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// KS21 · Sunriver Airport · Sunriver

// Station · 11m ago

KS21

Sunriver Airport
CAT VFR
WIND 290° / 13 kt
VIS 9.0 SM
CEILING CLR
T/Td 25°C / 3°C
ALTIM 30.03 inHg
ELEV 4,164 FT
43.8763°N / 121.4530°W
LOCATION · Sunriver, US
N
WIND
290°13 kt
KS21 · 4,164 FT
© OSM · CartoDB

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

METRIC
NOW · 22Z
+6H
+12H
+18H
WIND
290°/13
 
 
 
VIS
9.0 SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
—
 
 
 
T / Td
25 / 3
 
 
 
ALTIM
30.03"
 
 
 

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// Interpretation

VFR with brisk winds at 290°/13 kt. Visibility 9.0 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

METAR KS21 282255Z AUTO 29013KT 9SM CLR 25/03 A3003 RMK AO2

KS21 · day 28 at 22:55 UTC · wind from 290° at 13 kt · visibility 9.0 SM · temp 25°C / dewpoint 3°C · altimeter 30.03" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 290° @ 13 kt
1 USABLE · 1 AVOID · 1 CAUTION
N
WIND
290°13 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 1 usable
36★ HDG 360° H4 kt X12 kt LEFT PRIMARY · 5,460'
TAILWIND ENDS · AVOID 1 ends
18 HDG 180° T4 kt X12 kt RIGHT —
Pattern altitude: 5,164 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 +18°C

6,200FT
+2,036 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV4,164 FT OAT+25°C ISA DELTA+18°C PRESSURE ALT4,052 FT
// Performance equivalent Operating here right now feels like operating at KTVL (Lake Tahoe Airport, South Lake Tahoe, elev 6,264 ft) on a standard ISA day.
// Aircraft performance impact SIGNIFICANT
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+62%
-43%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+43%
-28%
Light jetCJ4, Phenom 300, M2
+25%
-19%

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

FT 0 5k 10k 15k 20k 25k FRZ LVL · 16,790 FT KS21 ELEV · 4,164 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL16,790 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-8)

13:26ZSUNRISE
20:08ZSOLAR NOON
02:50ZSUNSET
03:20ZCIVIL END
CURRENT23:06Z DAYLIGHT REMAINING3h 44m VFR NIGHT BEGINS03:20Z (4h 14m) DAY LENGTH13h 24m
Full Moon
ILLUMINATION99% MOONRISE02:08Z MOONSET15:33Z FULL MOON IN29 days

// Nearest reporting stations

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

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