Nantucket Memorial Airport (KACK) Aviation Weather, METAR, TAF & ATIS Alerts
Live aviation weather for Nantucket Memorial Airport in Nantucket, MA, including METAR, TAF, flight category, wind, visibility, ceiling, altimeter, runway crosswinds, and Telegram airport alerts.
Nantucket Memorial Airport (KACK) is a regional airport serving Nantucket, MA at 47 ft. KACK reports its own METAR and publishes a TAF — decoded live on this page as flight category, wind, visibility, ceiling and altimeter. Its 6 runways (06, 12, 15, 24) — longest 6,303 ft — are checked against the current wind in the crosswind table below. The official FAA airport diagram is at the bottom of the page. Track KACK in the ATIS Alerts Telegram bot to get a message when a new METAR changes the picture — flight category, wind, or ceiling past your selected minimums.
Wind from the south (170°) at 7 kt, visibility 10+ statute miles, no cloud data, temperature 20°C (68°F), altimeter 29.77 inHg. Conditions are Visual Flight Rules (VFR).
METAR KACK 290053Z AUTO 17007KT 10SM CLR 20/19 A2977 RMK AO1 SLP081 T02000194 $
What changed at KACK?
Since the 2353Z (7:53 PM EDT) report — compared automatically against the latest METAR.
No significant changes since the 2353Z report — conditions are holding steady.
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Current pilot readout for KACK
KACK is currently VFR with winds from 170° at 7 knots, visibility 10+ statute miles, and no ceiling reported. The strongest crosswind component is currently on runway 06, about 6 knots. Density altitude is approximately 850 ft (field elevation 47 ft). Review the latest TAF below for forecast changes before departure.
⚠️ 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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Stop refreshing aviation weather manually. Track KACK 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 KACK 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 KACK. This is intended as a planning aid only and should not replace official performance calculations or pilot judgment.
| Runway | Length | Surface | Head / Tail | Crosswind |
|---|---|---|---|---|
| 15FAV | 4,500 ft | ASP | 6 kt head | 4 kt right |
| 24 | 6,303 ft | ASP | 4 kt head | 6 kt left |
| 06 | 6,303 ft | ASP | 4 kt tail | 6 kt right |
| 33 | 4,500 ft | ASP | 6 kt tail | 4 kt left |
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→7 kt, ceiling unlimited → unlimited.
KACK weather radar
Live NEXRAD + lightning, with a 4-hour future-radar forecast — drag to pan, tap ⚡ to toggle lightning.
Live weather radar around Nantucket Memorial Airport in Nantucket, MA: 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 KACK 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.
Pilot reports (PIREPs) within 100 NM of KACK
Reported by pilots in flight over the past 6 hours — via aviationweather.gov.
Show raw report
LWM UA /OV LWM/TM 2341/FL187/TP E75S/TB NEG/RM SMOOTH DURC HYLND SID
LWM UAHeader — reporting station and UA: a routine pilot report.OV LWMLocation — fix or navaid, optionally with a radial and distance in NM.TM 2341Reported at 23:41 UTC.FL187Altitude: 18,700 ft MSL.TP E75SAircraft type reporting.TB NEGTurbulence: none reported.RM SMOOTH DURC HYLND SIDRemarks.Show raw report
EWB UA /OV EWB/TM 2029/FL015/TP C402/TB LGT TB
EWB UAHeader — reporting station and UA: a routine pilot report.OV EWBLocation — fix or navaid, optionally with a radial and distance in NM.TM 2029Reported at 20:29 UTC.FL015Altitude: 1,500 ft MSL.TP C402Aircraft type reporting.TB LGT TBTurbulence: light tb.Show raw report
EWB UA /OV EWB/TM 1914/FLDURD/TP C402/SK BASES 020-025/TB LGT CHOP
EWB UAHeader — reporting station and UA: a routine pilot report.OV EWBLocation — fix or navaid, optionally with a radial and distance in NM.TM 1914Reported at 19:14 UTC.FLDURDReported during descent.TP C402Aircraft type reporting.SK BASES 020-025Sky condition — cloud bases and tops in hundreds of feet MSL.TB LGT CHOPTurbulence: light chop.⚠️ PIREPs are unverified pilot reports. Not for operational use — conditions change between reports.
Recent aviation weather trends at KACK
From ATIS Alerts' hourly weather history.
Over the past 24 hours, KACK reported a mix of conditions, most often VFR across 42 observations, with 13 flight-category changes. The lowest ceiling was 200 ft. Wind most often came from the S.
Most recent change: MVFR → VFR
Most recent change: MVFR → VFR
- 24
- 47%
- 06
- 31%
- 15
- 12%
- 33
- 10%
TAF — Terminal Aerodrome Forecast
Issued 2334Z (7:34 PM EDT)
TAF KACK 282334Z 2900/2924 17011KT P6SM SCT070 FM290600 14009KT 5SM BR SCT050 FM291500 12016G23KT P6SM BKN030 PROB30 2915/2917 4SM -SHRA OVC015 FM291900 12017G24KT 6SM -SHRA BKN008
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Airport facts
Reference data from the OurAirports dataset.
