North Bay Jack Garland Airport

CYYB / YYB

North Bay, CA

Current TAF Forecast

Raw TAF:
TAF CYYB 101340Z 1014/1102 12008KT 2 1/2SM -SHRA BR OVC004 TEMPO 1014/1016 P6SM -RA SCT005 OVC020 BECMG 1014/1016 20006KT FM101600 20006KT 5SM -SHRA BR OVC008 TEMPO 1016/1018 P6SM -RA SCT008 OVC025 FM101800 24005KT 5SM -SHRA BR SCT008 OVC020 TEMPO 1018/1102 P6SM -SHRA OVC025 PROB30 1018/1023 2SM TSRA BR BKN008 OVC020CB RMK NXT FCST BY 102000Z

Detailed TAF Table

Parameter
Wed
14:00Z
+-1h
Wed
15:00Z
+0h
Wed
16:00Z
+1h
Wed
17:00Z
+2h
Wed
18:00Z
+3h
Wed
19:00Z
+4h
Wed
20:00Z
+5h
Wed
21:00Z
+6h
Wed
22:00Z
+7h
Wed
23:00Z
+8h
Thu
00:00Z
+9h
Wind Dir
120°
SE
120°
SE
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
Wind Speed
8 kt
8 kt
6 kt
6 kt
6 kt
6 kt
6 kt
6 kt
6 kt
6 kt
6 kt
Visibility
1/2SM
1/2SM
>6SM
>6SM
2SM
2SM
2SM
2SM
2SM
>6SM
>6SM
Weather
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Rain
-RA
Light Rain
-RA
Thunderstorm Rain, Mist, FCST
TSRA BR FCST
30%
Thunderstorm Rain, Mist, FCST
TSRA BR FCST
30%
Thunderstorm Rain, Mist, FCST
TSRA BR FCST
30%
Thunderstorm Rain, Mist, FCST
TSRA BR FCST
30%
Thunderstorm Rain, Mist, FCST
TSRA BR FCST
30%
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Clouds
OVC004
OVC004
SCT008
OVC025
SCT008
OVC025
BKN008
OVC020CB
BKN008
OVC020CB
BKN008
OVC020CB
BKN008
OVC020CB
BKN008
OVC020CB
OVC025
OVC025
Ceiling
400 ft
AGL
400 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
800 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
Flight Rules LIFR LIFR MVFR MVFR LIFR LIFR LIFR LIFR LIFR MVFR MVFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 19:24Z
☀️
Day
🌇 19:24Z
☀️
Day
🌇 19:24Z
🌙
Night
🌇 19:24Z
🌙
Night
🌇 19:24Z
🌙
Night
🌙
Night
🌙
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 occurrenceAGL: Above Ground Level

Forecast Periods

BASE
LIFR
Wind
120° at 8 kt
Visibility
1/2SM
Weather
Light Showers Rain, Mist
Clouds
OVC004
📖 Plain English Explanation:

This is the base forecast condition. Winds from the East-Southeast (120°) at 8 kt. Visibility will be moderate at 1/2SM. Weather conditions: Light Showers Rain, Mist. Overcast skies at 400 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 14:00Z - 16:00Z
MVFR
Visibility
>6SM
Weather
Light Rain
Clouds
SCT005 OVC020
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be excellent at more than 6SM. Weather conditions: Light Rain. Scattered clouds at 500 feet, Overcast skies at 2000 feet. Marginal VFR conditions - some restrictions for visual flying.

BECMG 14:00Z - 16:00Z
VFR
Wind
200° at 6 kt
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the South-Southwest (200°) at 6 kt. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM101600 16:00Z - 22:00Z
IFR
Wind
200° at 6 kt
Visibility
5SM
Weather
Light Showers Rain, Mist
Clouds
OVC008
📖 Plain English Explanation:

Winds from the South-Southwest (200°) at 6 kt. Visibility will be good at 5SM. Weather conditions: Light Showers Rain, Mist. Overcast skies at 800 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

TEMPO 16:00Z - 18:00Z
MVFR
Visibility
>6SM
Weather
Light Rain
Clouds
SCT008 OVC025
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be excellent at more than 6SM. Weather conditions: Light Rain. Scattered clouds at 800 feet, Overcast skies at 2500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM101800 18:00Z - 00:00Z
MVFR
Wind
240° at 5 kt
Visibility
5SM
Weather
Light Showers Rain, Mist
Clouds
SCT008 OVC020
📖 Plain English Explanation:

Winds from the West-Southwest (240°) at 5 kt. Visibility will be good at 5SM. Weather conditions: Light Showers Rain, Mist. Scattered clouds at 800 feet, Overcast skies at 2000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 18:00Z - 02:00Z
MVFR
Visibility
>6SM
Weather
Light Showers Rain
Clouds
OVC025
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be excellent at more than 6SM. Weather conditions: Light Showers Rain. Overcast skies at 2500 feet. Marginal VFR conditions - some restrictions for visual flying.

PROB30 18:00Z - 23:00Z
LIFR
Visibility
2SM
Weather
Thunderstorm Rain, Mist, FCST
Clouds
BKN008 OVC020CB
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be moderate at 2SM. Weather conditions: Thunderstorm Rain, Mist, FCST. Broken clouds at 800 feet, Overcast skies at 2000 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.