London Heathrow Airport

EGLL / LHR

London, GB

Current TAF Forecast

Raw TAF:
TAF EGLL 141701Z 1418/1524 34010KT 9999 SCT035 TEMPO 1418/1423 6000 SHRA TEMPO 1418/1421 04010KT BKN014 BKN025CB PROB30 TEMPO 1418/1421 VRB15G25KT 2500 +TSRAGS PROB30 TEMPO 1421/1422 VRB15G25KT 4000 +SHRA PROB40 TEMPO 1512/1516 7000 SHRA

Detailed TAF Table

Parameter
Thu
23:00Z
+-1h
Fri
00:00Z
+0h
Fri
01:00Z
+1h
Fri
02:00Z
+2h
Fri
03:00Z
+3h
Fri
04:00Z
+4h
Fri
05:00Z
+5h
Fri
06:00Z
+6h
Fri
07:00Z
+7h
Fri
08:00Z
+8h
Fri
09:00Z
+9h
Fri
10:00Z
+10h
Fri
11:00Z
+11h
Fri
12:00Z
+12h
Fri
13:00Z
+13h
Fri
14:00Z
+14h
Fri
15:00Z
+15h
Fri
16:00Z
+16h
Fri
17:00Z
+17h
Fri
18:00Z
+18h
Fri
19:00Z
+19h
Fri
20:00Z
+20h
Fri
21:00Z
+21h
Fri
22:00Z
+22h
Wind Dir
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
Wind Speed
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
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
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
7 km
7 km
7 km
7 km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Showers Rain
SHRA
40%
Showers Rain
SHRA
40%
Showers Rain
SHRA
40%
Showers Rain
SHRA
40%
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
SCT035
SCT035
SCT035
SCT035
SCT035
SCT035
SCT035
SCT035
SCT035
SCT035
SCT035
SCT035
SCT035
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
SCT035
SCT035
SCT035
SCT035
SCT035
SCT035
SCT035
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR MVFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR VFR
Day/Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:45Z
🌙
Night
🌅 04:45Z
🌙
Night
🌅 04:45Z
☀️
Day
🌅 04:45Z
☀️
Day
🌅 04:45Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 19:14Z
☀️
Day
🌇 19:14Z
☀️
Day
🌇 19:14Z
🌙
Night
🌇 19:14Z
🌙
Night
🌇 19:14Z
🌙
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
340° at 10 kt
Visibility
10+ km
Clouds
SCT035
📖 Plain English Explanation:

This is the base forecast condition. Winds from the North-Northwest (340°) at 10 kt. Visibility will be excellent at 10+ km. Scattered clouds at 3500 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 18:00Z - 23:00Z
MVFR
Visibility
6 km
Weather
Showers Rain
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be good at 6 km. Weather conditions: Showers Rain. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 18:00Z - 21:00Z
MVFR
Wind
40° at 10 kt
Clouds
BKN014 BKN025CB
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds from the Northeast (40°) at 10 kt. Broken clouds at 1400 feet, Broken clouds at 2500 feet. Marginal VFR conditions - some restrictions for visual flying.

PROB30 TEMPO 18:00Z - 21:00Z
IFR
Wind
VRB° at 15 kt
Gusts: 25 kt
Visibility
2.5 km
Weather
Heavy Thunderstorm RAGS
📖 Plain English Explanation:

There is a 30% probability of: Winds will be variable in direction at 15 kt. Gusts up to 25 kt are expected. Visibility will be moderate at 2.5 km. Weather conditions: Heavy Thunderstorm RAGS. Instrument Flight Rules (IFR) conditions - instrument flying required.

PROB30 TEMPO 21:00Z - 22:00Z
IFR
Wind
VRB° at 15 kt
Gusts: 25 kt
Visibility
4 km
Weather
Heavy Showers Rain
📖 Plain English Explanation:

There is a 30% probability of: Winds will be variable in direction at 15 kt. Gusts up to 25 kt are expected. Visibility will be moderate at 4 km. Weather conditions: Heavy Showers Rain. Instrument Flight Rules (IFR) conditions - instrument flying required.

PROB40 TEMPO 12:00Z - 16:00Z
MVFR
Visibility
7 km
Weather
Showers Rain
📖 Plain English Explanation:

There is a 40% probability of: Visibility will be good at 7 km. Weather conditions: Showers Rain. 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.