// Station · 15m ago

CYYB

North Bay Jack Garland Airport

CAT MVFR

WIND 300° / 7 kt

VIS 10+ SM

CEILING OVC at 1,600 ft

T/Td 17°C / 14°C

ALTIM 30.07 inHg

ELEV 1,215 FT

46.3636°N / 79.4228°W

LOCATION · North Bay, CA

WIND

300°7 kt

CYYB · 1,215 FT

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

METRIC

NOW · 16Z

+6H

+12H

+18H

WIND

300°/7

VIS

10+ SM

CEILING

OVC016

LAYERS

OVC016

T / Td

17 / 14

ALTIM

30.07"

// Interpretation

MVFR — ceiling 1,600 ft. Light winds at 300°/7 kt, visibility better than 10 statute miles, overcast at 1,600 ft. Would drop to IFR below 1,000 ft ceiling or 3 SM visibility, or rise back to VFR above 3,000 ft and 5 SM.

Loading TAF forecast narrative…

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

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// Raw observation METAR string + decoded

METAR CYYB 251600Z 30007KT 280V340 30SM OVC016 17/14 A3007 RMK SC8 SLP189 DENSITY ALT 1600FT

CYYB · day 25 at 16:00 UTC · wind from 300° at 7 kt · visibility 10+ SM · overcast at 1,600 ft · temp 17°C / dewpoint 14°C · altimeter 30.07" Hg · sea-level pressure 1018.9 mb

// Runway analysis · computed from current METAR wind

Wind 300° @ 7 kt

3 USABLE · 3 AVOID · 1 CAUTION

WIND

300°7 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 3 usable

31★ HDG 310° H7 kt X1 kt LEFT PRIMARY · 2,500'

26 HDG 260° H5 kt X4 kt RIGHT 10,000'

36 HDG 360° H4 kt X6 kt LEFT ⚠ HIGH XW · 86%

TAILWIND ENDS · AVOID 3 ends

18 HDG 180° T3 kt X6 kt RIGHT —

08 HDG 080° T5 kt X4 kt LEFT —

13 HDG 130° T7 kt X1 kt RIGHT —

Pattern altitude: 2,215 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 +4°C

1,600FT

+385 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV1,215 FT OAT+17°C ISA DELTA+4°C PRESSURE ALT1,062 FT

// Performance equivalent Operating here right now feels like operating at CYLD (Chapleau Airport, Chapleau, elev 1,470 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+16%

-11%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+11%

-7%

Light jetCJ4, Phenom 300, M2

+6%

-5%

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 · 1 reported · highest to lowest

// Reported layers (highest → lowest)

OVC016

Overcast · base 1,600 ft AGL · 8 oktas

// Computed

CEILING1,600 ft AGL HIGHEST LAYER1,600 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL9,801 ft VFR MARGIN-1,400 ft

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

10:30ZSUNRISE

17:21ZSOLAR NOON

00:12ZSUNSET

00:44ZCIVIL END

CURRENT16:15Z DAYLIGHT REMAINING7h 56m VFR NIGHT BEGINS00:44Z (8h 28m) DAY LENGTH13h 41m

Waxing Gibbous

ILLUMINATION94% MOONRISE20:32Z MOONSET10:14Z FULL MOON IN2 days

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

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