// Station · 1h 16m ago · STALE

NSTU

Pago Pago International Airport

CAT VFR

WIND 110° / 14 kt G19

VIS 10+ SM

CEILING BKN at 4,000 ft

T/Td 24.8°C / 20.9°C

ALTIM 29.97 inHg

ELEV 32 FT

14.3310°S / 170.7100°W

LOCATION · Pago Pago, AS

WIND

110°14 kt

NSTU · 32 FT

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

METRIC

NOW · 12Z

+6H

+12H

+18H

WIND

110°/14G19

VIS

10+ SM

CEILING

BKN040

LAYERS

SCT018 BKN040 OVC100

T / Td

25 / 21

ALTIM

29.97"

// Interpretation

VFR — ceiling 4,000 ft. Brisk winds at 110°/14 kt, gusting 19, visibility better than 10 statute miles, scattered at 1,800 ft, broken at 4,000 ft, and overcast at 10,000 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 NSTU 251250Z 11014G19KT 10SM SCT018TCU BKN040 OVC100 25/21 A2997 RMK SHRAE01 TCU ALQDS SLP149 T02480209

NSTU · day 25 at 12:50 UTC · wind from 110° at 14 kt, gusts to 19 kt · visibility 10+ SM · scattered layer at 1,800 ft · broken layer at 4,000 ft · overcast at 10,000 ft · temp 25°C / dewpoint 21°C · altimeter 29.97" Hg · sea-level pressure 1014.9 mb

// Runway analysis · computed from current METAR wind

Wind 110° @ 14 ktG19

2 USABLE · 2 AVOID · 1 CAUTION

WIND

110°14G19 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 2 usable

08★ HDG 080° H12 kt X7 kt RIGHT PRIMARY · 3,800'

05 HDG 050° H7 kt X12 kt RIGHT ⚠ HIGH XW · 63%

TAILWIND ENDS · AVOID 2 ends

23 HDG 230° T7 kt X12 kt LEFT —

26 HDG 260° T12 kt X7 kt LEFT —

Pattern altitude: 1,032 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 +10°C

1,200FT

+1,168 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV32 FT OAT+25°C ISA DELTA+10°C PRESSURE ALT-21 FT

// Performance equivalent Your aircraft will perform as if it's at a field 1,200 ft high on a standard ISA day — that's +1,168 ft above NSTU's actual elevation.

// 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 · 3 reported · highest to lowest

// Reported layers (highest → lowest)

OVC100

Overcast · base 10,000 ft AGL · 8 oktas

BKN040

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

SCT018

Scattered · base 1,800 ft AGL · ~3–4 oktas

// Computed

CEILING4,000 ft AGL HIGHEST LAYER10,000 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL12,557 ft VFR MARGIN+1,000 ft

// Sun & Moon · times in Z · bar = local day (UTC-11)

17:33ZSUNRISE

23:26ZSOLAR NOON

05:18ZSUNSET

05:40ZCIVIL END

CURRENT14:06Z DAYLIGHT REMAINING15h 12m VFR NIGHT BEGINS05:40Z (15h 33m) DAY LENGTH11h 44m

Waxing Gibbous

ILLUMINATION93% MOONRISE03:31Z MOONSET15:16Z FULL MOON IN3 days

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