Purdue University Airport

KLAF / LAF

West Lafayette, US

Current TAF Forecast

Raw TAF:
TAF KLAF 172320Z 1800/1824 26011KT P6SM SCT025 BKN060 PROB30 1801/1807 6SM -SN SCT025 BKN035 FM180700 24008KT P6SM OVC020 FM181100 23012KT P6SM BKN070

Detailed TAF Table

Parameter
Sun
00:00Z
+-1h
Sun
01:00Z
+0h
Sun
02:00Z
+1h
Sun
03:00Z
+2h
Sun
04:00Z
+3h
Sun
05:00Z
+4h
Sun
06:00Z
+5h
Sun
07:00Z
+6h
Sun
08:00Z
+7h
Sun
09:00Z
+8h
Sun
10:00Z
+9h
Sun
11:00Z
+10h
Sun
12:00Z
+11h
Sun
13:00Z
+12h
Sun
14:00Z
+13h
Sun
15:00Z
+14h
Sun
16:00Z
+15h
Sun
17:00Z
+16h
Sun
18:00Z
+17h
Sun
19:00Z
+18h
Sun
20:00Z
+19h
Sun
21:00Z
+20h
Sun
22:00Z
+21h
Wind Dir
260°
W
260°
W
260°
W
260°
W
260°
W
260°
W
260°
W
240°
SW
240°
SW
240°
SW
240°
SW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
260°
W
260°
W
260°
W
260°
W
260°
W
260°
W
Wind Speed
11kt
11kt
11kt
11kt
11kt
11kt
11kt
8kt
8kt
8kt
8kt
12kt
12kt
12kt
12kt
12kt
12kt
11kt
11kt
11kt
11kt
11kt
11kt
Visibility
>6SM
6SM
6SM
6SM
6SM
6SM
6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
Light Snow
-SN
30%
Light Snow
-SN
30%
Light Snow
-SN
30%
Light Snow
-SN
30%
Light Snow
-SN
30%
Light Snow
-SN
30%
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
SCT025
BKN060
SCT025
BKN035
SCT025
BKN035
SCT025
BKN035
SCT025
BKN035
SCT025
BKN035
SCT025
BKN035
OVC020
OVC020
OVC020
OVC020
BKN070
BKN070
BKN070
BKN070
BKN070
BKN070
SCT025
BKN060
SCT025
BKN060
SCT025
BKN060
SCT025
BKN060
SCT025
BKN060
SCT025
BKN060
Ceiling
6000ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
2000ft
AGL
2000ft
AGL
2000ft
AGL
2000ft
AGL
7000ft
AGL
7000ft
AGL
7000ft
AGL
7000ft
AGL
7000ft
AGL
7000ft
AGL
6000ft
AGL
6000ft
AGL
6000ft
AGL
6000ft
AGL
6000ft
AGL
6000ft
AGL
Flight Rules VFR VFR VFR VFR VFR VFR VFR MVFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR
Day/Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 07:09
🌙
Night
🌅 07:09
🌅
Dawn
🌅 07:09
☀️
Day
🌅 07:09
☀️
Day
🌅 07:09
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 16:50
☀️
Day
🌇 16:50
☀️
Day
🌇 16:50
🌇
Dusk
🌇 16:50
🌙
Night
🌇 16:50
🌙
Night
🌙
Night
🌙
Night
🌙
Night
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
260° at 11 kt
Visibility
>6SM
Clouds
SCT025 BKN060
📖 Plain English Explanation:

This is the base forecast condition. Winds from the West (260°) at 11kt. Visibility will be excellent at more than 6SM. Scattered clouds at 2500 feet, Broken clouds at 6000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 2026-01-18 01:00:00 - 2026-01-18 07:00:00
VFR
Visibility
6SM
Weather
Light Snow
Clouds
SCT025 BKN035
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be excellent at 6SM. Weather conditions: Light Snow. Scattered clouds at 2500 feet, Broken clouds at 3500 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM180700 2026-01-18 07:00:00 - 2026-01-18 13:00:00
MVFR
Wind
240° at 8 kt
Visibility
>6SM
Clouds
OVC020
📖 Plain English Explanation:

Winds from the West-Southwest (240°) at 8kt. Visibility will be excellent at more than 6SM. Overcast skies at 2000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM181100 2026-01-18 11:00:00 - 2026-01-18 17:00:00
VFR
Wind
230° at 12 kt
Visibility
>6SM
Clouds
BKN070
📖 Plain English Explanation:

Winds from the Southwest (230°) at 12kt. Visibility will be excellent at more than 6SM. Broken clouds at 7000 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.