Osan Air Base

RKSO / OSN

Pyeongtaek, KR

Current TAF Forecast

Raw TAF:
TAF RKSO 040500Z 0405/0511 31012KT 9999 SKC QNH3022INS BECMG 0408/0409 VRB06KT 9999 SKC QNH3021INS BECMG 0504/0505 24007KT 9999 SCT130 QNH3023INS BECMG 0507/0508 27009KT 9999 OVC090 620901 QNH3015INS BECMG 0509/0510 29009KT 9000 -SHRA OVC027 610277 QNH3014INS BECMG 0510/0511 29009KT 8000 -SHRA OVC018 610188 QNH3015INS TX12/0407Z TNM01/0421Z

Detailed TAF Table

Parameter
Wed
12:00Z
+-1h
Wed
13:00Z
+0h
Wed
14:00Z
+1h
Wed
15:00Z
+2h
Wed
16:00Z
+3h
Wed
17:00Z
+4h
Wed
18:00Z
+5h
Wed
19:00Z
+6h
Wed
20:00Z
+7h
Wed
21:00Z
+8h
Wed
22:00Z
+9h
Wed
23:00Z
+10h
Thu
00:00Z
+11h
Thu
01:00Z
+12h
Thu
02:00Z
+13h
Thu
03:00Z
+14h
Thu
04:00Z
+15h
Thu
05:00Z
+16h
Thu
06:00Z
+17h
Thu
07:00Z
+18h
Thu
08:00Z
+19h
Thu
09:00Z
+20h
Wind Dir
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
240°
SW
240°
SW
240°
SW
270°
W
270°
W
290°
W
Wind Speed
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
7 kt
7 kt
7 kt
9 kt
9 kt
9 kt
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
10+ km
10+ km
10+ km
10+ km
9 km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Light Showers Rain
-SHRA
Clouds
CLR
CLR
CLR
CLR
CLR
CLR
CLR
CLR
CLR
CLR
CLR
CLR
CLR
CLR
CLR
CLR
SCT130
SCT130
SCT130
OVC090
OVC090
OVC027
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
9,000 ft
AGL
9,000 ft
AGL
2,700 ft
AGL
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR MVFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 17:36Z
☀️
Day
🌇 17:36Z
☀️
Day
🌇 17:36Z
🌇
Dusk
🌇 17:36Z
🌙
Night
🌇 17:36Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 06:22Z
🌙
Night
🌅 06:22Z
🌅
Dawn
🌅 06:22Z
☀️
Day
🌅 06:22Z
☀️
Day
🌅 06:22Z
☀️
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
VFR
Wind
310° at 12 kt
Visibility
10+ km
Clouds
CLR
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Northwest (310°) at 12 kt. Visibility will be excellent at 10+ km. Skies will be clear. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 08:00Z - 09:00Z
VFR
Wind
VRB° at 6 kt
Visibility
10+ km
Clouds
CLR
📖 Plain English Explanation:

Conditions will gradually change to become: Winds will be variable in direction at 6 kt. Visibility will be excellent at 10+ km. Skies will be clear. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 04:00Z - 05:00Z
VFR
Wind
240° at 7 kt
Visibility
10+ km
Clouds
SCT130
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the West-Southwest (240°) at 7 kt. Visibility will be excellent at 10+ km. Scattered clouds at 13000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 07:00Z - 08:00Z
VFR
Wind
270° at 9 kt
Visibility
10+ km
Clouds
OVC090
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the West (270°) at 9 kt. Visibility will be excellent at 10+ km. Overcast skies at 9000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 09:00Z - 10:00Z
MVFR
Wind
290° at 9 kt
Visibility
9 km
Weather
Light Showers Rain
Clouds
OVC027
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the West-Northwest (290°) at 9 kt. Visibility will be good at 9 km. Weather conditions: Light Showers Rain. Overcast skies at 2700 feet. Marginal VFR conditions - some restrictions for visual flying.

BECMG 10:00Z - 11:00Z
MVFR
Wind
290° at 9 kt
Visibility
8 km
Weather
Light Showers Rain
Clouds
OVC018
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the West-Northwest (290°) at 9 kt. Visibility will be good at 8 km. Weather conditions: Light Showers Rain. Overcast skies at 1800 feet. 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.