California Redwood Coast-Humboldt County Airport

KACV / ACV

Arcata/Eureka, US

Current TAF Forecast

Raw TAF:
TAF KACV 270542Z 2706/2806 33005KT 4SM BR OVC007 FM270900 36005KT 2SM BR OVC004 FM271200 VRB04KT 4SM BR OVC004 FM271800 32011KT 5SM HZ OVC007 FM272100 32016KT P6SM BKN015 FM280000 33018KT P6SM BKN250

Detailed TAF Table

Parameter
Sat
06:00Z
+-1h
Sat
07:00Z
+0h
Sat
08:00Z
+1h
Sat
09:00Z
+2h
Sat
10:00Z
+3h
Sat
11:00Z
+4h
Sat
12:00Z
+5h
Sat
13:00Z
+6h
Sat
14:00Z
+7h
Sat
15:00Z
+8h
Sat
16:00Z
+9h
Sat
17:00Z
+10h
Sat
18:00Z
+11h
Sat
19:00Z
+12h
Sat
20:00Z
+13h
Sat
21:00Z
+14h
Sat
22:00Z
+15h
Sat
23:00Z
+16h
Sun
00:00Z
+17h
Sun
01:00Z
+18h
Sun
02:00Z
+19h
Sun
03:00Z
+20h
Sun
04:00Z
+21h
Wind Dir
330°
NW
330°
NW
330°
NW
360°
N
360°
N
360°
N
VRB
VRB
VRB
VRB
VRB
VRB
320°
NW
320°
NW
320°
NW
320°
NW
320°
NW
320°
NW
330°
NW
330°
NW
330°
NW
330°
NW
330°
NW
Wind Speed
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
11 kt
11 kt
11 kt
16 kt
16 kt
16 kt
18 kt
18 kt
18 kt
18 kt
18 kt
Visibility
4SM
4SM
4SM
2SM
2SM
2SM
4SM
4SM
4SM
4SM
4SM
4SM
5SM
5SM
5SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Haze
HZ
Haze
HZ
Haze
HZ
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
OVC007
OVC007
OVC007
OVC004
OVC004
OVC004
OVC004
OVC004
OVC004
OVC004
OVC004
OVC004
OVC007
OVC007
OVC007
BKN015
BKN015
BKN015
BKN250
BKN250
BKN250
BKN250
BKN250
Ceiling
700 ft
AGL
700 ft
AGL
700 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
700 ft
AGL
700 ft
AGL
700 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
Flight Rules IFR IFR IFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR IFR IFR IFR MVFR MVFR MVFR VFR VFR VFR VFR VFR
Day/Night
☀️
Day
🌅 04:41Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 19:18Z
☀️
Day
🌇 19:18Z
☀️
Day
🌇 19:18Z
🌙
Night
🌇 19:18Z
🌙
Night
🌇 19:18Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:41Z
🌙
Night
🌅 04:41Z
🌙
Night
🌅 04:41Z
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
IFR
Wind
330° at 5 kt
Visibility
4SM
Weather
Mist
Clouds
OVC007
📖 Plain English Explanation:

This is the base forecast condition. Winds from the North-Northwest (330°) at 5 kt. Visibility will be good at 4SM. Weather conditions: Mist. Overcast skies at 700 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM270900 09:00Z - 15:00Z
LIFR
Wind
360° at 5 kt
Visibility
2SM
Weather
Mist
Clouds
OVC004
📖 Plain English Explanation:

Winds from the North (360°) at 5 kt. Visibility will be moderate at 2SM. Weather conditions: Mist. Overcast skies at 400 feet. Low IFR conditions - challenging even for instrument operations.

FM271200 12:00Z - 18:00Z
LIFR
Wind
VRB° at 4 kt
Visibility
4SM
Weather
Mist
Clouds
OVC004
📖 Plain English Explanation:

Winds will be variable in direction at 4 kt. Visibility will be good at 4SM. Weather conditions: Mist. Overcast skies at 400 feet. Low IFR conditions - challenging even for instrument operations.

FM271800 18:00Z - 00:00Z
IFR
Wind
320° at 11 kt
Visibility
5SM
Weather
Haze
Clouds
OVC007
📖 Plain English Explanation:

Winds from the Northwest (320°) at 11 kt. Visibility will be good at 5SM. Weather conditions: Haze. Overcast skies at 700 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM272100 21:00Z - 03:00Z
MVFR
Wind
320° at 16 kt
Visibility
>6SM
Clouds
BKN015
📖 Plain English Explanation:

Winds from the Northwest (320°) at 16 kt. Visibility will be excellent at more than 6SM. Broken clouds at 1500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM280000 00:00Z - 06:00Z
VFR
Wind
330° at 18 kt
Visibility
>6SM
Clouds
BKN250
📖 Plain English Explanation:

Winds from the North-Northwest (330°) at 18 kt. Visibility will be excellent at more than 6SM. Broken clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) 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.