Boeing Field King County International Airport

KBFI / BFI

Seattle, US

Current TAF Forecast

Raw TAF:
TAF KBFI 221724Z 2218/2318 20007KT 5SM -RA BR BKN009 OVC017 FM222000 19010KT P6SM VCSH SCT012 BKN020 OVC040 FM230200 19009KT P6SM SCT025 BKN040 FM231100 16008KT P6SM OVC035 FM231700 18007KT P6SM BKN045

Detailed TAF Table

Parameter
Wed
23:00Z
+-1h
Thu
00:00Z
+0h
Thu
01:00Z
+1h
Thu
02:00Z
+2h
Thu
03:00Z
+3h
Thu
04:00Z
+4h
Thu
05:00Z
+5h
Thu
06:00Z
+6h
Thu
07:00Z
+7h
Thu
08:00Z
+8h
Thu
09:00Z
+9h
Thu
10:00Z
+10h
Thu
11:00Z
+11h
Thu
12:00Z
+12h
Thu
13:00Z
+13h
Thu
14:00Z
+14h
Thu
15:00Z
+15h
Thu
16:00Z
+16h
Wind Dir
200°
S
200°
S
200°
S
190°
S
190°
S
190°
S
190°
S
190°
S
190°
S
200°
S
200°
S
200°
S
160°
S
160°
S
160°
S
160°
S
160°
S
160°
S
Wind Speed
7 kt
7 kt
7 kt
9 kt
9 kt
9 kt
9 kt
9 kt
9 kt
7 kt
7 kt
7 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
Visibility
5SM
5SM
5SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
5SM
5SM
5SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
BKN009
OVC017
BKN009
OVC017
BKN009
OVC017
SCT025
BKN040
SCT025
BKN040
SCT025
BKN040
SCT025
BKN040
SCT025
BKN040
SCT025
BKN040
BKN009
OVC017
BKN009
OVC017
BKN009
OVC017
OVC035
OVC035
OVC035
OVC035
OVC035
OVC035
Ceiling
900 ft
AGL
900 ft
AGL
900 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
900 ft
AGL
900 ft
AGL
900 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
Flight Rules IFR IFR IFR VFR VFR VFR VFR VFR VFR IFR IFR IFR VFR VFR VFR VFR VFR VFR
Day/Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:15Z
🌙
Night
🌅 05:15Z
🌅
Dawn
🌅 05:15Z
☀️
Day
🌅 05:15Z
☀️
Day
🌅 05:15Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:45Z
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 occurrence • AGL: Above Ground Level

Forecast Periods

BASE
IFR
Wind
200° at 7 kt
Visibility
5SM
Weather
Light Rain, Mist
Clouds
BKN009 OVC017
📖 Plain English Explanation:

This is the base forecast condition. Winds from the South-Southwest (200°) at 7 kt. Visibility will be good at 5SM. Weather conditions: Light Rain, Mist. Broken clouds at 900 feet, Overcast skies at 1700 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM222000 20:00Z - 02:00Z
MVFR
Wind
190° at 10 kt
Visibility
>6SM
Clouds
SCT012 BKN020 OVC040
📖 Plain English Explanation:

Winds from the South (190°) at 10 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 1200 feet, Broken clouds at 2000 feet, Overcast skies at 4000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM230200 02:00Z - 08:00Z
VFR
Wind
190° at 9 kt
Visibility
>6SM
Clouds
SCT025 BKN040
📖 Plain English Explanation:

Winds from the South (190°) at 9 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 2500 feet, Broken clouds at 4000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM231100 11:00Z - 17:00Z
VFR
Wind
160° at 8 kt
Visibility
>6SM
Clouds
OVC035
📖 Plain English Explanation:

Winds from the South-Southeast (160°) at 8 kt. Visibility will be excellent at more than 6SM. Overcast skies at 3500 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM231700 17:00Z - 23:00Z
VFR
Wind
180° at 7 kt
Visibility
>6SM
Clouds
BKN045
📖 Plain English Explanation:

Winds from the South (180°) at 7 kt. Visibility will be excellent at more than 6SM. Broken clouds at 4500 feet. 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.