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// Station · 33m ago

KMWN

Mount Washington Observatory
CAT LIFR
WIND 300° / 32 kt G39
VIS 0.00 SM
CEILING
T/Td 4°C / 4°C
ALTIM — inHg
WX FG
ELEV 6,288 FT
44.2703°N / 71.3033°W
N
WIND
300°32 kt
KMWN · 6,288 FT
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// Current + 24h forecast · METAR loaded · TAF loading…

METRIC
NOW · 02Z
+6H
+12H
+18H
WIND
300°/32G39
 
 
 
VIS
0.00 SM
 
 
 
CEILING
 
 
 
LAYERS
OVX000
 
 
 
T / Td
4 / 4
 
 
 
ALTIM
 
 
 

// Interpretation

LIFR — visibility 0.00 SM. Strong winds at 300°/32 kt, gusting 39, visibility 0.00 SM, ovx at 0 ft. Reported weather: fog (FG). Fog is water droplets suspended at the surface with visibility under 5/8 SM; it typically burns off with daytime heating or a pickup in wind. LIFR is the lowest standard category. Would improve to IFR above 500 ft and 1 SM.

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

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// Raw observation METAR string + decoded

METAR KMWN 290251Z 30032G39KT 0SM FG VV000 04/04 RMK

KMWN · day 29 at 02:51 UTC · wind from 300° at 32 kt, gusts to 39 kt · visibility 0.00 SM · ovx at 0 ft · temp 4°C / dewpoint 4°C · weather: fog (FG)

// Runway analysis

No runway data on file for KMWN.

// Density altitude · ISA +1°C

6,500FT
+212 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV6,288 FT OAT+4°C ISA DELTA+1°C PRESSURE ALT6,288 FT
// Performance equivalent Operating here right now feels like operating at KAFF (USAF Academy Airfield, Colorado Springs, elev 6,572 ft) on a standard ISA day.
// Aircraft performance impact MODERATE
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+65%
-46%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+46%
-29%
Light jetCJ4, Phenom 300, M2
+26%
-20%

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 · 8,308 FT KMWN ELEV · 6,288 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL8,308 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC-5)

10:04ZSUNRISE
16:47ZSOLAR NOON
23:31ZSUNSET
00:01ZCIVIL END
CURRENT03:24Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS00:01Z (past) DAY LENGTH13h 26m
Waning Gibbous
ILLUMINATION99% MOONRISE22:56Z MOONSET12:22Z FULL MOON IN28 days

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

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