Sierraville Dearwater Airport (KO79) Area Aviation Weather & Runway Winds
As of 5:55 AM PDT, Oct 28, based on the nearest station (KTRK), KO79 is currently MVFR with calm winds, visibility 5 statute miles, and no ceiling reported.
Aviation weather near Sierraville Dearwater Airport in Sierraville, CA, decoded from the nearest reporting station (KTRK): conditions and runway crosswinds.
Sierraville Dearwater Airport (KO79) is a general aviation airport serving pilots in and around Sierraville, CA at a field elevation of 4,990 ft. KO79 has no weather station of its own. Conditions here are decoded from KTRK, about 19 nm away, the nearest reporting station, and local conditions can differ. It has one runway (03/21), the longest 3,093 ft. CTAF is 122.9.
No weather station at this airport: showing the nearest station KTRK, 18.6 nm away.
Wind calm, visibility 5 statute miles, no cloud data, temperature -6°C (21°F), altimeter 30.09 inHg. Conditions are Marginal VFR (MVFR).
METAR KTRK 281255Z AUTO 00000KT 5SM BR CLR M06/M07 A3009 RMK AO2
What changed at KTRK (nearest station)?
Since the 1235Z (5:35 AM PDT) report, compared automatically against the latest METAR.
- Flight category dropped from VFR to MVFR.
- Visibility dropped from 10 SM to 5 SM.
- Mist began (BR).
Current pilot readout for KO79
Based on the nearest station (KTRK), KO79 is currently MVFR with calm winds, visibility 5 statute miles, and no ceiling reported. Density altitude is approximately 3,450 ft (field elevation 4,990 ft). Review the latest TAF below for forecast changes before departure.
New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →
Runway wind check
Estimated head/tailwind and crosswind for each runway end from the current reported wind.
Current wind is calm: calm wind is not a factor for runway selection, and with no wind there is no head/tail or crosswind component to compute. Live numbers return automatically once a report includes a wind direction.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| 03 | 3,093 ft | ASP | - | - |
| 21 | 3,093 ft | ASP | - | - |
Open the crosswind calculator to try your own wind and runway numbers →
KO79 runways
1 physical runway · 2 runway ends. Each card opens the runway's intelligence page: equipment and lighting, LAHSO, frequencies, today's configuration, predicted use, history and approaches.
- Status not monitoredRunway 03/213,093 × 50 ft · ASPCurrent useno stated-runway source at KO79Wind
- 03
- no steady wind
- 21
- no steady wind
no active equipment NOTAM receivedView Runway Intelligence →
“Current use” is what the facilitystates; wind components are arithmetic on the current METAR against TRUE headings; status reflects NOTAMs received through SWIM, the tower's TFDM record and the D-ATIS — a runway reads “Open” only with a complete NOTAM picture.
24-hour trend
Wind, ceiling and flight category over the last 24 hours.
Over the last 24 h: wind 3→0 kt, ceiling unlimited → unlimited.
KO79 weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast. Drag to pan, tap ⚡ to toggle lightning.
Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © Stadia Maps © OpenMapTiles © OpenStreetMap
NOAA NEXRAD composite and lightning, updated about every five minutes; amber frames are HRRR model guidance, not observed radar. Not for navigation.
Recent aviation weather trends at KO79
From ATIS Alerts' hourly weather history.
Over the past 24 hours, the nearest station KTRK reported mostly VFR across 46 observations, with 1 flight-category change. The strongest gust reached 20 kt. Wind most often came from the S.
Most recent change: VFR → MVFR
Most recent change: VFR → MVFR
Share of hours each runway had the most headwind. From wind reports, not ATC assignments.
- 21
- 76%
- 03
- 24%
TAF | Terminal Aerodrome Forecast
Issued 1120Z (4:20 AM PDT)
TAF KTRK 281120Z 2812/2912 VRB03KT P6SM SKC FM282000 28007KT P6SM FEW250 FM290100 VRB03KT P6SM BKN250
New to TAFs? How to read one →
Get KO79 weather alerts in Telegram
Stop refreshing aviation weather manually. Track KO79 in ATIS Alerts and get notified when a new METAR changes the picture: a category drop, or wind and ceiling moving toward your minimums.
Track KO79 free on TelegramNo live weather from KO79
Live crosswind meter
KO79 has no weather feed online, so the wind comes from KTRK, 19 nm away.
Wind is calm or variable. Either end works.
Have a weather station at KO79? Help us make your field's weather available to every pilot, free. Add your field's wx station →Asphalt · 3,093 ft. Headings from FAA runway data. Not for navigation.
Field aerial
North up
Runway 03/21 drawn from FAA threshold coordinates.
Imagery: USGS The National Map (public domain). Something off? ✏️ Suggest an edit
Airport info
From the FAA airport record (cycle 2026-10-01) and OurAirports.
Services
- Attended
- Unattended
- Transient parking
- Tie-downs
- Landing fee
- No
- Pattern altitude
- 5,790 ft MSL (800 AGL)
- Control tower
- None
- Wind indicator
- Unlighted
Airport
- Type
- General aviation airport
- FAA LID
- O79
- City
- Sierraville
- State
- California
- Country
- United States
- Elevation
- 4,990 ft
- Coordinates
- 39.5810, -120.3540
- Runways
- 1 physical runway · 2 runway ends
- Longest runway
- 3,093 ft
- Weather reporting
- Nearest station KTRK
- TAF
- Nearest KTRK
- CTAF
- 122.9 MHz
- Time zone
- America/Los_Angeles
- Next sunset
- 11h 54m
Run a flight school, FBO, or club here? Embed KO79's live status on your website, free →
Nearby airports
Compare nearby METAR/TAF stations within 25, 50 and 100 NM before departure or arrival.
Within 25 NM
6 airports25–50 NM
8 airports+2 more within 50 NM
50–100 NM
8 airports+2 more within 100 NM
Customize your O79 shirt or mug
O79's real runway layout on the back, elevation and tower frequency on the front. Add your tail number on the sleeve.
Pilot PIREPs for Sierraville Dearwater Airport (KO79)
Community-submittedCommunity-submitted airport notes from pilots about runway conditions, wildlife, FBOs, fuel, turbulence, ramp access, and local tips.
Read recent community-submitted pilot notes for Sierraville Dearwater Airport, including runway conditions, wildlife activity, FBO/fuel notes, turbulence, ramp access, and local airport tips.
⚠️ Pilot PIREPs on ATIS Alerts are community-submitted airport notes for situational awareness only. They are not official FAA PIREPs, NOTAMs, weather briefings, airport advisories, or flight-planning guidance. Always verify with official FAA/NWS sources, airport management, ATC, and current publications.
No Pilot PIREPs have been submitted for KO79 yet. Recently flew here? Help the next pilot by leaving a quick airport note.
Pilot PIREPs are community pilot notes for situational awareness only, not official FAA PIREPs or advisories. Verify with official sources. Notes are moderated before they appear; helpful marks and reports help us keep them useful.
⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
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