// Station · 5h 3m ago · STALE

RCFN

Taitung Airport

CAT VFR

WIND 230° / 10 kt

VIS 6+ SM

CEILING BKN at 16,000 ft

T/Td 34°C / 19°C

ALTIM 29.21 inHg

WX VCBLSA

ELEV 143 FT

22.7549°N / 121.1018°E

LOCATION · Taitung City, TW

WIND

230°10 kt

RCFN · 143 FT

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

METRIC

NOW · 12Z

+6H

+12H

+18H

WIND

230°/10

VIS

6+ SM

CEILING

BKN160

LAYERS

FEW025 BKN160

T / Td

34 / 19

ALTIM

29.21"

// Interpretation

VFR — ceiling 16,000 ft. Moderate winds at 230°/10 kt, visibility 6+ SM, a few at 2,500 ft, and broken at 16,000 ft. Reported weather: VCBLSA. 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 RCFN 111200Z 23010KT 210V270 9999 VCBLSA FEW025 BKN160 34/19 Q0989 NOSIG RMK QFF 989.5HPA A2923

RCFN · day 11 at 12:00 UTC · wind from 230° at 10 kt · visibility 6+ SM · a few clouds at 2,500 ft · broken layer at 16,000 ft · temp 34°C / dewpoint 19°C · altimeter 29.21" Hg · weather: VCBLSA

// Runway analysis · computed from current METAR wind

Wind 230° @ 10 kt

1 USABLE · 1 AVOID

WIND

230°10 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

22★ HDG 220° H10 kt X2 kt RIGHT PRIMARY · 7,999'

TAILWIND ENDS · AVOID 1 ends

04 HDG 040° T10 kt X2 kt LEFT —

Pattern altitude: 1,143 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 +21°C

3,300FT

+3,157 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↗ +700 FT

24h AGO18h12h6hNOW

FIELD ELEV143 FT OAT+34°C ISA DELTA+21°C PRESSURE ALT858 FT

// Performance equivalent Your aircraft will perform as if it's at a field 3,300 ft high on a standard ISA day — that's +3,157 ft above RCFN's actual elevation.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+33%

-23%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+23%

-15%

Light jetCJ4, Phenom 300, M2

+13%

-10%

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.

// Cloud layers · 2 reported · highest to lowest

// Reported layers (highest → lowest)

BKN160

Broken · base 16,000 ft AGL · ~5–7 oktas

FEW025

Few · base 2,500 ft AGL · ~1–2 oktas

// Computed

CEILING16,000 ft AGL HIGHEST LAYER16,000 ft TOTAL COVERAGE~83% (mostly covered) FREEZING LEVEL17,315 ft VFR MARGIN+13,000 ft

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

21:19ZSUNRISE

04:02ZSOLAR NOON

10:45ZSUNSET

11:10ZCIVIL END

CURRENT17:03Z DAYLIGHT REMAINING17h 41m VFR NIGHT BEGINS11:10Z (18h 06m) DAY LENGTH13h 26m

Waning Crescent

ILLUMINATION10% MOONRISE18:48Z MOONSET08:14Z FULL MOON IN18 days

// Nearest reporting stations · 2 shown · 60 NM radius

RCKH

MVFR

Kaohsiung International Airport · Kaohsiung (Xiaogang)

WIND: 210° / 9 kt
VIS: 6+ SM
CEILING: BKN016
DIST: 43 NM W
AGE: 1h 3m ago

RCNN

MVFR

Tainan International Airport / Tainan Air Base · Tainan (Rende)

WIND: 150° / 6 kt
VIS: 5.6 SM
CEILING: BKN020
DIST: 51 NM W
AGE: 1h 3m ago

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

AIRSPACE

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