- Type
- Regional airport
- ICAO
- KACK
- IATA
- ACK
- FAA LID
- ACK
- City
- Nantucket
- State
- Massachusetts
- Country
- United States
- Elevation
- 47 ft
- Coordinates
- 41.2531, -70.0602
- Runways
- 6
- Longest runway
- 6,303 ft
- Weather reporting
- Reports METAR
- TAF
- Published
- ATIS
- 127.5 MHz
- CTAF
- 118.3 MHz
- Time zone
- America/New_York
- Next sunset
- 22h 54m
Run a flight school, FBO, or club here? Embed KACK'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
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.
- Lambert R/C Flying Association - South Shore Rd — Nantucket, MA · 2 mi
- Martha's Vineyard Model Flying Club - Marth'as Vineyard Regional High School — Oak Bluffs, MA · 30 mi
- Martha's Vineyard Model Flying Club - MF Correllus State Forest — Edgartown, MA · 30 mi
Historical Flying Weather
2006–2025 · ATIS Alerts Flying Weather Index
Based on historical observations from 2006–2025, KACK reported VFR conditions during about 70.3% of valid daylight observations, with an estimated 231 VFR flying days a year. November had the most VFR weather; July had the most instrument conditions. Surface winds averaged 10.6 kt, calm 3.3% of the time.
Full historical breakdown
Flight category by month
| Month | VFR % | MVFR % | IFR % | LIFR % |
|---|---|---|---|---|
| Jan | 69.4 | 16.7 | 6.8 | 7.1 |
| Feb | 71.7 | 13.6 | 6.8 | 7.9 |
| Mar | 72.1 | 12.4 | 6.3 | 9.3 |
| Apr | 71.8 | 10.7 | 6.0 | 11.6 |
| May | 63.4 | 9.5 | 6.9 | 20.1 |
| Jun | 62.5 | 10.0 | 6.0 | 21.5 |
| Jul | 58.8 | 10.8 | 6.1 | 24.2 |
| Aug | 69.7 | 10.2 | 6.0 | 14.1 |
| Sep | 74.4 | 8.7 | 6.0 | 11.0 |
| Oct | 73.8 | 12.7 | 6.4 | 7.0 |
| Nov | 77.9 | 12.9 | 4.2 | 4.9 |
| Dec | 70.7 | 16.9 | 6.4 | 6.0 |
Average wind by month
| Month | Mean wind (kt) |
|---|---|
| Jan | 12.1 kt |
| Feb | 12.1 kt |
| Mar | 12.6 kt |
| Apr | 11.6 kt |
| May | 10.4 kt |
| Jun | 9.2 kt |
| Jul | 8.3 kt |
| Aug | 8.2 kt |
| Sep | 9.3 kt |
| Oct | 10.9 kt |
| Nov | 11.5 kt |
| Dec | 11.6 kt |
Historical summary of past observations — not a forecast or safety rating. Always check the current METAR, TAF, and a weather briefing before flight.
KACK airport diagram
Official FAA taxiway and runway layout. Tap to zoom.
The FAA airport diagram for Nantucket Memorial Airport in Nantucket, MA shows the runway and taxiway layout across 6 runways, ramp areas, and hold-short positions — review it before taxiing at an unfamiliar field.
Official FAA airport diagram · d-TPP cycle 2608 · Not for navigation. Download the official FAA PDF ↗
KACK weather — frequently asked
What runways are available at KACK?+
KACK has 6 runways — 06, 12, 15, 24, 30, 33; the longest is 6,303 ft. This page computes the live crosswind for each runway end from the current wind.
Does KACK report its own weather?+
Yes — Nantucket Memorial Airport has its own weather station and publishes METAR observations, which this page decodes live.
Does KACK have a TAF?+
Yes — the TAF is shown on this page below the current conditions.
Does KACK broadcast D-ATIS?+
No — KACK does not broadcast D-ATIS. Alerts for KACK from the ATIS Alerts bot (@atisalerts_bot) are based on its METAR instead.
Where can I find the KACK airport diagram?+
The official FAA airport diagram for Nantucket Memorial Airport (KACK) is shown on this page — it maps the runway and taxiway layout, ramps, and hold-short lines. Tap it to zoom, or download the official FAA PDF free from the link under the diagram (updated every 28-day FAA charting cycle).
Pilot PIREPs for Nantucket Memorial Airport (KACK)
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 Nantucket Memorial 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 KACK 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.
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⚠️ Not for operational use. Always verify with official FAA-approved preflight weather sources before flight.
No D-ATIS at this airport — showing METAR.
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