WxDecoder

US-12851 Weather Las Mesitas Airport

Antonito, ColoradoElevation 8,081 ftSmall airport
OFF-FIELD REFERENCE
Nearest report: KALS · 24 NM NE · 6 min old
Ceiling 8,000 ft, visibility 10 SM.
No on-field report, so no field flight category. Conditions at the field may differ.
OFF-FIELD REFERENCE · KALS
WIND
170@8
steady
VISIBILITY
10 SM
16.1 km
CEILING
8,000 ft
lowest BKN/OVC
ACTIVE NWS ALERTS

Active weather alerts

Flood WarningSevere · Expected · Likely
26 0224Z to 26 0515Z
Conejos, CO
* WHAT...Flooding continues, especially along the Conejos River * WHERE...Southeastern Conejos County... * WHEN...Until 1115 PM MDT. * IMPACTS...Flooding will continue across low-lying and flood-prone locations, especially along and near the Conejos River. * ADDITIONAL DETAILS... - At 824 PM MDT, River gauge reports indicate elevated river levels continue due to multiple days of heavy rainfall…
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.

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 170° at 9 kt, visibility 9 SM, temperature 5C. Treat this as supplemental, not an aviation observation. Forecast suggests tonight showers and thunderstorms likely then partly cloudy, low near 29F, 73% chance of precipitation. Key risks: thunderstorms in the forecast; strong winds in the forecast.

PILOT WEATHER NOTES
Thunderstorms in the forecastWeather.gov
Tonight: Showers And Thunderstorms Likely then Partly Cloudy. Watch for developing convection and plan alternates.
Strong winds in the forecastWeather.gov
Wednesday: winds up to 30 kt. Re-check crosswind components closer to departure.
DayConditionsTemp FWindGustsPrecipPilot note
Tonight Showers And Thunderstorms Likely then Partly Cloudy 29 SSW 4 kt – 73% Thunderstorms in the forecast
Monday Sunny 52/27 S 9 kt – 0%
Tuesday Sunny 57/28 SW 13 kt – 0%
Wednesday Sunny 58/28 SW 13 kt 30 kt 0% Strong winds in the forecast
Thursday Mostly Sunny 59/32 SW 9 kt – 17%
Friday Chance Showers And Thunderstorms 56/33 SW 9 kt – 44%
Saturday Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 52/31 WSW 13 kt – 23%
Sunday Rain Showers 51 SSW 13 kt 30 kt 76%

Source: National Weather Service (office PUB). Forecast issued 0357Z.

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
Crosswind calculator
No runway layout is available for US-12851. Enter a runway number or heading to estimate wind components.
RUNWAYS

Runway detail & declared distances

1 runway · longest 2,700 ft

03/21
Dimensions
2,700 x 60 ft
Surface
Turf (fair)
Edge lights
NSTD
RWY 03
Traffic patternRight
RWY 21
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
8,081 ft MSL

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

DAYLIGHT & NIGHT

Sun & logging windows

Sunset
0014Z 6:14 PM
Sunrise
1322Z 7:22 AM
Loggable night
0041Z (6:41 PM local) → 1255Z (6:55 AM local)
end of evening to start of morning civil twilight
Position lights required
0014Z (6:14 PM local) → 1322Z (7:22 AM local)
sunset to sunrise (91.209)
Night passenger currency
0114Z (7:14 PM local) → 1222Z (6:22 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

Las Mesitas Airport is in Antonito, Colorado. Field elevation 8,081 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT
OwnershipPrivately owned
UsePrivate use
TypeSmall airport
ManagerBRYANT W. "BILL" LEMON JR
Manager phone505-280-3552
CHARTS & AIRSPACE
ICAO / IATAUS-12851
SectionalDENVER
Center (ARTCC)DENVER
Flight service (AFSS)DENVER
RegionColorado
CountryUnited States
Coordinates37.0755, -106.0986
Distance from city4 NM WSW
SERVICES & LIGHTING
Control towerNon-towered
AIRCRAFT ACTIVITY

Traffic patterns

Aircraft activity data is not available for this airport yet.

NEARBY AIRPORTS

Weather reference stations

US-12851 has no on-field report. Nearest reporting station: KALS (24 NM NE, VFR).

KALS San Luis Valley Regional Airport/Bergman Field
24 NM NE
VFR
KPSO Stevens Field
48 NM W
MVFR
KAXX Angel Fire Airport
55 NM SE
MVFR
KLAM Los Alamos Airport
72 NM S
VFR
KRTN Raton Municipal Airport / Crews Field
79 NM E
LIFR
KDRO Durango La Plata County Airport
79 NM W
VFR
AIRPORT REMARKS

Operational remarks

›VFR ONLY.
›VFR ONLY.
OFFICIAL LINKS & SOURCES
↗Search NOTAMs (official FAA NOTAM Search)
↗US-12851 on OurAirports
FREQUENTLY ASKED
Does US-12851 have a METAR?
No on-field METAR is issued for US-12851. This page uses the nearest reporting station as a reference.
Does US-12851 have a TAF?
No TAF is issued directly for US-12851. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at US-12851?
US-12851 sits at 8,081 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for US-12851?
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.