Long Island Mac Arthur Airport

KISP / ISP

Islip, US

Current TAF Forecast

Raw TAF:
TAF KISP 230901Z 2309/2406 VRB04KT P6SM SCT040 SCT100 TEMPO 2309/2312 3/4SM BR VV002 FM231400 31010KT P6SM SCT250 FM231700 31012G20KT P6SM FEW250 FM232300 31009KT P6SM SCT250

Detailed TAF Table

Parameter
Thu
09:00Z
+-1h
Thu
10:00Z
+0h
Thu
11:00Z
+1h
Thu
12:00Z
+2h
Thu
13:00Z
+3h
Thu
14:00Z
+4h
Thu
15:00Z
+5h
Thu
16:00Z
+6h
Thu
17:00Z
+7h
Thu
18:00Z
+8h
Thu
19:00Z
+9h
Thu
20:00Z
+10h
Thu
21:00Z
+11h
Thu
22:00Z
+12h
Thu
23:00Z
+13h
Fri
00:00Z
+14h
Fri
01:00Z
+15h
Fri
02:00Z
+16h
Fri
03:00Z
+17h
Fri
04:00Z
+18h
Wind Dir
VRB
VRB
VRB
VRB
VRB
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
Wind Speed
4 kt
4 kt
4 kt
4 kt
4 kt
10 kt
10 kt
10 kt
12 kt
G20 kt
12 kt
G20 kt
12 kt
G20 kt
12 kt
G20 kt
12 kt
G20 kt
12 kt
G20 kt
9 kt
9 kt
9 kt
9 kt
9 kt
9 kt
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
SCT040
SCT100
SCT040
SCT100
SCT040
SCT100
SCT040
SCT100
SCT040
SCT100
SCT250
SCT250
SCT250
FEW250
FEW250
FEW250
FEW250
FEW250
FEW250
SCT250
SCT250
SCT250
SCT250
SCT250
SCT250
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:39Z
☀️
Day
🌇 18:39Z
☀️
Day
🌇 18:39Z
🌇
Dusk
🌇 18:39Z
🌙
Night
🌇 18:39Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:18Z
🌙
Night
🌅 05:18Z
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
VFR
Wind
VRB° at 4 kt
Visibility
>6SM
Clouds
SCT040 SCT100
📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 4 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 4000 feet, Scattered clouds at 10000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 09:00Z - 12:00Z
LIFR
Visibility
3/4SM
Weather
Mist
Clouds
VV002
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be good at 3/4SM. Weather conditions: Mist. Vertical visibility at 200 feet. Low IFR conditions - challenging even for instrument operations.

FM231400 14:00Z - 20:00Z
VFR
Wind
310° at 10 kt
Visibility
>6SM
Clouds
SCT250
📖 Plain English Explanation:

Winds from the Northwest (310°) at 10 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM231700 17:00Z - 23:00Z
VFR
Wind
310° at 12 kt
Gusts: 20 kt
Visibility
>6SM
Clouds
FEW250
📖 Plain English Explanation:

Winds from the Northwest (310°) at 12 kt. Gusts up to 20 kt are expected. Visibility will be excellent at more than 6SM. Few clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM232300 23:00Z - 05:00Z
VFR
Wind
310° at 9 kt
Visibility
>6SM
Clouds
SCT250
📖 Plain English Explanation:

Winds from the Northwest (310°) at 9 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 25000 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.