Rouen Vallée de Seine Airport

LFOP / URO

Boos, FR

Current TAF Forecast

Raw TAF:
TAF LFOP 171400Z 1715/1724 14007KT 9999 OVC009 TEMPO 1715/1718 OVC012 BECMG 1718/1720 4000 BR PROB40 1720/1722 0900 FG VV///

Detailed TAF Table

Parameter
Sat
22:00Z
+-1h
Wind Dir
140°
SE
Wind Speed
7kt
Visibility
10+ km
Weather
☀️ Clear
Clouds
OVC009
Ceiling
900ft
AGL
Flight Rules IFR
Day/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
IFR
Wind
140° at 7 kt
Visibility
10+ km
Clouds
OVC009
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southeast (140°) at 7kt. Visibility will be excellent at 10+ km. Overcast skies at 900 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

TEMPO 2026-02-17 15:00:00 - 2026-02-17 18:00:00
MVFR
Clouds
OVC012
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Overcast skies at 1200 feet. Marginal VFR conditions - some restrictions for visual flying.

BECMG 2026-02-17 18:00:00 - 2026-02-17 20:00:00
IFR
Visibility
4 km
Weather
Mist
📖 Plain English Explanation:

Conditions will gradually change to become: Visibility will be moderate at 4 km. Weather conditions: Mist. Instrument Flight Rules (IFR) conditions - instrument flying required.

PROB40 2026-02-17 20:00:00 - 2026-02-17 22:00:00
LIFR
Visibility
0.9 km
Weather
Fog
📖 Plain English Explanation:

There is a 40% probability of: Visibility will be poor at 0.9 km. Weather conditions: Fog. Low IFR conditions - challenging even for instrument 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.