WxDecoder
KO79

Sierraville Dearwater Airport

Sierraville, CaliforniaElevation 4,984 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KTRK · 19 NM SE · 6 min old
No ceiling, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KTRK
WIND
Calm
no steady wind
VISIBILITY
10 SM
16.1 km
CEILING
None
no BKN/OVC layer
FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No current METAR is available for this airport, so there is no observed aviation report to summarize. Forecast suggests thursday slight chance rain showers then slight chance showers and thunderstorms, high near 85F, low near 56F, 24% chance of precipitation. Key risks: thunderstorms in the forecast; strong winds in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Thursday: Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms. Watch for developing convection and plan alternates.
Strong winds in the forecastWeather.gov
Saturday: winds up to 35 kt. Re-check crosswind components closer to departure.
DayConditionsTemp FWindGustsPrecipPilot note
Thursday Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 85/56 SW 9 kt – 24% Thunderstorms in the forecast
Friday Sunny 81/55 S 9 kt 22 kt 0%
Saturday Sunny 73/45 SW 17 kt 35 kt 1% Strong winds in the forecast
Sunday Sunny 70/45 NW 4 kt – 0%
Monday Sunny 75/48 E 4 kt – 0%
Tuesday Sunny 74/49 SW 4 kt – 1%
Wednesday Sunny 76 SW 4 kt – 3%

Source: National Weather Service (office REV). Forecast issued 0940Z.

AIR QUALITY

Air quality index

0 Good
Primary pollutant: PM2.5
PM2.5 0

Portola, CA · observed 2026-09-10 01:00 PST · Source: AirNow (US EPA). Air-quality data for situational awareness, not an official health advisory.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

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RUNWAYS & WIND
1 runway
NESW0321
WIND
No on-field weather data
No reporting weather station on the field, so wind components cannot be computed. See nearby stations below.
RUNWAYS

Runway detail & declared distances

1 runway · longest 3,093 ft

03/21
Dimensions
3,093 x 50 ft
Surface
Asphalt
RWY 03
Traffic patternLeft
RWY 21
Displaced threshold182 ft
Traffic patternRight

Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.

FIELD CONDITIONS

Field elevation

Field elevation
4,984 ft MSL

Density and pressure altitude need a current temperature and altimeter from the METAR.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0219Z 7:19 PM
Sunrise
1337Z 6:37 AM
Loggable night
0247Z (7:47 PM local) → 1310Z (6:10 AM local)
end of evening to start of morning civil twilight
Position lights required
0219Z (7:19 PM local) → 1337Z (6:37 AM local)
sunset to sunrise (91.209)
Night passenger currency
0319Z (8:19 PM local) → 1237Z (5:37 AM local)
1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Sierraville Dearwater Airport is in Sierraville, California. Field elevation 4,984 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPublicly owned
UseOpen to the public
TypeSmall airport
ManagerBRIAN DAVEY
Manager phone(530) 289-3201
AttendedUNATNDD
CHARTS & AIRSPACE
ICAO / IATAKO79
SectionalSAN FRANCISCO
Center (ARTCC)OAKLAND
Flight service (AFSS)RENO
RegionCalifornia
CountryUnited States
Coordinates39.5810, -120.3540
Distance from city1 NM SE
SERVICES & LIGHTING
Control towerNon-towered
Traffic pattern alt800 ft MSL
CTAF122.900
FREQUENCIES

Communications

122.9
CTAF
CTAF

Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.

AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

KO79 has no on-field report. Nearest reporting station: KTRK (19 NM SE, VFR).

KTRK Truckee Tahoe Airport
19 NM SE
VFR
KBLU Blue Canyon Nyack Airport
25 NM SW
VFR
KRNO Reno Tahoe International Airport
28 NM E
VFR
KCXP Carson Airport
37 NM SE
VFR
KTVL Lake Tahoe Airport
45 NM S
VFR
KMEV Minden-Tahoe Airport
45 NM SE
VFR
AIRPORT REMARKS

Operational remarks

›SIERRA COUNTY PUBLIC WORKS DEPARTMENT, DOWNIEVILLE.
›SIERRA COUNTY PUBLIC WORKS DIRECTOR. TRANSPORTATION@SIERRACOUNTY.CA.GOV
›FOR CD CTC OAKLAND ARTCC AT 510-745-3380.
›ULTRALIGHT ACTIVITY ON & INVOF ARPT.
›PAVEMENT IS CRUMBLING IN AREAS AND CRACKING.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗Wikipedia
↗KO79 on OurAirports
FREQUENTLY ASKED
Does KO79 have a METAR?
No on-field METAR is issued for KO79. This page uses the nearest reporting station as a reference.
Does KO79 have a TAF?
No TAF is issued directly for KO79. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at KO79?
KO79 sits at 4,984 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for KO79?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.