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// Station · 8m ago

KPHN

St Clair County International Airport
CAT VFR
WIND 050° / 9 kt
VIS 10+ SM
CEILING CLR
T/Td 17°C / 5°C
ALTIM 30.20 inHg
ELEV 650 FT
42.9110°N / 82.5289°W
LOCATION · Port Huron, US
N
WIND
050°9 kt
KPHN · 650 FT
© OSM · CartoDB

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

METRIC
NOW · 21Z
+6H
+12H
+18H
WIND
050°/9
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
17 / 5
 
 
 
ALTIM
30.20"
 
 
 

// Interpretation

VFR with moderate winds at 050°/9 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 KPHN 302135Z AUTO 05009KT 10SM CLR 17/05 A3020 RMK AO2

KPHN · day 30 at 21:35 UTC · wind from 050° at 9 kt · visibility 10+ SM · temp 17°C / dewpoint 5°C · altimeter 30.20" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 050° @ 9 kt
2 USABLE · 2 AVOID · 1 CAUTION
N
WIND
050°9 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 2 usable
04 HDG 040° H9 kt X2 kt RIGHT PRIMARY · 5,104'
10 HDG 100° H6 kt X7 kt LEFT ⚠ HIGH XW · 78%
TAILWIND ENDS · AVOID 2 ends
28 HDG 280° T6 kt X7 kt RIGHT
22 HDG 220° T9 kt X2 kt LEFT
Pattern altitude: 1,650 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 +3°C

700FT
+50 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↘ -1,600 FT
2,700 1,050 -600
24h AGO18h12h6hNOW
FIELD ELEV650 FT OAT+17°C ISA DELTA+3°C PRESSURE ALT367 FT
// Performance equivalent Operating here right now feels like operating at KCFS (Tuscola Area Airport, Caro, elev 701 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+7%
-5%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+5%
-3%
Light jetCJ4, Phenom 300, M2
+3%
-2%

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 · 9,236 FT KPHN ELEV · 650 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL9,236 ft VFR MARGINunlimited

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

09:56ZSUNRISE
17:29ZSOLAR NOON
01:01ZSUNSET
01:35ZCIVIL END
CURRENT21:43Z DAYLIGHT REMAINING3h 17m VFR NIGHT BEGINS01:35Z (3h 52m) DAY LENGTH15h 05m
Full Moon
ILLUMINATION100% MOONRISE21:27Z MOONSET12:32Z 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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