Portland International Jetport

KPWM / PWM

Portland, US

Current TAF Forecast

Raw TAF:
TAF KPWM 040852Z 0409/0506 VRB03KT 6SM BR BKN035 FM041200 26005KT P6SM FEW250

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
VRB
260°
W
260°
W
260°
W
260°
W
260°
W
260°
W
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
Wind Speed
3 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
3 kt
3 kt
3 kt
3 kt
3 kt
3 kt
3 kt
3 kt
3 kt
3 kt
3 kt
Visibility
6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
6SM
Weather
Mist
BR
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Clouds
BKN035
FEW250
FEW250
FEW250
FEW250
FEW250
FEW250
BKN035
BKN035
BKN035
BKN035
BKN035
BKN035
BKN035
BKN035
BKN035
BKN035
BKN035
Ceiling
3,500 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 17:33Z
☀️
Day
🌇 17:33Z
☀️
Day
🌇 17:33Z
🌇
Dusk
🌇 17:33Z
🌙
Night
🌇 17:33Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 06:25Z
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
VRB° at 3 kt
Visibility
6SM
Weather
Mist
Clouds
BKN035
📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 3 kt. Visibility will be excellent at 6SM. Weather conditions: Mist. Broken clouds at 3500 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM041200 12:00Z - 18:00Z
VFR
Wind
260° at 5 kt
Visibility
>6SM
Clouds
FEW250
📖 Plain English Explanation:

Winds from the West (260°) at 5 kt. Visibility will be excellent at more than 6SM. Few clouds at 25000 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.