Saint John Airport

CYSJ / YSJ

Saint John, CA

Current TAF Forecast

Raw TAF:
TAF CYSJ 081740Z 0818/0906 34010G20KT P6SM FEW025 SCT240 TEMPO 0818/0824 35012G22KT FM090000 34010G22KT P6SM SCT030 BKN240 FM090300 34010G20KT P6SM -SN SCT020 BKN025 RMK NXT FCST BY 090000Z

Detailed TAF Table

Parameter
Sun
22:00Z
+-1h
Sun
23:00Z
+0h
Mon
00:00Z
+1h
Mon
01:00Z
+2h
Mon
02:00Z
+3h
Mon
03:00Z
+4h
Mon
04:00Z
+5h
Wind Dir
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
340°
N
Wind Speed
10 kt
G20 kt
10 kt
G20 kt
10 kt
G22 kt
10 kt
G22 kt
10 kt
G22 kt
10 kt
G20 kt
10 kt
G20 kt
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Light Snow, FCST
-SN FCST
Light Snow, FCST
-SN FCST
Clouds
FEW025
SCT240
FEW025
SCT240
SCT030
BKN240
SCT030
BKN240
SCT030
BKN240
SCT020
BKN025
SCT020
BKN025
Ceiling
🌤️ Unlimited
🌤️ Unlimited
24,000 ft
AGL
24,000 ft
AGL
24,000 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
Flight Rules VFR VFR VFR VFR VFR MVFR MVFR
Day/Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 06:56Z
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 occurrenceAGL: Above Ground Level

Forecast Periods

BASE
VFR
Wind
340° at 10 kt
Gusts: 20 kt
Visibility
>6SM
Clouds
FEW025 SCT240
📖 Plain English Explanation:

This is the base forecast condition. Winds from the North-Northwest (340°) at 10 kt. Gusts up to 20 kt are expected. Visibility will be excellent at more than 6SM. Few clouds at 2500 feet, Scattered clouds at 24000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 18:00Z - 00:00Z
VFR
Wind
350° at 12 kt
Gusts: 22 kt
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds from the North (350°) at 12 kt. Gusts up to 22 kt are expected. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM090000 00:00Z - 06:00Z
VFR
Wind
340° at 10 kt
Gusts: 22 kt
Visibility
>6SM
Clouds
SCT030 BKN240
📖 Plain English Explanation:

Winds from the North-Northwest (340°) at 10 kt. Gusts up to 22 kt are expected. Visibility will be excellent at more than 6SM. Scattered clouds at 3000 feet, Broken clouds at 24000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM090300 03:00Z - 09:00Z
MVFR
Wind
340° at 10 kt
Gusts: 20 kt
Visibility
>6SM
Weather
Light Snow, FCST
Clouds
SCT020 BKN025
📖 Plain English Explanation:

Winds from the North-Northwest (340°) at 10 kt. Gusts up to 20 kt are expected. Visibility will be excellent at more than 6SM. Weather conditions: Light Snow, FCST. Scattered clouds at 2000 feet, Broken clouds at 2500 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.