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// Station · 5m ago

KRYY

Cobb County International Airport-McCollum Field
CAT VFR
WIND CALM
VIS 10+ SM
CEILING CLR
T/Td 18.9°C / 17.2°C
ALTIM 30.09 inHg
ELEV 1,040 FT
34.0132°N / 84.5972°W
LOCATION · Atlanta, US
N
WIND
000°0 kt
KRYY · 1,040 FT
© OSM · CartoDB

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

METRIC
NOW · 01Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
—
 
 
 
T / Td
19 / 17
 
 
 
ALTIM
30.09"
 
 
 

// Interpretation

VFR with winds calm. 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 KRYY 130150Z 00000KT 10SM CLR 19/17 A3009 RMK AO2 SLP182 T01890172 PNO $

KRYY · day 13 at 01:50 UTC · winds calm · visibility 10+ SM · temp 19°C / dewpoint 17°C · altimeter 30.09" Hg · automated station w/ precipitation discriminator · sea-level pressure 1018.2 mb

// Runway analysis · computed from current METAR wind

Wind CALM
ALL USABLE · WINDS CALM
N
WIND
000°calm
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 2 ends
09 HDG 090° —CALM —— 6,295'
27 HDG 270° —CALM —— 6,295'
Pattern altitude: 2,040 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

1,500FT
+460 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV1,040 FT OAT+19°C ISA DELTA+6°C PRESSURE ALT869 FT
// Performance equivalent Operating here right now feels like operating at K49A (Gilmer County Airport, Ellijay, elev 1,486 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+15%
-11%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+11%
-7%
Light jetCJ4, Phenom 300, M2
+6%
-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. 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 · 10,585 FT KRYY ELEV · 1,040 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL10,585 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-6)

11:42ZSUNRISE
17:26ZSOLAR NOON
23:09ZSUNSET
23:35ZCIVIL END
CURRENT01:55Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS23:35Z (past) DAY LENGTH11h 27m
Waxing Crescent
ILLUMINATION3% MOONRISE13:04Z MOONSET00:32Z 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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