Seinäjoki Airport

EFSI / SJY

Seinäjoki / Ilmajoki, FI

Current TAF Forecast

Raw TAF:
TAF EFSI 141437Z 1415/1424 11007KT 9999 FEW020 BECMG 1417/1419 BKN008 TEMPO 1420/1422 2500 -DZ BKN003 BECMG 1422/1424 0500 FG VV002

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
Wind Dir
110°
E
110°
E
110°
E
110°
E
110°
E
110°
E
110°
E
Wind Speed
7kt
7kt
7kt
7kt
7kt
7kt
7kt
Visibility
10+ km
10+ km
10+ km
10+ km
2.5 km
2.5 km
0.5 km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Light Drizzle
-DZ
Light Drizzle
-DZ
Fog
FG
Clouds
FEW020
BKN008
BKN008
BKN008
BKN003
BKN003
VV002
Ceiling
🌤️ Unlimited
800ft
AGL
800ft
AGL
800ft
AGL
300ft
AGL
300ft
AGL
200ft 🌫️
Indefinite
Flight Rules VFR IFR IFR IFR LIFR LIFR LIFR
Day/Night
☀️
Day
🌇 18:13
☀️
Day
🌇 18:13
☀️
Day
🌇 18:13
🌙
Night
🌇 18:13
🌙
Night
🌇 18:13
🌙
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
110° at 7 kt
Visibility
10+ km
Clouds
FEW020
📖 Plain English Explanation:

This is the base forecast condition. Winds from the East-Southeast (110°) at 7kt. Visibility will be excellent at 10+ km. Few clouds at 2000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 2025-09-14 17:00:00 - 2025-09-14 19:00:00
IFR
Clouds
BKN008
📖 Plain English Explanation:

Conditions will gradually change to become: Broken clouds at 800 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

TEMPO 2025-09-14 20:00:00 - 2025-09-14 22:00:00
LIFR
Visibility
2.5 km
Weather
Light Drizzle
Clouds
BKN003
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 2.5 km. Weather conditions: Light Drizzle. Broken clouds at 300 feet. Low IFR conditions - challenging even for instrument operations.

BECMG 2025-09-14 22:00:00 - 2025-09-15 00:00:00
LIFR
Visibility
0.5 km
Weather
Fog
Clouds
VV002
📖 Plain English Explanation:

Conditions will gradually change to become: Visibility will be poor at 0.5 km. Weather conditions: Fog. Vertical visibility at 200 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.