JP
RJOI
TAF Forecast

Iwakuni Kintaikyo Airport / Marine Corps Air Station Iwakuni

RJOI / IWK

Iwakuni, JP

Current TAF Forecast

Raw TAF:

TAF RJOI 040400Z 0405/0511 VRB06KT 4800 -SHRA BR SCT005 BKN020 OVC040 621509 QNH2973INS TEMPO 0405/0411 2400 SHRA BR BKN012 FM041100 27006KT 9999 SCT012 SCT020 BKN040 621509 QNH2974INS TEMPO 0411/0417 8000 -SHRA BR BKN020 FM041700 VRB06KT 6000 -SHRA BR BKN020 BKN060 621509 QNH2973INS FM050300 14006KT 4800 SHRA BR SCT005 BKN015 OVC050 621509 QNH2972INS FM050900 VRB06KT 3200 SHRA BR SCT005 BKN010 OVC040 621509 QNH2972INS TX24/0505Z TN21/0405Z

Detailed TAF Table

Parameter	Sat 07:00Z +-1h	Sat 08:00Z +0h	Sat 09:00Z +1h	Sat 10:00Z +2h	Sat 11:00Z +3h	Sat 12:00Z +4h	Sat 13:00Z +5h	Sat 14:00Z +6h	Sat 15:00Z +7h	Sat 16:00Z +8h	Sat 17:00Z +9h	Sat 18:00Z +10h	Sat 19:00Z +11h	Sat 20:00Z +12h	Sat 21:00Z +13h	Sat 22:00Z +14h	Sat 23:00Z +15h	Sun 00:00Z +16h	Sun 01:00Z +17h	Sun 02:00Z +18h	Sun 03:00Z +19h	Sun 04:00Z +20h	Sun 05:00Z +21h	Sun 06:00Z +22h	Sun 07:00Z +23h	Sun 08:00Z +24h	Sun 09:00Z +25h
Wind Dir	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	VRB	140° SE	140° SE	140° SE	140° SE	140° SE	140° SE	VRB
Wind Speed	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt	6 kt
Visibility	4.8 km	4.8 km	4.8 km	4.8 km	8 km	8 km	8 km	8 km	8 km	8 km	6 km	6 km	6 km	6 km	6 km	6 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
Weather	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Light Showers Rain, Mist -SHRA BR	Showers Rain, Mist SHRA BR	Showers Rain, Mist SHRA BR	Showers Rain, Mist SHRA BR	Showers Rain, Mist SHRA BR	Showers Rain, Mist SHRA BR	Showers Rain, Mist SHRA BR	Showers Rain, Mist SHRA BR
Clouds	SCT005 BKN020	SCT005 BKN020	SCT005 BKN020	SCT005 BKN020	BKN020	BKN020	BKN020	BKN020	BKN020	BKN020	BKN020 BKN060	BKN020 BKN060	BKN020 BKN060	BKN020 BKN060	BKN020 BKN060	BKN020 BKN060	SCT005 BKN020	SCT005 BKN020	SCT005 BKN020	SCT005 BKN020	SCT005 BKN015	SCT005 BKN015	SCT005 BKN015	SCT005 BKN015	SCT005 BKN015	SCT005 BKN015	SCT005 BKN010
Ceiling	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	2,000 ft AGL	1,500 ft AGL	1,500 ft AGL	1,500 ft AGL	1,500 ft AGL	1,500 ft AGL	1,500 ft AGL	1,000 ft AGL
Flight Rules	IFR	IFR	IFR	IFR	MVFR	MVFR	MVFR	MVFR	MVFR	MVFR	MVFR	MVFR	MVFR	MVFR	MVFR	MVFR	IFR	IFR	IFR	IFR	IFR	IFR	IFR	IFR	IFR	IFR	IFR
Day/Night	☀️ Day	☀️ Day	☀️ Day	☀️ Day	☀️ Day	☀️ Day	☀️ Day	☀️ Day	☀️ Day	☀️ Day	☀️ Day 🌇 19:06Z	☀️ Day 🌇 19:06Z	☀️ Day 🌇 19:06Z	🌙 Night 🌇 19:06Z	🌙 Night 🌇 19:06Z	🌙 Night	🌙 Night	🌙 Night	🌙 Night	🌙 Night 🌅 04:54Z	🌙 Night 🌅 04:54Z	🌙 Night 🌅 04:54Z	☀️ Day 🌅 04:54Z	☀️ Day 🌅 04:54Z	☀️ 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 occurrence • AGL: Above Ground Level

Forecast Periods

BASE

IFR

Wind

VRB° at 6 kt

Visibility

4.8 km

Weather

Light Showers Rain, Mist

Clouds

SCT005 BKN020 OVC040

📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 6 kt. Visibility will be moderate at 4.8 km. Weather conditions: Light Showers Rain, Mist. Scattered clouds at 500 feet, Broken clouds at 2000 feet, Overcast skies at 4000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

TEMPO 05:00Z - 11:00Z

IFR

Visibility

2.4 km

Weather

Showers Rain, Mist

Clouds

BKN012

📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 2.4 km. Weather conditions: Showers Rain, Mist. Broken clouds at 1200 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM041100 11:00Z - 17:00Z

VFR

Wind

270° at 6 kt

Visibility

10+ km

Clouds

SCT012 SCT020 BKN040

📖 Plain English Explanation:

Winds from the West (270°) at 6 kt. Visibility will be excellent at 10+ km. Scattered clouds at 1200 feet, Scattered clouds at 2000 feet, Broken clouds at 4000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 11:00Z - 17:00Z

MVFR

Visibility

8 km

Weather

Light Showers Rain, Mist

Clouds

BKN020

📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be good at 8 km. Weather conditions: Light Showers Rain, Mist. Broken clouds at 2000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM041700 17:00Z - 23:00Z

MVFR

Wind

VRB° at 6 kt

Visibility

6 km

Weather

Light Showers Rain, Mist

Clouds

BKN020 BKN060

📖 Plain English Explanation:

Winds will be variable in direction at 6 kt. Visibility will be good at 6 km. Weather conditions: Light Showers Rain, Mist. Broken clouds at 2000 feet, Broken clouds at 6000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM050300 03:00Z - 09:00Z

IFR

Wind

140° at 6 kt

Visibility

4.8 km

Weather

Showers Rain, Mist

Clouds

SCT005 BKN015 OVC050

📖 Plain English Explanation:

Winds from the Southeast (140°) at 6 kt. Visibility will be moderate at 4.8 km. Weather conditions: Showers Rain, Mist. Scattered clouds at 500 feet, Broken clouds at 1500 feet, Overcast skies at 5000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM050900 09:00Z - 15:00Z

IFR

Wind

VRB° at 6 kt

Visibility

3.2 km

Weather

Showers Rain, Mist

Clouds

SCT005 BKN010 OVC040

📖 Plain English Explanation:

Winds will be variable in direction at 6 kt. Visibility will be moderate at 3.2 km. Weather conditions: Showers Rain, Mist. Scattered clouds at 500 feet, Broken clouds at 1000 feet, Overcast skies at 4000 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.