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// STALE Observation is 1h 6m old — METAR cadence is typically hourly. A fresh report may be on its way.

// Station · 1h 6m ago · STALE

CYYW

Armstrong Airport
CAT VFR
WIND CALM
VIS 9.0 SM
CEILING CLR
T/Td 15°C / 13°C
ALTIM 30.01 inHg
ELEV 1,058 FT
50.2903°N / 88.9097°W
LOCATION · Armstrong, CA
N
WIND
000°0 kt
CYYW · 1,058 FT
© OSM · CartoDB

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

METRIC
NOW · 12Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
9.0 SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
15 / 13
 
 
 
ALTIM
30.01"
 
 
 

// Interpretation

VFR with winds calm. Visibility 9.0 SM 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 CYYW 111200Z AUTO 00000KT 9SM CLR 15/13 A3001 RMK SLP155 DENSITY ALT 1300FT

CYYW · day 11 at 12:00 UTC · winds calm · visibility 9.0 SM · temp 15°C / dewpoint 13°C · altimeter 30.01" Hg · sea-level pressure 1015.5 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 4 ends
12 HDG 120° CALM 4,000'
30 HDG 300° CALM 4,000'
18 HDG 180° CALM 2,940'
36 HDG 360° CALM 2,940'
Pattern altitude: 2,058 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 +2°C

1,200FT
+142 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↘ -1,000 FT
3,400 1,850 300
24h AGO18h12h6hNOW
FIELD ELEV1,058 FT OAT+15°C ISA DELTA+2°C PRESSURE ALT967 FT
// Performance equivalent Operating here right now feels like operating at CYMG (Manitouwadge Airport, Manitouwadge, elev 1,198 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+12%
-8%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+8%
-5%
Light jetCJ4, Phenom 300, M2
+5%
-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.

// Cloud layers · clear · no layers reported

FT 0 5k 10k 15k 20k 25k FRZ LVL · 8,634 FT CYYW ELEV · 1,058 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL8,634 ft VFR MARGINunlimited

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

09:58ZSUNRISE
18:02ZSOLAR NOON
02:05ZSUNSET
02:49ZCIVIL END
CURRENT13:06Z DAYLIGHT REMAINING12h 59m VFR NIGHT BEGINS02:49Z (13h 42m) DAY LENGTH16h 07m
Waning Crescent
ILLUMINATION11% MOONRISE07:20Z MOONSET23:27Z FULL MOON IN18 days

// Nearest reporting stations · 5 shown · 150 NM (sparse area)

// Area map · 140 NM radius · CartoDB Dark Matter + aeronautical overlay

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