Greenbrier Valley Airport

KLWB / LWB

Lewisburg, US

Current TAF Forecast

Raw TAF:
TAF KLWB 041720Z 0418/0518 23005KT P6SM SCT050 FM042000 26007KT P6SM VCTS BKN050CB FM050000 00000KT P6SM SCT080 BKN250 FM050600 06001KT 4SM BR BKN250 FM050900 00000KT 1/4SM FG OVC001 FM051400 00000KT P6SM SCT200

Detailed TAF Table

Parameter
Sat
20:00Z
+-1h
Sat
21:00Z
+0h
Sat
22:00Z
+1h
Sat
23:00Z
+2h
Sun
00:00Z
+3h
Sun
01:00Z
+4h
Sun
02:00Z
+5h
Sun
03:00Z
+6h
Sun
04:00Z
+7h
Sun
05:00Z
+8h
Sun
06:00Z
+9h
Sun
07:00Z
+10h
Sun
08:00Z
+11h
Sun
09:00Z
+12h
Sun
10:00Z
+13h
Sun
11:00Z
+14h
Sun
12:00Z
+15h
Sun
13:00Z
+16h
Sun
14:00Z
+17h
Sun
15:00Z
+18h
Sun
16:00Z
+19h
Wind Dir
230°
SW
230°
SW
230°
SW
230°
SW
-- -- -- -- -- --
60°
NE
60°
NE
60°
NE
-- -- -- -- -- -- -- --
Wind Speed
5 kt
5 kt
5 kt
5 kt
-- -- -- -- -- --
1 kt
1 kt
1 kt
-- -- -- -- -- -- -- --
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
4SM
4SM
4SM
1/4SM
1/4SM
1/4SM
1/4SM
1/4SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Mist
BR
Mist
BR
Mist
BR
Fog
FG
Fog
FG
Fog
FG
Fog
FG
Fog
FG
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
SCT050
SCT050
SCT050
SCT050
SCT080
BKN250
SCT080
BKN250
SCT080
BKN250
SCT080
BKN250
SCT080
BKN250
SCT080
BKN250
BKN250
BKN250
BKN250
OVC001
OVC001
OVC001
OVC001
OVC001
SCT200
SCT200
SCT200
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
100 ft
AGL
100 ft
AGL
100 ft
AGL
100 ft
AGL
100 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR MVFR MVFR MVFR LIFR LIFR LIFR LIFR LIFR VFR VFR VFR
Day/Night
🌙
Night
🌇 19:12Z
🌙
Night
🌇 19:12Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:48Z
🌙
Night
🌅 04:48Z
🌙
Night
🌅 04:48Z
☀️
Day
🌅 04:48Z
☀️
Day
🌅 04:48Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
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
230° at 5 kt
Visibility
>6SM
Clouds
SCT050
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southwest (230°) at 5 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 5000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM042000 20:00Z - 02:00Z
MVFR
Wind
260° at 7 kt
Visibility
>6SM
Clouds
BKN050CB
📖 Plain English Explanation:

Winds from the West (260°) at 7 kt. Visibility will be excellent at more than 6SM. Broken clouds at 5000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM050000 00:00Z - 06:00Z
VFR
Wind
0° at 0 kt
Visibility
>6SM
Clouds
SCT080 BKN250
📖 Plain English Explanation:

Winds from the North (0°) at 0 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 8000 feet, Broken clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM050600 06:00Z - 12:00Z
MVFR
Wind
60° at 1 kt
Visibility
4SM
Weather
Mist
Clouds
BKN250
📖 Plain English Explanation:

Winds from the East-Northeast (60°) at 1 kt. Visibility will be good at 4SM. Weather conditions: Mist. Broken clouds at 25000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM050900 09:00Z - 15:00Z
LIFR
Wind
0° at 0 kt
Visibility
1/4SM
Weather
Fog
Clouds
OVC001
📖 Plain English Explanation:

Winds from the North (0°) at 0 kt. Visibility will be moderate at 1/4SM. Weather conditions: Fog. Overcast skies at 100 feet. Low IFR conditions - challenging even for instrument operations.

FM051400 14:00Z - 20:00Z
VFR
Wind
0° at 0 kt
Visibility
>6SM
Clouds
SCT200
📖 Plain English Explanation:

Winds from the North (0°) at 0 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 20000 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.