Groton New London Airport

KGON / GON

Groton, US

Current TAF Forecast

Raw TAF:
TAF KGON 041120Z 0412/0512 29004KT P6SM SCT050 SCT250 FM041400 26010KT P6SM FEW060 SCT250 PROB30 0420/0424 4SM -TSRA BKN040CB FM050000 29005KT P6SM VCSH BKN060 PROB30 0500/0503 5SM -SHRA BKN040 FM050600 VRB04KT P6SM SCT050 BKN100

Detailed TAF Table

Parameter
Sat
13:00Z
+-1h
Sat
14:00Z
+0h
Sat
15:00Z
+1h
Sat
16:00Z
+2h
Sat
17:00Z
+3h
Sat
18:00Z
+4h
Sat
19:00Z
+5h
Sat
20:00Z
+6h
Sat
21:00Z
+7h
Sat
22:00Z
+8h
Sat
23:00Z
+9h
Sun
00:00Z
+10h
Sun
01:00Z
+11h
Sun
02:00Z
+12h
Sun
03:00Z
+13h
Sun
04:00Z
+14h
Sun
05:00Z
+15h
Sun
06:00Z
+16h
Sun
07:00Z
+17h
Sun
08:00Z
+18h
Sun
09:00Z
+19h
Sun
10:00Z
+20h
Wind Dir
290°
W
260°
W
260°
W
260°
W
260°
W
260°
W
260°
W
290°
W
290°
W
290°
W
290°
W
290°
W
290°
W
290°
W
290°
W
290°
W
290°
W
VRB
VRB
VRB
VRB
VRB
Wind Speed
4 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
4 kt
5 kt
5 kt
5 kt
4 kt
4 kt
4 kt
4 kt
4 kt
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
4SM
4SM
4SM
4SM
5SM
5SM
5SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Light Thunderstorm Rain
-TSRA
30%
Light Thunderstorm Rain
-TSRA
30%
Light Thunderstorm Rain
-TSRA
30%
Light Thunderstorm Rain
-TSRA
30%
Light Showers Rain
-SHRA
30%
Light Showers Rain
-SHRA
30%
Light Showers Rain
-SHRA
30%
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
SCT050
SCT250
FEW060
SCT250
FEW060
SCT250
FEW060
SCT250
FEW060
SCT250
FEW060
SCT250
FEW060
SCT250
BKN040CB
BKN040CB
BKN040CB
BKN040CB
BKN040
BKN040
BKN040
BKN060
BKN060
BKN060
SCT050
BKN100
SCT050
BKN100
SCT050
BKN100
SCT050
BKN100
SCT050
BKN100
Ceiling
🌤️ Unlimited
🌤️ 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
4,000 ft
AGL
4,000 ft
AGL
6,000 ft
AGL
6,000 ft
AGL
6,000 ft
AGL
10,000 ft
AGL
10,000 ft
AGL
10,000 ft
AGL
10,000 ft
AGL
10,000 ft
AGL
Flight Rules VFR VFR VFR VFR VFR VFR VFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR VFR VFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 19:17Z
☀️
Day
🌇 19:17Z
☀️
Day
🌇 19:17Z
🌙
Night
🌇 19:17Z
🌙
Night
🌇 19:17Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:42Z
🌙
Night
🌅 04:42Z
🌙
Night
🌅 04:42Z
☀️
Day
🌅 04:42Z
☀️
Day
🌅 04:42Z
☀️
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
290° at 4 kt
Visibility
>6SM
Clouds
SCT050 SCT250
📖 Plain English Explanation:

This is the base forecast condition. Winds from the West-Northwest (290°) at 4 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 5000 feet, Scattered clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM041400 14:00Z - 20:00Z
VFR
Wind
260° at 10 kt
Visibility
>6SM
Clouds
FEW060 SCT250
📖 Plain English Explanation:

Winds from the West (260°) at 10 kt. Visibility will be excellent at more than 6SM. Few clouds at 6000 feet, Scattered clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 20:00Z - 00:00Z
MVFR
Visibility
4SM
Weather
Light Thunderstorm Rain
Clouds
BKN040CB
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be good at 4SM. Weather conditions: Light Thunderstorm Rain. Broken clouds at 4000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM050000 00:00Z - 06:00Z
VFR
Wind
290° at 5 kt
Visibility
>6SM
Clouds
BKN060
📖 Plain English Explanation:

Winds from the West-Northwest (290°) at 5 kt. Visibility will be excellent at more than 6SM. Broken clouds at 6000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 00:00Z - 03:00Z
MVFR
Visibility
5SM
Weather
Light Showers Rain
Clouds
BKN040
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be good at 5SM. Weather conditions: Light Showers Rain. Broken clouds at 4000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM050600 06:00Z - 12:00Z
VFR
Wind
VRB° at 4 kt
Visibility
>6SM
Clouds
SCT050 BKN100
📖 Plain English Explanation:

Winds will be variable in direction at 4 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 5000 feet, Broken clouds at 10000 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.