Long Island Mac Arthur Airport

KISP / ISP

Islip, US

Current TAF Forecast

Raw TAF:
TAF KISP 042222Z 0422/0518 21009KT P6SM SCT050 SCT250 PROB30 0422/0424 27020G35KT 2SM TSRA BKN040CB FM050000 VRB05KT P6SM VCSH BKN050 OVC150 TEMPO 0500/0504 27020G35KT 2SM TSRA BKN040CB FM050600 VRB04KT P6SM OVC100 FM051400 17007KT P6SM FEW030 OVC150

Detailed TAF Table

Parameter
Sat
22:00Z
+-1h
Sat
23:00Z
+0h
Sun
00:00Z
+1h
Sun
01:00Z
+2h
Sun
02:00Z
+3h
Sun
03:00Z
+4h
Sun
04:00Z
+5h
Sun
05:00Z
+6h
Sun
06:00Z
+7h
Sun
07:00Z
+8h
Sun
08:00Z
+9h
Sun
09:00Z
+10h
Sun
10:00Z
+11h
Sun
11:00Z
+12h
Sun
12:00Z
+13h
Sun
13:00Z
+14h
Sun
14:00Z
+15h
Sun
15:00Z
+16h
Sun
16:00Z
+17h
Wind Dir
210°
SW
210°
SW
270°
W
270°
W
270°
W
270°
W
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
210°
SW
210°
SW
170°
S
170°
S
170°
S
Wind Speed
9 kt
9 kt
20 kt
G35 kt
20 kt
G35 kt
20 kt
G35 kt
20 kt
G35 kt
5 kt
5 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
9 kt
9 kt
7 kt
7 kt
7 kt
Visibility
>6SM
>6SM
2SM
2SM
2SM
2SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
Thunderstorm Rain
TSRA
Thunderstorm Rain
TSRA
Thunderstorm Rain
TSRA
Thunderstorm Rain
TSRA
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
SCT050
SCT250
SCT050
SCT250
BKN040CB
BKN040CB
BKN040CB
BKN040CB
BKN050
OVC150
BKN050
OVC150
OVC100
OVC100
OVC100
OVC100
OVC100
OVC100
SCT050
SCT250
SCT050
SCT250
FEW030
OVC150
FEW030
OVC150
FEW030
OVC150
Ceiling
🌤️ Unlimited
🌤️ Unlimited
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
5,000 ft
AGL
5,000 ft
AGL
10,000 ft
AGL
10,000 ft
AGL
10,000 ft
AGL
10,000 ft
AGL
10,000 ft
AGL
10,000 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
15,000 ft
AGL
15,000 ft
AGL
15,000 ft
AGL
Flight Rules VFR VFR IFR IFR IFR IFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR
Day/Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:43Z
🌙
Night
🌅 04:43Z
🌙
Night
🌅 04:43Z
☀️
Day
🌅 04:43Z
☀️
Day
🌅 04:43Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
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 occurrenceAGL: Above Ground Level

Forecast Periods

BASE
VFR
Wind
210° at 9 kt
Visibility
>6SM
Clouds
SCT050 SCT250
📖 Plain English Explanation:

This is the base forecast condition. Winds from the South-Southwest (210°) at 9 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 5000 feet, Scattered clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 22:00Z - 00:00Z
IFR
Wind
270° at 20 kt
Gusts: 35 kt
Visibility
2SM
Weather
Thunderstorm Rain
Clouds
BKN040CB
📖 Plain English Explanation:

There is a 30% probability of: Winds from the West (270°) at 20 kt. Gusts up to 35 kt are expected. Visibility will be moderate at 2SM. Weather conditions: Thunderstorm Rain. Broken clouds at 4000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM050000 00:00Z - 06:00Z
VFR
Wind
VRB° at 5 kt
Visibility
>6SM
Clouds
BKN050 OVC150
📖 Plain English Explanation:

Winds will be variable in direction at 5 kt. Visibility will be excellent at more than 6SM. Broken clouds at 5000 feet, Overcast skies at 15000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 00:00Z - 04:00Z
IFR
Wind
270° at 20 kt
Gusts: 35 kt
Visibility
2SM
Weather
Thunderstorm Rain
Clouds
BKN040CB
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds from the West (270°) at 20 kt. Gusts up to 35 kt are expected. Visibility will be moderate at 2SM. Weather conditions: Thunderstorm Rain. Broken clouds at 4000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM050600 06:00Z - 12:00Z
VFR
Wind
VRB° at 4 kt
Visibility
>6SM
Clouds
OVC100
📖 Plain English Explanation:

Winds will be variable in direction at 4 kt. Visibility will be excellent at more than 6SM. Overcast skies at 10000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM051400 14:00Z - 20:00Z
VFR
Wind
170° at 7 kt
Visibility
>6SM
Clouds
FEW030 OVC150
📖 Plain English Explanation:

Winds from the South (170°) at 7 kt. Visibility will be excellent at more than 6SM. Few clouds at 3000 feet, Overcast skies at 15000 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.