St. John's International Airport

CYYT / YYT

St. John's, CA

Current TAF Forecast

Raw TAF:
TAF CYYT 221741Z 2218/2318 04015G25KT 1/2SM -FZRA FZFG VV003 TEMPO 2218/2220 1SM FZRA BR OVC004 FM222000 01010G20KT 1/2SM -RA FG VV003 TEMPO 2220/2222 1SM -FZRA BR OVC004 FM222200 34012KT 3/4SM -FZDZ BR OVC003 TEMPO 2222/2224 2SM -RA -DZ BR OVC004 PROB30 2222/2224 2SM -FZRA BR FM230000 31012G22KT 2SM -FZDZ BR SCT002 OVC004 PROB30 2300/2302 2SM -FZRA BR OVC002 FM230600 28015G25KT 5SM -FZDZ BR OVC008 FM231000 28015G25KT P6SM -SHSN SCT008 OVC012 PROB30 2310/2314 5SM -SHSN OVC008 FM231400 28012KT P6SM OVC015 RMK NXT FCST BY 230000Z

Detailed TAF Table

Parameter
Wed
22:00Z
+-1h
Wed
23:00Z
+0h
Thu
00:00Z
+1h
Thu
01:00Z
+2h
Thu
02:00Z
+3h
Thu
03:00Z
+4h
Thu
04:00Z
+5h
Thu
05:00Z
+6h
Thu
06:00Z
+7h
Thu
07:00Z
+8h
Thu
08:00Z
+9h
Thu
09:00Z
+10h
Thu
10:00Z
+11h
Thu
11:00Z
+12h
Thu
12:00Z
+13h
Thu
13:00Z
+14h
Thu
14:00Z
+15h
Thu
15:00Z
+16h
Thu
16:00Z
+17h
Wind Dir
40°
NE
40°
NE
40°
NE
40°
NE
310°
NW
310°
NW
310°
NW
310°
NW
280°
W
280°
W
280°
W
280°
W
40°
NE
40°
NE
40°
NE
40°
NE
280°
W
280°
W
280°
W
Wind Speed
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
12 kt
G22 kt
12 kt
G22 kt
12 kt
G22 kt
12 kt
G22 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
12 kt
G25 kt
12 kt
G25 kt
12 kt
G25 kt
Visibility
1/2SM
1/2SM
2SM
2SM
2SM
2SM
2SM
2SM
5SM
5SM
5SM
5SM
5SM
5SM
5SM
5SM
>6SM
>6SM
>6SM
Weather
Light Freezing Rain, Freezing Fog
-FZRA FZFG
Light Freezing Rain, Freezing Fog
-FZRA FZFG
Light Freezing Rain, Mist
-FZRA BR
30%
Light Freezing Rain, Mist
-FZRA BR
30%
Light Freezing Drizzle, Mist
-FZDZ BR
Light Freezing Drizzle, Mist
-FZDZ BR
Light Freezing Drizzle, Mist
-FZDZ BR
Light Freezing Drizzle, Mist
-FZDZ BR
Light Freezing Drizzle, Mist
-FZDZ BR
Light Freezing Drizzle, Mist
-FZDZ BR
Light Freezing Drizzle, Mist
-FZDZ BR
Light Freezing Drizzle, Mist
-FZDZ BR
Light Showers Snow
-SHSN
30%
Light Showers Snow
-SHSN
30%
Light Showers Snow
-SHSN
30%
Light Showers Snow
-SHSN
30%
FCST
FCST
FCST
FCST
FCST
FCST
Clouds
VV003
VV003
OVC002
OVC002
SCT002
OVC004
SCT002
OVC004
SCT002
OVC004
SCT002
OVC004
OVC008
OVC008
OVC008
OVC008
OVC008
OVC008
OVC008
OVC008
OVC015
OVC015
OVC015
Ceiling
300 ft 🌫️
Indefinite
300 ft 🌫️
Indefinite
200 ft
AGL
200 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
Flight Rules LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR IFR IFR IFR IFR IFR IFR IFR IFR MVFR MVFR MVFR
Day/Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:14Z
🌙
Night
🌅 05:14Z
🌅
Dawn
🌅 05:14Z
☀️
Day
🌅 05:14Z
☀️
Day
🌅 05:14Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:45Z
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
LIFR
Wind
40° at 15 kt
Gusts: 25 kt
Visibility
1/2SM
Weather
Light Freezing Rain, Freezing Fog
Clouds
VV003
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Northeast (40°) at 15 kt. Gusts up to 25 kt are expected. Visibility will be moderate at 1/2SM. Weather conditions: Light Freezing Rain, Freezing Fog. Vertical visibility at 300 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 18:00Z - 20:00Z
LIFR
Visibility
1SM
Weather
Freezing Rain, Mist
Clouds
OVC004
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 1SM. Weather conditions: Freezing Rain, Mist. Overcast skies at 400 feet. Low IFR conditions - challenging even for instrument operations.

