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// Station · 13m ago

KW78

William M Tuck Airport
CAT VFR
WIND CALM
VIS 10+ SM
CEILING CLR
T/Td 27.2°C / 9.9°C
ALTIM 29.91 inHg
ELEV 420 FT
36.7100°N / 78.8480°W
LOCATION · South Boston, US
N
WIND
000°0 kt
KW78 · 420 FT
© OSM · CartoDB

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

METRIC
NOW · 19Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
27 / 10
 
 
 
ALTIM
29.91"
 
 
 

// 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 KW78 301915Z AUTO 00000KT 10SM CLR 27/10 A2991 RMK AO1 T02720099

KW78 · day 30 at 19:15 UTC · winds calm · visibility 10+ SM · temp 27°C / dewpoint 10°C · altimeter 29.91" Hg · automated station (no precipitation discriminator)

// 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 4 ends
01 HDG 010° CALM 4,011'
19 HDG 190° CALM 4,011'
05 HDG 050° CALM 2,700'
23 HDG 230° CALM 2,700'
Pattern altitude: 1,420 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

2,000FT
+1,580 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +200 FT
2,300 1,100 -100
24h AGO18h12h6hNOW
FIELD ELEV420 FT OAT+27°C ISA DELTA+13°C PRESSURE ALT426 FT
// Performance equivalent Operating here right now feels like operating at KVJI (Virginia Highlands Airport, Abingdon, elev 2,087 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+20%
-14%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+14%
-9%
Light jetCJ4, Phenom 300, M2
+8%
-6%

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.

// Cloud layers · clear · no layers reported

FT 0 5k 10k 15k 20k 25k FRZ LVL · 14,157 FT KW78 ELEV · 420 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL14,157 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-5)

10:00ZSUNRISE
17:14ZSOLAR NOON
00:28ZSUNSET
00:58ZCIVIL END
CURRENT19:28Z DAYLIGHT REMAINING5h 00m VFR NIGHT BEGINS00:58Z (5h 30m) DAY LENGTH14h 28m
Full Moon
ILLUMINATION99% MOONRISE21:26Z MOONSET11:54Z FULL MOON IN1 day

// Nearest reporting stations · 5 shown · 60 NM radius

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

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