St. John's International Airport

CYYT / YYT

St. John's, CA

Current TAF Forecast

Raw TAF:
TAF CYYT 042348Z 0500/0524 26010KT P6SM BKN120 FM050300 24007KT P6SM BKN030 TEMPO 0503/0506 2SM BR BKN005 PROB30 0503/0506 1/2SM FG VV002 FM050600 01010KT 1/2SM -SHRA FG VV002 FM051000 02008KT 3/4SM -SHRA BR VV002 PROB30 0511/0514 3/8SM TSRA FG BKN002 OVC030CB FM051500 04008KT 2SM -DZ BR OVC005 FM051800 01012KT 6SM BR OVC008 FM052200 35012KT 2SM BR OVC004 RMK NXT FCST BY 050600Z

Detailed TAF Table

Parameter
Sun
04:00Z
+-1h
Sun
05:00Z
+0h
Sun
06:00Z
+1h
Sun
07:00Z
+2h
Sun
08:00Z
+3h
Sun
09:00Z
+4h
Sun
10:00Z
+5h
Sun
11:00Z
+6h
Sun
12:00Z
+7h
Sun
13:00Z
+8h
Sun
14:00Z
+9h
Sun
15:00Z
+10h
Sun
16:00Z
+11h
Sun
17:00Z
+12h
Sun
18:00Z
+13h
Sun
19:00Z
+14h
Sun
20:00Z
+15h
Sun
21:00Z
+16h
Sun
22:00Z
+17h
Wind Dir
260°
W
260°
W
10°
N
10°
N
10°
N
10°
N
20°
N
260°
W
260°
W
260°
W
20°
N
40°
NE
40°
NE
40°
NE
10°
N
10°
N
10°
N
10°
N
350°
N
Wind Speed
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
8 kt
10 kt
10 kt
10 kt
8 kt
8 kt
8 kt
8 kt
12 kt
12 kt
12 kt
12 kt
12 kt
Visibility
>6SM
>6SM
1/2SM
1/2SM
1/2SM
1/2SM
3/4SM
3/8SM
3/8SM
3/8SM
3/4SM
2SM
2SM
2SM
6SM
6SM
6SM
6SM
2SM
Weather
☀️ Clear
☀️ Clear
Light Showers Rain, Fog
-SHRA FG
Light Showers Rain, Fog
-SHRA FG
Light Showers Rain, Fog
-SHRA FG
Light Showers Rain, Fog
-SHRA FG
Light Showers Rain, Mist
-SHRA BR
Thunderstorm Rain, Fog
TSRA FG
30%
Thunderstorm Rain, Fog
TSRA FG
30%
Thunderstorm Rain, Fog
TSRA FG
30%
Light Showers Rain, Mist
-SHRA BR
Light Drizzle, Mist
-DZ BR
Light Drizzle, Mist
-DZ BR
Light Drizzle, Mist
-DZ BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist, FCST
BR FCST
Clouds
BKN120
BKN120
VV002
VV002
VV002
VV002
VV002
BKN002
OVC030CB
BKN002
OVC030CB
BKN002
OVC030CB
VV002
OVC005
OVC005
OVC005
OVC008
OVC008
OVC008
OVC008
OVC004
Ceiling
12,000 ft
AGL
12,000 ft
AGL
200 ft 🌫️
Indefinite
200 ft 🌫️
Indefinite
200 ft 🌫️
Indefinite
200 ft 🌫️
Indefinite
200 ft 🌫️
Indefinite
200 ft
AGL
200 ft
AGL
200 ft
AGL
200 ft 🌫️
Indefinite
500 ft
AGL
500 ft
AGL
500 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
400 ft
AGL
Flight Rules VFR VFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR IFR IFR IFR IFR IFR IFR IFR LIFR
Day/Night
🌙
Night
🌅 04:33Z
☀️
Day
🌅 04:33Z
☀️
Day
🌅 04:33Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 19:26Z
☀️
Day
🌇 19:26Z
☀️
Day
🌇 19:26Z
🌙
Night
🌇 19:26Z
🌙
Night
🌇 19:26Z
🌙
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
VFR
Wind
260° at 10 kt
Visibility
>6SM
Clouds
BKN120
📖 Plain English Explanation:

This is the base forecast condition. Winds from the West (260°) at 10 kt. Visibility will be excellent at more than 6SM. Broken clouds at 12000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM050300 03:00Z - 09:00Z
VFR
Wind
240° at 7 kt
Visibility
>6SM
Clouds
BKN030
📖 Plain English Explanation:

Winds from the West-Southwest (240°) at 7 kt. Visibility will be excellent at more than 6SM. Broken clouds at 3000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 03:00Z - 06:00Z
IFR
Visibility
2SM
Weather
Mist
Clouds
BKN005
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 2SM. Weather conditions: Mist. Broken clouds at 500 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

PROB30 03:00Z - 06:00Z
LIFR
Visibility
1/2SM
Weather
Fog
Clouds
VV002
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be moderate at 1/2SM. Weather conditions: Fog. Vertical visibility at 200 feet. Low IFR conditions - challenging even for instrument operations.

FM050600 06:00Z - 12:00Z
LIFR
Wind
10° at 10 kt
Visibility
1/2SM
Weather
Light Showers Rain, Fog
Clouds
VV002
📖 Plain English Explanation:

Winds from the North (10°) at 10 kt. Visibility will be moderate at 1/2SM. Weather conditions: Light Showers Rain, Fog. Vertical visibility at 200 feet. Low IFR conditions - challenging even for instrument operations.

FM051000 10:00Z - 16:00Z
LIFR
Wind
20° at 8 kt
Visibility
3/4SM
Weather
Light Showers Rain, Mist
Clouds
VV002
📖 Plain English Explanation:

Winds from the North-Northeast (20°) at 8 kt. Visibility will be good at 3/4SM. Weather conditions: Light Showers Rain, Mist. Vertical visibility at 200 feet. Low IFR conditions - challenging even for instrument operations.

PROB30 11:00Z - 14:00Z
LIFR
Visibility
3/8SM
Weather
Thunderstorm Rain, Fog
Clouds
BKN002 OVC030CB
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be good at 3/8SM. Weather conditions: Thunderstorm Rain, Fog. Broken clouds at 200 feet, Overcast skies at 3000 feet. Low IFR conditions - challenging even for instrument operations.

FM051500 15:00Z - 21:00Z
IFR
Wind
40° at 8 kt
Visibility
2SM
Weather
Light Drizzle, Mist
Clouds
OVC005
📖 Plain English Explanation:

Winds from the Northeast (40°) at 8 kt. Visibility will be moderate at 2SM. Weather conditions: Light Drizzle, Mist. Overcast skies at 500 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM051800 18:00Z - 00:00Z
IFR
Wind
10° at 12 kt
Visibility
6SM
Weather
Mist
Clouds
OVC008
📖 Plain English Explanation:

Winds from the North (10°) at 12 kt. Visibility will be excellent at 6SM. Weather conditions: Mist. Overcast skies at 800 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM052200 22:00Z - 04:00Z
LIFR
Wind
350° at 12 kt
Visibility
2SM
Weather
Mist, FCST
Clouds
OVC004
📖 Plain English Explanation:

Winds from the North (350°) at 12 kt. Visibility will be moderate at 2SM. Weather conditions: Mist, FCST. Overcast skies at 400 feet. Low IFR conditions - challenging even for instrument 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.