Seinäjoki Airport

EFSI / SJY

Seinäjoki / Ilmajoki, FI

Current TAF Forecast

Raw TAF:
TAF EFSI 041124Z 0412/0421 25010KT 9999 BKN020 TEMPO 0412/0415 27015G25KT 4000 -SHRASN BKN008 FEW040CB TEMPO 0415/0417 BKN013 BECMG 0415/0417 32012KT

Detailed TAF Table

Parameter
Wed
13:00Z
+-1h
Wed
14:00Z
+0h
Wed
15:00Z
+1h
Wed
16:00Z
+2h
Wed
17:00Z
+3h
Wed
18:00Z
+4h
Wed
19:00Z
+5h
Wind Dir
250°
W
250°
W
320°
NW
320°
NW
320°
NW
320°
NW
320°
NW
Wind Speed
10 kt
10 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
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
BKN020
BKN020
BKN013
BKN013
☀️ CLR
☀️ CLR
☀️ CLR
Ceiling
2,000 ft
AGL
2,000 ft
AGL
1,300 ft
AGL
1,300 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules MVFR MVFR MVFR MVFR VFR VFR VFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
🌇 17:25Z
☀️
Day
🌇 17:25Z
☀️
Day
🌇 17:25Z
🌙
Night
🌇 17:25Z
🌙
Night
🌇 17:25Z
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
250° at 10 kt
Visibility
10+ km
Clouds
BKN020
📖 Plain English Explanation:

This is the base forecast condition. Winds from the West-Southwest (250°) at 10 kt. Visibility will be excellent at 10+ km. Broken clouds at 2000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 12:00Z - 15:00Z
LIFR
Wind
270° at 15 kt
Gusts: 25 kt
Visibility
4 km
Weather
Light Showers RASN
Clouds
BKN008 FEW040CB
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds from the West (270°) at 15 kt. Gusts up to 25 kt are expected. Visibility will be moderate at 4 km. Weather conditions: Light Showers RASN. Broken clouds at 800 feet, Few clouds at 4000 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 15:00Z - 17:00Z
MVFR
Clouds
BKN013
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Broken clouds at 1300 feet. Marginal VFR conditions - some restrictions for visual flying.

BECMG 15:00Z - 17:00Z
VFR
Wind
320° at 12 kt
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the Northwest (320°) at 12 kt. 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.