// Station · 29m ago

RCNN

Tainan International Airport / Tainan Air Base

CAT MVFR

WIND 100° / 6 kt

VIS 4.3 SM

CEILING BKN at 1,600 ft

T/Td 26°C / 23°C

ALTIM 29.44 inHg

WX -RA

ELEV 63 FT

22.9504°N / 120.2060°E

LOCATION · Tainan (Rende), TW

WIND

100°6 kt

RCNN · 63 FT

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

METRIC

NOW · 13Z

+6H

+12H

+18H

WIND

100°/6

VIS

4.3 SM

CEILING

BKN016

LAYERS

SCT008 BKN016 BKN040

T / Td

26 / 23

ALTIM

29.44"

// Interpretation

MVFR — ceiling 1,600 ft. Light winds at 100°/6 kt, visibility 4.3 SM, scattered at 800 ft, broken at 1,600 ft, and broken at 4,000 ft. Reported weather: -RA. 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 RCNN 111330Z 10006KT 7000 -RA SCT008 BKN016 BKN040 26/23 Q0997 RMK A2945

RCNN · day 11 at 13:30 UTC · wind from 100° at 6 kt · visibility 4.3 SM · scattered layer at 800 ft · broken layer at 1,600 ft · broken layer at 4,000 ft · temp 26°C / dewpoint 23°C · altimeter 29.44" Hg · weather: -RA

// Runway analysis · computed from current METAR wind

Wind 100° @ 6 kt

2 USABLE · 2 AVOID · 2 CAUTION

WIND

100°6 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 2 usable

18L★ HDG 180° H1 kt X6 kt LEFT PRIMARY · 10,007'

18R HDG 180° H1 kt X6 kt LEFT ⚠ HIGH XW · 100%

TAILWIND ENDS · AVOID 2 ends

36R HDG 360° T1 kt X6 kt RIGHT —

36L HDG 360° T1 kt X6 kt RIGHT —

Pattern altitude: 1,063 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

2,000FT

+1,937 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -300 FT

24h AGO18h12h6hNOW

FIELD ELEV63 FT OAT+26°C ISA DELTA+12°C PRESSURE ALT542 FT

// Performance equivalent Your aircraft will perform as if it's at a field 2,000 ft high on a standard ISA day — that's +1,937 ft above RCNN's actual elevation.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+20%

-14%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+14%

-9%

Light jetCJ4, Phenom 300, M2

+8%

-6%

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 · 3 reported · highest to lowest

// Reported layers (highest → lowest)

BKN040

Broken · base 4,000 ft AGL · ~5–7 oktas

BKN016

Broken · base 1,600 ft AGL · ~5–7 oktas

SCT008

Scattered · base 800 ft AGL · ~3–4 oktas

// Computed

CEILING1,600 ft AGL HIGHEST LAYER4,000 ft TOTAL COVERAGE~91% (overcast) FREEZING LEVEL13,194 ft VFR MARGIN-1,400 ft

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

21:21ZSUNRISE

04:05ZSOLAR NOON

10:49ZSUNSET

11:14ZCIVIL END

CURRENT13:59Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS11:14Z (past) DAY LENGTH13h 27m

Waning Crescent

ILLUMINATION11% MOONRISE18:45Z MOONSET08:12Z FULL MOON IN18 days

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

RCKH

VFR

Kaohsiung International Airport · Kaohsiung (Xiaogang)

WIND: 060° / 4 kt
VIS: 6+ SM
CEILING: BKN032
DIST: 24 NM S
AGE: 29m ago

RCQC

VFR

Penghu Magong Airport · Huxi

WIND: 220° / 8 kt
VIS: 6+ SM
CEILING: BKN060
DIST: 49 NM NW
AGE: 29m ago

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

AIRSPACE

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