// Station · 11m ago

RCSS

Taipei Songshan International Airport

CAT VFR

WIND VRB / 1 kt

VIS 6+ SM

CEILING BKN at 15,000 ft

T/Td 26°C / 25°C

ALTIM 29.71 inHg

ELEV 18 FT

25.0672°N / 121.5528°E

LOCATION · Taipei (Songshan), TW

WIND

VRB1 kt

RCSS · 18 FT

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

METRIC

NOW · 18Z

+6H

+12H

+18H

WIND

VRB/1

VIS

6+ SM

CEILING

BKN150

LAYERS

FEW012 BKN150

T / Td

26 / 25

ALTIM

29.71"

// Interpretation

VFR — ceiling 15,000 ft. Light winds at variable/1 kt, visibility 6+ SM, a few at 1,200 ft, and broken at 15,000 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 RCSS 251800Z VRB01KT 9999 FEW012 BKN150 26/25 Q1006 NOSIG RMK A2971

RCSS · day 25 at 18:00 UTC · wind variable at 1 kt · visibility 6+ SM · a few clouds at 1,200 ft · broken layer at 15,000 ft · temp 26°C / dewpoint 25°C · altimeter 29.71" Hg

// Runway analysis · computed from current METAR wind

Wind VRB @ 1 kt

ALL USABLE · WINDS CALM

WIND

VRB1 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

10 HDG 100° —CALM —— 8,547'

28 HDG 280° —CALM —— 8,547'

Pattern altitude: 1,018 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 +11°C

1,600FT

+1,582 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV18 FT OAT+26°C ISA DELTA+11°C PRESSURE ALT231 FT

// Performance equivalent Your aircraft will perform as if it's at a field 1,600 ft high on a standard ISA day — that's +1,582 ft above RCSS's actual elevation.

// Aircraft performance impact MODERATE

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 · 2 reported · highest to lowest

// Reported layers (highest → lowest)

BKN150

Broken · base 15,000 ft AGL · ~5–7 oktas

FEW012

Few · base 1,200 ft AGL · ~1–2 oktas

// Computed

CEILING15,000 ft AGL HIGHEST LAYER15,000 ft TOTAL COVERAGE~83% (mostly covered) FREEZING LEVEL13,149 ft VFR MARGIN+12,000 ft

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

21:33ZSUNRISE

03:57ZSOLAR NOON

10:21ZSUNSET

10:44ZCIVIL END

CURRENT18:11Z DAYLIGHT REMAINING16h 10m VFR NIGHT BEGINS10:44Z (16h 33m) DAY LENGTH12h 47m

Waxing Gibbous

ILLUMINATION94% MOONRISE07:39Z MOONSET20:27Z FULL MOON IN2 days

// Nearest reporting stations

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

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