Purdue University Airport

KLAF / LAF

West Lafayette, US

Current TAF Forecast

Raw TAF:
TAF KLAF 211726Z 2118/2218 22017G27KT P6SM FEW100 SCT200 FM220100 22013KT P6SM BKN080 PROB30 2201/2207 3SM TSRA BKN060CB FM220800 26006KT P6SM SCT020 BKN060 FM221300 25008KT P6SM BKN020

Detailed TAF Table

Parameter
Tue
19:00Z
+-1h
Tue
20:00Z
+0h
Tue
21:00Z
+1h
Tue
22:00Z
+2h
Tue
23:00Z
+3h
Wed
00:00Z
+4h
Wed
01:00Z
+5h
Wed
02:00Z
+6h
Wed
03:00Z
+7h
Wed
04:00Z
+8h
Wed
05:00Z
+9h
Wed
06:00Z
+10h
Wed
07:00Z
+11h
Wed
08:00Z
+12h
Wed
09:00Z
+13h
Wed
10:00Z
+14h
Wed
11:00Z
+15h
Wed
12:00Z
+16h
Wed
13:00Z
+17h
Wed
14:00Z
+18h
Wed
15:00Z
+19h
Wed
16:00Z
+20h
Wind Dir
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
260°
W
260°
W
260°
W
260°
W
260°
W
250°
W
250°
W
250°
W
250°
W
Wind Speed
17 kt
G27 kt
17 kt
G27 kt
17 kt
G27 kt
17 kt
G27 kt
17 kt
G27 kt
17 kt
G27 kt
17 kt
G27 kt
17 kt
G27 kt
17 kt
G27 kt
17 kt
G27 kt
17 kt
G27 kt
17 kt
G27 kt
17 kt
G27 kt
6 kt
G27 kt
6 kt
G27 kt
6 kt
G27 kt
6 kt
G27 kt
6 kt
G27 kt
8 kt
G27 kt
8 kt
G27 kt
8 kt
G27 kt
8 kt
G27 kt
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
3SM
3SM
3SM
3SM
3SM
3SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Thunderstorm Rain
TSRA
30%
Thunderstorm Rain
TSRA
30%
Thunderstorm Rain
TSRA
30%
Thunderstorm Rain
TSRA
30%
Thunderstorm Rain
TSRA
30%
Thunderstorm Rain
TSRA
30%
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
FEW100
SCT200
FEW100
SCT200
FEW100
SCT200
FEW100
SCT200
FEW100
SCT200
FEW100
SCT200
BKN060CB
BKN060CB
BKN060CB
BKN060CB
BKN060CB
BKN060CB
FEW100
SCT200
SCT020
BKN060
SCT020
BKN060
SCT020
BKN060
SCT020
BKN060
SCT020
BKN060
BKN020
BKN020
BKN020
BKN020
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
6,000 ft
AGL
6,000 ft
AGL
6,000 ft
AGL
6,000 ft
AGL
6,000 ft
AGL
6,000 ft
AGL
🌤️ Unlimited
6,000 ft
AGL
6,000 ft
AGL
6,000 ft
AGL
6,000 ft
AGL
6,000 ft
AGL
2,000 ft
AGL
2,000 ft
AGL
2,000 ft
AGL
2,000 ft
AGL
Flight Rules VFR VFR VFR VFR VFR VFR MVFR MVFR MVFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR MVFR MVFR MVFR MVFR
Day/Night
🌇
Dusk
🌇 18:37Z
🌙
Night
🌇 18:37Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:21Z
🌙
Night
🌅 05:21Z
🌅
Dawn
🌅 05:21Z
☀️
Day
🌅 05:21Z
☀️
Day
🌅 05:21Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:38Z
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
VFR
Wind
220° at 17 kt
Gusts: 27 kt
Visibility
>6SM
Clouds
FEW100 SCT200
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southwest (220°) at 17 kt. Gusts up to 27 kt are expected. Visibility will be excellent at more than 6SM. Few clouds at 10000 feet, Scattered clouds at 20000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM220100 01:00Z - 07:00Z
VFR
Wind
220° at 13 kt
Visibility
>6SM
Clouds
BKN080
📖 Plain English Explanation:

Winds from the Southwest (220°) at 13 kt. Visibility will be excellent at more than 6SM. Broken clouds at 8000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 01:00Z - 07:00Z
MVFR
Visibility
3SM
Weather
Thunderstorm Rain
Clouds
BKN060CB
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be good at 3SM. Weather conditions: Thunderstorm Rain. Broken clouds at 6000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM220800 08:00Z - 14:00Z
VFR
Wind
260° at 6 kt
Visibility
>6SM
Clouds
SCT020 BKN060
📖 Plain English Explanation:

Winds from the West (260°) at 6 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 2000 feet, Broken clouds at 6000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM221300 13:00Z - 19:00Z
MVFR
Wind
250° at 8 kt
Visibility
>6SM
Clouds
BKN020
📖 Plain English Explanation:

Winds from the West-Southwest (250°) at 8 kt. Visibility will be excellent at more than 6SM. Broken clouds at 2000 feet. Marginal VFR conditions - some restrictions for visual flying.

📚 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.