// Station · 7m ago
KMTN
Martin State Airport
CAT LIFR
WIND CALM
VIS 0.25 SM
CEILING OVC at 200 ft
T/Td 21°C / 20°C
ALTIM 29.99 inHg
WX FG
ELEV 21 FT
39.3257°N / 76.4138°W
LOCATION · Baltimore, US
WIND
000°0 kt
KMTN · 21 FT
© OSM · CartoDB
// Current + 24h forecast · METAR loaded · TAF loading…
METRIC
NOW · 11Z
+6H
+12H
+18H
WIND
CALM
VIS
0.25 SM
CEILING
OVC002
LAYERS
OVC002
T / Td
21 / 20
ALTIM
29.99"
// Interpretation
LIFR — ceiling 200 ft. Winds calm, visibility 0.25 SM, overcast at 200 ft. Reported weather: FG. Reported weather: FG. LIFR is the lowest standard category. Would improve to IFR above 500 ft and 1 SM.
Loading TAF forecast narrative…
// Want this glance-able on 10 airports? METAR Deck →// Raw observation METAR string + decoded
METAR KMTN 271146Z 00000KT 1/4SM FG OVC002 21/20 A2999
KMTN · day 27 at 11:46 UTC · winds calm · visibility 0.25 SM · overcast at 200 ft · temp 21°C / dewpoint 20°C · altimeter 29.99" Hg · weather: FG
// Runway analysis · computed from current METAR wind
Wind CALM
ALL USABLE · WINDS CALM
WIND
000°calm
HEADWIND
CAUTION · HIGH XW
AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS
2 ends
15
HDG 150°
—CALM
——
6,999'
33
HDG 330°
—CALM
——
6,999'
Pattern altitude: 1,021 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 +6°C
700FT
+679 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS
↗ +400 FT
24h AGO18h12h6hNOW
FIELD ELEV21 FT
OAT+21°C
ISA DELTA+6°C
PRESSURE ALT-53 FT
// Performance equivalent
Operating here right now feels like operating at KHGR
(Hagerstown Regional Richard A Henson Field, Hagerstown, elev 703 ft)
on a standard ISA day.
// Aircraft performance impact
MINOR
TAKEOFF ROLL
CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+7%
-5%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+5%
-3%
Light jetCJ4, Phenom 300, M2
+3%
-2%
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 · 1 reported · highest to lowest
// Sun & Moon · times in Z · bar = local day (UTC-5)
09:44ZSUNRISE
17:04ZSOLAR NOON
00:23ZSUNSET
00:54ZCIVIL END
CURRENT11:53Z
DAYLIGHT REMAINING12h 29m
VFR NIGHT BEGINS00:54Z (13h 01m)
DAY LENGTH14h 38m
Waxing Gibbous
ILLUMINATION83%
MOONRISE18:29Z
MOONSET09:08Z
FULL MOON IN4 days
// Nearest reporting stations · 3 shown · 60 NM radius
KDAA
IFR
Davison Army Air Field · Fort Belvoir
- WIND
- CALM
- VIS
- 10+ SM
- CEILING
- OVC007
- DIST
- 51 NM SW
- AGE
- 17m ago
KIAD
LIFR
→
IFR
14Z
Washington Dulles International Airport · Dulles
- WIND
- CALM
- VIS
- 1.5 SM
- CEILING
- OVC003
- DIST
- 54 NM SW
- AGE
- 1h 1m ago
KMDT
VFR
Harrisburg International Airport · Harrisburg
- WIND
- CALM
- VIS
- 8.0 SM
- CEILING
- BKN080
- DIST
- 54 NM N
- AGE
- 57m ago
// Area map · 60 NM radius · CartoDB Dark Matter + aeronautical overlay
© OpenStreetMap · CartoDB · OpenAIP
//
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