// Station · 53m ago
RJSN
Niigata Airport
CAT VFR
WIND 020° / 6 kt
VIS 6+ SM
CEILING Few/scattered only
T/Td 21°C / 17°C
ALTIM 29.71 inHg
ELEV 29 FT
37.9542°N / 139.1122°E
LOCATION · Niigata, JP
WIND
020°6 kt
RJSN · 29 FT
© OSM · CartoDB
// Current + 24h forecast · METAR loaded · TAF loading…
METRIC
NOW · 10Z
+6H
+12H
+18H
WIND
020°/6
VIS
6+ SM
CEILING
—
LAYERS
FEW030 SCT150
T / Td
21 / 17
ALTIM
29.71"
// Interpretation
VFR with light winds at 020°/6 kt. Visibility 6+ SM and a few at 3,000 ft, and scattered at 15,000 ft. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.
Loading TAF forecast narrative…
// Want this glance-able on 10 airports? METAR Deck →// Raw observation METAR string + decoded
METAR RJSN 271000Z 02006KT 360V080 9999 FEW030 SCT150 BKN/// 21/17 Q1006
RJSN · day 27 at 10:00 UTC · wind from 020° at 6 kt · visibility 6+ SM · a few clouds at 3,000 ft · scattered layer at 15,000 ft · temp 21°C / dewpoint 17°C · altimeter 29.71" Hg
// Runway analysis · computed from current METAR wind
Wind 020° @ 6 kt
2 USABLE · 2 AVOID · 1 CAUTION
WIND
020°6 kt
HEADWIND
CAUTION · HIGH XW
AVOID · TAILWIND
HEADWIND ENDS
2 usable
04★
HDG 040°
H6 kt
X2 kt LEFT
PRIMARY · 4,300'
10
HDG 100°
H1 kt
X6 kt LEFT
⚠ HIGH XW · 100%
TAILWIND ENDS · AVOID
2 ends
28
HDG 280°
T1 kt
X6 kt RIGHT
—
22
HDG 220°
T6 kt
X2 kt RIGHT
—
Pattern altitude: 1,029 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 +6°C
1,000FT
+971 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS
↗ +200 FT
24h AGO18h12h6hNOW
FIELD ELEV29 FT
OAT+21°C
ISA DELTA+6°C
PRESSURE ALT242 FT
// Performance equivalent
Operating here right now feels like operating at RJSF
(Fukushima Airport, Sukagawa, elev 1,221 ft)
on a standard ISA day.
// Aircraft performance impact
MINOR
TAKEOFF ROLL
CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+10%
-7%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+7%
-5%
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.
// Cloud layers · 2 reported · highest to lowest
// Sun & Moon · times in Z · bar = local day (UTC+9)
19:26ZSUNRISE
02:42ZSOLAR NOON
09:57ZSUNSET
10:27ZCIVIL END
CURRENT10:53Z
DAYLIGHT REMAINING0m
VFR NIGHT BEGINS10:27Z (past)
DAY LENGTH14h 30m
Waxing Gibbous
ILLUMINATION83%
MOONRISE04:09Z
MOONSET18:40Z
FULL MOON IN4 days
// Nearest reporting stations · 4 shown · 100 NM (sparse area)
RJSY
VFR
Shonai Airport · Shonai
- WIND
- 090° / 11 kt
- VIS
- 6+ SM
- CEILING
- FEW040
- DIST
- 61 NM NE
- AGE
- 53m ago
RJSC
VFR
Yamagata Airport · Higashine
- WIND
- 100° / 12 kt
- VIS
- 6+ SM
- CEILING
- FEW025
- DIST
- 65 NM NE
- AGE
- 53m ago
RJSF
VFR
Fukushima Airport · Sukagawa
- WIND
- 140° / 6 kt
- VIS
- 6+ SM
- CEILING
- FEW020
- DIST
- 76 NM SE
- AGE
- 53m ago
RJSS
LIFR
Sendai Airport · Natori
- WIND
- 120° / 4 kt
- VIS
- 0.68 SM
- CEILING
- BKN003
- DIST
- 86 NM E
- AGE
- 53m ago
// Area map · 100 NM radius · CartoDB Dark Matter + aeronautical overlay
© OpenStreetMap · CartoDB · OpenAIP
//
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