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// Station · 11m ago

KSIY

Siskiyou County Airport
CAT VFR
WIND CALM
VIS 10+ SM
CEILING CLR
T/Td 35.6°C / 1.1°C
ALTIM 30.03 inHg
ELEV 2,648 FT
41.7814°N / 122.4680°W
LOCATION · Montague, US
N
WIND
calm
KSIY · 2,648 FT
© OSM · CartoDB

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

METRIC
NOW · 22Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
36 / 1
 
 
 
ALTIM
30.03"
 
 
 

// 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 KSIY 142253Z AUTO 10SM CLR 36/01 A3003 RMK AO2 SLP147 T03560011

KSIY · day 14 at 22:53 UTC · winds calm · visibility 10+ SM · temp 36°C / dewpoint 1°C · altimeter 30.03" Hg · automated station w/ precipitation discriminator · sea-level pressure 1014.7 mb

// Runway analysis · computed from current METAR wind

Wind CALM
ALL USABLE · WINDS CALM
N
WIND
CALMcalm
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 2 ends
17 HDG 170° CALM 7,490'
35 HDG 350° CALM 7,490'
Pattern altitude: 3,648 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 +26°C

5,600FT
+2,952 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↘ -100 FT
6,100 4,450 2,800
24h AGO18h12h6hNOW
FIELD ELEV2,648 FT OAT+36°C ISA DELTA+26°C PRESSURE ALT2,536 FT
// Performance equivalent Operating here right now feels like operating at KTRK (Truckee Tahoe Airport, Truckee, elev 5,900 ft) on a standard ISA day.
// Aircraft performance impact SIGNIFICANT
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+56%
-39%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+39%
-25%
Light jetCJ4, Phenom 300, M2
+22%
-17%

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 · 20,628 FT KSIY ELEV · 2,648 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL20,628 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-8)

12:48ZSUNRISE
20:16ZSOLAR NOON
03:45ZSUNSET
04:18ZCIVIL END
CURRENT23:04Z DAYLIGHT REMAINING4h 40m VFR NIGHT BEGINS04:18Z (5h 13m) DAY LENGTH14h 56m
New Moon
ILLUMINATION0% MOONRISE12:56Z MOONSET03:53Z FULL MOON IN15 days

// Nearest reporting stations · 4 shown · 60 NM radius

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

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