Yellowstone Airport

KWYS / WYS

West Yellowstone, US

Current TAF Forecast

Raw TAF:
KWYS 160520Z 1606/1706 VRB03KT 6SM BR BKN100 PROB30 1612/1615 5SM -SHRASN SCT015 BKN035 FM161700 VRB03KT P6SM SCT023 BKN035 FM162000 VRB06KT P6SM SCT070 FM162100 03007KT P6SM SCT070 PROB30 1622/1624 6SM -SHRA OVC040

Detailed TAF Table

Parameter
Tue
08:00Z
+-1h
Tue
09:00Z
+0h
Tue
10:00Z
+1h
Tue
11:00Z
+2h
Tue
12:00Z
+3h
Tue
13:00Z
+4h
Tue
14:00Z
+5h
Tue
15:00Z
+6h
Tue
16:00Z
+7h
Tue
17:00Z
+8h
Tue
18:00Z
+9h
Tue
19:00Z
+10h
Tue
20:00Z
+11h
Tue
21:00Z
+12h
Tue
22:00Z
+13h
Tue
23:00Z
+14h
Wed
00:00Z
+15h
Wed
01:00Z
+16h
Wed
02:00Z
+17h
Wed
03:00Z
+18h
Wed
04:00Z
+19h
Wind Dir
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
30°
NE
VRB
VRB
30°
NE
30°
NE
30°
NE
VRB
VRB
Wind Speed
3kt
3kt
3kt
3kt
3kt
3kt
3kt
3kt
3kt
3kt
3kt
3kt
6kt
7kt
3kt
3kt
7kt
7kt
7kt
3kt
3kt
Visibility
6SM
6SM
6SM
6SM
5SM
5SM
5SM
6SM
6SM
>6SM
>6SM
>6SM
>6SM
>6SM
6SM
6SM
>6SM
>6SM
>6SM
6SM
6SM
Weather
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Light Showers RASN
-SHRASN
30%
Light Showers RASN
-SHRASN
30%
Light Showers RASN
-SHRASN
30%
Mist
BR
Mist
BR
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Light Showers Rain
-SHRA
30%
Light Showers Rain
-SHRA
30%
☀️ Clear
☀️ Clear
☀️ Clear
Mist
BR
Mist
BR
Clouds
BKN100
BKN100
BKN100
BKN100
SCT015
BKN035
SCT015
BKN035
SCT015
BKN035
BKN100
BKN100
SCT023
BKN035
SCT023
BKN035
SCT023
BKN035
SCT070
SCT070
OVC040
OVC040
SCT070
SCT070
SCT070
BKN100
BKN100
Ceiling
10000ft
AGL
10000ft
AGL
10000ft
AGL
10000ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
10000ft
AGL
10000ft
AGL
3500ft
AGL
3500ft
AGL
3500ft
AGL
🌤️ Unlimited
🌤️ Unlimited
4000ft
AGL
4000ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
10000ft
AGL
10000ft
AGL
Flight Rules VFR VFR VFR VFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:08
☀️
Day
🌇 18:08
☀️
Day
🌇 18:08
🌙
Night
🌇 18:08
🌙
Night
🌇 18:08
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:53
🌙
Night
🌅 05:53
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
VRB° at 3 kt
Visibility
6SM
Weather
Mist
Clouds
BKN100
📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 3kt. Visibility will be excellent at 6SM. Weather conditions: Mist. Broken clouds at 10000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 2025-09-16 12:00:00 - 2025-09-16 15:00:00
MVFR
Visibility
5SM
Weather
Light Showers RASN
Clouds
SCT015 BKN035
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be good at 5SM. Weather conditions: Light Showers RASN. Scattered clouds at 1500 feet, Broken clouds at 3500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM161700 2025-09-16 17:00:00 - 2025-09-16 23:00:00
VFR
Wind
VRB° at 3 kt
Visibility
>6SM
Clouds
SCT023 BKN035
📖 Plain English Explanation:

Winds will be variable in direction at 3kt. Visibility will be excellent at more than 6SM. Scattered clouds at 2300 feet, Broken clouds at 3500 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM162000 2025-09-16 20:00:00 - 2025-09-17 02:00:00
VFR
Wind
VRB° at 6 kt
Visibility
>6SM
Clouds
SCT070
📖 Plain English Explanation:

Winds will be variable in direction at 6kt. Visibility will be excellent at more than 6SM. Scattered clouds at 7000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM162100 2025-09-16 21:00:00 - 2025-09-17 03:00:00
VFR
Wind
30° at 7 kt
Visibility
>6SM
Clouds
SCT070
📖 Plain English Explanation:

Winds from the North-Northeast (30°) at 7kt. Visibility will be excellent at more than 6SM. Scattered clouds at 7000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 2025-09-16 22:00:00 - 2025-09-17 00:00:00
VFR
Visibility
6SM
Weather
Light Showers Rain
Clouds
OVC040
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be excellent at 6SM. Weather conditions: Light Showers Rain. Overcast skies at 4000 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.