// Station · 14h 21m ago · STALE · HARD STALE

FACV

Calvinia Airport

CAT VFR

WIND 340° / 15 kt G25

VIS 6+ SM

CEILING CLR

T/Td 31°C / 0°C

ALTIM 30.15 inHg

ELEV 3,250 FT

31.5003°S / 19.7259°E

LOCATION · Calvinia, ZA

WIND

340°15 kt

FACV · 3,250 FT

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

METRIC

NOW · 10Z

+6H

+12H

+18H

WIND

340°/15G25

VIS

6+ SM

CEILING

CLR

LAYERS

—

T / Td

31 / 0

ALTIM

30.15"

// Interpretation

VFR with brisk winds at 340°/15 kt, gusting 25. 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

SPECI FACV 281055Z 34015G25KT CAVOK 31/00 Q1021

FACV · day 28 at 10:55 UTC · wind from 340° at 15 kt, gusts to 25 kt · visibility 6+ SM · temp 31°C / dewpoint 0°C · altimeter 30.15" Hg

// Runway analysis · computed from current METAR wind

Wind 340° @ 15 ktG25

1 USABLE · 1 AVOID · 1 CAUTION

WIND

340°15G25 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 1 usable

27★ HDG 270° H5 kt X14 kt RIGHT PRIMARY · 4,101'

TAILWIND ENDS · AVOID 1 ends

09 HDG 090° T5 kt X14 kt LEFT —

Pattern altitude: 4,250 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 +22°C

5,700FT

+2,450 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV3,250 FT OAT+31°C ISA DELTA+22°C PRESSURE ALT3,020 FT

// Performance equivalent Operating here right now feels like operating at FAEO (Ermelo Airport, Ermelo, elev 5,700 ft) on a standard ISA day.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+57%

-40%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+40%

-26%

Light jetCJ4, Phenom 300, M2

+23%

-17%

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 LEVEL18,907 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+1)

05:03ZSUNRISE

10:43ZSOLAR NOON

16:24ZSUNSET

16:48ZCIVIL END

CURRENT01:16Z DAYLIGHT REMAINING15h 08m VFR NIGHT BEGINS16:48Z (15h 32m) DAY LENGTH11h 21m

Waning Gibbous

ILLUMINATION99% MOONRISE17:50Z MOONSET05:11Z FULL MOON IN29 days

// Nearest reporting stations

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

AIRSPACE

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