Nantucket Memorial Airport

KACK / ACK

Nantucket, US

Current TAF Forecast

Raw TAF:
TAF KACK 222324Z 2300/2324 16015KT P6SM OVC015 FM230300 14011KT 3SM BR OVC012 FM230600 13009KT 1SM BR OVC008 FM231200 23004KT P6SM BKN020 FM231600 27008KT P6SM SCT030 FM232100 32007KT P6SM SCT100

Detailed TAF Table

Parameter
Thu
01:00Z
+-1h
Thu
02:00Z
+0h
Thu
03:00Z
+1h
Thu
04:00Z
+2h
Thu
05:00Z
+3h
Thu
06:00Z
+4h
Thu
07:00Z
+5h
Thu
08:00Z
+6h
Thu
09:00Z
+7h
Thu
10:00Z
+8h
Thu
11:00Z
+9h
Thu
12:00Z
+10h
Thu
13:00Z
+11h
Thu
14:00Z
+12h
Thu
15:00Z
+13h
Thu
16:00Z
+14h
Thu
17:00Z
+15h
Thu
18:00Z
+16h
Thu
19:00Z
+17h
Thu
20:00Z
+18h
Thu
21:00Z
+19h
Thu
22:00Z
+20h
Wind Dir
160°
S
160°
S
140°
SE
140°
SE
140°
SE
130°
SE
130°
SE
130°
SE
130°
SE
130°
SE
130°
SE
230°
SW
230°
SW
230°
SW
230°
SW
270°
W
270°
W
270°
W
270°
W
270°
W
320°
NW
320°
NW
Wind Speed
15 kt
15 kt
11 kt
11 kt
11 kt
9 kt
9 kt
9 kt
9 kt
9 kt
9 kt
4 kt
4 kt
4 kt
4 kt
8 kt
8 kt
8 kt
8 kt
8 kt
7 kt
7 kt
Visibility
>6SM
>6SM
3SM
3SM
3SM
1SM
1SM
1SM
1SM
1SM
1SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
OVC015
OVC015
OVC012
OVC012
OVC012
OVC008
OVC008
OVC008
OVC008
OVC008
OVC008
BKN020
BKN020
BKN020
BKN020
SCT030
SCT030
SCT030
SCT030
SCT030
SCT100
SCT100
Ceiling
1,500 ft
AGL
1,500 ft
AGL
1,200 ft
AGL
1,200 ft
AGL
1,200 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
2,000 ft
AGL
2,000 ft
AGL
2,000 ft
AGL
2,000 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules MVFR MVFR IFR IFR IFR IFR IFR IFR IFR IFR IFR MVFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR VFR
Day/Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:19Z
🌙
Night
🌅 05:19Z
🌅
Dawn
🌅 05:19Z
☀️
Day
🌅 05:19Z
☀️
Day
🌅 05:19Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:40Z
☀️
Day
🌇 18:40Z
☀️
Day
🌇 18:40Z
🌇
Dusk
🌇 18:40Z
🌙
Night
🌇 18:40Z
🌙
Night
🌙
Night
Flight Rules
VFR: Visual Flight Rules
MVFR: Marginal VFR
IFR: Instrument Flight Rules
LIFR: Low IFR
Ceiling Colors
Red: < 500ft
Amber: 500-1000ft
Blue: 1000-3000ft
Green: > 3000ft
⛈️ TCU: Towering Cumulus
🌩️ CB: Cumulonimbus
+Nh: Hours from now%: Probability of occurrenceAGL: Above Ground Level

Forecast Periods

BASE
MVFR
Wind
160° at 15 kt
Visibility
>6SM
Clouds
OVC015
📖 Plain English Explanation:

This is the base forecast condition. Winds from the South-Southeast (160°) at 15 kt. Visibility will be excellent at more than 6SM. Overcast skies at 1500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM230300 03:00Z - 09:00Z
IFR
Wind
140° at 11 kt
Visibility
3SM
Weather
Mist
Clouds
OVC012
📖 Plain English Explanation:

Winds from the Southeast (140°) at 11 kt. Visibility will be good at 3SM. Weather conditions: Mist. Overcast skies at 1200 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM230600 06:00Z - 12:00Z
IFR
Wind
130° at 9 kt
Visibility
1SM
Weather
Mist
Clouds
OVC008
📖 Plain English Explanation:

Winds from the Southeast (130°) at 9 kt. Visibility will be moderate at 1SM. Weather conditions: Mist. Overcast skies at 800 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM231200 12:00Z - 18:00Z
MVFR
Wind
230° at 4 kt
Visibility
>6SM
Clouds
BKN020
📖 Plain English Explanation:

Winds from the Southwest (230°) at 4 kt. Visibility will be excellent at more than 6SM. Broken clouds at 2000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM231600 16:00Z - 22:00Z
VFR
Wind
270° at 8 kt
Visibility
>6SM
Clouds
SCT030
📖 Plain English Explanation:

Winds from the West (270°) at 8 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 3000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM232100 21:00Z - 03:00Z
VFR
Wind
320° at 7 kt
Visibility
>6SM
Clouds
SCT100
📖 Plain English Explanation:

Winds from the Northwest (320°) at 7 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 10000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

📚 Understanding TAF Forecasts

Terminal Aerodrome Forecast (TAF) provides detailed weather forecasts specifically for aviation operations. Our system translates complex meteorological codes into plain English to help pilots of all experience levels understand forecasted conditions.

What TAF Includes:

  • • Wind direction, speed, and gusts
  • • Visibility in statute miles or kilometers
  • • Weather phenomena (rain, snow, fog, thunderstorms)
  • • Cloud coverage types and altitudes
  • • Forecast changes with timing
  • • Flight rules categories (VFR/IFR)

Change Indicators Explained:

  • BASE - Main forecast conditions
  • FM - Permanent change from specific time
  • BECMG - Gradual change over 2-4 hours
  • TEMPO - Temporary changes (less than 1 hour)
  • PROB30/40 - 30% or 40% probability

🛩️ Flight Rules Categories

VFR

Visual Flight Rules

  • • Ceiling ≥ 3000 ft
  • • Visibility ≥ 5 miles
  • • Good for visual flying

MVFR

Marginal VFR

  • • Ceiling 1000-3000 ft
  • • Visibility 3-5 miles
  • • Caution for VFR

IFR

Instrument Flight Rules

  • • Ceiling 500-1000 ft
  • • Visibility 1-3 miles
  • • Instruments required

LIFR

Low IFR

  • • Ceiling < 500 ft
  • • Visibility < 1 mile
  • • Challenging conditions

💡 TAF Reading Tips

For Student Pilots:

  • • Focus on the plain English explanations above
  • • Pay attention to flight rules categories
  • • Look for wind direction relative to runway headings
  • • Check for temporary conditions (TEMPO)

For Experienced Pilots:

  • • Cross-reference with raw TAF for precise timing
  • • Consider probability forecasts for alternate planning
  • • Monitor BECMG periods for gradual changes
  • • Always check current METAR vs TAF forecast

Important: TAF forecasts should always be supplemented with current METAR observations, PIREPs, and other weather information for complete situational awareness. Weather can change rapidly, and forecasts have inherent limitations.