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// KPHN · St Clair County International Airport · Port Huron

// Station · 5m ago

KPHN

St Clair County International Airport
CAT VFR
WIND 210° / 7 kt
VIS 10+ SM
CEILING CLR
T/Td 18°C / 16°C
ALTIM 29.73 inHg
ELEV 650 FT
42.9110°N / 82.5289°W
LOCATION · Port Huron, US
N
WIND
210°7 kt
KPHN · 650 FT
© OSM · CartoDB

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

METRIC
NOW · 12Z
+6H
+12H
+18H
WIND
210°/7
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
—
 
 
 
T / Td
18 / 16
 
 
 
ALTIM
29.73"
 
 
 

Loading TAF forecast…

// Interpretation

VFR with light winds at 210°/7 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 131215Z AUTO 21007KT 10SM CLR 18/16 A2973 RMK AO2

KPHN · day 13 at 12:15 UTC · wind from 210° at 7 kt · visibility 10+ SM · temp 18°C / dewpoint 16°C · altimeter 29.73" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 210° @ 7 kt
2 USABLE · 2 AVOID · 1 CAUTION
N
WIND
210°7 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 2 usable
22★ HDG 220° H7 kt X1 kt LEFT PRIMARY · 5,104'
28 HDG 280° H2 kt X7 kt LEFT ⚠ HIGH XW · 100%
TAILWIND ENDS · AVOID 2 ends
10 HDG 100° T2 kt X7 kt RIGHT —
04 HDG 040° T7 kt X1 kt RIGHT —
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 +5°C

1,400FT
+750 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +500 FT
2,200 1,450 700
24h AGO18h12h6hNOW
FIELD ELEV650 FT OAT+18°C ISA DELTA+5°C PRESSURE ALT836 FT
// Performance equivalent Operating here right now feels like operating at KGLR (Gaylord Regional Airport, Gaylord, elev 1,328 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+14%
-10%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+10%
-6%
Light jetCJ4, Phenom 300, M2
+6%
-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

FT 0 5k 10k 15k 20k 25k FRZ LVL · 9,741 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 LEVEL9,741 ft VFR MARGINunlimited

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

11:42ZSUNRISE
17:17ZSOLAR NOON
22:52ZSUNSET
23:21ZCIVIL END
CURRENT12:20Z DAYLIGHT REMAINING10h 32m VFR NIGHT BEGINS23:21Z (11h 00m) DAY LENGTH11h 10m
Waxing Crescent
ILLUMINATION5% MOONRISE13:25Z MOONSET00:36Z FULL MOON IN13 days

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