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// 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
N
WIND
100°6 kt
RCNN · 63 FT
© OSM · CartoDB

// 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
N
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
2,600 2,250 1,900
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

FT 0 5k 10k 15k 20k 25k FRZ LVL · 13,194 FT SCT008 BKN016 · CEILING BKN040 RCNN ELEV · 63 FT
// 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

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

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