// Station · 3h 12m ago · STALE

VTSF

Nakhon Si Thammarat Airport

CAT VFR

WIND VRB / 1 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 24°C / 24°C

ALTIM 29.85 inHg

ELEV 13 FT

8.5396°N / 99.9447°E

LOCATION · Nakhon Si Thammarat, TH

WIND

VRB1 kt

VTSF · 13 FT

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

METRIC

NOW · 15Z

+6H

+12H

+18H

WIND

VRB/1

VIS

6+ SM

CEILING

—

LAYERS

FEW018

T / Td

24 / 24

ALTIM

29.85"

// Interpretation

VFR with light winds at variable/1 kt. Visibility 6+ SM and a few at 1,800 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 VTSF 251500Z VRB01KT 9999 FEW018 24/24 Q1011 NOSIG

VTSF · day 25 at 15:00 UTC · wind variable at 1 kt · visibility 6+ SM · a few clouds at 1,800 ft · temp 24°C / dewpoint 24°C · altimeter 29.85" Hg

// 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

01 HDG 010° —CALM —— 6,890'

19 HDG 190° —CALM —— 6,890'

Pattern altitude: 1,013 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 +9°C

1,200FT

+1,187 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV13 FT OAT+24°C ISA DELTA+9°C PRESSURE ALT78 FT

// Performance equivalent Operating here right now feels like operating at VTCT (Mae Fah Luang - Chiang Rai International Airport, Chiang Rai, elev 1,280 ft) on a standard ISA day.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+12%

-8%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+8%

-5%

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)

FEW018

Few · base 1,800 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER1,800 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL12,134 ft VFR MARGINunlimited

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

23:13ZSUNRISE

05:23ZSOLAR NOON

11:33ZSUNSET

11:54ZCIVIL END

CURRENT18:12Z DAYLIGHT REMAINING17h 21m VFR NIGHT BEGINS11:54Z (17h 42m) DAY LENGTH12h 19m

Waxing Gibbous

ILLUMINATION94% MOONRISE09:20Z MOONSET21:39Z FULL MOON IN2 days

// Nearest reporting stations

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

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