John Murtha Johnstown Cambria County Airport

KJST / JST

Johnstown, US

Current TAF Forecast

Raw TAF:
TAF KJST 190532Z 1906/2006 31012G20KT 6SM -SHRA BR BKN007 OVC012 FM190800 30015G23KT 6SM -SHRA BR OVC015 FM191500 29017G26KT P6SM BKN035 FM192300 29011G20KT P6SM BKN100 FM200300 27008KT 6SM BR VCSH OVC015

Detailed TAF Table

Parameter
Sun
06:00Z
+-1h
Sun
07:00Z
+0h
Sun
08:00Z
+1h
Sun
09:00Z
+2h
Sun
10:00Z
+3h
Sun
11:00Z
+4h
Sun
12:00Z
+5h
Sun
13:00Z
+6h
Sun
14:00Z
+7h
Sun
15:00Z
+8h
Sun
16:00Z
+9h
Sun
17:00Z
+10h
Sun
18:00Z
+11h
Sun
19:00Z
+12h
Sun
20:00Z
+13h
Sun
21:00Z
+14h
Sun
22:00Z
+15h
Sun
23:00Z
+16h
Mon
00:00Z
+17h
Mon
01:00Z
+18h
Mon
02:00Z
+19h
Mon
03:00Z
+20h
Mon
04:00Z
+21h
Wind Dir
310°
NW
310°
NW
300°
NW
300°
NW
300°
NW
300°
NW
300°
NW
300°
NW
310°
NW
290°
W
290°
W
290°
W
290°
W
290°
W
290°
W
310°
NW
310°
NW
290°
W
290°
W
290°
W
290°
W
270°
W
270°
W
Wind Speed
12 kt
G20 kt
12 kt
G20 kt
15 kt
G23 kt
15 kt
G23 kt
15 kt
G23 kt
15 kt
G23 kt
15 kt
G23 kt
15 kt
G23 kt
12 kt
G20 kt
17 kt
G26 kt
17 kt
G26 kt
17 kt
G26 kt
17 kt
G26 kt
17 kt
G26 kt
17 kt
G26 kt
12 kt
G20 kt
12 kt
G20 kt
11 kt
G20 kt
11 kt
G20 kt
11 kt
G20 kt
11 kt
G20 kt
8 kt
G20 kt
8 kt
G20 kt
Visibility
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
>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 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
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Mist
BR
Mist
BR
Clouds
BKN007
OVC012
BKN007
OVC012
OVC015
OVC015
OVC015
OVC015
OVC015
OVC015
BKN007
OVC012
BKN035
BKN035
BKN035
BKN035
BKN035
BKN035
BKN007
OVC012
BKN007
OVC012
BKN100
BKN100
BKN100
BKN100
OVC015
OVC015
Ceiling
700 ft
AGL
700 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
700 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
700 ft
AGL
700 ft
AGL
10,000 ft
AGL
10,000 ft
AGL
10,000 ft
AGL
10,000 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
Flight Rules IFR IFR MVFR MVFR MVFR MVFR MVFR MVFR IFR VFR VFR VFR VFR VFR VFR IFR IFR VFR VFR VFR VFR MVFR MVFR
Day/Night
☀️
Day
🌅 05:25Z
☀️
Day
🌅 05:25Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:34Z
☀️
Day
🌇 18:34Z
☀️
Day
🌇 18:34Z
🌇
Dusk
🌇 18:34Z
🌙
Night
🌇 18:34Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:24Z
🌙
Night
🌅 05:24Z
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
IFR
Wind
310° at 12 kt
Gusts: 20 kt
Visibility
6SM
Weather
Light Showers Rain, Mist
Clouds
BKN007 OVC012
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Northwest (310°) at 12 kt. Gusts up to 20 kt are expected. Visibility will be excellent at 6SM. Weather conditions: Light Showers Rain, Mist. Broken clouds at 700 feet, Overcast skies at 1200 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM190800 08:00Z - 14:00Z
MVFR
Wind
300° at 15 kt
Gusts: 23 kt
Visibility
6SM
Weather
Light Showers Rain, Mist
Clouds
OVC015
📖 Plain English Explanation:

Winds from the West-Northwest (300°) at 15 kt. Gusts up to 23 kt are expected. Visibility will be excellent at 6SM. Weather conditions: Light Showers Rain, Mist. Overcast skies at 1500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM191500 15:00Z - 21:00Z
VFR
Wind
290° at 17 kt
Gusts: 26 kt
Visibility
>6SM
Clouds
BKN035
📖 Plain English Explanation:

Winds from the West-Northwest (290°) at 17 kt. Gusts up to 26 kt are expected. Visibility will be excellent at more than 6SM. Broken clouds at 3500 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM192300 23:00Z - 05:00Z
VFR
Wind
290° at 11 kt
Gusts: 20 kt
Visibility
>6SM
Clouds
BKN100
📖 Plain English Explanation:

Winds from the West-Northwest (290°) at 11 kt. Gusts up to 20 kt are expected. Visibility will be excellent at more than 6SM. Broken clouds at 10000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM200300 03:00Z - 09:00Z
MVFR
Wind
270° at 8 kt
Visibility
6SM
Weather
Mist
Clouds
OVC015
📖 Plain English Explanation:

Winds from the West (270°) at 8 kt. Visibility will be excellent at 6SM. Weather conditions: 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.