K7S1 METAR Ruby Valley Field

Twin Bridges, MontanaElevation 4,777 ftSmall airport

OFF-FIELD REFERENCE

Nearest report: KDLN · 20 NM SW · 4 min old

Ceiling 900 ft, visibility 9 SM, snow.

No on-field report, so no field flight category. Conditions at the field may differ.

OFF-FIELD REFERENCE · KDLN

WIND

260@5

steady

VISIBILITY

9 SM

14.5 km

CEILING

900 ft

lowest BKN/OVC

ACTIVE NWS ALERTS

Active weather alerts

Dense Fog AdvisoryModerate · Expected · Likely

25 1905Z to 26 1800Z

Elkhorn and Boulder Mountains; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Northwest Beaverhead County; Beaverhead and Western Madison below 6000ft; Gallatin and Madison County Mountains and Centennial Mountains

* WHAT...Variable visibility down to a quarter mile or less in dense fog. * WHERE...Canyon Ferry Area, Elkhorn and Boulder Mountains, Beaverhead and Western Madison below 6000ft, Gallatin Valley, Gallatin and Madison County Mountains and Centennial Mountains, Madison River Valley, Missouri Headwaters, and Northwest Beaverhead County. * WHEN...Until noon MDT Monday. * IMPACTS...Low visibility co…

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

Alerts from the National Weather Service. For situational awareness only; always confirm against an official briefing.

FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

No aviation METAR is published for this airport. The nearest National Weather Service station reports wind from 236.3° at 3 kt, gusting 5 kt, temperature 7.44C. This observation is older than usual, so treat it with extra caution. Treat this as supplemental, not an aviation observation. Forecast suggests tonight mostly cloudy then areas of fog, low near 20F, 0% chance of precipitation. Key risks: strong winds in the forecast.

PILOT WEATHER NOTES

Strong winds in the forecastWeather.gov

Tuesday: winds up to 29 kt. Re-check crosswind components closer to departure.

Day	Conditions	Temp F	Wind	Gusts	Precip	Pilot note
Tonight	Mostly Cloudy then Areas Of Fog	20	NE 6 kt	–	0%
Monday	Areas Of Fog then Mostly Cloudy	53/28	S 3 kt	–	89%
Tuesday	Chance Light Snow then Partly Sunny	47/21	SSW 16 kt	29 kt	28%	Strong winds in the forecast
Wednesday	Sunny	48/22	S 11 kt	22 kt	4%
Thursday	Mostly Sunny	49/23	S 5 kt	–	15%
Friday	Chance Light Snow	46/23	E 6 kt	–	39%
Saturday	Chance Rain And Snow	47/23	SSW 4 kt	–	28%
Sunday	Mostly Sunny then Chance Light Rain	48	WSW 5 kt	–	38%

Source: National Weather Service (office TFX). Forecast issued 0156Z.

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

2 runways

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

2 runways · longest 6,000 ft

17/35

Dimensions

6,000 x 75 ft

Surface

Asphalt (good)

Edge lights

MED

RWY 17182°T

VGSIPAPI (P2L)

Traffic patternLeft

RWY 352°T

VGSIPAPI (P2L)

Traffic patternLeft

07/25

Dimensions

2,866 x 100 ft

Surface

Turf

RWY 0783°T

Traffic patternLeft

RWY 25264°T

Traffic patternLeft

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

FIELD CONDITIONS

Field elevation

4,777 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset

0027Z 6:27 PM

Sunrise

1400Z 8:00 AM

Loggable night

0057Z (6:57 PM local) → 1329Z (7:29 AM local)

end of evening to start of morning civil twilight

Position lights required

0027Z (6:27 PM local) → 1400Z (8:00 AM local)

sunset to sunrise (91.209)

Night passenger currency

0127Z (7:27 PM local) → 1300Z (7:00 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

Ruby Valley Field is in Twin Bridges, Montana. Field elevation 4,777 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT

OwnershipPublicly owned

UseOpen to the public

TypeSmall airport

ManagerKENDRA HORN

Manager phone(406) 684-5335

AttendedALL MON-FRI, 0800–1700

CHARTS & AIRSPACE

ICAO / IATAK7S1

SectionalGREAT FALLS

Center (ARTCC)SALT LAKE CITY

Flight service (AFSS)GREAT FALLS

RegionMontana

CountryUnited States

Coordinates45.5337, -112.3003

Distance from city2 NM SE

SERVICES & LIGHTING

Fuel100LL · Jet A

Control towerNon-towered

Field lightingSee remarks

BeaconSunset to sunrise · White-green (lighted land airport)

CTAF122.900

FREQUENCIES

Communications

122.9

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

K7S1 has no on-field report. Nearest reporting station: KDLN (20 NM SW, IFR).

KDLN Dillon Airport

20 NM SW

IFR

KBTM Bert Mooney Airport

27 NM N

VFR

KBZN Bozeman Yellowstone International Airport

50 NM E

LIFR

KHLN Helena Regional Airport

66 NM N

VFR

KSMN Lemhi County Airport

71 NM W

VFR

KWYS Yellowstone Airport

71 NM SE

VFR

AIRPORT REMARKS

Operational remarks

›ACTVT PAPI RWY 17 & 35; MIRL RWY 17/35 - CTAF.

›FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.

›AFLD SFC COND UNMONITORED.

›DEER & ANTELOPE ON & INVOF ARPT.

›195 FT TALL TOWER 1.4 NM 'NE' OF RY 17 THRESHOLD.

›OR (406) 684-5335.

OFFICIAL LINKS & SOURCES

↗Search NOTAMs (official FAA NOTAM Search)

↗Official airport website

↗Wikipedia

↗K7S1 on OurAirports

FREQUENTLY ASKED

Does K7S1 have a METAR?

Yes. K7S1 is a METAR-reporting station; the current observation loads live on this page.

Does K7S1 have a TAF?

When K7S1 issues a TAF, its decoded forecast timeline loads live on this page; otherwise use the nearest TAF-issuing field as a planning reference.

What is the field elevation at K7S1?

K7S1 sits at 4,777 ft MSL, which factors into the density-altitude estimate on this page.

Is this an official preflight weather briefing for K7S1?

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.