RAF Northolt

EGWU / NHT

London, GB

Current TAF Forecast

Raw TAF:
TAF EGWU 030739Z 0309/0403 22012KT 9999 FEW020 SCT048 TEMPO 0309/0315 BKN020 TEMPO 0309/0318 23016G26KT PROB40 TEMPO 0309/0313 7000 RA BKN010 PROB40 TEMPO 0315/0403 BKN018 PROB30 TEMPO 0318/0324 23015G25KT

Detailed TAF Table

Parameter
Mon
09:00Z
+-1h
Mon
10:00Z
+0h
Mon
11:00Z
+1h
Mon
12:00Z
+2h
Mon
13:00Z
+3h
Mon
14:00Z
+4h
Mon
15:00Z
+5h
Mon
16:00Z
+6h
Mon
17:00Z
+7h
Mon
18:00Z
+8h
Mon
19:00Z
+9h
Mon
20:00Z
+10h
Mon
21:00Z
+11h
Mon
22:00Z
+12h
Mon
23:00Z
+13h
Tue
00:00Z
+14h
Tue
01:00Z
+15h
Wind Dir
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
220°
SW
220°
SW
Wind Speed
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
15kt
G25kt
12kt
12kt
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
10+ km
10+ km
10+ km
10+ km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
FEW020
SCT048
FEW020
SCT048
FEW020
SCT048
FEW020
SCT048
FEW020
SCT048
FEW020
SCT048
BKN018
BKN018
BKN018
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
BKN018
BKN018
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
1800ft
AGL
1800ft
AGL
1800ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
1800ft
AGL
1800ft
AGL
Flight Rules VFR VFR VFR VFR VFR VFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR MVFR MVFR
Day/Night
☀️
Day
🌅 07:02
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 16:57
☀️
Day
🌇 16:57
☀️
Day
🌇 16:57
🌇
Dusk
🌇 16:57
🌙
Night
🌇 16:57
🌙
Night
🌙
Night
🌙
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
VFR
Wind
220° at 12 kt
Visibility
10+ km
Clouds
FEW020 SCT048
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southwest (220°) at 12kt. Visibility will be excellent at 10+ km. Few clouds at 2000 feet, Scattered clouds at 4800 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 2025-12-03 09:00:00 - 2025-11-03 15:00:00
MVFR
Clouds
BKN020
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Broken clouds at 2000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 2025-12-03 09:00:00 - 2025-11-03 18:00:00
VFR
Wind
230° at 16 kt
Gusts: 26 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 26kt are expected. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB40 TEMPO 2025-12-03 09:00:00 - 2025-11-03 13:00:00
IFR
Visibility
7 km
Weather
Rain
Clouds
BKN010
📖 Plain English Explanation:

There is a 40% probability of: Visibility will be good at 7 km. Weather conditions: Rain. Broken clouds at 1000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

PROB40 TEMPO 2025-11-03 15:00:00 - 2025-11-04 03:00:00
MVFR
Clouds
BKN018
📖 Plain English Explanation:

There is a 40% probability of: Broken clouds at 1800 feet. Marginal VFR conditions - some restrictions for visual flying.

PROB30 TEMPO 2025-11-03 18:00:00 - 2025-11-04 00:00:00
VFR
Wind
230° at 15 kt
Gusts: 25 kt
📖 Plain English Explanation:

There is a 30% probability of: Winds from the Southwest (230°) at 15kt. Gusts up to 25kt are expected. Conditions will be suitable for Visual Flight Rules (VFR) 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.