Trenton Mercer Airport

KTTN / TTN

Ewing Township, US

Current TAF Forecast

Raw TAF:
TAF KTTN 151723Z 1518/1618 33010G18KT P6SM BKN040 FM152200 33008KT P6SM FEW050 BKN250 FM160300 VRB03KT P6SM SCT250 FM161400 22008KT P6SM SKC

Detailed TAF Table

Parameter
Fri
18:00Z
+-1h
Fri
19:00Z
+0h
Fri
20:00Z
+1h
Fri
21:00Z
+2h
Fri
22:00Z
+3h
Fri
23:00Z
+4h
Sat
00:00Z
+5h
Sat
01:00Z
+6h
Sat
02:00Z
+7h
Sat
03:00Z
+8h
Sat
04:00Z
+9h
Sat
05:00Z
+10h
Sat
06:00Z
+11h
Sat
07:00Z
+12h
Sat
08:00Z
+13h
Sat
09:00Z
+14h
Sat
10:00Z
+15h
Sat
11:00Z
+16h
Sat
12:00Z
+17h
Sat
13:00Z
+18h
Sat
14:00Z
+19h
Sat
15:00Z
+20h
Sat
16:00Z
+21h
Wind Dir
330°
NW
330°
NW
330°
NW
330°
NW
330°
NW
330°
NW
330°
NW
330°
NW
330°
NW
VRB
VRB
VRB
VRB
VRB
VRB
330°
NW
330°
NW
330°
NW
330°
NW
330°
NW
220°
SW
220°
SW
220°
SW
Wind Speed
10 kt
G18 kt
10 kt
G18 kt
10 kt
G18 kt
10 kt
G18 kt
8 kt
G18 kt
8 kt
G18 kt
8 kt
G18 kt
8 kt
G18 kt
8 kt
G18 kt
3 kt
G18 kt
3 kt
G18 kt
3 kt
G18 kt
3 kt
G18 kt
3 kt
G18 kt
3 kt
G18 kt
10 kt
G18 kt
10 kt
G18 kt
10 kt
G18 kt
10 kt
G18 kt
10 kt
G18 kt
8 kt
G18 kt
8 kt
G18 kt
8 kt
G18 kt
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
BKN040
BKN040
BKN040
BKN040
FEW050
BKN250
FEW050
BKN250
FEW050
BKN250
FEW050
BKN250
FEW050
BKN250
SCT250
SCT250
SCT250
SCT250
SCT250
SCT250
BKN040
BKN040
BKN040
BKN040
BKN040
CLR
CLR
CLR
Ceiling
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
4,000 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR
Day/Night
☀️
Day
🌇 19:01Z
☀️
Day
🌇 19:01Z
🌙
Night
🌇 19:01Z
🌙
Night
🌇 19:01Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:57Z
🌙
Night
🌅 04:57Z
🌙
Night
🌅 04:57Z
☀️
Day
🌅 04:57Z
☀️
Day
🌅 04:57Z
☀️
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 occurrence • AGL: Above Ground Level

Forecast Periods

BASE
VFR
Wind
330° at 10 kt
Gusts: 18 kt
Visibility
>6SM
Clouds
BKN040
📖 Plain English Explanation:

This is the base forecast condition. Winds from the North-Northwest (330°) at 10 kt. Gusts up to 18 kt are expected. Visibility will be excellent at more than 6SM. Broken clouds at 4000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM152200 22:00Z - 04:00Z
VFR
Wind
330° at 8 kt
Visibility
>6SM
Clouds
FEW050 BKN250
📖 Plain English Explanation:

Winds from the North-Northwest (330°) at 8 kt. Visibility will be excellent at more than 6SM. Few clouds at 5000 feet, Broken clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM160300 03:00Z - 09:00Z
VFR
Wind
VRB° at 3 kt
Visibility
>6SM
Clouds
SCT250
📖 Plain English Explanation:

Winds will be variable in direction at 3 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM161400 14:00Z - 20:00Z
VFR
Wind
220° at 8 kt
Visibility
>6SM
Clouds
CLR
📖 Plain English Explanation:

Winds from the Southwest (220°) at 8 kt. Visibility will be excellent at more than 6SM. Skies will be clear. 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.