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// Station · 22m ago

FHAW

RAF Ascension Island
CAT MVFR
WIND 150° / 13 kt
VIS 6+ SM
CEILING BKN at 1,800 ft
T/Td 24°C / 19°C
ALTIM 30.00 inHg
ELEV 278 FT
7.9702°S / 14.3927°W
LOCATION · Cat Hill, SH
N
WIND
150°13 kt
FHAW · 278 FT
© OSM · CartoDB

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

METRIC
NOW · 04Z
+6H
+12H
+18H
WIND
150°/13
 
 
 
VIS
6+ SM
 
 
 
CEILING
BKN018
 
 
 
LAYERS
BKN018 OVC034
 
 
 
T / Td
24 / 19
 
 
 
ALTIM
30.00"
 
 
 

// Interpretation

MVFR — ceiling 1,800 ft. Brisk winds at 150°/13 kt, visibility 6+ SM, broken at 1,800 ft, and overcast at 3,400 ft. Would drop to IFR below 1,000 ft ceiling or 3 SM visibility, or rise back to VFR above 3,000 ft and 5 SM.

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

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// Raw observation METAR string + decoded

METAR FHAW 180450Z AUTO 15013KT 9999 BKN018/// OVC034/// 24/19 Q1016

FHAW · day 18 at 04:50 UTC · wind from 150° at 13 kt · visibility 6+ SM · broken layer at 1,800 ft · overcast at 3,400 ft · temp 24°C / dewpoint 19°C · altimeter 30.00" Hg

// Runway analysis · computed from current METAR wind

Wind 150° @ 13 kt
1 USABLE · 1 AVOID
N
WIND
150°13 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 1 usable
13 HDG 130° H12 kt X4 kt RIGHT PRIMARY · 10,019'
TAILWIND ENDS · AVOID 1 ends
31 HDG 310° T12 kt X4 kt LEFT
Pattern altitude: 1,278 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

1,300FT
+1,022 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV278 FT OAT+24°C ISA DELTA+9°C PRESSURE ALT196 FT
// Performance equivalent Operating here right now feels like operating at FHSH (Saint Helena International Airport, Jamestown, elev 1,017 ft) on a standard ISA day.
// Aircraft performance impact MODERATE
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+13%
-9%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+9%
-6%
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 · 2 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 12,399 FT BKN018 · CEILING OVC034 FHAW ELEV · 278 FT
// Reported layers (highest → lowest)
OVC034
Overcast · base 3,400 ft AGL · 8 oktas
BKN018
Broken · base 1,800 ft AGL · ~5–7 oktas
// Computed
CEILING1,800 ft AGL HIGHEST LAYER3,400 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL12,399 ft VFR MARGIN-1,200 ft

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

07:06ZSUNRISE
13:02ZSOLAR NOON
18:58ZSUNSET
19:20ZCIVIL END
CURRENT05:12Z DAYLIGHT REMAINING13h 46m VFR NIGHT BEGINS19:20Z (14h 07m) DAY LENGTH11h 51m
Waxing Crescent
ILLUMINATION25% MOONRISE11:05Z MOONSET22:57Z FULL MOON IN10 days

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