// Station · 11m ago

CYYC

Calgary International Airport

CAT VFR

WIND 160° / 10 kt G16

VIS 10+ SM

CEILING BKN at 25,000 ft

T/Td 21°C / 11°C

ALTIM 30.23 inHg

ELEV 3,557 FT

51.1188°N / 114.0099°W

LOCATION · Calgary, CA

WIND

160°10 kt

CYYC · 3,557 FT

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

METRIC

NOW · 18Z

+6H

+12H

+18H

WIND

160°/10G16

VIS

10+ SM

CEILING

BKN250

LAYERS

FEW044 BKN250

T / Td

21 / 11

ALTIM

30.23"

// Interpretation

VFR — ceiling 25,000 ft. Moderate winds at 160°/10 kt, gusting 16, visibility better than 10 statute miles, a few at 4,400 ft, and broken at 25,000 ft. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

Loading TAF forecast narrative…

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

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// Raw observation METAR string + decoded

METAR CYYC 251800Z 16010G16KT 30SM FEW044 BKN250 21/11 A3023 RMK CF1CI7 CF TR CONTRAILS SLP237 DENSITY ALT 4900FT

CYYC · day 25 at 18:00 UTC · wind from 160° at 10 kt, gusts to 16 kt · visibility 10+ SM · a few clouds at 4,400 ft · broken layer at 25,000 ft · temp 21°C / dewpoint 11°C · altimeter 30.23" Hg · sea-level pressure 1023.7 mb

// Runway analysis · computed from current METAR wind

Wind 160° @ 10 ktG16

3 USABLE · 3 AVOID

WIND

160°10G16 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 3 usable

17L★ HDG 170° H10 kt X2 kt LEFT PRIMARY · 14,000'

17R HDG 170° H10 kt X2 kt LEFT 12,675'

11 HDG 110° H6 kt X8 kt RIGHT 8,000'

TAILWIND ENDS · AVOID 3 ends

29 HDG 290° T6 kt X8 kt LEFT —

35R HDG 350° T10 kt X2 kt RIGHT —

35L HDG 350° T10 kt X2 kt RIGHT —

Pattern altitude: 4,557 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 +12°C

4,700FT

+1,143 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV3,557 FT OAT+21°C ISA DELTA+12°C PRESSURE ALT3,244 FT

// Performance equivalent Your aircraft will perform as if it's at a field 4,700 ft high on a standard ISA day — that's +1,143 ft above CYYC's actual elevation.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+47%

-33%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+33%

-21%

Light jetCJ4, Phenom 300, M2

+19%

-14%

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)

BKN250

Broken · base 25,000 ft AGL · ~5–7 oktas

FEW044

Few · base 4,400 ft AGL · ~1–2 oktas

// Computed

CEILING25,000 ft AGL HIGHEST LAYER25,000 ft TOTAL COVERAGE~83% (mostly covered) FREEZING LEVEL14,163 ft VFR MARGIN+22,000 ft

// Sun & Moon · times in Z · bar = local day (UTC-8)

12:39ZSUNRISE

19:39ZSOLAR NOON

02:39ZSUNSET

03:14ZCIVIL END

CURRENT18:11Z DAYLIGHT REMAINING8h 27m VFR NIGHT BEGINS03:14Z (9h 03m) DAY LENGTH13h 59m

Waxing Gibbous

ILLUMINATION94% MOONRISE22:46Z MOONSET12:45Z FULL MOON IN2 days

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