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// Station · 19m ago

RJEC

Asahikawa Airport
CAT VFR
WIND 170° / 8 kt
VIS 6+ SM
CEILING BKN at 10,000 ft
T/Td 21°C / 20°C
ALTIM 29.80 inHg
WX -RA
ELEV 721 FT
43.6708°N / 142.4470°E
LOCATION · Higashikagura, JP
N
WIND
170°8 kt
RJEC · 721 FT
© OSM · CartoDB

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

METRIC
NOW · 14Z
+6H
+12H
+18H
WIND
170°/8
 
 
 
VIS
6+ SM
 
 
 
CEILING
BKN100
 
 
 
LAYERS
FEW070 SCT090 BKN100
 
 
 
T / Td
21 / 20
 
 
 
ALTIM
29.80"
 
 
 

// Interpretation

VFR — ceiling 10,000 ft. Moderate winds at 170°/8 kt, visibility 6+ SM, a few at 7,000 ft, scattered at 9,000 ft, and broken at 10,000 ft. Reported weather: -RA. 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 RJEC 111400Z AUTO 17008KT 9999 -RA FEW070 SCT090 BKN100 //////TCU 21/20 Q1009

RJEC · day 11 at 14:00 UTC · wind from 170° at 8 kt · visibility 6+ SM · a few clouds at 7,000 ft · scattered layer at 9,000 ft · broken layer at 10,000 ft · temp 21°C / dewpoint 20°C · altimeter 29.80" Hg · weather: -RA

// Runway analysis · computed from current METAR wind

Wind 170° @ 8 kt
1 USABLE · 1 AVOID
N
WIND
170°8 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 1 usable
16 HDG 160° H8 kt X1 kt RIGHT PRIMARY · 8,200'
TAILWIND ENDS · AVOID 1 ends
34 HDG 340° T8 kt X1 kt LEFT
Pattern altitude: 1,721 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 +8°C

1,800FT
+1,079 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +100 FT
2,400 2,000 1,600
24h AGO18h12h6hNOW
FIELD ELEV721 FT OAT+21°C ISA DELTA+8°C PRESSURE ALT845 FT
// Performance equivalent Operating here right now feels like operating at RJAF (Shinshu-Matsumoto Airport, Matsumoto, elev 2,182 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+18%
-13%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+13%
-8%
Light jetCJ4, Phenom 300, M2
+7%
-5%

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 · 3 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 11,327 FT FEW070 SCT090 BKN100 · CEILING RJEC ELEV · 721 FT
// Reported layers (highest → lowest)
BKN100
Broken · base 10,000 ft AGL · ~5–7 oktas
SCT090
Scattered · base 9,000 ft AGL · ~3–4 oktas
FEW070
Few · base 7,000 ft AGL · ~1–2 oktas
// Computed
CEILING10,000 ft AGL HIGHEST LAYER10,000 ft TOTAL COVERAGE~91% (overcast) FREEZING LEVEL11,327 ft VFR MARGIN+7,000 ft

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

18:59ZSUNRISE
02:36ZSOLAR NOON
10:13ZSUNSET
10:48ZCIVIL END
CURRENT14:19Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS10:48Z (past) DAY LENGTH15h 14m
Waning Crescent
ILLUMINATION11% MOONRISE16:23Z MOONSET07:37Z FULL MOON IN18 days

// Nearest reporting stations · 2 shown · 100 NM (sparse area)

// Area map · 100 NM radius · CartoDB Dark Matter + aeronautical overlay

© OpenStreetMap · CartoDB · OpenAIP
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