Great Falls International Airport

KGTF / GTF

Great Falls, US

Current TAF Forecast

Raw TAF:
TAF KGTF 230346Z 2304/2324 31025G35KT 6SM -SHRA BR BKN015 FM230600 31020G30KT 5SM -RA OVC015 FM230900 32020G30KT P6SM OVC015 PROB30 2309/2312 6SM -SN BR OVC025 FM231200 32015G25KT 6SM -SN OVC015 FM231500 32017G27KT P6SM OVC015 PROB30 2315/2321 6SM -SN BR OVC015

Detailed TAF Table

Parameter
Thu
04:00Z
+-1h
Thu
05:00Z
+0h
Thu
06:00Z
+1h
Thu
07:00Z
+2h
Thu
08:00Z
+3h
Thu
09:00Z
+4h
Thu
10:00Z
+5h
Thu
11:00Z
+6h
Thu
12:00Z
+7h
Thu
13:00Z
+8h
Thu
14:00Z
+9h
Thu
15:00Z
+10h
Thu
16:00Z
+11h
Thu
17:00Z
+12h
Thu
18:00Z
+13h
Thu
19:00Z
+14h
Thu
20:00Z
+15h
Thu
21:00Z
+16h
Thu
22:00Z
+17h
Wind Dir
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
320°
NW
320°
NW
320°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
Wind Speed
25 kt
G35 kt
25 kt
G35 kt
20 kt
G30 kt
20 kt
G30 kt
20 kt
G30 kt
25 kt
G35 kt
25 kt
G35 kt
25 kt
G35 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
25 kt
G35 kt
25 kt
G35 kt
25 kt
G35 kt
25 kt
G35 kt
25 kt
G35 kt
25 kt
G35 kt
25 kt
G35 kt
25 kt
G35 kt
Visibility
6SM
6SM
5SM
5SM
5SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
Weather
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Rain
-RA
Light Rain
-RA
Light Rain
-RA
Light Snow, Mist
-SN BR
30%
Light Snow, Mist
-SN BR
30%
Light Snow, Mist
-SN BR
30%
Light Snow
-SN
Light Snow
-SN
Light Snow
-SN
Light Snow, Mist
-SN BR
30%
Light Snow, Mist
-SN BR
30%
Light Snow, Mist
-SN BR
30%
Light Snow, Mist
-SN BR
30%
Light Snow, Mist
-SN BR
30%
Light Snow, Mist
-SN BR
30%
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Clouds
BKN015
BKN015
OVC015
OVC015
OVC015
OVC025
OVC025
OVC025
OVC015
OVC015
OVC015
OVC015
OVC015
OVC015
OVC015
OVC015
OVC015
BKN015
BKN015
Ceiling
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 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
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
Flight Rules MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR
Day/Night
🌙
Night
🌅 05:15Z
🌅
Dawn
🌅 05:15Z
☀️
Day
🌅 05:15Z
☀️
Day
🌅 05:15Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:44Z
☀️
Day
🌇 18:44Z
☀️
Day
🌇 18:44Z
🌇
Dusk
🌇 18:44Z
🌙
Night
🌇 18:44Z
🌙
Night
🌙
Night
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
MVFR
Wind
310° at 25 kt
Gusts: 35 kt
Visibility
6SM
Weather
Light Showers Rain, Mist
Clouds
BKN015
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Northwest (310°) at 25 kt. Gusts up to 35 kt are expected. Visibility will be excellent at 6SM. Weather conditions: Light Showers Rain, Mist. Broken clouds at 1500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM230600 06:00Z - 12:00Z
MVFR
Wind
310° at 20 kt
Gusts: 30 kt
Visibility
5SM
Weather
Light Rain
Clouds
OVC015
📖 Plain English Explanation:

Winds from the Northwest (310°) at 20 kt. Gusts up to 30 kt are expected. Visibility will be good at 5SM. Weather conditions: Light Rain. Overcast skies at 1500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM230900 09:00Z - 15:00Z
MVFR
Wind
320° at 20 kt
Gusts: 30 kt
Visibility
>6SM
Clouds
OVC015
📖 Plain English Explanation:

Winds from the Northwest (320°) at 20 kt. Gusts up to 30 kt are expected. Visibility will be excellent at more than 6SM. Overcast skies at 1500 feet. Marginal VFR conditions - some restrictions for visual flying.

PROB30 09:00Z - 12:00Z
MVFR
Visibility
6SM
Weather
Light Snow, Mist
Clouds
OVC025
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be excellent at 6SM. Weather conditions: Light Snow, Mist. Overcast skies at 2500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM231200 12:00Z - 18:00Z
MVFR
Wind
320° at 15 kt
Gusts: 25 kt
Visibility
6SM
Weather
Light Snow
Clouds
OVC015
📖 Plain English Explanation:

Winds from the Northwest (320°) at 15 kt. Gusts up to 25 kt are expected. Visibility will be excellent at 6SM. Weather conditions: Light Snow. Overcast skies at 1500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM231500 15:00Z - 21:00Z
MVFR
Wind
320° at 17 kt
Gusts: 27 kt
Visibility
>6SM
Clouds
OVC015
📖 Plain English Explanation:

Winds from the Northwest (320°) at 17 kt. Gusts up to 27 kt are expected. Visibility will be excellent at more than 6SM. Overcast skies at 1500 feet. Marginal VFR conditions - some restrictions for visual flying.

PROB30 15:00Z - 21:00Z
MVFR
Visibility
6SM
Weather
Light Snow, Mist
Clouds
OVC015
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be excellent at 6SM. Weather conditions: Light Snow, Mist. 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.