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// Station · 18m ago

KPHN

St Clair County International Airport
CAT VFR
WIND 250° / 3 kt
VIS 10+ SM
CEILING CLR
T/Td 29°C / 19°C
ALTIM 30.02 inHg
ELEV 650 FT
42.9110°N / 82.5289°W
LOCATION · Port Huron, US
N
WIND
250°3 kt
KPHN · 650 FT
© OSM · CartoDB

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

METRIC
NOW · 01Z
+6H
+12H
+18H
WIND
250°/3
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
29 / 19
 
 
 
ALTIM
30.02"
 
 
 

// Interpretation

VFR with light winds at 250°/3 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 150155Z AUTO 25003KT 10SM CLR 29/19 A3002 RMK AO2

KPHN · day 15 at 01:55 UTC · wind from 250° at 3 kt · visibility 10+ SM · temp 29°C / dewpoint 19°C · altimeter 30.02" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 250° @ 3 kt
ALL USABLE · WINDS CALM
N
WIND
250°3 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 4 ends
04 HDG 040° CALM 5,104'
22 HDG 220° CALM 5,104'
10 HDG 100° CALM 4,000'
28 HDG 280° CALM 4,000'
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 +15°C

2,400FT
+1,750 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +1,000 FT
3,500 2,050 600
24h AGO18h12h6hNOW
FIELD ELEV650 FT OAT+29°C ISA DELTA+15°C PRESSURE ALT547 FT
// Performance equivalent Operating here right now feels like operating at KJST (John Murtha Johnstown Cambria County Airport, Johnstown, elev 2,284 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+24%
-17%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+17%
-11%
Light jetCJ4, Phenom 300, M2
+10%
-7%

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 · 15,296 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 LEVEL15,296 ft VFR MARGINunlimited

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

10:05ZSUNRISE
17:37ZSOLAR NOON
01:09ZSUNSET
01:43ZCIVIL END
CURRENT02:13Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS01:43Z (past) DAY LENGTH15h 03m
New Moon
ILLUMINATION0% MOONRISE10:19Z MOONSET01:23Z FULL MOON IN14 days

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

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

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