Portland International Jetport

KPWM / PWM

Portland, US

Current TAF Forecast

Raw TAF:
TAF KPWM 172023Z 1720/1818 22005KT 1/2SM SN OVC007 FM172130 VRB04KT 1 1/2SM -SN OVC007 FM172300 25005KT 4SM -SN OVC007 FM180100 25005KT P6SM BKN080

Detailed TAF Table

Parameter
Sat
23:00Z
+-1h
Sun
00:00Z
+0h
Sun
01:00Z
+1h
Sun
02:00Z
+2h
Sun
03:00Z
+3h
Sun
04:00Z
+4h
Sun
05:00Z
+5h
Sun
06:00Z
+6h
Sun
07:00Z
+7h
Sun
08:00Z
+8h
Sun
09:00Z
+9h
Sun
10:00Z
+10h
Sun
11:00Z
+11h
Sun
12:00Z
+12h
Sun
13:00Z
+13h
Sun
14:00Z
+14h
Sun
15:00Z
+15h
Sun
16:00Z
+16h
Wind Dir
220°
SW
220°
SW
250°
W
250°
W
250°
W
250°
W
250°
W
250°
W
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
Wind Speed
5kt
5kt
5kt
5kt
5kt
5kt
5kt
5kt
5kt
5kt
5kt
5kt
5kt
5kt
5kt
5kt
5kt
5kt
Visibility
1/2SM
1/2SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
Weather
Snow
SN
Snow
SN
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Snow
SN
Snow
SN
Snow
SN
Snow
SN
Snow
SN
Snow
SN
Snow
SN
Snow
SN
Snow
SN
Snow
SN
Clouds
OVC007
OVC007
BKN080
BKN080
BKN080
BKN080
BKN080
BKN080
OVC007
OVC007
OVC007
OVC007
OVC007
OVC007
OVC007
OVC007
OVC007
OVC007
Ceiling
700ft
AGL
700ft
AGL
8000ft
AGL
8000ft
AGL
8000ft
AGL
8000ft
AGL
8000ft
AGL
8000ft
AGL
700ft
AGL
700ft
AGL
700ft
AGL
700ft
AGL
700ft
AGL
700ft
AGL
700ft
AGL
700ft
AGL
700ft
AGL
700ft
AGL
Flight Rules IFR IFR VFR VFR VFR VFR VFR VFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR
Day/Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 07:13
🌙
Night
🌅 07:13
🌅
Dawn
🌅 07:13
☀️
Day
🌅 07:13
☀️
Day
🌅 07:13
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 16:46
☀️
Day
🌇 16:46
☀️
Day
🌇 16:46
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
IFR
Wind
220° at 5 kt
Visibility
1/2SM
Weather
Snow
Clouds
OVC007
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southwest (220°) at 5kt. Visibility will be moderate at 1/2SM. Weather conditions: Snow. Overcast skies at 700 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM172130 2026-02-17 21:00:00 - 2026-02-18 03:00:00
IFR
Wind
VRB° at 4 kt
Visibility
1/2SM
Weather
Light Snow
Clouds
OVC007
📖 Plain English Explanation:

Winds will be variable in direction at 4kt. Visibility will be moderate at 1/2SM. Weather conditions: Light Snow. Overcast skies at 700 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM172300 2026-02-17 23:00:00 - 2026-02-18 05:00:00
IFR
Wind
250° at 5 kt
Visibility
4SM
Weather
Light Snow
Clouds
OVC007
📖 Plain English Explanation:

Winds from the West-Southwest (250°) at 5kt. Visibility will be good at 4SM. Weather conditions: Light Snow. Overcast skies at 700 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM180100 2026-01-18 01:00:00 - 2026-01-18 07:00:00
VFR
Wind
250° at 5 kt
Visibility
>6SM
Clouds
BKN080
📖 Plain English Explanation:

Winds from the West-Southwest (250°) at 5kt. Visibility will be excellent at more than 6SM. Broken clouds at 8000 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.