// Station · 15m ago

YBAS

Alice Springs Airport

CAT VFR

WIND CALM

VIS 6+ SM

CEILING CLR

T/Td 8°C / 7°C

ALTIM 30.30 inHg

ELEV 1,789 FT

23.8066°S / 133.9034°E

LOCATION · Alice Springs, AU

WIND

000°0 kt

YBAS · 1,789 FT

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

METRIC

NOW · 16Z

+6H

+12H

+18H

WIND

CALM

VIS

6+ SM

CEILING

CLR

LAYERS

—

T / Td

8 / 7

ALTIM

30.30"

// Interpretation

VFR with winds calm. Visibility 6+ SM and no reported cloud layers. 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 YBAS 251600Z AUTO 00000KT 9999 // NCD 08/07 Q1026

YBAS · day 25 at 16:00 UTC · winds calm · visibility 6+ SM · temp 8°C / dewpoint 7°C · altimeter 30.30" Hg

// Runway analysis · computed from current METAR wind

Wind CALM

ALL USABLE · WINDS CALM

WIND

000°calm

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 4 ends

12 HDG 120° —CALM —— 7,999'

30 HDG 300° —CALM —— 7,999'

17 HDG 170° —CALM —— 3,717'

35 HDG 350° —CALM —— 3,717'

Pattern altitude: 2,789 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 -4°C

900FT

-889 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV1,789 FT OAT+8°C ISA DELTA-4°C PRESSURE ALT1,411 FT

// Performance equivalent Operating here right now feels like operating at YKKG (Kalkgurung Airport, elev 646 ft) on a standard ISA day.

// Aircraft performance impact ENHANCED

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+9%

-6%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+6%

-4%

Light jetCJ4, Phenom 300, M2

+4%

-3%

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 · clear · no layers reported

// Reported layers (highest → lowest)

CLR

No reported cloud layers — clear sky from surface to reporting ceiling.

// Computed

CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL5,829 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+9)

21:23ZSUNRISE

03:07ZSOLAR NOON

08:52ZSUNSET

09:15ZCIVIL END

CURRENT16:15Z DAYLIGHT REMAINING16h 36m VFR NIGHT BEGINS09:15Z (16h 59m) DAY LENGTH11h 29m

Waxing Gibbous

ILLUMINATION94% MOONRISE07:25Z MOONSET18:55Z FULL MOON IN2 days

// Nearest reporting stations

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

AIRSPACE

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