RAF Northolt

EGWU / NHT

London, GB

Current TAF Forecast

Raw TAF:
TAF EGWU 141654Z 1418/1512 22014KT 9999 BKN008 BECMG 1418/1421 FEW008 BKN030 TEMPO 1418/1501 23016G28KT TEMPO 1418/1422 6000 RADZ SHRA PROB40 TEMPO 1418/1421 3000 +SHRA PROB30 TEMPO 1421/1508 SCT018 BECMG 1501/1503 24015G25KT PROB30 TEMPO 1501/1509 7000 -SHRA TEMPO 1506/1512 25020G36KT PROB30 TEMPO 1509/1512 5000 SHRA

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
Mon
02:00Z
+7h
Mon
03:00Z
+8h
Mon
04:00Z
+9h
Mon
05:00Z
+10h
Mon
06:00Z
+11h
Mon
07:00Z
+12h
Mon
08:00Z
+13h
Mon
09:00Z
+14h
Mon
10:00Z
+15h
Wind Dir
220°
SW
220°
SW
220°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
Wind Speed
14kt
14kt
14kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
Visibility
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
7 km
7 km
7 km
7 km
7 km
7 km
7 km
7 km
5 km
5 km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Light Showers Rain
-SHRA
30%
Light Showers Rain
-SHRA
30%
Light Showers Rain
-SHRA
30%
Light Showers Rain
-SHRA
30%
Light Showers Rain
-SHRA
30%
Light Showers Rain
-SHRA
30%
Light Showers Rain
-SHRA
30%
Light Showers Rain
-SHRA
30%
Showers Rain
SHRA
30%
Showers Rain
SHRA
30%
Clouds
BKN008
BKN008
BKN008
SCT018
SCT018
SCT018
SCT018
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
Ceiling
800ft
AGL
800ft
AGL
800ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules IFR IFR IFR VFR VFR VFR VFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR
Day/Night
☀️
Day
🌇 18:12
🌙
Night
🌇 18:12
🌙
Night
🌇 18:12
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:49
🌙
Night
🌅 05:49
🌙
Night
🌅 05:49
☀️
Day
🌅 05:49
☀️
Day
🌅 05:49
☀️
Day
☀️
Day
☀️
Day
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
220° at 14 kt
Visibility
10+ km
Clouds
BKN008
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southwest (220°) at 14kt. Visibility will be excellent at 10+ km. Broken clouds at 800 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

BECMG 2025-10-14 18:00:00 - 2025-09-14 21:00:00
VFR
Clouds
FEW008 BKN030
📖 Plain English Explanation:

Conditions will gradually change to become: Few clouds at 800 feet, Broken clouds at 3000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 2025-10-14 18:00:00 - 2025-09-15 01:00:00
VFR
Wind
230° at 16 kt
Gusts: 28 kt
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds from the Southwest (230°) at 16kt. Gusts up to 28kt are expected. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 2025-10-14 18:00:00 - 2025-09-14 22:00:00
MVFR
Visibility
6 km
Weather
RADZ, 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: RADZ, Showers Rain. Marginal VFR conditions - some restrictions for visual flying.

PROB40 TEMPO 2025-10-14 18:00:00 - 2025-09-14 21:00:00
IFR
Visibility
3 km
Weather
Heavy Showers Rain
📖 Plain English Explanation:

There is a 40% probability of: Visibility will be moderate at 3 km. Weather conditions: Heavy Showers Rain. Instrument Flight Rules (IFR) conditions - instrument flying required.

PROB30 TEMPO 2025-09-14 21:00:00 - 2025-09-15 08:00:00
VFR
Clouds
SCT018
📖 Plain English Explanation:

There is a 30% probability of: Scattered clouds at 1800 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 2025-09-15 01:00:00 - 2025-09-15 03:00:00
VFR
Wind
240° at 15 kt
Gusts: 25 kt
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the West-Southwest (240°) at 15kt. Gusts up to 25kt are expected. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 TEMPO 2025-09-15 01:00:00 - 2025-09-15 09:00:00
MVFR
Visibility
7 km
Weather
Light Showers Rain
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be good at 7 km. Weather conditions: Light Showers Rain. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 2025-09-15 06:00:00 - 2025-09-15 12:00:00
VFR
Wind
250° at 20 kt
Gusts: 36 kt
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds from the West-Southwest (250°) at 20kt. Gusts up to 36kt are expected. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 TEMPO 2025-09-15 09:00:00 - 2025-09-15 12:00:00
MVFR
Visibility
5 km
Weather
Showers Rain
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be good at 5 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.