Iwakuni Kintaikyo Airport / Marine Corps Air Station Iwakuni

RJOI / IWK

Iwakuni, JP

Current TAF Forecast

Raw TAF:
TAF COR RJOI 0305/0405 03015G20KT 9999 FEW020 SCT040 QNH3022INS FM031300 04010G15KT 9999 FEW020 QNH3032INS FM031800 04007KT 9999 FEW020 SCT040 QNH3034INS FM040000 06007G15KT 9999 FEW020 QNH3029INS T20/0314Z T11/0321Z COR 0508

Detailed TAF Table

Parameter
Mon
08:00Z
+-1h
Mon
09:00Z
+0h
Mon
10:00Z
+1h
Mon
11:00Z
+2h
Mon
12:00Z
+3h
Mon
13:00Z
+4h
Mon
14:00Z
+5h
Mon
15:00Z
+6h
Mon
16:00Z
+7h
Mon
17:00Z
+8h
Mon
18:00Z
+9h
Mon
19:00Z
+10h
Mon
20:00Z
+11h
Mon
21:00Z
+12h
Mon
22:00Z
+13h
Mon
23:00Z
+14h
Tue
00:00Z
+15h
Tue
01:00Z
+16h
Tue
02:00Z
+17h
Tue
03:00Z
+18h
Tue
04:00Z
+19h
Wind Dir
30°
NE
30°
NE
30°
NE
30°
NE
30°
NE
40°
NE
40°
NE
40°
NE
40°
NE
40°
NE
40°
NE
40°
NE
40°
NE
40°
NE
40°
NE
40°
NE
60°
NE
60°
NE
60°
NE
60°
NE
60°
NE
Wind Speed
15kt
G20kt
15kt
G20kt
15kt
G20kt
15kt
G20kt
15kt
G20kt
10kt
G15kt
10kt
G15kt
10kt
G15kt
10kt
G15kt
10kt
G15kt
7kt
G20kt
7kt
G20kt
7kt
G20kt
7kt
G20kt
7kt
G20kt
7kt
G20kt
7kt
G15kt
7kt
G15kt
7kt
G15kt
7kt
G15kt
7kt
G15kt
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
0.508 km
0.508 km
0.508 km
0.508 km
0.508 km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
FEW020
SCT040
FEW020
SCT040
FEW020
SCT040
FEW020
SCT040
FEW020
SCT040
FEW020
FEW020
FEW020
FEW020
FEW020
FEW020
SCT040
FEW020
SCT040
FEW020
SCT040
FEW020
SCT040
FEW020
SCT040
FEW020
SCT040
FEW020
FEW020
FEW020
FEW020
FEW020
Ceiling
🌤️ 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 VFR VFR VFR LIFR LIFR LIFR LIFR LIFR
Day/Night
☀️
Day
🌅 06:44
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 17:15
☀️
Day
🌇 17:15
☀️
Day
🌇 17:15
🌙
Night
🌇 17:15
🌙
Night
🌇 17:15
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 06:45
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
30° at 15 kt
Gusts: 20 kt
Visibility
10+ km
Clouds
FEW020 SCT040
📖 Plain English Explanation:

This is the base forecast condition. Winds from the North-Northeast (30°) at 15kt. Gusts up to 20kt are expected. Visibility will be excellent at 10+ km. Few clouds at 2000 feet, Scattered clouds at 4000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM031300 2025-11-03 13:00:00 - 2025-11-03 19:00:00
VFR
Wind
40° at 10 kt
Gusts: 15 kt
Visibility
10+ km
Clouds
FEW020
📖 Plain English Explanation:

Winds from the Northeast (40°) at 10kt. Gusts up to 15kt are expected. Visibility will be excellent at 10+ km. Few clouds at 2000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM031800 2025-11-03 18:00:00 - 2025-11-04 00:00:00
VFR
Wind
40° at 7 kt
Visibility
10+ km
Clouds
FEW020 SCT040
📖 Plain English Explanation:

Winds from the Northeast (40°) at 7kt. Visibility will be excellent at 10+ km. Few clouds at 2000 feet, Scattered clouds at 4000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM040000 2025-11-04 00:00:00 - 2025-11-04 06:00:00
LIFR
Wind
60° at 7 kt
Gusts: 15 kt
Visibility
0.508 km
Clouds
FEW020
📖 Plain English Explanation:

Winds from the East-Northeast (60°) at 7kt. Gusts up to 15kt are expected. Visibility will be poor at 0.508 km. Few clouds at 2000 feet. Low IFR conditions - challenging even for instrument 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.