// Station · 16m ago

KMDH

Southern Illinois Airport

CAT VFR

WIND 130° / 4 kt

VIS 10+ SM

CEILING CLR

T/Td 23°C / 18°C

ALTIM 30.09 inHg

ELEV 411 FT

37.7781°N / 89.2520°W

LOCATION · Murphysboro, US

WIND

130°4 kt

KMDH · 411 FT

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

METRIC

NOW · 13Z

+6H

+12H

+18H

WIND

130°/4

VIS

10+ SM

CEILING

CLR

LAYERS

—

T / Td

23 / 18

ALTIM

30.09"

// Interpretation

VFR with light winds at 130°/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.

Loading TAF forecast narrative…

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

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// Raw observation METAR string + decoded

METAR KMDH 251352Z 13004KT 10SM CLR 23/18 A3009

KMDH · day 25 at 13:52 UTC · wind from 130° at 4 kt · visibility 10+ SM · temp 23°C / dewpoint 18°C · altimeter 30.09" Hg

// Runway analysis · computed from current METAR wind

Wind 130° @ 4 kt

ALL USABLE · WINDS CALM

WIND

130°4 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 6 ends

18L HDG 180° —CALM —— 6,506'

36R HDG 360° —CALM —— 6,506'

06 HDG 060° —CALM —— 4,163'

24 HDG 240° —CALM —— 4,163'

18R HDG 180° —CALM —— 3,498'

36L HDG 360° —CALM —— 3,498'

Pattern altitude: 1,411 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 +8°C

1,300FT

+889 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV411 FT OAT+23°C ISA DELTA+8°C PRESSURE ALT240 FT

// Performance equivalent Operating here right now feels like operating at KDKB (DeKalb Taylor Municipal Airport, DeKalb, elev 914 ft) on a standard ISA day.

// Aircraft performance impact MINOR

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

// Reported layers (highest → lowest)

CLR

No reported cloud layers — clear sky from surface to reporting ceiling.

// Computed

CEILING— HIGHEST LAYER— TOTAL COVERAGEclear FREEZING LEVEL12,027 ft VFR MARGINunlimited

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

11:22ZSUNRISE

18:00ZSOLAR NOON

00:38ZSUNSET

01:06ZCIVIL END

CURRENT14:08Z DAYLIGHT REMAINING10h 30m VFR NIGHT BEGINS01:06Z (10h 57m) DAY LENGTH13h 16m

Waxing Gibbous

ILLUMINATION93% MOONRISE21:20Z MOONSET10:36Z FULL MOON IN2 days

// Nearest reporting stations

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

AIRSPACE

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