Alpine County Airport (KM45) Area Aviation Weather & Runway Winds
As of 4:53 AM PDT, Oct 28, based on the nearest station (KTVL), KM45 is currently VFR with winds from 170° at 3 knots, visibility 10+ statute miles, and no ceiling reported.
Aviation weather near Alpine County Airport in Markleeville, CA, decoded from the nearest reporting station (KTVL): conditions and runway crosswinds.
Alpine County Airport (KM45) is a general aviation airport serving pilots in and around Markleeville, CA at a field elevation of 5,872 ft. KM45 has no weather station of its own. Conditions here are decoded from KTVL, about 14 nm away, the nearest reporting station, and local conditions can differ. It has one runway (17/35), the longest 4,443 ft. CTAF is 122.9.
No weather station at this airport: showing the nearest station KTVL, 14.3 nm away.
Wind from the south (170°) at 3 kt, visibility 10+ statute miles, no cloud data, temperature -8°C (18°F), altimeter 30.05 inHg. Conditions are Visual Flight Rules (VFR).
METAR KTVL 281153Z AUTO 17003KT 10SM CLR M08/M12 A3005 RMK AO2 SLP171 T10781117 11028 21078 58003
What changed at KTVL (nearest station)?
Since the 1053Z (3:53 AM PDT) report, compared automatically against the latest METAR.
No significant changes since the 1053Z (3:53 AM PDT) report, conditions are holding steady.
Current pilot readout for KM45
Based on the nearest station (KTVL), KM45 is currently VFR with winds from 170° at 3 knots, visibility 10+ statute miles, and no ceiling reported. the wind favors south-facing runway ends (17). Density altitude is approximately 4,400 ft (field elevation 5,872 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.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| 17FAV | 4,443 ft | ASP | 3 kt head | 1 kt left |
| 35 | 4,443 ft | ASP | 3 kt tail | 1 kt right |
Open the crosswind calculator to try your own wind and runway numbers →
KM45 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 17/354,443 × 50 ft · ASPCurrent useno stated-runway source at KM45Wind
- 17
- 3 kt headwind · 1 kt crosswind from left
- 35
- 3 kt tailwind · 1 kt crosswind from right
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 23 h: wind 6→3 kt, ceiling unlimited → unlimited.
KM45 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 KM45
From ATIS Alerts' hourly weather history.
Over the past 24 hours, the nearest station KTVL reported mostly VFR across 24 observations, with 0 flight-category changes. The strongest gust reached 27 kt. Wind most often came from the S.
Most recent change: MVFR → VFR
Share of hours each runway had the most headwind. From wind reports, not ATC assignments.
- 17
- 69%
- 35
- 31%
TAF | Terminal Aerodrome Forecast
Issued 1120Z (4:20 AM PDT)
TAF KTVL 281120Z 2812/2912 18003KT P6SM SKC FM282000 04006KT P6SM FEW250 FM290200 VRB03KT P6SM BKN250
New to TAFs? How to read one →
Get KM45 weather alerts in Telegram
Stop refreshing aviation weather manually. Track KM45 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 KM45 free on TelegramNo live weather from KM45
Live crosswind meter
KM45 has no weather feed online, so the wind comes from KTVL, 14 nm away.
Wind is 14° off runway 17, the end with the most headwind right now.
Have a weather station at KM45? Help us make your field's weather available to every pilot, free. Add your field's wx station →Asphalt · 4,443 ft. Headings from FAA runway data. Not for navigation.
Field aerial
North up
Runway 17/35 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
- 6,672 ft MSL (800 AGL)
- Control tower
- None
- Wind indicator
- Unlighted
Airport
- Type
- General aviation airport
- FAA LID
- M45
- City
- Markleeville
- State
- California
- Country
- United States
- Elevation
- 5,872 ft
- Coordinates
- 38.7347, -119.7670
- Runways
- 1 physical runway · 2 runway ends
- Longest runway
- 4,443 ft
- Weather reporting
- Nearest station KTVL
- TAF
- Nearest KTVL
- CTAF
- 122.9 MHz
- Time zone
- America/Los_Angeles
- Next sunset
- 12h 58m
Run a flight school, FBO, or club here? Embed KM45'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
8 airports+2 more within 25 NM
25–50 NM
8 airports+2 more within 50 NM
50–100 NM
8 airports+2 more within 100 NM
RC flying fields nearby
AMA model-aircraft club fields around this airport: live wind, crosswind & flyability on each page.
- Sierra Sagebrush Flyers, Inc - Pinenut Rd , Gardnerville, NV · 13 mi
Customize your M45 shirt or mug
M45's real runway layout on the back, elevation and tower frequency on the front. Add your tail number on the sleeve.
Pilot PIREPs for Alpine County Airport (KM45)
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 Alpine County 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 KM45 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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