Nantucket Memorial Airport

KACK / ACK

Nantucket, US

Current TAF Forecast

Raw TAF:
TAF KACK 050520Z 0506/0606 22004KT 1/2SM FZFG OVC003 TEMPO 0506/0510 1/4SM FZFG FM051500 07008KT 1SM BR OVC003 FM051800 06011KT 1SM -RA BR OVC003 FM060500 08017G25KT 2SM -RA BR OVC003

Detailed TAF Table

Parameter
Thu
08:00Z
+-1h
Thu
09:00Z
+0h
Thu
10:00Z
+1h
Thu
11:00Z
+2h
Thu
12:00Z
+3h
Thu
13:00Z
+4h
Thu
14:00Z
+5h
Thu
15:00Z
+6h
Thu
16:00Z
+7h
Thu
17:00Z
+8h
Thu
18:00Z
+9h
Thu
19:00Z
+10h
Thu
20:00Z
+11h
Thu
21:00Z
+12h
Thu
22:00Z
+13h
Thu
23:00Z
+14h
Fri
00:00Z
+15h
Fri
01:00Z
+16h
Fri
02:00Z
+17h
Fri
03:00Z
+18h
Fri
04:00Z
+19h
Wind Dir
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
70°
E
70°
E
70°
E
60°
NE
60°
NE
60°
NE
60°
NE
60°
NE
60°
NE
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
Wind Speed
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
8 kt
8 kt
8 kt
11 kt
11 kt
11 kt
11 kt
11 kt
11 kt
4 kt
4 kt
4 kt
4 kt
4 kt
Visibility
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
1SM
1SM
1SM
1SM
1SM
1SM
1SM
1SM
1SM
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
Weather
Freezing Fog
FZFG
Freezing Fog
FZFG
Freezing Fog
FZFG
Freezing Fog
FZFG
Freezing Fog
FZFG
Freezing Fog
FZFG
Freezing Fog
FZFG
Mist
BR
Mist
BR
Mist
BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Freezing Fog
FZFG
Freezing Fog
FZFG
Freezing Fog
FZFG
Freezing Fog
FZFG
Freezing Fog
FZFG
Clouds
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
Ceiling
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
Flight Rules LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR
Day/Night
☀️
Day
🌅 06:24Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 17:35Z
☀️
Day
🌇 17:35Z
☀️
Day
🌇 17:35Z
🌇
Dusk
🌇 17:35Z
🌙
Night
🌇 17:35Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 06:22Z
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
220° at 4 kt
Visibility
1/2SM
Weather
Freezing Fog
Clouds
OVC003
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southwest (220°) at 4 kt. Visibility will be moderate at 1/2SM. Weather conditions: Freezing Fog. Overcast skies at 300 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 06:00Z - 10:00Z
MVFR
Visibility
1/4SM
Weather
Freezing Fog
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 1/4SM. Weather conditions: Freezing Fog. Marginal VFR conditions - some restrictions for visual flying.

FM051500 15:00Z - 21:00Z
LIFR
Wind
70° at 8 kt
Visibility
1SM
Weather
Mist
Clouds
OVC003
📖 Plain English Explanation:

Winds from the East-Northeast (70°) at 8 kt. Visibility will be moderate at 1SM. Weather conditions: Mist. Overcast skies at 300 feet. Low IFR conditions - challenging even for instrument operations.

FM051800 18:00Z - 00:00Z
LIFR
Wind
60° at 11 kt
Visibility
1SM
Weather
Light Rain, Mist
Clouds
OVC003
📖 Plain English Explanation:

Winds from the East-Northeast (60°) at 11 kt. Visibility will be moderate at 1SM. Weather conditions: Light Rain, Mist. Overcast skies at 300 feet. Low IFR conditions - challenging even for instrument operations.

FM060500 05:00Z - 11:00Z
LIFR
Wind
80° at 17 kt
Gusts: 25 kt
Visibility
2SM
Weather
Light Rain, Mist
Clouds
OVC003
📖 Plain English Explanation:

Winds from the East (80°) at 17 kt. Gusts up to 25 kt are expected. Visibility will be moderate at 2SM. Weather conditions: Light Rain, Mist. Overcast skies at 300 feet. Low IFR conditions - challenging even for instrument 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.