Island Lake Airport

CYIV / YIV

Island Lake, CA

Current TAF Forecast

Raw TAF:
TAF CYIV 150645Z 1507/1519 VRB03KT 3SM -SN BR OVC004 TEMPO 1507/1515 P6SM NSW OVC008 FM151500 12006KT 3/4SM -SN BR OVC005 TEMPO 1515/1519 3SM -SN OVC010 RMK FCST BASED ON AUTO OBS. NXT FCST BY 151300Z

Detailed TAF Table

Parameter
Sun
11:00Z
+-1h
Sun
12:00Z
+0h
Sun
13:00Z
+1h
Sun
14:00Z
+2h
Sun
15:00Z
+3h
Sun
16:00Z
+4h
Sun
17:00Z
+5h
Wind Dir
VRB
VRB
VRB
VRB
VRB
VRB
VRB
Wind Speed
3 kt
3 kt
3 kt
3 kt
3 kt
3 kt
3 kt
Visibility
3SM
3SM
3SM
3SM
3SM
3SM
3SM
Weather
Light Snow, Mist
-SN BR
Light Snow, Mist
-SN BR
Light Snow, Mist
-SN BR
Light Snow, Mist
-SN BR
Light Snow, FCST, FCST
-SN FCST FCST
Light Snow, FCST, FCST
-SN FCST FCST
Light Snow, FCST, FCST
-SN FCST FCST
Clouds
OVC004
OVC004
OVC004
OVC004
OVC010
OVC010
OVC010
Ceiling
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
Flight Rules LIFR LIFR LIFR LIFR IFR IFR IFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 17:03Z
☀️
Day
🌇 17:03Z
☀️
Day
🌇 17:03Z
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
VRB° at 3 kt
Visibility
3SM
Weather
Light Snow, Mist
Clouds
OVC004
📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 3 kt. Visibility will be good at 3SM. Weather conditions: Light Snow, Mist. Overcast skies at 400 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 07:00Z - 15:00Z
IFR
Visibility
>6SM
Clouds
OVC008
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be excellent at more than 6SM. Overcast skies at 800 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM151500 15:00Z - 21:00Z
IFR
Wind
120° at 6 kt
Visibility
3/4SM
Weather
Light Snow, Mist
Clouds
OVC005
📖 Plain English Explanation:

Winds from the East-Southeast (120°) at 6 kt. Visibility will be good at 3/4SM. Weather conditions: Light Snow, Mist. Overcast skies at 500 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

TEMPO 15:00Z - 19:00Z
IFR
Visibility
3SM
Weather
Light Snow, FCST, FCST
Clouds
OVC010
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be good at 3SM. Weather conditions: Light Snow, FCST, FCST. Overcast skies at 1000 feet. 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.