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// Station · 23m ago

KPTW

Heritage Field
CAT VFR
WIND CALM
VIS 10+ SM
CEILING CLR
T/Td 21.1°C / 18.3°C
ALTIM 30.09 inHg
ELEV 309 FT
40.2396°N / 75.5567°W
LOCATION · Pottstown, US
N
WIND
000°0 kt
KPTW · 309 FT
© OSM · CartoDB

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

METRIC
NOW · 00Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
21 / 18
 
 
 
ALTIM
30.09"
 
 
 

// 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 KPTW 290054Z AUTO 00000KT 10SM CLR 21/18 A3009 RMK AO2 SLP184 T02110183 PWINO $

KPTW · day 29 at 00:54 UTC · winds calm · visibility 10+ SM · temp 21°C / dewpoint 18°C · altimeter 30.09" Hg · automated station w/ precipitation discriminator · sea-level pressure 1018.4 mb

// 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 2 ends
10 HDG 100° CALM 3,371'
28 HDG 280° CALM 3,371'
Pattern altitude: 1,309 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 +6°C

900FT
+591 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV309 FT OAT+21°C ISA DELTA+6°C PRESSURE ALT138 FT
// Performance equivalent Operating here right now feels like operating at KPJC (Zelienople Municipal Airport, Zelienople, elev 898 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+9%
-6%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+6%
-4%
Light jetCJ4, Phenom 300, M2
+4%
-3%

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 · 10,966 FT KPTW ELEV · 309 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL10,966 ft VFR MARGINunlimited

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

10:27ZSUNRISE
17:05ZSOLAR NOON
23:42ZSUNSET
00:10ZCIVIL END
CURRENT01:17Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS00:10Z (past) DAY LENGTH13h 15m
Waning Gibbous
ILLUMINATION99% MOONRISE23:14Z MOONSET12:29Z FULL MOON IN29 days

// Nearest reporting stations

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

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