Sundsvall-Härnösand Airport

ESNN / SDL

Sundsvall/ Härnösand, SE

Current TAF Forecast

Raw TAF:
TAF ESNN 041130Z 0412/0416 13010KT 9999 BKN007 BECMG 0412/0414 SCT010 BKN020

Detailed TAF Table

Parameter
Tue
12:00Z
+-1h
Tue
13:00Z
+0h
Tue
14:00Z
+1h
Wind Dir
130°
SE
130°
SE
130°
SE
Wind Speed
10kt
10kt
10kt
Visibility
10+ km
10+ km
10+ km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
BKN007
BKN007
SCT010
BKN020
Ceiling
700ft
AGL
700ft
AGL
2000ft
AGL
Flight Rules IFR IFR MVFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
🌇 16:47
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
IFR
Wind
130° at 10 kt
Visibility
10+ km
Clouds
BKN007
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southeast (130°) at 10kt. Visibility will be excellent at 10+ km. Broken clouds at 700 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

BECMG 2025-12-04 12:00:00 - 2025-11-04 14:00:00
MVFR
Clouds
SCT010 BKN020
📖 Plain English Explanation:

Conditions will gradually change to become: Scattered clouds at 1000 feet, Broken clouds at 2000 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.