Sankt Gallen Altenrhein Airport

LSZR / ACH

St. Gallen, CH

Current TAF Forecast

Raw TAF:
TAF LSZR 171425Z 1715/1724 VRB02KT 8000 SCT007 BECMG 1717/1720 4000 BR BKN007 PROB40 1719/1724 2000 BCFG BKN004

Detailed TAF Table

Parameter
Sun
00:00Z
+-1h
Sun
01:00Z
+0h
Sun
02:00Z
+1h
Sun
03:00Z
+2h
Sun
04:00Z
+3h
Sun
05:00Z
+4h
Sun
06:00Z
+5h
Sun
07:00Z
+6h
Sun
08:00Z
+7h
Sun
09:00Z
+8h
Sun
10:00Z
+9h
Sun
11:00Z
+10h
Sun
12:00Z
+11h
Sun
13:00Z
+12h
Sun
14:00Z
+13h
Sun
15:00Z
+14h
Sun
16:00Z
+15h
Sun
17:00Z
+16h
Sun
18:00Z
+17h
Sun
19:00Z
+18h
Sun
20:00Z
+19h
Sun
21:00Z
+20h
Sun
22:00Z
+21h
Sun
23:00Z
+22h
Mon
00:00Z
+23h
Mon
01:00Z
+24h
Mon
02:00Z
+25h
Mon
03:00Z
+26h
Mon
04:00Z
+27h
Mon
05:00Z
+28h
Mon
06:00Z
+29h
Mon
07:00Z
+30h
Mon
08:00Z
+31h
Mon
09:00Z
+32h
Mon
10:00Z
+33h
Mon
11:00Z
+34h
Mon
12:00Z
+35h
Mon
13:00Z
+36h
Mon
14:00Z
+37h
Mon
15:00Z
+38h
Mon
16:00Z
+39h
Mon
17:00Z
+40h
Mon
18:00Z
+41h
Mon
19:00Z
+42h
Mon
20:00Z
+43h
Mon
21:00Z
+44h
Mon
22:00Z
+45h
Wind Dir
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
Wind Speed
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
2kt
Visibility
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 km
8 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
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
SCT007
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR
Day/Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 07:18
🌙
Night
🌅 07:18
🌅
Dawn
🌅 07:18
☀️
Day
🌅 07:18
☀️
Day
🌅 07:18
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 16:41
☀️
Day
🌇 16:41
☀️
Day
🌇 16:41
🌇
Dusk
🌇 16:41
🌙
Night
🌇 16:41
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 07:18
🌙
Night
🌅 07:18
🌅
Dawn
🌅 07:18
☀️
Day
🌅 07:18
☀️
Day
🌅 07:18
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 16:41
☀️
Day
🌇 16:41
☀️
Day
🌇 16:41
🌇
Dusk
🌇 16:41
🌙
Night
🌇 16:41
🌙
Night
🌙
Night
🌙
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
MVFR
Wind
VRB° at 2 kt
Visibility
8 km
Clouds
SCT007
📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 2kt. Visibility will be good at 8 km. Scattered clouds at 700 feet. Marginal VFR conditions - some restrictions for visual flying.

BECMG 2026-02-17 17:00:00 - 2026-02-17 20:00:00
IFR
Visibility
4 km
Weather
Mist
Clouds
BKN007
📖 Plain English Explanation:

Conditions will gradually change to become: Visibility will be moderate at 4 km. Weather conditions: Mist. Broken clouds at 700 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

PROB40 2026-02-17 19:00:00 - 2026-02-18 00:00:00
LIFR
Visibility
2 km
Weather
Patches Fog
Clouds
BKN004
📖 Plain English Explanation:

There is a 40% probability of: Visibility will be moderate at 2 km. Weather conditions: Patches Fog. Broken clouds at 400 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.