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// Station · 28m ago

KMWN

Mount Washington Observatory
CAT LIFR
WIND 280° / 41 kt G70
VIS 0.00 SM
CEILING
T/Td 13°C / 13°C
ALTIM — inHg
WX TS RA FG
ELEV 6,288 FT
44.2703°N / 71.3033°W
N
WIND
280°41 kt
KMWN · 6,288 FT
© OSM · CartoDB

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

METRIC
NOW · 01Z
+6H
+12H
+18H
WIND
280°/41G70
 
 
 
VIS
0.00 SM
 
 
 
CEILING
 
 
 
LAYERS
OVX000
 
 
 
T / Td
13 / 13
 
 
 
ALTIM
 
 
 

// Interpretation

LIFR — visibility 0.00 SM. Strong winds at 280°/41 kt, gusting 70, visibility 0.00 SM, ovx at 0 ft. Reported weather: TS RA FG. Reported weather: TS RA FG. LIFR is the lowest standard category. Would improve to IFR above 500 ft and 1 SM.

Loading TAF forecast narrative…

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

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// Raw observation METAR string + decoded

METAR KMWN 150147Z 28041G70KT 0SM TS RA FG VV000 13/13 RMK PK WND 28072/42 CONS LTGICCG OHD SHGRB39E43 TS OHD MOV SE GR 1/2

KMWN · day 15 at 01:47 UTC · wind from 280° at 41 kt, gusts to 70 kt · visibility 0.00 SM · ovx at 0 ft · temp 13°C / dewpoint 13°C · weather: TS RA FG

// Runway analysis

No runway data on file for KMWN.

// Density altitude · ISA +10°C

7,500FT
+1,212 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +200 FT
8,000 7,600 7,200
24h AGO18h12h6hNOW
FIELD ELEV6,288 FT OAT+13°C ISA DELTA+10°C PRESSURE ALT6,288 FT
// Performance equivalent Operating here right now feels like operating at KANK (Salida Airport - Harriet Alexander Field, Salida, elev 7,523 ft) on a standard ISA day.
// Aircraft performance impact DANGEROUS
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+75%
-53%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+53%
-34%
Light jetCJ4, Phenom 300, M2
+30%
-23%

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 · 12,854 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 LEVEL12,854 ft VFR MARGINunlimited

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

09:15ZSUNRISE
16:52ZSOLAR NOON
00:28ZSUNSET
01:04ZCIVIL END
CURRENT02:15Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS01:04Z (past) DAY LENGTH15h 13m
New Moon
ILLUMINATION0% MOONRISE09:30Z MOONSET00:43Z 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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