Airports / 09CL / Alta Sierra AirportGood ground coverage

📍 Grass Valley⬆ 2,275 ft1 runways

09CL ·

Alta Sierra Airport

39.11380°N

-121.05700°W

ARR / DAY

▼ 50.0%

DEP / DAY

▲ 100.0%

Alta Sierra Airport (09CL) is a small general aviation airport located in Grass Valley, CA, 28 mi north east of Roseville. It features 1 runway measuring 3,000 feet. SkyMeter has observed roughly 2 arrivals and 2 departures per day on average over the last 1 days.

Safety incidents

Last 1 days · 0 total

NORMAL

Current weather

From KMYV, 28 mi away (09CL does not publish METAR)

just now

Temp

77°F

Wind

4 kts

0°

Visib

10+ km

Ceil

—

METAR KMYV 281953Z AUTO VRB04KT 10SM CLR 25/09 A2988 RMK AO2 SLP123 T02500094

Runways

1 installed

3,000 FT MAX

01/19

3,000 ft × 50

ASPH-F○ unlit

Runway intelligence

Which runway carries the operations, observed over the last 30 days

77% of ops

27 land · 0 TO

23% of ops

8 land · 16 TO

Runway 01 carries 77% of operations (27 landings, 0 takeoffs) over the last 30 days. The next most-used is 19 at 23%.

Approach quality

Per-runway unstable-approach, go-around, and long-rollout rates

01 27 landings

UA 33%

19 8 landings

UA 25%

Approaches to 01 show a 33% unstable-approach rate (9 UA events from 27 landings).Phase B will add wind-correlation: which crosswind band produces most UA events.

Traffic behavior

When the field is busy: hourly + weekday vs weekend

Daily avg

1.7

flights/day · 52 total

Busy hour (local)

12am

also 5pm · 10pm

Day vs night

42%

06:00–20:00 local

Traffic concentrates around 12am–10pm local, averaging 1.7 flights/day. Weekend volume runs 1.9× weekday (2.8 vs 1.4 daily).

Aircraft character

What's actually flying here: top types over the last 30 days

Activity is led by (25% of 52 flights). Top three types: , , .

Communications Frequencies

2026-06-11

Airport operations

ARTCC:: ZOA
Mag var:: 16° E

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