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// Station · 55m ago

KACK

Nantucket Memorial Airport
CAT
WIND 220° / 6 kt
VIS 10+ SM
CEILING
T/Td 12.8°C / 11.7°C
ALTIM 29.93 inHg
ELEV 47 FT
41.2531°N / 70.0602°W
LOCATION · Nantucket, US
N
WIND
220°6 kt
KACK · 47 FT
© OSM · CartoDB

// Current + 24h forecast · METAR loaded · TAF loading…

METRIC
NOW · 08Z
+6H
+12H
+18H
WIND
220°/6
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
13 / 12
 
 
 
ALTIM
29.93"
 
 
 

// Interpretation

VFR with light winds at 220°/6 kt. Visibility better than 10 statute miles and no reported cloud layers. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR KACK 270853Z AUTO 22006KT 10SM 13/12 A2993 RMK AO2 SLP134 T01280117 56005 PWINO

KACK · day 27 at 08:53 UTC · wind from 220° at 6 kt · visibility 10+ SM · temp 13°C / dewpoint 12°C · altimeter 29.93" Hg · automated station w/ precipitation discriminator · sea-level pressure 1013.4 mb

// Runway analysis · computed from current METAR wind

Wind 220° @ 6 kt
2 USABLE · 2 AVOID · 1 CAUTION
N
WIND
220°6 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 2 usable
24 HDG 240° H6 kt X2 kt LEFT PRIMARY · 6,303'
15 HDG 150° H2 kt X6 kt RIGHT ⚠ HIGH XW · 100%
TAILWIND ENDS · AVOID 2 ends
33 HDG 330° T2 kt X6 kt LEFT
06 HDG 060° T6 kt X2 kt RIGHT
Pattern altitude: 1,047 ft MSL (1,000 ft AGL). Verify pattern direction and altitude with the chart supplement before flying. // On calm winds (<3 kt), all runways are usable — favor the longest or whatever the pattern calls for.

// Density altitude · ISA -2°C

-200FT
-247 FT BELOW FIELD ELEV
FIELD ELEV47 FT OAT+13°C ISA DELTA-2°C PRESSURE ALT35 FT
// Performance equivalent Operating here right now feels like operating at KBOS (Boston Logan International Airport, Boston, elev 20 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+0%
-0%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+0%
-0%
Light jetCJ4, Phenom 300, M2
+0%
-0%

Approximate using ~10% perf loss / 1,000 ft DA for normally aspirated, scaled by powerplant type. Verify with your aircraft's POH for accurate numbers — especially above 5,000 ft DA where these rules of thumb diverge.

// Cloud layers · clear · no layers reported

FT 0 5k 10k 15k 20k 25k FRZ LVL · 6,512 FT KACK ELEV · 47 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL6,512 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-5)

09:13ZSUNRISE
16:38ZSOLAR NOON
00:03ZSUNSET
00:36ZCIVIL END
CURRENT09:48Z DAYLIGHT REMAINING14h 15m VFR NIGHT BEGINS00:36Z (14h 48m) DAY LENGTH14h 50m
Waxing Gibbous
ILLUMINATION82% MOONRISE17:54Z MOONSET08:44Z FULL MOON IN4 days

// Nearest reporting stations · 5 shown · 100 NM (sparse area)

// Area map · 80 NM radius · CartoDB Dark Matter + aeronautical overlay

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