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// Station · 9m ago

K3W7

Grand Coulee Dam Airport
CAT VFR
WIND 170° / 4 kt
VIS 10+ SM
CEILING CLR
T/Td 10°C / -4°C
ALTIM 30.01 inHg
ELEV 1,588 FT
47.9220°N / 119.0830°W
LOCATION · Electric City, US
N
WIND
170°4 kt
K3W7 · 1,588 FT
© OSM · CartoDB

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

METRIC
NOW · 01Z
+6H
+12H
+18H
WIND
170°/4
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
—
 
 
 
T / Td
10 / -4
 
 
 
ALTIM
30.01"
 
 
 

// Interpretation

VFR with light winds at 170°/4 kt. Visibility better than 10 statute miles and no reported cloud layers. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

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

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// Raw observation METAR string + decoded

METAR K3W7 130155Z AUTO 17004KT 10SM CLR 10/M04 A3001 RMK AO2

K3W7 · day 13 at 01:55 UTC · wind from 170° at 4 kt · visibility 10+ SM · temp 10°C / dewpoint -4°C · altimeter 30.01" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 170° @ 4 kt
ALL USABLE · WINDS CALM
N
WIND
170°4 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 2 ends
03 HDG 030° —CALM —— 4,199'
21 HDG 210° —CALM —— 4,199'
Pattern altitude: 2,588 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 -2°C

1,300FT
-288 FT BELOW FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV1,588 FT OAT+10°C ISA DELTA-2°C PRESSURE ALT1,497 FT
// Performance equivalent Operating here right now feels like operating at KOMK (Omak Airport, Omak, elev 1,305 ft) on a standard ISA day.
// Aircraft performance impact ENHANCED
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 · clear · no layers reported

FT 0 5k 10k 15k 20k 25k FRZ LVL · 6,639 FT K3W7 ELEV · 1,588 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL6,639 ft VFR MARGINunlimited

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

14:12ZSUNRISE
19:43ZSOLAR NOON
01:15ZSUNSET
01:46ZCIVIL END
CURRENT02:04Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS01:46Z (past) DAY LENGTH11h 03m
Waxing Crescent
ILLUMINATION3% MOONRISE15:35Z MOONSET02:38Z FULL MOON IN13 days

// Nearest reporting stations

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

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