Groton New London Airport

KGON / GON

Groton, US

Current TAF Forecast

Raw TAF:
TAF KGON 150044Z 1501/1524 VRB04KT 2SM -SHRA BR OVC002 FM150200 VRB03KT 1/2SM FG VCSH BKN002 OVC008 FM150300 34004KT 1SM BR BKN004 OVC008 TEMPO 1503/1507 1/2SM FG FM151200 33008KT P6SM SCT006 BKN020 FM151500 31012KT P6SM VCSH FEW006 SCT020 BKN030 FM152200 34014KT P6SM BKN020 OVC030

Detailed TAF Table

Parameter
Fri
01:00Z
+-1h
Fri
02:00Z
+0h
Fri
03:00Z
+1h
Fri
04:00Z
+2h
Fri
05:00Z
+3h
Fri
06:00Z
+4h
Fri
07:00Z
+5h
Fri
08:00Z
+6h
Fri
09:00Z
+7h
Fri
10:00Z
+8h
Fri
11:00Z
+9h
Fri
12:00Z
+10h
Fri
13:00Z
+11h
Fri
14:00Z
+12h
Fri
15:00Z
+13h
Fri
16:00Z
+14h
Fri
17:00Z
+15h
Fri
18:00Z
+16h
Fri
19:00Z
+17h
Fri
20:00Z
+18h
Fri
21:00Z
+19h
Fri
22:00Z
+20h
Wind Dir
VRB
VRB
VRB
VRB
VRB
VRB
340°
N
340°
N
VRB
VRB
VRB
330°
NW
330°
NW
330°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
310°
NW
VRB
340°
N
Wind Speed
4 kt
3 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
8 kt
8 kt
8 kt
12 kt
12 kt
12 kt
12 kt
12 kt
12 kt
4 kt
14 kt
Visibility
2SM
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
1SM
1SM
2SM
2SM
2SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
2SM
>6SM
Weather
Light Showers Rain, Mist
-SHRA BR
Fog
FG
Fog
FG
Fog
FG
Fog
FG
Fog
FG
Mist
BR
Mist
BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Light Showers Rain, Mist
-SHRA BR
☀️ Clear
Clouds
OVC002
BKN002
OVC008
☀️ CLR
☀️ CLR
☀️ CLR
☀️ CLR
BKN004
OVC008
BKN004
OVC008
OVC002
OVC002
OVC002
SCT006
BKN020
SCT006
BKN020
SCT006
BKN020
FEW006
SCT020
FEW006
SCT020
FEW006
SCT020
FEW006
SCT020
FEW006
SCT020
FEW006
SCT020
OVC002
BKN020
OVC030
Ceiling
200 ft
AGL
200 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
400 ft
AGL
400 ft
AGL
200 ft
AGL
200 ft
AGL
200 ft
AGL
2,000 ft
AGL
2,000 ft
AGL
2,000 ft
AGL
3,000 ft
AGL
3,000 ft
AGL
3,000 ft
AGL
3,000 ft
AGL
3,000 ft
AGL
3,000 ft
AGL
200 ft
AGL
2,000 ft
AGL
Flight Rules LIFR LIFR IFR IFR IFR IFR LIFR LIFR LIFR LIFR LIFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR LIFR MVFR
Day/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
☀️
Day
🌇 19:02Z
☀️
Day
🌇 19:02Z
☀️
Day
🌇 19:02Z
🌙
Night
🌇 19:02Z
🌙
Night
🌇 19:02Z
🌙
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
VRB° at 4 kt
Visibility
2SM
Weather
Light Showers Rain, Mist
Clouds
OVC002
📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 4 kt. Visibility will be moderate at 2SM. Weather conditions: Light Showers Rain, Mist. Overcast skies at 200 feet. Low IFR conditions - challenging even for instrument operations.

FM150200 02:00Z - 08:00Z
LIFR
Wind
VRB° at 3 kt
Visibility
1/2SM
Weather
Fog
Clouds
BKN002 OVC008
📖 Plain English Explanation:

Winds will be variable in direction at 3 kt. Visibility will be moderate at 1/2SM. Weather conditions: Fog. Broken clouds at 200 feet, Overcast skies at 800 feet. Low IFR conditions - challenging even for instrument operations.

FM150300 03:00Z - 09:00Z
LIFR
Wind
340° at 4 kt
Visibility
1SM
Weather
Mist
Clouds
BKN004 OVC008
📖 Plain English Explanation:

Winds from the North-Northwest (340°) at 4 kt. Visibility will be moderate at 1SM. Weather conditions: Mist. Broken clouds at 400 feet, Overcast skies at 800 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 03:00Z - 07:00Z
IFR
Visibility
1/2SM
Weather
Fog
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 1/2SM. Weather conditions: Fog. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM151200 12:00Z - 18:00Z
MVFR
Wind
330° at 8 kt
Visibility
>6SM
Clouds
SCT006 BKN020
📖 Plain English Explanation:

Winds from the North-Northwest (330°) at 8 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 600 feet, Broken clouds at 2000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM151500 15:00Z - 21:00Z
VFR
Wind
310° at 12 kt
Visibility
>6SM
Clouds
FEW006 SCT020 BKN030
📖 Plain English Explanation:

Winds from the Northwest (310°) at 12 kt. Visibility will be excellent at more than 6SM. Few clouds at 600 feet, Scattered clouds at 2000 feet, Broken clouds at 3000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM152200 22:00Z - 04:00Z
MVFR
Wind
340° at 14 kt
Visibility
>6SM
Clouds
BKN020 OVC030
📖 Plain English Explanation:

Winds from the North-Northwest (340°) at 14 kt. Visibility will be excellent at more than 6SM. Broken clouds at 2000 feet, Overcast skies at 3000 feet. Marginal VFR conditions - some restrictions for visual flying.

📚 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.