// Station · 29m ago

UDSG

Shirak International Airport

CAT VFR

WIND VRB / 1 kt

VIS 6+ SM

CEILING Few/scattered only

T/Td 6°C / 4°C

ALTIM 30.30 inHg

ELEV 5,000 FT

40.7504°N / 43.8593°E

LOCATION · Gyumri, AM

WIND

VRB1 kt

UDSG · 5,000 FT

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

METRIC

NOW · 01Z

+6H

+12H

+18H

WIND

VRB/1

VIS

6+ SM

CEILING

—

LAYERS

FEW049

T / Td

6 / 4

ALTIM

30.30"

// Interpretation

VFR with light winds at variable/1 kt. Visibility 6+ SM and a few at 4,900 ft. 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 UDSG 130130Z VRB01KT 9999 FEW049CB 06/04 Q1026 NOSIG

UDSG · day 13 at 01:30 UTC · wind variable at 1 kt · visibility 6+ SM · a few clouds at 4,900 ft · temp 6°C / dewpoint 4°C · altimeter 30.30" Hg

// Runway analysis · computed from current METAR wind

Wind VRB @ 1 kt

ALL USABLE · WINDS CALM

WIND

VRB1 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 2 ends

02 HDG 020° —CALM —— 10,564'

20 HDG 200° —CALM —— 10,564'

Pattern altitude: 6,000 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 +0°C

4,600FT

-400 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV5,000 FT OAT+6°C ISA DELTA+0°C PRESSURE ALT4,622 FT

// Performance equivalent Your aircraft will perform as if it's at a field 4,600 ft high on a standard ISA day — that's -400 ft above UDSG's actual elevation.

// Aircraft performance impact ENHANCED

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+46%

-32%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+32%

-21%

Light jetCJ4, Phenom 300, M2

+18%

-14%

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 · 1 reported · highest to lowest

// Reported layers (highest → lowest)

FEW049

Few · base 4,900 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER4,900 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL8,030 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+3)

03:14ZSUNRISE

08:52ZSOLAR NOON

14:29ZSUNSET

14:57ZCIVIL END

CURRENT01:59Z DAYLIGHT REMAINING12h 29m VFR NIGHT BEGINS14:57Z (12h 57m) DAY LENGTH11h 15m

Waxing Crescent

ILLUMINATION3% MOONRISE04:37Z MOONSET15:52Z 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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