Groton New London Airport

KGON / GON

Groton, US

Current TAF Forecast

Raw TAF:
TAF KGON 220831Z 2209/2306 18012G18KT P6SM OVC050 PROB30 2209/2212 -SHRA FM221200 17014G19KT 4SM BR VCSH OVC040 TEMPO 2212/2216 5SM -SHRA OVC015 FM221600 16012G18KT 2SM BR VCSH SCT006 BKN012 FM221900 10008KT 3SM BR BKN006 FM222300 07005KT 3SM BR BKN006

Detailed TAF Table

Parameter
Wed
11:00Z
+-1h
Wed
12:00Z
+0h
Wed
13:00Z
+1h
Wed
14:00Z
+2h
Wed
15:00Z
+3h
Wed
16:00Z
+4h
Wed
17:00Z
+5h
Wed
18:00Z
+6h
Wed
19:00Z
+7h
Wed
20:00Z
+8h
Wed
21:00Z
+9h
Wed
22:00Z
+10h
Wed
23:00Z
+11h
Thu
00:00Z
+12h
Thu
01:00Z
+13h
Thu
02:00Z
+14h
Thu
03:00Z
+15h
Thu
04:00Z
+16h
Wind Dir
180°
S
180°
S
180°
S
180°
S
180°
S
160°
S
160°
S
160°
S
100°
E
100°
E
100°
E
100°
E
70°
E
70°
E
70°
E
70°
E
70°
E
70°
E
Wind Speed
12 kt
G18 kt
12 kt
G18 kt
12 kt
G18 kt
12 kt
G18 kt
12 kt
G18 kt
12 kt
G18 kt
12 kt
G18 kt
12 kt
G18 kt
8 kt
G18 kt
8 kt
G18 kt
8 kt
G18 kt
8 kt
G18 kt
5 kt
G18 kt
5 kt
G18 kt
5 kt
G18 kt
5 kt
G18 kt
5 kt
G18 kt
5 kt
G18 kt
Visibility
>6SM
5SM
5SM
5SM
5SM
2SM
2SM
2SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
3SM
Weather
☀️ Clear
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Clouds
OVC050
OVC015
OVC015
OVC015
OVC015
SCT006
BKN012
SCT006
BKN012
SCT006
BKN012
BKN006
BKN006
BKN006
BKN006
BKN006
BKN006
BKN006
BKN006
BKN006
BKN006
Ceiling
5,000 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,200 ft
AGL
1,200 ft
AGL
1,200 ft
AGL
600 ft
AGL
600 ft
AGL
600 ft
AGL
600 ft
AGL
600 ft
AGL
600 ft
AGL
600 ft
AGL
600 ft
AGL
600 ft
AGL
600 ft
AGL
Flight Rules VFR MVFR MVFR MVFR MVFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:39Z
☀️
Day
🌇 18:39Z
☀️
Day
🌇 18:39Z
🌇
Dusk
🌇 18:39Z
🌙
Night
🌇 18:39Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:19Z
🌙
Night
🌅 05:19Z
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
180° at 12 kt
Gusts: 18 kt
Visibility
>6SM
Clouds
OVC050
📖 Plain English Explanation:

This is the base forecast condition. Winds from the South (180°) at 12 kt. Gusts up to 18 kt are expected. Visibility will be excellent at more than 6SM. Overcast skies at 5000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 09:00Z - 12:00Z
VFR
Weather
Light Showers Rain
📖 Plain English Explanation:

There is a 30% probability of: Weather conditions: Light Showers Rain. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM221200 12:00Z - 18:00Z
MVFR
Wind
170° at 14 kt
Gusts: 19 kt
Visibility
4SM
Weather
Mist
Clouds
OVC040
📖 Plain English Explanation:

Winds from the South (170°) at 14 kt. Gusts up to 19 kt are expected. Visibility will be good at 4SM. Weather conditions: Mist. Overcast skies at 4000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 12:00Z - 16:00Z
MVFR
Visibility
5SM
Weather
Light Showers Rain
Clouds
OVC015
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be good at 5SM. Weather conditions: Light Showers Rain. Overcast skies at 1500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM221600 16:00Z - 22:00Z
IFR
Wind
160° at 12 kt
Gusts: 18 kt
Visibility
2SM
Weather
Mist
Clouds
SCT006 BKN012
📖 Plain English Explanation:

Winds from the South-Southeast (160°) at 12 kt. Gusts up to 18 kt are expected. Visibility will be moderate at 2SM. Weather conditions: Mist. Scattered clouds at 600 feet, Broken clouds at 1200 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM221900 19:00Z - 01:00Z
IFR
Wind
100° at 8 kt
Visibility
3SM
Weather
Mist
Clouds
BKN006
📖 Plain English Explanation:

Winds from the East (100°) at 8 kt. Visibility will be good at 3SM. Weather conditions: Mist. Broken clouds at 600 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM222300 23:00Z - 05:00Z
IFR
Wind
70° at 5 kt
Visibility
3SM
Weather
Mist
Clouds
BKN006
📖 Plain English Explanation:

Winds from the East-Northeast (70°) at 5 kt. Visibility will be good at 3SM. Weather conditions: Mist. Broken clouds at 600 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.