// Station · 33m ago

RCSS

Taipei Songshan International Airport

CAT VFR

WIND 100° / 3 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 27°C / 22°C

ALTIM 30.03 inHg

ELEV 18 FT

25.0672°N / 121.5528°E

LOCATION · Taipei (Songshan), TW

WIND

100°3 kt

RCSS · 18 FT

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

METRIC

NOW · 00Z

+6H

+12H

+18H

WIND

100°/3

VIS

6+ SM

CEILING

—

LAYERS

FEW020

T / Td

27 / 22

ALTIM

30.03"

// Interpretation

VFR with light winds at 100°/3 kt. Visibility 6+ SM and a few at 2,000 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 130030Z 10003KT 050V140 9999 FEW020 27/22 Q1017 NOSIG RMK A3005

RCSS · day 13 at 00:30 UTC · wind from 100° at 3 kt · visibility 6+ SM · a few clouds at 2,000 ft · temp 27°C / dewpoint 22°C · altimeter 30.03" Hg

// Runway analysis · computed from current METAR wind

Wind 100° @ 3 kt

ALL USABLE · WINDS CALM

WIND

100°3 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 +12°C

1,300FT

+1,282 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV18 FT OAT+27°C ISA DELTA+12°C PRESSURE ALT-94 FT

// Performance equivalent Your aircraft will perform as if it's at a field 1,300 ft high on a standard ISA day — that's +1,282 ft above RCSS's actual elevation.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+13%

-9%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+9%

-6%

Light jetCJ4, Phenom 300, M2

+5%

-4%

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)

FEW020

Few · base 2,000 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER2,000 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL13,654 ft VFR MARGINunlimited

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

21:51ZSUNRISE

03:41ZSOLAR NOON

09:30ZSUNSET

09:53ZCIVIL END

CURRENT01:03Z DAYLIGHT REMAINING8h 27m VFR NIGHT BEGINS09:53Z (8h 50m) DAY LENGTH11h 38m

Waxing Crescent

ILLUMINATION3% MOONRISE23:12Z MOONSET10:51Z 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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