Ottawa Macdonald-Cartier International Airport

CYOW / YOW

Ottawa, CA

Current TAF Forecast

Raw TAF:
TAF CYOW 150840Z 1509/1612 32008KT P6SM FEW020 SCT060 BKN200 TEMPO 1509/1512 5SM BR BKN020 OVC060 FM151200 31005KT P6SM OVC020 TEMPO 1512/1516 BKN025 FM151600 23005KT P6SM FEW020 BKN040 FM152300 20008KT P6SM FEW040 FM160600 20008KT P6SM SCT110 TEMPO 1606/1609 BKN110 RMK NXT FCST BY 151200Z

Detailed TAF Table

Parameter
Fri
10:00Z
+-1h
Fri
11:00Z
+0h
Fri
12:00Z
+1h
Fri
13:00Z
+2h
Fri
14:00Z
+3h
Fri
15:00Z
+4h
Fri
16:00Z
+5h
Fri
17:00Z
+6h
Fri
18:00Z
+7h
Fri
19:00Z
+8h
Fri
20:00Z
+9h
Fri
21:00Z
+10h
Fri
22:00Z
+11h
Fri
23:00Z
+12h
Sat
00:00Z
+13h
Sat
01:00Z
+14h
Sat
02:00Z
+15h
Sat
03:00Z
+16h
Sat
04:00Z
+17h
Sat
05:00Z
+18h
Sat
06:00Z
+19h
Sat
07:00Z
+20h
Sat
08:00Z
+21h
Sat
09:00Z
+22h
Sat
10:00Z
+23h
Wind Dir
320°
NW
320°
NW
320°
NW
320°
NW
320°
NW
320°
NW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
230°
SW
320°
NW
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
320°
NW
320°
NW
320°
NW
320°
NW
200°
S
200°
S
Wind Speed
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
FCST
FCST
FCST
FCST
FCST
FCST
☀️ Clear
☀️ Clear
Clouds
FEW020
SCT060
FEW020
SCT060
BKN025
BKN025
BKN025
BKN025
FEW020
BKN040
FEW020
BKN040
FEW020
BKN040
FEW020
BKN040
FEW020
BKN040
FEW020
BKN040
FEW020
SCT060
FEW040
FEW040
FEW040
FEW040
FEW040
FEW040
FEW020
SCT060
BKN110
BKN110
BKN110
SCT110
SCT110
Ceiling
20,000 ft
AGL
20,000 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
2,500 ft
AGL
2,500 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
20,000 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
20,000 ft
AGL
11,000 ft
AGL
11,000 ft
AGL
11,000 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
Flight Rules VFR VFR MVFR MVFR MVFR MVFR VFR 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
☀️
Day
☀️
Day
☀️
Day
🌇 19:07Z
☀️
Day
🌇 19:07Z
☀️
Day
🌇 19:07Z
🌙
Night
🌇 19:07Z
🌙
Night
🌇 19:07Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:51Z
🌙
Night
🌅 04:51Z
🌙
Night
🌅 04:51Z
☀️
Day
🌅 04:51Z
☀️
Day
🌅 04:51Z
☀️
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 occurrence • AGL: Above Ground Level

Forecast Periods

BASE
VFR
Wind
320° at 8 kt
Visibility
>6SM
Clouds
FEW020 SCT060 BKN200
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Northwest (320°) at 8 kt. Visibility will be excellent at more than 6SM. Few clouds at 2000 feet, Scattered clouds at 6000 feet, Broken clouds at 20000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 09:00Z - 12:00Z
MVFR
Visibility
5SM
Weather
Mist
Clouds
BKN020 OVC060
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be good at 5SM. Weather conditions: Mist. Broken clouds at 2000 feet, Overcast skies at 6000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM151200 12:00Z - 18:00Z
MVFR
Wind
310° at 5 kt
Visibility
>6SM
Clouds
OVC020
📖 Plain English Explanation:

Winds from the Northwest (310°) at 5 kt. Visibility will be excellent at more than 6SM. Overcast skies at 2000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 12:00Z - 16:00Z
MVFR
Clouds
BKN025
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Broken clouds at 2500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM151600 16:00Z - 22:00Z
VFR
Wind
230° at 5 kt
Visibility
>6SM
Clouds
FEW020 BKN040
📖 Plain English Explanation:

Winds from the Southwest (230°) at 5 kt. Visibility will be excellent at more than 6SM. Few clouds at 2000 feet, Broken clouds at 4000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM152300 23:00Z - 05:00Z
VFR
Wind
200° at 8 kt
Visibility
>6SM
Clouds
FEW040
📖 Plain English Explanation:

Winds from the South-Southwest (200°) at 8 kt. Visibility will be excellent at more than 6SM. Few clouds at 4000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM160600 06:00Z - 12:00Z
VFR
Wind
200° at 8 kt
Visibility
>6SM
Clouds
SCT110
📖 Plain English Explanation:

Winds from the South-Southwest (200°) at 8 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 11000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 06:00Z - 09:00Z
VFR
Weather
FCST
Clouds
BKN110
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Weather conditions: FCST. Broken clouds at 11000 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.