Boeing Field King County International Airport

KBFI / BFI

Seattle, US

Current TAF Forecast

Raw TAF:
TAF KBFI 081720Z 0818/0918 VRB05KT P6SM VCSH SCT050 OVC070 FM082100 28006KT P6SM -RA SCT040 BKN050 OVC070 FM082300 04005KT 6SM -RA BR BKN040 OVC050 FM090300 14009KT 5SM -RA BR OVC025 FM090700 17010KT 5SM -RA BR OVC015 FM091200 20012G20KT 5SM -SHRA BR OVC018

Detailed TAF Table

Parameter
Mon
18:00Z
+-1h
Mon
19:00Z
+0h
Mon
20:00Z
+1h
Mon
21:00Z
+2h
Mon
22:00Z
+3h
Mon
23:00Z
+4h
Tue
00:00Z
+5h
Tue
01:00Z
+6h
Tue
02:00Z
+7h
Tue
03:00Z
+8h
Tue
04:00Z
+9h
Tue
05:00Z
+10h
Tue
06:00Z
+11h
Tue
07:00Z
+12h
Tue
08:00Z
+13h
Tue
09:00Z
+14h
Tue
10:00Z
+15h
Tue
11:00Z
+16h
Tue
12:00Z
+17h
Tue
13:00Z
+18h
Tue
14:00Z
+19h
Tue
15:00Z
+20h
Tue
16:00Z
+21h
Wind Dir
VRB
VRB
VRB
280°
W
280°
W
40°
NE
40°
NE
40°
NE
40°
NE
140°
SE
140°
SE
140°
SE
140°
SE
170°
S
170°
S
170°
S
170°
S
170°
S
200°
S
200°
S
200°
S
200°
S
200°
S
Wind Speed
5 kt
5 kt
5 kt
6 kt
6 kt
5 kt
5 kt
5 kt
5 kt
9 kt
9 kt
9 kt
9 kt
10 kt
10 kt
10 kt
10 kt
10 kt
12 kt
G20 kt
12 kt
G20 kt
12 kt
G20 kt
12 kt
G20 kt
12 kt
G20 kt
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
6SM
6SM
6SM
6SM
5SM
5SM
5SM
5SM
5SM
5SM
5SM
5SM
5SM
5SM
5SM
5SM
5SM
5SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
Light Rain
-RA
Light Rain
-RA
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Clouds
SCT050
OVC070
SCT050
OVC070
SCT050
OVC070
SCT040
BKN050
SCT040
BKN050
BKN040
OVC050
BKN040
OVC050
BKN040
OVC050
BKN040
OVC050
OVC025
OVC025
OVC025
OVC025
OVC015
OVC015
OVC015
OVC015
OVC015
OVC018
OVC018
OVC018
OVC018
OVC018
Ceiling
7,000 ft
AGL
7,000 ft
AGL
7,000 ft
AGL
5,000 ft
AGL
5,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,800 ft
AGL
1,800 ft
AGL
1,800 ft
AGL
1,800 ft
AGL
1,800 ft
AGL
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR
Day/Night
☀️
Day
🌇 19:25Z
☀️
Day
🌇 19:25Z
🌙
Night
🌇 19:25Z
🌙
Night
🌇 19:25Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:33Z
🌙
Night
🌅 04:33Z
🌙
Night
🌅 04:33Z
☀️
Day
🌅 04:33Z
☀️
Day
🌅 04:33Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
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 occurrence • AGL: Above Ground Level

Forecast Periods

BASE
VFR
Wind
VRB° at 5 kt
Visibility
>6SM
Clouds
SCT050 OVC070
📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 5 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 5000 feet, Overcast skies at 7000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM082100 21:00Z - 03:00Z
VFR
Wind
280° at 6 kt
Visibility
>6SM
Weather
Light Rain
Clouds
SCT040 BKN050 OVC070
📖 Plain English Explanation:

Winds from the West (280°) at 6 kt. Visibility will be excellent at more than 6SM. Weather conditions: Light Rain. Scattered clouds at 4000 feet, Broken clouds at 5000 feet, Overcast skies at 7000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM082300 23:00Z - 05:00Z
VFR
Wind
40° at 5 kt
Visibility
6SM
Weather
Light Rain, Mist
Clouds
BKN040 OVC050
📖 Plain English Explanation:

Winds from the Northeast (40°) at 5 kt. Visibility will be excellent at 6SM. Weather conditions: Light Rain, Mist. Broken clouds at 4000 feet, Overcast skies at 5000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM090300 03:00Z - 09:00Z
MVFR
Wind
140° at 9 kt
Visibility
5SM
Weather
Light Rain, Mist
Clouds
OVC025
📖 Plain English Explanation:

Winds from the Southeast (140°) at 9 kt. Visibility will be good at 5SM. Weather conditions: Light Rain, Mist. Overcast skies at 2500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM090700 07:00Z - 13:00Z
MVFR
Wind
170° at 10 kt
Visibility
5SM
Weather
Light Rain, Mist
Clouds
OVC015
📖 Plain English Explanation:

Winds from the South (170°) at 10 kt. Visibility will be good at 5SM. Weather conditions: Light Rain, Mist. Overcast skies at 1500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM091200 12:00Z - 18:00Z
MVFR
Wind
200° at 12 kt
Gusts: 20 kt
Visibility
5SM
Weather
Light Showers Rain, Mist
Clouds
OVC018
📖 Plain English Explanation:

Winds from the South-Southwest (200°) at 12 kt. Gusts up to 20 kt are expected. Visibility will be good at 5SM. Weather conditions: Light Showers Rain, Mist. Overcast skies at 1800 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.