// Station · 1h 3m ago · STALE

WSSL

Seletar Airport

CAT IFR

WIND VRB / 1 kt

VIS 1.6 SM

CEILING BKN at 16,000 ft

T/Td 28°C / 26°C

ALTIM 29.88 inHg

WX HZ

ELEV 36 FT

1.4156°N / 103.8667°E

LOCATION · Seletar, SG

WIND

VRB1 kt

WSSL · 36 FT

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

METRIC

NOW · 00Z

+6H

+12H

+18H

WIND

VRB/1

VIS

1.6 SM

CEILING

BKN160

LAYERS

FEW018 BKN160

T / Td

28 / 26

ALTIM

29.88"

// Interpretation

IFR conditions — visibility 1.6 SM. Light winds at variable/1 kt, visibility 1.6 SM, a few at 1,800 ft, and broken at 16,000 ft. Reported weather: haze (HZ). Haze is fine dust, salt, or pollution particles suspended in dry air — it reduces visibility and washes out contrast, a dry particulate obscuration rather than a moisture one. Would deteriorate to LIFR below 500 ft ceiling or 1 SM, or improve to MVFR above 1,000 ft and 3 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR WSSL 130000Z VRB01KT 2500 HZ FEW018 BKN160 28/26 Q1012

WSSL · day 13 at 00:00 UTC · wind variable at 1 kt · visibility 1.6 SM · a few clouds at 1,800 ft · broken layer at 16,000 ft · temp 28°C / dewpoint 26°C · altimeter 29.88" Hg · weather: haze (HZ)

// 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

03 HDG 030° —CALM —— 6,023'

21 HDG 210° —CALM —— 6,023'

Pattern altitude: 1,036 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 +13°C

1,600FT

+1,564 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV36 FT OAT+28°C ISA DELTA+13°C PRESSURE ALT72 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 +1,564 ft above WSSL'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)

BKN160

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

FEW018

Few · base 1,800 ft AGL · ~1–2 oktas

// Computed

CEILING16,000 ft AGL HIGHEST LAYER16,000 ft TOTAL COVERAGE~83% (mostly covered) FREEZING LEVEL14,177 ft VFR MARGIN+13,000 ft

// Sun & Moon · times in Z · bar = local day (UTC+7)

22:49ZSUNRISE

04:52ZSOLAR NOON

10:54ZSUNSET

11:15ZCIVIL END

CURRENT01:03Z DAYLIGHT REMAINING9h 51m VFR NIGHT BEGINS11:15Z (10h 12m) DAY LENGTH12h 05m

Waxing Crescent

ILLUMINATION3% MOONRISE00:10Z MOONSET12:15Z 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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