Halli Airport

EFHA / KEV

Jämsä, FI

Current TAF Forecast

Raw TAF:
TAF EFHA 040529Z 0406/0415 26010KT CAVOK TEMPO 0408/0415 27015G29KT 4000 -SN BKN011 PROB30 TEMPO 0408/0415 FEW040CB

Detailed TAF Table

Parameter
Wed
06:00Z
+-1h
Wed
07:00Z
+0h
Wed
08:00Z
+1h
Wed
09:00Z
+2h
Wed
10:00Z
+3h
Wed
11:00Z
+4h
Wed
12:00Z
+5h
Wed
13:00Z
+6h
Wind Dir
260°
W
260°
W
260°
W
260°
W
260°
W
260°
W
260°
W
260°
W
Wind Speed
10 kt
10 kt
10 kt
G29 kt
10 kt
G29 kt
10 kt
G29 kt
10 kt
G29 kt
10 kt
G29 kt
10 kt
G29 kt
Visibility
>10km
>10km
>10km
>10km
>10km
>10km
>10km
>10km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
☀️ CLR
☀️ CLR
FEW040CB
FEW040CB
FEW040CB
FEW040CB
FEW040CB
FEW040CB
Ceiling
🌤️ Unlimited
🌤️ Unlimited
4,000 ft 🌩️
CB Base
4,000 ft 🌩️
CB Base
4,000 ft 🌩️
CB Base
4,000 ft 🌩️
CB Base
4,000 ft 🌩️
CB Base
4,000 ft 🌩️
CB Base
Flight Rules VFR VFR MVFR MVFR MVFR MVFR MVFR MVFR
Day/Night
🌙
Night
🌅 06:33Z
☀️
Day
🌅 06:33Z
☀️
Day
🌅 06:33Z
☀️
Day
☀️
Day
☀️
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
260° at 10 kt
Visibility
>10km
📖 Plain English Explanation:

This is the base forecast condition. Winds from the West (260°) at 10 kt. Visibility will be excellent at more than 10km. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 08:00Z - 15:00Z
IFR
Wind
270° at 15 kt
Gusts: 29 kt
Visibility
4 km
Weather
Light Snow
Clouds
BKN011
📖 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 29 kt are expected. Visibility will be moderate at 4 km. Weather conditions: Light Snow. Broken clouds at 1100 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

PROB30 TEMPO 08:00Z - 15:00Z
MVFR
Clouds
FEW040CB
📖 Plain English Explanation:

There is a 30% probability of: Few clouds at 4000 feet. Marginal VFR conditions - some restrictions for visual flying.

📚 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.