Yellowstone Airport

KWYS / WYS

West Yellowstone, US

Current TAF Forecast

Raw TAF:
TAF KWYS 230537Z 2306/2406 23009KT 3SM -SN BR BKN004 TEMPO 2306/2309 OVC035 FM230900 VRB06KT P6SM BKN004 TEMPO 2309/2313 OVC035 FM231800 27010G25KT 3SM -SHSN BR SCT003 BKN025 FM240200 VRB06KT P6SM SCT003 OVC015

Detailed TAF Table

Parameter
Thu
09:00Z
+-1h
Thu
10:00Z
+0h
Thu
11:00Z
+1h
Thu
12:00Z
+2h
Thu
13:00Z
+3h
Thu
14:00Z
+4h
Thu
15:00Z
+5h
Thu
16:00Z
+6h
Thu
17:00Z
+7h
Thu
18:00Z
+8h
Thu
19:00Z
+9h
Thu
20:00Z
+10h
Thu
21:00Z
+11h
Thu
22:00Z
+12h
Thu
23:00Z
+13h
Fri
00:00Z
+14h
Fri
01:00Z
+15h
Fri
02:00Z
+16h
Fri
03:00Z
+17h
Fri
04:00Z
+18h
Wind Dir
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
270°
W
270°
W
270°
W
270°
W
270°
W
270°
W
230°
SW
230°
SW
VRB
VRB
VRB
Wind Speed
9 kt
9 kt
9 kt
9 kt
9 kt
9 kt
9 kt
9 kt
9 kt
10 kt
G25 kt
10 kt
G25 kt
10 kt
G25 kt
10 kt
G25 kt
10 kt
G25 kt
10 kt
G25 kt
9 kt
9 kt
6 kt
6 kt
6 kt
Visibility
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
>6SM
>6SM
>6SM
Weather
Light Snow, Mist
-SN BR
Light Snow, Mist
-SN BR
Light Snow, Mist
-SN BR
Light Snow, Mist
-SN BR
Light Snow, Mist
-SN BR
Light Snow, Mist
-SN BR
Light Snow, Mist
-SN BR
Light Snow, Mist
-SN BR
Light Snow, Mist
-SN BR
Light Showers Snow, Mist
-SHSN BR
Light Showers Snow, Mist
-SHSN BR
Light Showers Snow, Mist
-SHSN BR
Light Showers Snow, Mist
-SHSN BR
Light Showers Snow, Mist
-SHSN BR
Light Showers Snow, Mist
-SHSN BR
Light Snow, Mist
-SN BR
Light Snow, Mist
-SN BR
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
BKN004
BKN004
BKN004
BKN004
BKN004
BKN004
BKN004
BKN004
BKN004
SCT003
BKN025
SCT003
BKN025
SCT003
BKN025
SCT003
BKN025
SCT003
BKN025
SCT003
BKN025
BKN004
BKN004
SCT003
OVC015
SCT003
OVC015
SCT003
OVC015
Ceiling
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
400 ft
AGL
400 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
Flight Rules LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR MVFR MVFR MVFR MVFR MVFR MVFR LIFR LIFR MVFR MVFR MVFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:42Z
☀️
Day
🌇 18:42Z
☀️
Day
🌇 18:42Z
🌇
Dusk
🌇 18:42Z
🌙
Night
🌇 18:42Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:15Z
🌙
Night
🌅 05:15Z
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
LIFR
Wind
230° at 9 kt
Visibility
3SM
Weather
Light Snow, Mist
Clouds
BKN004
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southwest (230°) at 9 kt. Visibility will be good at 3SM. Weather conditions: Light Snow, Mist. Broken clouds at 400 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 06:00Z - 09:00Z
VFR
Clouds
OVC035
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Overcast skies at 3500 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM230900 09:00Z - 15:00Z
LIFR
Wind
VRB° at 6 kt
Visibility
>6SM
Clouds
BKN004
📖 Plain English Explanation:

Winds will be variable in direction at 6 kt. Visibility will be excellent at more than 6SM. Broken clouds at 400 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 09:00Z - 13:00Z
VFR
Clouds
OVC035
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Overcast skies at 3500 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM231800 18:00Z - 00:00Z
MVFR
Wind
270° at 10 kt
Gusts: 25 kt
Visibility
3SM
Weather
Light Showers Snow, Mist
Clouds
SCT003 BKN025
📖 Plain English Explanation:

Winds from the West (270°) at 10 kt. Gusts up to 25 kt are expected. Visibility will be good at 3SM. Weather conditions: Light Showers Snow, Mist. Scattered clouds at 300 feet, Broken clouds at 2500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM240200 02:00Z - 08:00Z
MVFR
Wind
VRB° at 6 kt
Visibility
>6SM
Clouds
SCT003 OVC015
📖 Plain English Explanation:

Winds will be variable in direction at 6 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 300 feet, Overcast skies at 1500 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.