Tainan International Airport / Tainan Air Base

RCNN / TNN

Tainan (Rende), TW

Current TAF Forecast

Raw TAF:
TAF RCNN 042300Z 0500/0524 10004KT 9999 FEW012 SCT040 TX33/0505Z TN27/0520Z BECMG 0501/0504 24012KT FEW012 TEMPO 0506/0511 FEW012 SCT060 BECMG 0513/0516 18004KT TEMPO 0518/0523 FEW012 SCT060

Detailed TAF Table

Parameter
Sun
04:00Z
+-1h
Sun
05:00Z
+0h
Sun
06:00Z
+1h
Sun
07:00Z
+2h
Sun
08:00Z
+3h
Sun
09:00Z
+4h
Sun
10:00Z
+5h
Sun
11:00Z
+6h
Sun
12:00Z
+7h
Sun
13:00Z
+8h
Sun
14:00Z
+9h
Sun
15:00Z
+10h
Sun
16:00Z
+11h
Sun
17:00Z
+12h
Sun
18:00Z
+13h
Sun
19:00Z
+14h
Sun
20:00Z
+15h
Sun
21:00Z
+16h
Sun
22:00Z
+17h
Wind Dir
100°
E
100°
E
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
100°
E
100°
E
180°
S
180°
S
180°
S
180°
S
180°
S
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
Wind Speed
4 kt
4 kt
12 kt
12 kt
12 kt
12 kt
12 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
12 kt
12 kt
12 kt
12 kt
12 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
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
FEW012
SCT040
FEW012
SCT040
FEW012
SCT060
FEW012
SCT060
FEW012
SCT060
FEW012
SCT060
FEW012
SCT060
FEW012
SCT040
FEW012
SCT040
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
FEW012
SCT060
FEW012
SCT060
FEW012
SCT060
FEW012
SCT060
FEW012
SCT060
Ceiling
🌤️ 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 VFR VFR VFR
Day/Night
🌙
Night
🌅 05:14Z
🌅
Dawn
🌅 05:14Z
☀️
Day
🌅 05:14Z
☀️
Day
🌅 05:14Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:45Z
☀️
Day
🌇 18:45Z
☀️
Day
🌇 18:45Z
🌇
Dusk
🌇 18:45Z
🌙
Night
🌇 18:45Z
🌙
Night
🌙
Night
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
100° at 4 kt
Visibility
10+ km
Clouds
FEW012 SCT040
📖 Plain English Explanation:

This is the base forecast condition. Winds from the East (100°) at 4 kt. Visibility will be excellent at 10+ km. Few clouds at 1200 feet, Scattered clouds at 4000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 01:00Z - 04:00Z
VFR
Wind
240° at 12 kt
Clouds
FEW012
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the West-Southwest (240°) at 12 kt. Few clouds at 1200 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 06:00Z - 11:00Z
VFR
Clouds
FEW012 SCT060
📖 Plain English Explanation:

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

BECMG 13:00Z - 16:00Z
VFR
Wind
180° at 4 kt
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the South (180°) at 4 kt. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 18:00Z - 23:00Z
VFR
Clouds
FEW012 SCT060
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Few clouds at 1200 feet, Scattered clouds at 6000 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.