// Station · 46m ago

DTTB

Bizerte Sidi Ahmed Air Base

CAT VFR

WIND CALM

VIS 6+ SM

CEILING Few/scattered only

T/Td 26°C / 22°C

ALTIM 30.03 inHg

ELEV 20 FT

37.2424°N / 9.7870°E

LOCATION · Borj Challouf, TN

WIND

000°0 kt

DTTB · 20 FT

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

METRIC

NOW · 23Z

+6H

+12H

+18H

WIND

CALM

VIS

6+ SM

CEILING

—

LAYERS

FEW020

T / Td

26 / 22

ALTIM

30.03"

// Interpretation

VFR with winds calm. Visibility 6+ SM and a few at 2,000 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 DTTB 122300Z 00000KT 9999 FEW020 26/22 Q1017

DTTB · day 12 at 23:00 UTC · winds calm · visibility 6+ SM · a few clouds at 2,000 ft · temp 26°C / dewpoint 22°C · altimeter 30.03" Hg

// Runway analysis · computed from current METAR wind

Wind CALM

ALL USABLE · WINDS CALM

WIND

000°calm

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 4 ends

08 HDG 080° —CALM —— 9,845'

26 HDG 260° —CALM —— 9,845'

11 HDG 110° —CALM —— 3,975'

29 HDG 290° —CALM —— 3,975'

Pattern altitude: 1,020 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 +11°C

1,200FT

+1,180 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV20 FT OAT+26°C ISA DELTA+11°C PRESSURE ALT-92 FT

// Performance equivalent Operating here right now feels like operating at DTTF (Gafsa Ksar International Airport, Gafsa, elev 1,060 ft) on a standard ISA day.

// Aircraft performance impact MODERATE

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+12%

-8%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+8%

-5%

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 · 1 reported · highest to lowest

// Reported layers (highest → lowest)

FEW020

Few · base 2,000 ft AGL · ~1–2 oktas

// Computed

CEILING— HIGHEST LAYER2,000 ft TOTAL COVERAGE~15% (sparse) FREEZING LEVEL13,151 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+1)

04:36ZSUNRISE

11:27ZSOLAR NOON

18:17ZSUNSET

18:45ZCIVIL END

CURRENT23:46Z DAYLIGHT REMAINING18h 31m VFR NIGHT BEGINS18:45Z (18h 58m) DAY LENGTH13h 41m

New Moon

ILLUMINATION0% MOONRISE04:20Z MOONSET18:01Z FULL MOON IN15 days

// Nearest reporting stations

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

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