway details for 20CL → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 20CL kneeboard →
Comms & NavAids
Nearby navigation aids
ILA 114.40 · SGD 112.10 · SUU 116.60
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| ILA · Williams | VORTAC | 114.40 · 91X | Low | r202° / 25 NM |
| SGD · Scaggs Island | VORTAC | 112.10 · 58X | Low | r343° / 34.2 NM |
| SUU · Travis | TACAN | 116.60 · 113X | — | r314° / 36.2 NM |
Charts & procedures
No published instrument procedures or Chart Supplement for 20CL — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- 20CL
- Coordinates
- 38.7493, -122.3675
- 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 · 1-800-WX-BRIEF
- Attendance
- IREG
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1971/05
- Distance from city
- 9 N
Services fuel · repairs · oxygen · attendance
- Airframe service
- NONE
- Powerplant service
- NONE
Ownership & management 2 contacts
Remarks FAA · 2 notes
General
- HAZARDOUS STRIP-SURROUNDED BY HILLS, 95 FT FENCE TO FENCE.
- FOR CD CTC OAKLAND ARTCC AT 510-745-3380.
Nearby airports
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Also nearby: 05CL Pope Valley (private) (8 NM) · 2O3 Angwin-Parrett Field (11 NM) · 63CL G3 Ranch (private) (11 NM) · CA34 Ala Doble (private) (17 NM) · CA39 Belos Cavalos (private) (21 NM) · 55CL Strain Ranch (private) (22 NM)
About 20CL
Mysterious Valley (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 is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 20CL?
Mysterious Valley has 1 runway; the longest is 3,500 ft. See the Runways section for headings, surface, and lighting.
Where is 20CL?
Mysterious Valley is in Pope Valley, CA, at an elevation of 1,410 ft MSL. Coordinates: 38.7493, -122.3675.
More about 20CL
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.
Something here wrong or out of date? Report a data problem.