Toussus-le-Noble Airport

LFPN / TNF

Toussus-le-Noble, Yvelines, FR

Current TAF Forecast

Raw TAF:
TAF LFPN 021700Z 0218/0303 27010KT 9999 BKN030 TEMPO 0218/0220 26015G25KT 4000 -SHRA BKN030CB PROB30 TEMPO 0218/0220 4000 -TSRA BKN030CB

Detailed TAF Table

Parameter
Tue
20:00Z
+-1h
Tue
21:00Z
+0h
Tue
22:00Z
+1h
Tue
23:00Z
+2h
Wed
00:00Z
+3h
Wed
01:00Z
+4h
Wind Dir
270°
W
270°
W
270°
W
270°
W
270°
W
270°
W
Wind Speed
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
Visibility
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
BKN030
BKN030
BKN030
BKN030
BKN030
BKN030
Ceiling
3,000 ft
AGL
3,000 ft
AGL
3,000 ft
AGL
3,000 ft
AGL
3,000 ft
AGL
3,000 ft
AGL
Flight Rules VFR VFR VFR VFR VFR VFR
Day/Night
🌙
Night
🌇 19:24Z
🌙
Night
🌇 19:24Z
🌙
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
270° at 10 kt
Visibility
10+ km
Clouds
BKN030
📖 Plain English Explanation:

This is the base forecast condition. Winds from the West (270°) at 10 kt. Visibility will be excellent at 10+ km. Broken clouds at 3000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 18:00Z - 20:00Z
IFR
Wind
260° at 15 kt
Gusts: 25 kt
Visibility
4 km
Weather
Light Showers Rain
Clouds
BKN030CB
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds from the West (260°) at 15 kt. Gusts up to 25 kt are expected. Visibility will be moderate at 4 km. Weather conditions: Light Showers Rain. Broken clouds at 3000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

PROB30 TEMPO 18:00Z - 20:00Z
IFR
Visibility
4 km
Weather
Light Thunderstorm Rain
Clouds
BKN030CB
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be moderate at 4 km. Weather conditions: Light Thunderstorm Rain. Broken clouds at 3000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

📚 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.