Long Island Mac Arthur Airport

KISP / ISP

Islip, US

Current TAF Forecast

Raw TAF:
TAF KISP 040520Z 0406/0506 00000KT 1SM -RA BR OVC003 TEMPO 0406/0408 1/2SM FG OVC002 FM040800 VRB01KT 1/2SM -DZ FG OVC002 FM041100 VRB02KT 2SM BR OVC005 FM041400 VRB01KT 5SM BR BKN015 FM041700 36004KT P6SM FEW015 SCT250 FM042100 VRB05KT P6SM SCT100 BKN250 FM050400 VRB02KT 6SM BR FEW006 BKN100 BKN250

Detailed TAF Table

Parameter
Wed
06:00Z
+-1h
Wed
07:00Z
+0h
Wed
08:00Z
+1h
Wed
09:00Z
+2h
Wed
10:00Z
+3h
Wed
11:00Z
+4h
Wed
12:00Z
+5h
Wed
13:00Z
+6h
Wed
14:00Z
+7h
Wed
15:00Z
+8h
Wed
16:00Z
+9h
Wed
17:00Z
+10h
Wed
18:00Z
+11h
Wed
19:00Z
+12h
Wed
20:00Z
+13h
Wed
21:00Z
+14h
Wed
22:00Z
+15h
Wed
23:00Z
+16h
Thu
00:00Z
+17h
Thu
01:00Z
+18h
Thu
02:00Z
+19h
Thu
03:00Z
+20h
Thu
04:00Z
+21h
Wind Dir -- --
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
360°
N
360°
N
360°
N
360°
N
VRB
VRB
VRB
VRB
VRB
VRB
 --
VRB
Wind Speed -- --
1 kt
1 kt
1 kt
2 kt
2 kt
2 kt
1 kt
1 kt
1 kt
4 kt
4 kt
4 kt
4 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
 --
2 kt
Visibility
1SM
1SM
1/2SM
1/2SM
1/2SM
2SM
2SM
2SM
5SM
5SM
5SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
1SM
6SM
Weather
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Drizzle, Fog
-DZ FG
Light Drizzle, Fog
-DZ FG
Light Drizzle, Fog
-DZ FG
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Light Rain, Mist
-RA BR
Mist
BR
Clouds
OVC003
OVC003
OVC002
OVC002
OVC002
OVC005
OVC005
OVC005
BKN015
BKN015
BKN015
FEW015
SCT250
FEW015
SCT250
FEW015
SCT250
FEW015
SCT250
SCT100
BKN250
SCT100
BKN250
SCT100
BKN250
SCT100
BKN250
SCT100
BKN250
SCT100
BKN250
OVC003
FEW006
BKN100
Ceiling
300 ft
AGL
300 ft
AGL
200 ft
AGL
200 ft
AGL
200 ft
AGL
500 ft
AGL
500 ft
AGL
500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
300 ft
AGL
10,000 ft
AGL
Flight Rules LIFR LIFR LIFR LIFR LIFR IFR IFR IFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR LIFR VFR
Day/Night
🌅
Dawn
🌅 06:25Z
☀️
Day
🌅 06:25Z
☀️
Day
🌅 06:25Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 17:34Z
☀️
Day
🌇 17:34Z
☀️
Day
🌇 17:34Z
🌇
Dusk
🌇 17:34Z
🌙
Night
🌇 17:34Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 06:23Z
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
0° at 0 kt
Visibility
1SM
Weather
Light Rain, Mist
Clouds
OVC003
📖 Plain English Explanation:

This is the base forecast condition. Winds from the North (0°) at 0 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.

TEMPO 06:00Z - 08:00Z
LIFR
Visibility
1/2SM
Weather
Fog
Clouds
OVC002
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 1/2SM. Weather conditions: Fog. Overcast skies at 200 feet. Low IFR conditions - challenging even for instrument operations.

FM040800 08:00Z - 14:00Z
LIFR
Wind
VRB° at 1 kt
Visibility
1/2SM
Weather
Light Drizzle, Fog
Clouds
OVC002
📖 Plain English Explanation:

Winds will be variable in direction at 1 kt. Visibility will be moderate at 1/2SM. Weather conditions: Light Drizzle, Fog. Overcast skies at 200 feet. Low IFR conditions - challenging even for instrument operations.

FM041100 11:00Z - 17:00Z
IFR
Wind
VRB° at 2 kt
Visibility
2SM
Weather
Mist
Clouds
OVC005
📖 Plain English Explanation:

Winds will be variable in direction at 2 kt. Visibility will be moderate at 2SM. Weather conditions: Mist. Overcast skies at 500 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM041400 14:00Z - 20:00Z
MVFR
Wind
VRB° at 1 kt
Visibility
5SM
Weather
Mist
Clouds
BKN015
📖 Plain English Explanation:

Winds will be variable in direction at 1 kt. Visibility will be good at 5SM. Weather conditions: Mist. Broken clouds at 1500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM041700 17:00Z - 23:00Z
VFR
Wind
360° at 4 kt
Visibility
>6SM
Clouds
FEW015 SCT250
📖 Plain English Explanation:

Winds from the North (360°) at 4 kt. Visibility will be excellent at more than 6SM. Few clouds at 1500 feet, Scattered clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM042100 21:00Z - 03:00Z
VFR
Wind
VRB° at 5 kt
Visibility
>6SM
Clouds
SCT100 BKN250
📖 Plain English Explanation:

Winds will be variable in direction at 5 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 10000 feet, Broken clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM050400 04:00Z - 10:00Z
VFR
Wind
VRB° at 2 kt
Visibility
6SM
Weather
Mist
Clouds
FEW006 BKN100 BKN250
📖 Plain English Explanation:

Winds will be variable in direction at 2 kt. Visibility will be excellent at 6SM. Weather conditions: Mist. Few clouds at 600 feet, Broken clouds at 10000 feet, Broken 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.