Tainan International Airport / Tainan Air Base

RCNN / TNN

Tainan (Rende), TW

Current TAF Forecast

Raw TAF:
TAF RCNN 040500Z 0406/0506 32008KT 9999 FEW012 BKN120 TX31/0505Z TN22/0420Z TEMPO 0407/0411 FEW012 SCT120 BECMG 0412/0415 02004KT FEW012 SCT050 BKN080 TEMPO 0418/0423 8000 FEW012 SCT080 BECMG 0501/0504 36010KT FEW012 SCT080

Detailed TAF Table

Parameter
Tue
06:00Z
+-1h
Tue
07:00Z
+0h
Tue
08:00Z
+1h
Tue
09:00Z
+2h
Tue
10:00Z
+3h
Tue
11:00Z
+4h
Tue
12:00Z
+5h
Tue
13:00Z
+6h
Tue
14:00Z
+7h
Tue
15:00Z
+8h
Tue
16:00Z
+9h
Tue
17:00Z
+10h
Tue
18:00Z
+11h
Tue
19:00Z
+12h
Tue
20:00Z
+13h
Tue
21:00Z
+14h
Tue
22:00Z
+15h
Tue
23:00Z
+16h
Wed
00:00Z
+17h
Wed
01:00Z
+18h
Wed
02:00Z
+19h
Wed
03:00Z
+20h
Wed
04:00Z
+21h
Wind Dir
320°
NW
360°
N
360°
N
360°
N
360°
N
320°
NW
20°
N
20°
N
20°
N
20°
N
20°
N
20°
N
360°
N
360°
N
360°
N
360°
N
360°
N
20°
N
20°
N
360°
N
360°
N
360°
N
360°
N
Wind Speed
8kt
10kt
10kt
10kt
10kt
8kt
4kt
4kt
4kt
4kt
4kt
4kt
10kt
10kt
10kt
10kt
10kt
4kt
4kt
10kt
10kt
10kt
10kt
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
8 km
8 km
8 km
8 km
8 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
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
FEW012
BKN120
FEW012
SCT120
FEW012
SCT120
FEW012
SCT120
FEW012
SCT120
FEW012
BKN120
FEW012
SCT050
FEW012
SCT050
FEW012
SCT050
FEW012
SCT050
FEW012
SCT050
FEW012
SCT050
FEW012
SCT080
FEW012
SCT080
FEW012
SCT080
FEW012
SCT080
FEW012
SCT080
FEW012
SCT050
FEW012
SCT050
FEW012
SCT080
FEW012
SCT080
FEW012
SCT080
FEW012
SCT080
Ceiling
12000ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
12000ft
AGL
8000ft
AGL
8000ft
AGL
8000ft
AGL
8000ft
AGL
8000ft
AGL
8000ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
8000ft
AGL
8000ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR MVFR MVFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR
Day/Night
🌙
Night
🌅 06:31
☀️
Day
🌅 06:31
☀️
Day
🌅 06:31
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 17:28
☀️
Day
🌇 17:28
☀️
Day
🌇 17:28
🌙
Night
🌇 17:28
🌙
Night
🌇 17:28
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 06:32
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
320° at 8 kt
Visibility
10+ km
Clouds
FEW012 BKN120
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Northwest (320°) at 8kt. Visibility will be excellent at 10+ km. Few clouds at 1200 feet, Broken clouds at 12000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 2025-11-04 07:00:00 - 2025-11-04 11:00:00
VFR
Clouds
FEW012 SCT120
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Few clouds at 1200 feet, Scattered clouds at 12000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 2025-11-04 12:00:00 - 2025-11-04 15:00:00
VFR
Wind
20° at 4 kt
Clouds
FEW012 SCT050 BKN080
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the North-Northeast (20°) at 4kt. Few clouds at 1200 feet, Scattered clouds at 5000 feet, Broken clouds at 8000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 2025-11-04 18:00:00 - 2025-11-04 23:00:00
MVFR
Visibility
8 km
Clouds
FEW012 SCT080
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be good at 8 km. Few clouds at 1200 feet, Scattered clouds at 8000 feet. Marginal VFR conditions - some restrictions for visual flying.

BECMG 2025-11-05 01:00:00 - 2025-11-05 04:00:00
VFR
Wind
360° at 10 kt
Clouds
FEW012 SCT080
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the North (360°) at 10kt. Few clouds at 1200 feet, Scattered clouds at 8000 feet. 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.