// Station · 14m ago

CYOW

Ottawa Macdonald-Cartier International Airport

CAT IFR

WIND 030° / 8 kt

VIS 5.0 SM

CEILING BKN at 500 ft

T/Td 12°C / 11°C

ALTIM 29.88 inHg

WX -RA BR

ELEV 374 FT

45.3225°N / 75.6692°W

LOCATION · Ottawa, CA

WIND

030°8 kt

CYOW · 374 FT

// Current + 24h forecast · METAR loaded · TAF loading…

METRIC

NOW · 01Z

+6H

+12H

+18H

WIND

030°/8

VIS

5.0 SM

CEILING

BKN005

LAYERS

BKN005 OVC017

T / Td

12 / 11

ALTIM

29.88"

// Interpretation

IFR conditions — ceiling 500 ft. Moderate winds at 030°/8 kt, visibility 5.0 SM, broken at 500 ft, and overcast at 1,700 ft. Reported weather: light rain and mist (-RA BR). Mist is water droplets thinning visibility to between 5/8 and 6 SM — the moist, lighter cousin of fog. Would deteriorate to LIFR below 500 ft ceiling or 1 SM, or improve to MVFR above 1,000 ft and 3 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

SPECI CYOW 130145Z 03008KT 5SM -RA BR BKN005 OVC017 12/11 A2988 RMK SF6SC2 SLP124

CYOW · day 13 at 01:45 UTC · wind from 030° at 8 kt · visibility 5.0 SM · broken layer at 500 ft · overcast at 1,700 ft · temp 12°C / dewpoint 11°C · altimeter 29.88" Hg · weather: light rain and mist (-RA BR) · sea-level pressure 1012.4 mb

// Runway analysis · computed from current METAR wind

Wind 030° @ 8 kt

3 USABLE · 3 AVOID · 1 CAUTION

WIND

030°8 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 3 usable

04★ HDG 040° H8 kt X1 kt LEFT PRIMARY · 3,300'

07 HDG 070° H6 kt X5 kt LEFT 8,000'

32 HDG 320° H3 kt X8 kt RIGHT ⚠ HIGH XW · 100%

TAILWIND ENDS · AVOID 3 ends

14 HDG 140° T3 kt X8 kt LEFT —

25 HDG 250° T6 kt X5 kt RIGHT —

22 HDG 220° T8 kt X1 kt RIGHT —

Pattern altitude: 1,374 ft MSL (1,000 ft AGL). Verify pattern direction and altitude with the chart supplement before flying. // On calm winds (<3 kt), all runways are usable — favor the longest or whatever the pattern calls for.

// Density altitude · ISA -2°C

200FT

-174 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV374 FT OAT+12°C ISA DELTA-2°C PRESSURE ALT413 FT

// Performance equivalent Operating here right now feels like operating at CYRO (Ottawa / Rockcliffe Airport, Ottawa, elev 188 ft) on a standard ISA day.

// Aircraft performance impact ENHANCED

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+2%

-1%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+1%

-1%

Light jetCJ4, Phenom 300, M2

+1%

-1%

Approximate using ~10% perf loss / 1,000 ft DA for normally aspirated, scaled by powerplant type. Verify with your aircraft's POH for accurate numbers — especially above 5,000 ft DA where these rules of thumb diverge. Severity rating assumes a standard altimeter setting (29.92" Hg / 1013 hPa); a non-standard setting shifts the effective altitude by roughly 1,000 ft per 1" Hg of deviation.

// Cloud layers · 2 reported · highest to lowest

// Reported layers (highest → lowest)

OVC017

Overcast · base 1,700 ft AGL · 8 oktas

BKN005

Broken · base 500 ft AGL · ~5–7 oktas

// Computed

CEILING500 ft AGL HIGHEST LAYER1,700 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL6,435 ft VFR MARGIN-2,500 ft

// Sun & Moon · times in Z · bar = local day (UTC-5)

11:15ZSUNRISE

16:50ZSOLAR NOON

22:24ZSUNSET

22:54ZCIVIL END

CURRENT01:59Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS22:54Z (past) DAY LENGTH11h 09m

Waxing Crescent

ILLUMINATION3% MOONRISE12:38Z MOONSET23:47Z FULL MOON IN13 days

// Nearest reporting stations

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// Area map · 60 NM radius · CartoDB Dark Matter + aeronautical overlay

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