Bert Mooney Airport

KBTM / BTM

Butte, US

Current TAF Forecast

Raw TAF:
TAF KBTM 080520Z 0806/0906 14005KT P6SM SCT250 FM082200 21011G21KT P6SM SCT100 FM090200 15006KT P6SM OVC080

Detailed TAF Table

Parameter
Mon
09:00Z
+-1h
Mon
10:00Z
+0h
Mon
11:00Z
+1h
Mon
12:00Z
+2h
Mon
13:00Z
+3h
Mon
14:00Z
+4h
Mon
15:00Z
+5h
Mon
16:00Z
+6h
Mon
17:00Z
+7h
Mon
18:00Z
+8h
Mon
19:00Z
+9h
Mon
20:00Z
+10h
Mon
21:00Z
+11h
Mon
22:00Z
+12h
Mon
23:00Z
+13h
Tue
00:00Z
+14h
Tue
01:00Z
+15h
Tue
02:00Z
+16h
Tue
03:00Z
+17h
Tue
04:00Z
+18h
Wind Dir
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
210°
SW
210°
SW
210°
SW
210°
SW
150°
SE
150°
SE
150°
SE
Wind Speed
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
11 kt
G21 kt
11 kt
G21 kt
11 kt
G21 kt
11 kt
G21 kt
6 kt
G21 kt
6 kt
G21 kt
6 kt
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
SCT250
SCT250
SCT250
SCT250
SCT250
SCT250
SCT250
SCT250
SCT250
SCT250
SCT250
SCT250
SCT250
SCT100
SCT100
SCT100
SCT100
OVC080
OVC080
OVC080
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
8,000 ft
AGL
8,000 ft
AGL
8,000 ft
AGL
Flight Rules VFR VFR VFR VFR VFR VFR 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
🌇 19:23Z
☀️
Day
🌇 19:23Z
☀️
Day
🌇 19:23Z
🌙
Night
🌇 19:23Z
🌙
Night
🌇 19:23Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:36Z
🌙
Night
🌅 04:36Z
🌙
Night
🌅 04:36Z
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
140° at 5 kt
Visibility
>6SM
Clouds
SCT250
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southeast (140°) at 5 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM082200 22:00Z - 04:00Z
VFR
Wind
210° at 11 kt
Gusts: 21 kt
Visibility
>6SM
Clouds
SCT100
📖 Plain English Explanation:

Winds from the South-Southwest (210°) at 11 kt. Gusts up to 21 kt are expected. Visibility will be excellent at more than 6SM. Scattered clouds at 10000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM090200 02:00Z - 08:00Z
VFR
Wind
150° at 6 kt
Visibility
>6SM
Clouds
OVC080
📖 Plain English Explanation:

Winds from the South-Southeast (150°) at 6 kt. Visibility will be excellent at more than 6SM. Overcast skies at 8000 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.