Nantucket Memorial Airport

KACK / ACK

Nantucket, US

Current TAF Forecast

Raw TAF:
TAF KACK 151120Z 1512/1612 27006KT 1/2SM FG BKN003 FM151400 33005KT 5SM BR OVC008 FM152100 01008KT 5SM -SHRA BR BKN008 FM160100 36008KT 3SM BR BKN010

Detailed TAF Table

Parameter
Fri
13:00Z
+-1h
Fri
14:00Z
+0h
Fri
15:00Z
+1h
Fri
16:00Z
+2h
Fri
17:00Z
+3h
Fri
18:00Z
+4h
Fri
19:00Z
+5h
Fri
20:00Z
+6h
Fri
21:00Z
+7h
Fri
22:00Z
+8h
Fri
23:00Z
+9h
Sat
00:00Z
+10h
Sat
01:00Z
+11h
Sat
02:00Z
+12h
Sat
03:00Z
+13h
Sat
04:00Z
+14h
Sat
05:00Z
+15h
Sat
06:00Z
+16h
Sat
07:00Z
+17h
Sat
08:00Z
+18h
Sat
09:00Z
+19h
Sat
10:00Z
+20h
Wind Dir
270°
W
330°
NW
330°
NW
330°
NW
330°
NW
330°
NW
330°
NW
270°
W
10°
N
10°
N
10°
N
10°
N
360°
N
360°
N
360°
N
360°
N
360°
N
360°
N
270°
W
270°
W
270°
W
270°
W
Wind Speed
6 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
6 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
6 kt
6 kt
6 kt
6 kt
Visibility
1/2SM
5SM
5SM
5SM
5SM
5SM
5SM
1/2SM
5SM
5SM
5SM
5SM
3SM
3SM
3SM
3SM
3SM
3SM
1/2SM
1/2SM
1/2SM
1/2SM
Weather
Fog
FG
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Fog
FG
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Fog
FG
Fog
FG
Fog
FG
Fog
FG
Clouds
BKN003
OVC008
OVC008
OVC008
OVC008
OVC008
OVC008
BKN003
BKN008
BKN008
BKN008
BKN008
BKN010
BKN010
BKN010
BKN010
BKN010
BKN010
BKN003
BKN003
BKN003
BKN003
Ceiling
300 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
300 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
Flight Rules LIFR IFR IFR IFR IFR IFR IFR LIFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR LIFR LIFR LIFR LIFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 19:02Z
☀️
Day
🌇 19:02Z
☀️
Day
🌇 19:02Z
🌙
Night
🌇 19:02Z
🌙
Night
🌇 19:02Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:56Z
🌙
Night
🌅 04:56Z
🌙
Night
🌅 04:56Z
☀️
Day
🌅 04:56Z
☀️
Day
🌅 04:56Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
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 occurrence • AGL: Above Ground Level

Forecast Periods

BASE
LIFR
Wind
270° at 6 kt
Visibility
1/2SM
Weather
Fog
Clouds
BKN003
📖 Plain English Explanation:

This is the base forecast condition. Winds from the West (270°) at 6 kt. Visibility will be moderate at 1/2SM. Weather conditions: Fog. Broken clouds at 300 feet. Low IFR conditions - challenging even for instrument operations.

FM151400 14:00Z - 20:00Z
IFR
Wind
330° at 5 kt
Visibility
5SM
Weather
Mist
Clouds
OVC008
📖 Plain English Explanation:

Winds from the North-Northwest (330°) at 5 kt. Visibility will be good at 5SM. Weather conditions: Mist. Overcast skies at 800 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM152100 21:00Z - 03:00Z
IFR
Wind
10° at 8 kt
Visibility
5SM
Weather
Light Showers Rain, Mist
Clouds
BKN008
📖 Plain English Explanation:

Winds from the North (10°) at 8 kt. Visibility will be good at 5SM. Weather conditions: Light Showers Rain, Mist. Broken clouds at 800 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM160100 01:00Z - 07:00Z
IFR
Wind
360° at 8 kt
Visibility
3SM
Weather
Mist
Clouds
BKN010
📖 Plain English Explanation:

Winds from the North (360°) at 8 kt. Visibility will be good at 3SM. Weather conditions: Mist. Broken clouds at 1000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

📚 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.