Chatham Seaplane Base (CYM) Area Aviation Weather & Runway Winds
Aviation weather near Chatham Seaplane Base in Chatham, AK, decoded from the nearest reporting station (PAGN) — conditions, runway crosswinds, and free Telegram airport alerts.
Chatham Seaplane Base (CYM) is a seaplane base in Chatham, AK. CYM has no weather station of its own — conditions here are decoded from PAGN, about 12 nm away, the nearest reporting station, and local conditions can differ. Its 2 runways (NW, SE) — longest 10,000 ft — are checked against the current wind in the crosswind table below. The nearest TAF is issued for PASI. Track it in the ATIS Alerts Telegram bot to get alerts read from PAGN, the station this page is based on.
No weather station at this airport — showing the nearest station PAGN, 12.3 nm away.
Wind from the southeast (140°) at 3 kt, visibility 10+ statute miles, overcast at 7,500 ft, temperature 15°C (59°F), altimeter 29.79 inHg. Conditions are Visual Flight Rules (VFR), ceiling 7,500 ft.
METAR PAGN 290256Z AUTO 14003KT 10SM OVC075 15/11 A2979 RMK AO2 SLP078 T01500111 53005 $
What changed at PAGN (nearest station)?
Since the 0156Z (5:56 PM AKDT) report — compared automatically against the latest METAR.
No significant changes since the 0156Z report — conditions are holding steady.
This is exactly what ATIS Alerts watches for you — get a Telegram message when CYM's weather changes, free →
Current pilot readout for CYM
Based on the nearest station (PAGN), CYM is currently VFR with winds from 140° at 3 knots, visibility 10+ statute miles, and a 7,500 ft ceiling. The strongest crosswind component is currently on runway NW, about 2 knots. Density altitude is approximately 150 ft (field elevation 0 ft). CYM does not publish a TAF — the nearest TAF station is PASI, about 31 nm away.
⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
New to aviation weather? How to read a METAR → · What VFR/MVFR/IFR mean → · Decode any METAR/TAF → · Density altitude calculator →
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Track CYM free on TelegramRunway wind check
Estimated head/tailwind and crosswind for each runway end from the current reported wind.
Use this section to quickly compare current wind alignment across available runways at CYM. This is intended as a planning aid only and should not replace official performance calculations or pilot judgment.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| NWFAV | 10,000 ft | WATER | 2 kt tail | 2 kt right |
| SE | 10,000 ft | WATER | 2 kt tail | 2 kt right |
Open the crosswind calculator — try your own wind and runway numbers →
24-hour trend
Wind, ceiling and flight category over the last 24 hours.
Over the last 23 h: wind 0→3 kt, ceiling 7,000 ft → 7,500 ft.
CYM weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast — drag to pan, tap ⚡ to toggle lightning.
Live weather radar around Chatham Seaplane Base in Chatham, AK: the NOAA/NWS NEXRAD composite updates about every five minutes, with NOAA lightning strike density overlaid. The loop plays the past 50 minutes, then continues into a future-radar forecast (+1 to +4 hours, NOAA HRRR model) so you can see where precipitation around CYM is headed.
Radar: NOAA/NWS via IEM · Forecast: NOAA HRRR · Lightning: NOAA · Map © OpenStreetMap © CARTO
Forecast frames (amber label) are HRRR model guidance, not observed radar. Lightning strike density appears as a blue-white glow when strikes are detected in view. Radar and lightning coverage are limited in parts of Alaska, Hawaii, and offshore areas. Not for navigation.
Recent aviation weather trends at CYM
From ATIS Alerts' hourly weather history.
Over the past 24 hours, the nearest station PAGN reported a mix of conditions, most often VFR across 43 observations, with 4 flight-category changes. The lowest ceiling was 200 ft. Wind most often came from the N.
Most recent change: LIFR → VFR
Most recent change: LIFR → VFR
- NW/SE
- 100%
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We'll message you on Telegram when a new report moves the picture near CYM (Chatham Seaplane Base) — alerts read from PAGN, the station this page uses.
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Airport facts
Reference data from the OurAirports dataset.
- Type
- Seaplane base
- IATA
- CYM
- FAA LID
- 05AA
- City
- Chatham
- State
- Alaska
- Country
- United States
- Elevation
- 0 ft
- Coordinates
- 57.5149, -134.9460
- Runways
- 2
- Longest runway
- 10,000 ft
- Weather reporting
- Nearest station PAGN
- TAF
- Nearest PASI
- Time zone
- America/Sitka
- Sunset in
- 2h 28m
Run a flight school, FBO, or club here? Embed CYM'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
3 airports25–50 NM
9 airports+3 more within 50 NM
50–100 NM
7 airports+1 more within 100 NM
CYM weather — frequently asked
What runways are available at CYM?+
CYM has 2 runways — NW, SE; the longest is 10,000 ft. This page computes the live crosswind for each runway end from the current wind.
Where does the weather shown for CYM come from?+
Chatham Seaplane Base does not have its own weather station. Conditions shown here come from the nearest reporting station, PAGN, about 12 nm away — close enough for situational awareness, but local conditions at CYM can differ.
Does CYM have a TAF?+
No — CYM does not publish its own TAF. The nearest TAF station is PASI, about 31 nm away.
Does CYM broadcast D-ATIS?+
No — CYM does not broadcast D-ATIS. Alerts for CYM from the ATIS Alerts bot (@atisalerts_bot) are based on its METAR (via the nearest reporting station) instead.
Pilot PIREPs for Chatham Seaplane Base (CYM)
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 Chatham Seaplane Base, 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 CYM 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.
Why pilots use ATIS Alerts
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⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
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