North Bay Jack Garland Airport

CYYB / YYB

North Bay, CA

Current TAF Forecast

Raw TAF:
TAF CYYB 041940Z 0420/0508 24012KT P6SM FEW030 FM042200 24010KT P6SM BKN025 BKN180 TEMPO 0422/0502 BKN020 BKN180 FM050200 VRB03KT P6SM SCT020 OVC050 TEMPO 0502/0504 4SM -SN FEW008 OVC020 FM050400 VRB03KT 4SM -SN SCT008 OVC015 TEMPO 0504/0508 2SM -FZDZ -SN OVC008 PROB40 0504/0508 1SM -FZDZ -SN RMK NXT FCST BY 050200Z

Detailed TAF Table

Parameter
Thu
00:00Z
+-1h
Thu
01:00Z
+0h
Thu
02:00Z
+1h
Thu
03:00Z
+2h
Thu
04:00Z
+3h
Thu
05:00Z
+4h
Thu
06:00Z
+5h
Wind Dir
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
240°
SW
Wind Speed
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
Visibility
>6SM
>6SM
4SM
4SM
1SM
1SM
1SM
Weather
☀️ Clear
☀️ Clear
Light Snow
-SN
Light Snow
-SN
Light Freezing Drizzle, Light Snow, FCST
-FZDZ -SN FCST
40%
Light Freezing Drizzle, Light Snow, FCST
-FZDZ -SN FCST
40%
Light Freezing Drizzle, Light Snow, FCST
-FZDZ -SN FCST
40%
Clouds
FEW030
FEW030
FEW008
OVC020
FEW008
OVC020
☀️ CLR
☀️ CLR
☀️ CLR
Ceiling
🌤️ Unlimited
🌤️ Unlimited
2,000 ft
AGL
2,000 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules VFR VFR MVFR MVFR IFR IFR IFR
Day/Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 06:26Z
🌙
Night
🌅 06:26Z
🌅
Dawn
🌅 06:26Z
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
240° at 12 kt
Visibility
>6SM
Clouds
FEW030
📖 Plain English Explanation:

This is the base forecast condition. Winds from the West-Southwest (240°) at 12 kt. Visibility will be excellent at more than 6SM. Few clouds at 3000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM042200 22:00Z - 04:00Z
MVFR
Wind
240° at 10 kt
Visibility
>6SM
Clouds
BKN025 BKN180
📖 Plain English Explanation:

Winds from the West-Southwest (240°) at 10 kt. Visibility will be excellent at more than 6SM. Broken clouds at 2500 feet, Broken clouds at 18000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 22:00Z - 02:00Z
MVFR
Clouds
BKN020 BKN180
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Broken clouds at 2000 feet, Broken clouds at 18000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM050200 02:00Z - 08:00Z
VFR
Wind
VRB° at 3 kt
Visibility
>6SM
Clouds
SCT020 OVC050
📖 Plain English Explanation:

Winds will be variable in direction at 3 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 2000 feet, Overcast skies at 5000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 02:00Z - 04:00Z
MVFR
Visibility
4SM
Weather
Light Snow
Clouds
FEW008 OVC020
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be good at 4SM. Weather conditions: Light Snow. Few clouds at 800 feet, Overcast skies at 2000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM050400 04:00Z - 10:00Z
MVFR
Wind
VRB° at 3 kt
Visibility
4SM
Weather
Light Snow
Clouds
SCT008 OVC015
📖 Plain English Explanation:

Winds will be variable in direction at 3 kt. Visibility will be good at 4SM. Weather conditions: Light Snow. Scattered clouds at 800 feet, Overcast skies at 1500 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 04:00Z - 08:00Z
IFR
Visibility
2SM
Weather
Light Freezing Drizzle, Light Snow
Clouds
OVC008
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 2SM. Weather conditions: Light Freezing Drizzle, Light Snow. Overcast skies at 800 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

PROB40 04:00Z - 08:00Z
IFR
Visibility
1SM
Weather
Light Freezing Drizzle, Light Snow, FCST
📖 Plain English Explanation:

There is a 40% probability of: Visibility will be moderate at 1SM. Weather conditions: Light Freezing Drizzle, Light Snow, FCST. Instrument Flight Rules (IFR) conditions - instrument flying required.

📚 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.