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// KGYY · Gary/Chicago International Airport · Gary

// Station · 5m ago

KGYY

Gary/Chicago International Airport
CAT VFR
WIND 210° / 9 kt
VIS 10+ SM
CEILING CLR
T/Td 27°C / 16°C
ALTIM 29.77 inHg
ELEV 591 FT
41.6171°N / 87.4132°W
LOCATION · Gary, US
N
WIND
210°9 kt
KGYY · 591 FT
© OSM · CartoDB

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

METRIC
NOW · 01Z
+6H
+12H
+18H
WIND
210°/9
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
—
 
 
 
T / Td
27 / 16
 
 
 
ALTIM
29.77"
 
 
 

Loading TAF forecast…

// Interpretation

VFR with moderate winds at 210°/9 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 KGYY 130150Z 21009KT 10SM CLR 27/16 A2977

KGYY · day 13 at 01:50 UTC · wind from 210° at 9 kt · visibility 10+ SM · temp 27°C / dewpoint 16°C · altimeter 29.77" Hg

// Runway analysis · computed from current METAR wind

Wind 210° @ 9 kt
3 USABLE · 1 AVOID · 2 CAUTION
N
WIND
210°9 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 3 usable
20★ HDG 200° H9 kt X2 kt RIGHT PRIMARY · 3,604'
12 HDG 120° H0 kt X9 kt RIGHT ⚠ HIGH XW · 100%
30 HDG 300° H0 kt X9 kt LEFT ⚠ HIGH XW · 100%
TAILWIND ENDS · AVOID 1 ends
02 HDG 020° T9 kt X2 kt LEFT —
Pattern altitude: 1,591 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 +13°C

2,400FT
+1,809 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV591 FT OAT+27°C ISA DELTA+13°C PRESSURE ALT739 FT
// Performance equivalent Operating here right now feels like operating at KBKW (Raleigh County Memorial Airport, Beaver, elev 2,504 ft) on a standard ISA day.
// Aircraft performance impact MODERATE
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+24%
-17%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+17%
-11%
Light jetCJ4, Phenom 300, M2
+10%
-7%

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 · 14,227 FT KGYY ELEV · 591 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL14,227 ft VFR MARGINunlimited

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

11:59ZSUNRISE
17:37ZSOLAR NOON
23:15ZSUNSET
23:43ZCIVIL END
CURRENT01:55Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS23:43Z (past) DAY LENGTH11h 15m
Waxing Crescent
ILLUMINATION3% MOONRISE13:22Z MOONSET00:37Z 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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