Toussus-le-Noble Airport

LFPN / TNF

Toussus-le-Noble, Yvelines, FR

Current TAF Forecast

Raw TAF:
TAF LFPN 141700Z 1418/1503 20010KT 9999 BKN016 PROB40 TEMPO 1418/1421 21015G25KT BKN012 TEMPO 1421/1503 22015G30KT PROB40 TEMPO 1501/1503 2700 RADZ BKN009

Detailed TAF Table

Parameter
Sun
18:00Z
+-1h
Sun
19:00Z
+0h
Sun
20:00Z
+1h
Sun
21:00Z
+2h
Sun
22:00Z
+3h
Sun
23:00Z
+4h
Mon
00:00Z
+5h
Mon
01:00Z
+6h
Wind Dir
200°
S
200°
S
200°
S
220°
SW
220°
SW
220°
SW
220°
SW
200°
S
Wind Speed
10kt
10kt
10kt
15kt
G30kt
15kt
G30kt
15kt
G30kt
15kt
G30kt
10kt
G30kt
Visibility
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
2.7 km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
RADZ
RADZ
40%
Clouds
BKN016
BKN016
BKN016
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
BKN009
Ceiling
1600ft
AGL
1600ft
AGL
1600ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
900ft
AGL
Flight Rules MVFR MVFR MVFR VFR VFR VFR VFR IFR
Day/Night
☀️
Day
🌇 18:11
🌙
Night
🌇 18:11
🌙
Night
🌇 18:11
🌙
Night
🌙
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
MVFR
Wind
200° at 10 kt
Visibility
10+ km
Clouds
BKN016
📖 Plain English Explanation:

This is the base forecast condition. Winds from the South-Southwest (200°) at 10kt. Visibility will be excellent at 10+ km. Broken clouds at 1600 feet. Marginal VFR conditions - some restrictions for visual flying.

PROB40 TEMPO 2025-10-14 18:00:00 - 2025-09-14 21:00:00
MVFR
Wind
210° at 15 kt
Gusts: 25 kt
Clouds
BKN012
📖 Plain English Explanation:

There is a 40% probability of: Winds from the South-Southwest (210°) at 15kt. Gusts up to 25kt are expected. Broken clouds at 1200 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 2025-09-14 21:00:00 - 2025-09-15 03:00:00
VFR
Wind
220° at 15 kt
Gusts: 30 kt
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds from the Southwest (220°) at 15kt. Gusts up to 30kt are expected. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB40 TEMPO 2025-09-15 01:00:00 - 2025-09-15 03:00:00
IFR
Visibility
2.7 km
Weather
RADZ
Clouds
BKN009
📖 Plain English Explanation:

There is a 40% probability of: Visibility will be moderate at 2.7 km. Weather conditions: RADZ. Broken clouds at 900 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.