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// Station · 34m ago

KSMN

Lemhi County Airport
CAT MVFR
WIND 130° / 3 kt
VIS 10+ SM
CEILING BKN at 3,000 ft
T/Td 4.4°C / 1.7°C
ALTIM 30.00 inHg
ELEV 4,043 FT
45.1222°N / 113.8820°W
LOCATION · Salmon, US
N
WIND
130°3 kt
KSMN · 4,043 FT
© OSM · CartoDB

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

METRIC
NOW · 01Z
+6H
+12H
+18H
WIND
130°/3
 
 
 
VIS
10+ SM
 
 
 
CEILING
BKN030
 
 
 
LAYERS
BKN030 OVC070
 
 
 
T / Td
4 / 2
 
 
 
ALTIM
30.00"
 
 
 

// Interpretation

MVFR — ceiling 3,000 ft. Light winds at 130°/3 kt, visibility better than 10 statute miles, broken at 3,000 ft, and overcast at 7,000 ft. Would drop to IFR below 1,000 ft ceiling or 3 SM visibility, or rise back to VFR above 3,000 ft and 5 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR KSMN 130156Z AUTO 13003KT 10SM BKN030 OVC070 04/02 A3000 RMK AO2 SLP175 T00440017

KSMN · day 13 at 01:56 UTC · wind from 130° at 3 kt · visibility 10+ SM · broken layer at 3,000 ft · overcast at 7,000 ft · temp 4°C / dewpoint 2°C · altimeter 30.00" Hg · automated station w/ precipitation discriminator · sea-level pressure 1017.5 mb

// Runway analysis · computed from current METAR wind

Wind 130° @ 3 kt
ALL USABLE · WINDS CALM
N
WIND
130°3 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 2 ends
17 HDG 170° —CALM —— 5,510'
35 HDG 350° —CALM —— 5,510'
Pattern altitude: 5,043 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

3,600FT
-443 FT BELOW FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV4,043 FT OAT+4°C ISA DELTA-3°C PRESSURE ALT3,961 FT
// Performance equivalent Operating here right now feels like operating at KGNG (Gooding Municipal Airport, Gooding, elev 3,732 ft) on a standard ISA day.
// Aircraft performance impact ENHANCED
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+36%
-25%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+25%
-16%
Light jetCJ4, Phenom 300, M2
+14%
-11%

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 · 2 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 6,265 FT BKN030 · CEILING OVC070 KSMN ELEV · 4,043 FT
// Reported layers (highest → lowest)
OVC070
Overcast · base 7,000 ft AGL · 8 oktas
BKN030
Broken · base 3,000 ft AGL · ~5–7 oktas
// Computed
CEILING3,000 ft AGL HIGHEST LAYER7,000 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL6,265 ft VFR MARGIN+0 ft

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

13:48ZSUNRISE
19:23ZSOLAR NOON
00:57ZSUNSET
01:27ZCIVIL END
CURRENT02:30Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS01:27Z (past) DAY LENGTH11h 09m
Waxing Crescent
ILLUMINATION3% MOONRISE15:12Z MOONSET02:21Z FULL MOON IN13 days

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

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