Antonio B. Won Pat International Airport

PGUM / GUM

Hagåtña, GU

Current TAF Forecast

Raw TAF:
TAF PGUM 031737Z 0318/0424 02011KT P6SM VCSH FEW025 SCT090 FM041200 36012G18KT P6SM VCSH SCT018 BKN050 PROB30 0412/0418 35014G22KT 4SM SHRA SCT016 BKN025

Detailed TAF Table

Parameter
Fri
23:00Z
+-1h
Sat
00:00Z
+0h
Sat
01:00Z
+1h
Sat
02:00Z
+2h
Sat
03:00Z
+3h
Sat
04:00Z
+4h
Sat
05:00Z
+5h
Sat
06:00Z
+6h
Sat
07:00Z
+7h
Sat
08:00Z
+8h
Sat
09:00Z
+9h
Sat
10:00Z
+10h
Sat
11:00Z
+11h
Sat
12:00Z
+12h
Sat
13:00Z
+13h
Sat
14:00Z
+14h
Sat
15:00Z
+15h
Sat
16:00Z
+16h
Sat
17:00Z
+17h
Sat
18:00Z
+18h
Sat
19:00Z
+19h
Sat
20:00Z
+20h
Sat
21:00Z
+21h
Sat
22:00Z
+22h
Wind Dir
20°
N
20°
N
20°
N
20°
N
20°
N
20°
N
20°
N
20°
N
20°
N
20°
N
20°
N
20°
N
20°
N
350°
N
350°
N
350°
N
350°
N
350°
N
350°
N
20°
N
20°
N
20°
N
20°
N
20°
N
Wind Speed
11 kt
11 kt
11 kt
11 kt
11 kt
11 kt
11 kt
11 kt
11 kt
11 kt
11 kt
11 kt
11 kt
14 kt
G22 kt
14 kt
G22 kt
14 kt
G22 kt
14 kt
G22 kt
14 kt
G22 kt
14 kt
G22 kt
11 kt
11 kt
11 kt
11 kt
11 kt
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
4SM
4SM
4SM
4SM
4SM
4SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Showers Rain
SHRA
30%
Showers Rain
SHRA
30%
Showers Rain
SHRA
30%
Showers Rain
SHRA
30%
Showers Rain
SHRA
30%
Showers Rain
SHRA
30%
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
SCT016
BKN025
SCT016
BKN025
SCT016
BKN025
SCT016
BKN025
SCT016
BKN025
SCT016
BKN025
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
FEW025
SCT090
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
2,500 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR MVFR MVFR MVFR MVFR MVFR MVFR VFR VFR VFR VFR VFR
Day/Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:32Z
🌙
Night
🌅 05:32Z
🌙
Night
🌅 05:32Z
☀️
Day
🌅 05:32Z
☀️
Day
🌅 05:32Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:27Z
☀️
Day
🌇 18:27Z
☀️
Day
🌇 18:27Z
🌙
Night
🌇 18:27Z
🌙
Night
🌇 18:27Z
🌙
Night
🌙
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
VFR
Wind
20° at 11 kt
Visibility
>6SM
Clouds
FEW025 SCT090
📖 Plain English Explanation:

This is the base forecast condition. Winds from the North-Northeast (20°) at 11 kt. Visibility will be excellent at more than 6SM. Few clouds at 2500 feet, Scattered clouds at 9000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM041200 12:00Z - 18:00Z
VFR
Wind
360° at 12 kt
Gusts: 18 kt
Visibility
>6SM
Clouds
SCT018 BKN050
📖 Plain English Explanation:

Winds from the North (360°) at 12 kt. Gusts up to 18 kt are expected. Visibility will be excellent at more than 6SM. Scattered clouds at 1800 feet, Broken clouds at 5000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 12:00Z - 18:00Z
MVFR
Wind
350° at 14 kt
Gusts: 22 kt
Visibility
4SM
Weather
Showers Rain
Clouds
SCT016 BKN025
📖 Plain English Explanation:

There is a 30% probability of: Winds from the North (350°) at 14 kt. Gusts up to 22 kt are expected. Visibility will be good at 4SM. Weather conditions: Showers Rain. Scattered clouds at 1600 feet, Broken clouds at 2500 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.