FM222000 20:00Z - 02:00Z
LIFR
Wind
10° at 10 kt
Gusts: 20 kt
Visibility
1/2SM
Weather
Light Rain, Fog
Clouds
VV003
📖 Plain English Explanation:

Winds from the North (10°) at 10 kt. Gusts up to 20 kt are expected. Visibility will be moderate at 1/2SM. Weather conditions: Light Rain, Fog. Vertical visibility at 300 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 20:00Z - 22:00Z
LIFR
Visibility
1SM
Weather
Light Freezing Rain, Mist
Clouds
OVC004
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 1SM. Weather conditions: Light Freezing Rain, Mist. Overcast skies at 400 feet. Low IFR conditions - challenging even for instrument operations.

FM222200 22:00Z - 04:00Z
LIFR
Wind
340° at 12 kt
Visibility
3/4SM
Weather
Light Freezing Drizzle, Mist
Clouds
OVC003
📖 Plain English Explanation:

Winds from the North-Northwest (340°) at 12 kt. Visibility will be good at 3/4SM. Weather conditions: Light Freezing Drizzle, Mist. Overcast skies at 300 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 22:00Z - 00:00Z
LIFR
Visibility
2SM
Weather
Light Rain, Light Drizzle, Mist
Clouds
OVC004
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 2SM. Weather conditions: Light Rain, Light Drizzle, Mist. Overcast skies at 400 feet. Low IFR conditions - challenging even for instrument operations.

PROB30 22:00Z - 00:00Z
IFR
Visibility
2SM
Weather
Light Freezing Rain, Mist
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be moderate at 2SM. Weather conditions: Light Freezing Rain, Mist. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM230000 00:00Z - 06:00Z
LIFR
Wind
310° at 12 kt
Gusts: 22 kt
Visibility
2SM
Weather
Light Freezing Drizzle, Mist
Clouds
SCT002 OVC004
📖 Plain English Explanation:

Winds from the Northwest (310°) at 12 kt. Gusts up to 22 kt are expected. Visibility will be moderate at 2SM. Weather conditions: Light Freezing Drizzle, Mist. Scattered clouds at 200 feet, Overcast skies at 400 feet. Low IFR conditions - challenging even for instrument operations.

PROB30 00:00Z - 02:00Z
LIFR
Visibility
2SM
Weather
Light Freezing Rain, Mist
Clouds
OVC002
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be moderate at 2SM. Weather conditions: Light Freezing Rain, Mist. Overcast skies at 200 feet. Low IFR conditions - challenging even for instrument operations.

FM230600 06:00Z - 12:00Z
IFR
Wind
280° at 15 kt
Gusts: 25 kt
Visibility
5SM
Weather
Light Freezing Drizzle, Mist
Clouds
OVC008
📖 Plain English Explanation:

Winds from the West (280°) at 15 kt. Gusts up to 25 kt are expected. Visibility will be good at 5SM. Weather conditions: Light Freezing Drizzle, Mist. Overcast skies at 800 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM231000 10:00Z - 16:00Z
IFR
Wind
280° at 15 kt
Gusts: 25 kt
Visibility
>6SM
Weather
Light Showers Snow
Clouds
SCT008 OVC012
📖 Plain English Explanation:

Winds from the West (280°) at 15 kt. Gusts up to 25 kt are expected. Visibility will be excellent at more than 6SM. Weather conditions: Light Showers Snow. Scattered clouds at 800 feet, Overcast skies at 1200 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

PROB30 10:00Z - 14:00Z
IFR
Visibility
5SM
Weather
Light Showers Snow
Clouds
OVC008
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be good at 5SM. Weather conditions: Light Showers Snow. Overcast skies at 800 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM231400 14:00Z - 20:00Z
MVFR
Wind
280° at 12 kt
Visibility
>6SM
Weather
FCST
Clouds
OVC015
📖 Plain English Explanation:

Winds from the West (280°) at 12 kt. Visibility will be excellent at more than 6SM. Weather conditions: FCST. 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.