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// KGRF · Gray Army Air Field · Fort Lewis/Tacoma

// STALE Observation is 1h 12m old — METAR cadence is typically hourly. A fresh report may be on its way.

// Station · 1h 12m ago · STALE

KGRF

Gray Army Air Field
CAT VFR
WIND 090° / 3 kt
VIS 10+ SM
CEILING CLR
T/Td 13.1°C / 11.3°C
ALTIM 29.92 inHg
ELEV 300 FT
47.0792°N / 122.5810°W
LOCATION · Fort Lewis/Tacoma, US
N
WIND
090°3 kt
KGRF · 300 FT
© OSM · CartoDB

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

METRIC
NOW · 12Z
+6H
+12H
+18H
WIND
090°/3
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
—
 
 
 
T / Td
13 / 11
 
 
 
ALTIM
29.92"
 
 
 

Loading TAF forecast…

// Interpretation

VFR with light winds at 090°/3 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.

Loading TAF forecast narrative…

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

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// Raw observation METAR string + decoded

METAR KGRF 251255Z AUTO 09003KT 10SM CLR 13/11 A2992 RMK AO2 SLP134 T01310113 $

KGRF · day 25 at 12:55 UTC · wind from 090° at 3 kt · visibility 10+ SM · temp 13°C / dewpoint 11°C · altimeter 29.92" Hg · automated station w/ precipitation discriminator · sea-level pressure 1013.4 mb

// Runway analysis · computed from current METAR wind

Wind 090° @ 3 kt
ALL USABLE · WINDS CALM
N
WIND
090°3 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 2 ends
15 HDG 150° —CALM —— 6,124'
33 HDG 330° —CALM —— 6,124'
Pattern altitude: 1,300 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 -1°C

100FT
-200 FT BELOW FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV300 FT OAT+13°C ISA DELTA-1°C PRESSURE ALT297 FT
// Performance equivalent Operating here right now feels like operating at WA09 (Roche Harbor Airport, Roche Harbor, elev 100 ft) on a standard ISA day.
// Aircraft performance impact ENHANCED
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+1%
-1%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+1%
-0%
Light jetCJ4, Phenom 300, M2
+0%
-0%

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 · 6,916 FT KGRF ELEV · 300 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL6,916 ft VFR MARGINunlimited

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

13:21ZSUNRISE
20:13ZSOLAR NOON
03:05ZSUNSET
03:38ZCIVIL END
CURRENT14:07Z DAYLIGHT REMAINING12h 58m VFR NIGHT BEGINS03:38Z (13h 30m) DAY LENGTH13h 43m
Waxing Gibbous
ILLUMINATION93% MOONRISE23:20Z MOONSET13:03Z FULL MOON IN3 days

// Nearest reporting stations

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

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