Alton Bay Seaplane Base (B18) Area Aviation Weather & Runway Winds
As of 12:56 PM ET, Oct 28, based on the nearest station (KLCI), B18 is currently VFR with winds from 260° at 4 knots, visibility 10+ statute miles, and no ceiling reported.
Aviation weather near Alton Bay Seaplane Base in Alton Bay, NH, decoded from the nearest reporting station (KLCI): conditions and runway crosswinds.
Alton Bay Seaplane Base (B18) is a seaplane base in Alton Bay, NH. B18 has no weather station of its own. Conditions here are decoded from KLCI, about 10 nm away, the nearest reporting station, and local conditions can differ. It has one runway (01/19), the longest 2,600 ft. The nearest TAF is issued for KCON.
No weather station at this airport: showing the nearest station KLCI, 9.8 nm away.
Wind from the west (260°) at 4 kt, visibility 10+ statute miles, no cloud data, temperature 7°C (45°F), altimeter 30.45 inHg. Conditions are Visual Flight Rules (VFR).
METAR KLCI 281656Z AUTO 26004KT 10SM CLR 07/M03 A3045 RMK AO2 SLP317 T00721033
What changed at KLCI (nearest station)?
Since the 1556Z (11:56 AM EDT) report, compared automatically against the latest METAR.
- Pressure falling: altimeter 30.48 → 30.45 inHg.
Current pilot readout for B18
Based on the nearest station (KLCI), B18 is currently VFR with winds from 260° at 4 knots, visibility 10+ statute miles, and no ceiling reported. Density altitude is approximately -950 ft (field elevation 504 ft). B18 does not publish a TAF. The nearest TAF station is KCON, about 20 nm away.
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 |
|---|---|---|---|---|
| 19FAV | 2,600 ft | WATER-E | 0 kt head | 4 kt right |
| 01 | 2,600 ft | WATER-E | 1 kt tail | 4 kt left |
Open the crosswind calculator to try your own wind and runway numbers →
B18 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 01/192,600 × 100 ft · WATER-ECurrent useno stated-runway source at B18Wind
- 01
- 1 kt tailwind · 4 kt crosswind from left
- 19
- 0 kt headwind · 4 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 10→4 kt, ceiling unlimited → unlimited.
B18 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.
Pilot reports (PIREPs) within 100 NM of B18
Reported by pilots in flight over the past 6 hours, via aviationweather.gov.
Show raw report
RUT UA /OV RUT230015/TM 1441/FL310/TP E75L/TB OCNL LGT CHOP
RUT UAHeader: reporting station and UA: a routine pilot report.OV RUT230015Location: fix or navaid, optionally with a radial and distance in NM.TM 1441Reported at 14:41 UTC.FL310Altitude: 31,000 ft MSL.TP E75LAircraft type reporting.TB OCNL LGT CHOPTurbulence: occasional light chop.⚠️ PIREPs are unverified pilot reports. Not for operational use: conditions change between reports.
Recent aviation weather trends at B18
From ATIS Alerts' hourly weather history.
Over the past 24 hours, the nearest station KLCI reported mostly VFR across 24 observations, with 0 flight-category changes. Wind most often came from the W.
Most recent change: LIFR → VFR
Share of hours each runway had the most headwind. From wind reports, not ATC assignments.
- 01
- 52%
- 19
- 48%
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Live crosswind meter
B18 has no weather feed online, so the wind comes from KLCI, 9.8 nm away.
Wind is 86° off runway 19, the end with the most headwind right now.
Have a weather station at B18? Help us make your field's weather available to every pilot, free. Add your field's wx station →Water · 2,600 ft. Headings from FAA runway data. Not for navigation.
Field aerial
North up
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
- Control tower
- None
- Wind indicator
- Unlighted
Airport
- Type
- Seaplane base
- FAA LID
- B18
- City
- Alton Bay
- State
- New Hampshire
- Country
- United States
- Elevation
- 504 ft
- Coordinates
- 43.4776, -71.2370
- Runways
- 1 physical runway · 2 runway ends
- Longest runway
- 2,600 ft
- Weather reporting
- Nearest station KLCI
- TAF
- Nearest KCON
- Time zone
- America/New_York
- Sunset in
- 4h 15m
Run a flight school, FBO, or club here? Embed B18'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.
- Winnipesaukee Radio Controller - Mile Hill Rd , Belmont, NH · 12 mi
- Ponderosa RC Hawks - Hubbard Rd , Berwick, ME · 20 mi
- Skyhaven Airport , Rochester, NH · 21 mi
Pilot PIREPs for Alton Bay Seaplane Base (B18)
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 Alton Bay 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 B18 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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