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// Station · 29m ago

VVCI

Cat Bi International Airport
CAT VFR
WIND 110° / 4 kt
VIS 6+ SM
CEILING Few/scattered only
T/Td 30°C / 27°C
ALTIM 29.47 inHg
ELEV 6 FT
20.8174°N / 106.7243°E
LOCATION · Haiphong (Hai An), VN
N
WIND
110°4 kt
VVCI · 6 FT
© OSM · CartoDB

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

METRIC
NOW · 13Z
+6H
+12H
+18H
WIND
110°/4
 
 
 
VIS
6+ SM
 
 
 
CEILING
 
 
 
LAYERS
FEW018 FEW027
 
 
 
T / Td
30 / 27
 
 
 
ALTIM
29.47"
 
 
 

// Interpretation

VFR with light winds at 110°/4 kt. Visibility 6+ SM and a few at 1,800 ft, and a few at 2,700 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 VVCI 111330Z 11004KT 9999 FEW018 FEW027CB 30/27 Q0998 TEMPO FM1400 3500 TSRA

VVCI · day 11 at 13:30 UTC · wind from 110° at 4 kt · visibility 6+ SM · a few clouds at 1,800 ft · a few clouds at 2,700 ft · temp 30°C / dewpoint 27°C · altimeter 29.47" Hg

// Runway analysis · computed from current METAR wind

Wind 110° @ 4 kt
ALL USABLE · WINDS CALM
N
WIND
110°4 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 2 ends
07 HDG 070° CALM 10,007'
25 HDG 250° CALM 10,007'
Pattern altitude: 1,006 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 +16°C

2,400FT
+2,394 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +400 FT
2,700 2,300 1,900
24h AGO18h12h6hNOW
FIELD ELEV6 FT OAT+30°C ISA DELTA+16°C PRESSURE ALT455 FT
// Performance equivalent Operating here right now feels like operating at VVPK (Pleiku Airport, Pleiku, elev 2,434 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+24%
-17%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+17%
-11%
Light jetCJ4, Phenom 300, M2
+10%
-7%

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.

// Cloud layers · 2 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 15,158 FT FEW018 FEW027 VVCI ELEV · 6 FT
// Reported layers (highest → lowest)
FEW027
Few · base 2,700 ft AGL · ~1–2 oktas
FEW018
Few · base 1,800 ft AGL · ~1–2 oktas
// Computed
CEILING HIGHEST LAYER2,700 ft TOTAL COVERAGE~23% (sparse) FREEZING LEVEL15,158 ft VFR MARGINunlimited

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

22:20ZSUNRISE
04:59ZSOLAR NOON
11:39ZSUNSET
12:03ZCIVIL END
CURRENT13:59Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS12:03Z (past) DAY LENGTH13h 19m
Waning Crescent
ILLUMINATION11% MOONRISE19:43Z MOONSET09:02Z FULL MOON IN18 days

// Nearest reporting stations · 3 shown · 150 NM (sparse area)

// Area map · 140 NM radius · CartoDB Dark Matter + aeronautical overlay

© OpenStreetMap · CartoDB · OpenAIP
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