Tainan International Airport / Tainan Air Base

RCNN / TNN

Tainan (Rende), TW

Current TAF Forecast

Raw TAF:
TAF RCNN 141100Z 1412/1512 04004KT 9999 FEW012 SCT030 BKN080 TX34/1505Z TN26/1420Z BECMG 1413/1415 FEW012 SCT060 TEMPO 1418/1423 FEW012 SCT025 BKN060 BECMG 1501/1504 32010KT TEMPO 1505/1510 6000 -RA FEW010 FEW012CB BKN030 BKN050

Detailed TAF Table

Parameter
Sun
16:00Z
+-1h
Sun
17:00Z
+0h
Sun
18:00Z
+1h
Sun
19:00Z
+2h
Sun
20:00Z
+3h
Sun
21:00Z
+4h
Sun
22:00Z
+5h
Sun
23:00Z
+6h
Mon
00:00Z
+7h
Mon
01:00Z
+8h
Mon
02:00Z
+9h
Mon
03:00Z
+10h
Mon
04:00Z
+11h
Mon
05:00Z
+12h
Mon
06:00Z
+13h
Mon
07:00Z
+14h
Mon
08:00Z
+15h
Mon
09:00Z
+16h
Mon
10:00Z
+17h
Wind Dir
40°
NE
40°
NE
320°
NW
320°
NW
320°
NW
320°
NW
320°
NW
40°
NE
40°
NE
320°
NW
320°
NW
320°
NW
320°
NW
320°
NW
320°
NW
320°
NW
320°
NW
320°
NW
320°
NW
Wind Speed
4kt
4kt
10kt
10kt
10kt
10kt
10kt
4kt
4kt
10kt
10kt
10kt
10kt
10kt
10kt
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
10+ km
6 km
6 km
6 km
6 km
6 km
10+ km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Light Rain
-RA
Light Rain
-RA
Light Rain
-RA
Light Rain
-RA
Light Rain
-RA
☀️ Clear
Clouds
FEW012
SCT030
FEW012
SCT030
FEW012
SCT025
FEW012
SCT025
FEW012
SCT025
FEW012
SCT025
FEW012
SCT025
FEW012
SCT030
FEW012
SCT030
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
FEW010
FEW012CB
FEW010
FEW012CB
FEW010
FEW012CB
FEW010
FEW012CB
FEW010
FEW012CB
☀️ CLR
Ceiling
8000ft
AGL
8000ft
AGL
6000ft
AGL
6000ft
AGL
6000ft
AGL
6000ft
AGL
6000ft
AGL
8000ft
AGL
8000ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
3000ft
AGL
3000ft
AGL
3000ft
AGL
3000ft
AGL
3000ft
AGL
🌤️ Unlimited
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR IFR IFR IFR IFR IFR VFR
Day/Night
☀️
Day
🌇 18:06
☀️
Day
🌇 18:06
☀️
Day
🌇 18:06
🌙
Night
🌇 18:06
🌙
Night
🌇 18:06
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:54
🌙
Night
🌅 05:54
🌙
Night
🌅 05:54
☀️
Day
🌅 05:54
☀️
Day
🌅 05:54
☀️
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 occurrenceAGL: Above Ground Level

Forecast Periods

BASE
VFR
Wind
40° at 4 kt
Visibility
10+ km
Clouds
FEW012 SCT030 BKN080
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Northeast (40°) at 4kt. Visibility will be excellent at 10+ km. Few clouds at 1200 feet, Scattered clouds at 3000 feet, Broken clouds at 8000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 2025-10-14 13:00:00 - 2025-10-14 15:00:00
VFR
Clouds
FEW012 SCT060
📖 Plain English Explanation:

Conditions will gradually change to become: Few clouds at 1200 feet, Scattered clouds at 6000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 2025-09-14 18:00:00 - 2025-09-14 23:00:00
VFR
Clouds
FEW012 SCT025 BKN060
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Few clouds at 1200 feet, Scattered clouds at 2500 feet, Broken clouds at 6000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 2025-09-15 01:00:00 - 2025-09-15 04:00:00
VFR
Wind
320° at 10 kt
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the Northwest (320°) at 10kt. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 2025-09-15 05:00:00 - 2025-09-15 10:00:00
IFR
Visibility
6 km
Weather
Light Rain
Clouds
FEW010 FEW012CB BKN030 BKN050
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be good at 6 km. Weather conditions: Light Rain. Few clouds at 1000 feet, Few clouds at 1200 feet, Broken clouds at 3000 feet, Broken clouds at 5000 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.