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

▼ 25.0%

DEP / DAY

▼ 57.1%

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 1 arrivals and 0 departures per day on average over the last 7 days.

Safety incidents

Last 7 days · 0 total

NORMAL

Current weather

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

25m ago

Temp

86°F

Wind

6 kts

180°

Visib

10+ km

Ceil

—

KMYV 170253Z AUTO 18006KT 10SM CLR 30/12 A2993 RMK AO2 SLP137 T03000117 56008

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

60% of ops

73 land · 1 TO

40% of ops

48 land · 21 TO

Runway 01 carries 60% of operations (73 landings, 1 takeoffs) over the last 30 days. The next most-used is 19 at 40%.

Approach quality

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

01 73 landings

UA 18%

19 48 landings

UA 48%

Approaches to 01 show a 18% unstable-approach rate (13 UA events from 73 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

2.7

flights/day · 81 total

Busy hour (local)

5pm

also 6pm · 12am

Day vs night

49%

06:00–20:00 local

Traffic concentrates around 12am–5pm local, averaging 2.7 flights/day. Weekend volume runs 1.1× weekday (3.0 vs 2.7 daily).

Aircraft character

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

12 · 18%

5 · 7%

4 · 6%

Activity is led by (18% of 67 flights). Top three types: , , .

Communications Frequencies

2026-06-11

Airport operations

ARTCC:: ZOA
Mag var:: 16° E

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