JP
RJTY
TAF Forecast

Yokota Air Base

RJTY / OKO

Fussa, JP

Current TAF Forecast

Raw TAF:

TAF AMD RJTY 122125Z 1221/1403 VRB06KT 8000 BR SCT010 BKN020 QNH2983INS TEMPO 1221/1224 BKN005 OVC010 BECMG 1300/1302 VRB12G18KT 4800 TSRA BR BKN008 OVC010CB QNH2977INS TEMPO 1313/1318 3200 +RA BR BKN005 OVC010 BECMG 1322/1324 36009KT 8000 BR BKN008 OVC010 QNH2985INS TX28/1305Z TN24/1221Z

Detailed TAF Table

Parameter	Wed 22:00Z +-1h	Wed 23:00Z +0h	Thu 00:00Z +1h	Thu 01:00Z +2h	Thu 02:00Z +3h	Thu 03:00Z +4h	Thu 04:00Z +5h	Thu 05:00Z +6h	Thu 06:00Z +7h	Thu 07:00Z +8h	Thu 08:00Z +9h	Thu 09:00Z +10h	Thu 10:00Z +11h	Thu 11:00Z +12h	Thu 12:00Z +13h	Thu 13:00Z +14h	Thu 14:00Z +15h	Thu 15:00Z +16h	Thu 16:00Z +17h	Thu 17:00Z +18h	Thu 18:00Z +19h	Thu 19:00Z +20h	Thu 20:00Z +21h	Thu 21:00Z +22h	Thu 22:00Z +23h	Thu 23:00Z +24h	Fri 00:00Z +25h	Fri 01:00Z +26h
Wind Dir	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	360° N	360° N	360° N	360° N	360° N	VRB	VRB	VRB	VRB	360° N	360° N	360° N	360° N
Wind Speed	6 kt	6 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	9 kt G18 kt	9 kt G18 kt	9 kt G18 kt	9 kt G18 kt	9 kt G18 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	12 kt G18 kt	9 kt G18 kt	9 kt G18 kt	9 kt G18 kt	9 kt G18 kt
Visibility	8 km	8 km	4.8 km	4.8 km	4.8 km	4.8 km	4.8 km	4.8 km	4.8 km	4.8 km	4.8 km	4.8 km	4.8 km	4.8 km	4.8 km	3.2 km	3.2 km	3.2 km	3.2 km	3.2 km	4.8 km	4.8 km	4.8 km	4.8 km	8 km	8 km	8 km	8 km
Weather	Mist BR	Mist BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Heavy Rain, Mist +RA BR	Heavy Rain, Mist +RA BR	Heavy Rain, Mist +RA BR	Heavy Rain, Mist +RA BR	Heavy Rain, Mist +RA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Thunderstorm Rain, Mist TSRA BR	Mist BR	Mist BR	Mist BR	Mist BR
Clouds	SCT010 BKN020	SCT010 BKN020	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN005 OVC010	BKN005 OVC010	BKN005 OVC010	BKN005 OVC010	BKN005 OVC010	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010CB	BKN008 OVC010	BKN008 OVC010	BKN008 OVC010	BKN008 OVC010
Ceiling	2,000 ft AGL	2,000 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	500 ft AGL	500 ft AGL	500 ft AGL	500 ft AGL	500 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL	800 ft AGL
Flight Rules	MVFR	MVFR	LIFR	LIFR	LIFR	LIFR	LIFR	LIFR	LIFR	LIFR	LIFR	LIFR	LIFR	LIFR	LIFR	IFR	IFR	IFR	IFR	IFR	LIFR	LIFR	LIFR	LIFR	IFR	IFR	IFR	IFR
Day/Night	🌙 Night	🌙 Night	🌙 Night	🌙 Night	🌙 Night	🌙 Night 🌅 05:15Z	🌙 Night 🌅 05:15Z	🌅 Dawn 🌅 05:15Z	☀️ Day 🌅 05:15Z	☀️ Day 🌅 05:15Z	☀️ Day	☀️ Day	☀️ Day	☀️ Day	☀️ Day	☀️ Day	☀️ Day	☀️ Day	☀️ Day 🌇 18:44Z	☀️ Day 🌇 18:44Z	☀️ Day 🌇 18:44Z	🌇 Dusk 🌇 18:44Z	🌙 Night 🌇 18:44Z	🌙 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 occurrence • AGL: Above Ground Level

Forecast Periods

BASE

MVFR

Wind

VRB° at 6 kt

Visibility

8 km

Weather

Mist

Clouds

SCT010 BKN020

📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 6 kt. Visibility will be good at 8 km. Weather conditions: Mist. Scattered clouds at 1000 feet, Broken clouds at 2000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 21:00Z - 00:00Z

IFR

Clouds

BKN005 OVC010

📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Broken clouds at 500 feet, Overcast skies at 1000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

BECMG 00:00Z - 02:00Z

LIFR

Wind

VRB° at 12 kt

Gusts: 18 kt

Visibility

4.8 km

Weather

Thunderstorm Rain, Mist

Clouds

BKN008 OVC010CB

📖 Plain English Explanation:

Conditions will gradually change to become: Winds will be variable in direction at 12 kt. Gusts up to 18 kt are expected. Visibility will be moderate at 4.8 km. Weather conditions: Thunderstorm Rain, Mist. Broken clouds at 800 feet, Overcast skies at 1000 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 13:00Z - 18:00Z

IFR

Visibility

3.2 km

Weather

Heavy Rain, Mist

Clouds

BKN005 OVC010

📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 3.2 km. Weather conditions: Heavy Rain, Mist. Broken clouds at 500 feet, Overcast skies at 1000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

BECMG 22:00Z - 00:00Z

IFR

Wind

360° at 9 kt

Visibility

8 km

Weather

Mist

Clouds

BKN008 OVC010

📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the North (360°) at 9 kt. Visibility will be good at 8 km. Weather conditions: Mist. Broken clouds at 800 feet, Overcast skies at 1000 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.