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// Station · 4m ago

K81R

San Saba County Municipal Airport
CAT MVFR
WIND 100° / 14 kt
VIS 5.0 SM
CEILING BKN at 2,500 ft
T/Td 22.4°C / 21.7°C
ALTIM 30.11 inHg
WX -RA BR
ELEV 1,249 FT
31.2352°N / 98.7170°W
LOCATION · San Saba, US
N
WIND
100°14 kt
K81R · 1,249 FT
© OSM · CartoDB

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

METRIC
NOW · 21Z
+6H
+12H
+18H
WIND
100°/14
 
 
 
VIS
5.0 SM
 
 
 
CEILING
BKN025
 
 
 
LAYERS
SCT016 BKN025 OVC055
 
 
 
T / Td
22 / 22
 
 
 
ALTIM
30.11"
 
 
 

// Interpretation

MVFR — ceiling 2,500 ft. Brisk winds at 100°/14 kt, visibility 5.0 SM, scattered at 1,600 ft, broken at 2,500 ft, and overcast at 5,500 ft. Reported weather: -RA BR. 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 K81R 142115Z AUTO 10014KT 5SM -RA BR SCT016 BKN025 OVC055 22/22 A3011 RMK AO2 P0003 T02240217

K81R · day 14 at 21:15 UTC · wind from 100° at 14 kt · visibility 5.0 SM · scattered layer at 1,600 ft · broken layer at 2,500 ft · overcast at 5,500 ft · temp 22°C / dewpoint 22°C · altimeter 30.11" Hg · weather: -RA BR · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 100° @ 14 kt
1 USABLE · 1 AVOID
N
WIND
100°14 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 1 usable
13 HDG 130° H12 kt X7 kt LEFT PRIMARY · 4,206'
TAILWIND ENDS · AVOID 1 ends
31 HDG 310° T12 kt X7 kt RIGHT
Pattern altitude: 2,249 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 +9°C

2,200FT
+951 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↘ -800 FT
3,300 2,650 2,000
24h AGO18h12h6hNOW
FIELD ELEV1,249 FT OAT+22°C ISA DELTA+9°C PRESSURE ALT1,057 FT
// Performance equivalent Operating here right now feels like operating at KSOA (Sonora Municipal Airport, Sonora, elev 2,140 ft) on a standard ISA day.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+22%
-15%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+15%
-10%
Light jetCJ4, Phenom 300, M2
+9%
-7%

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 · 3 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 12,562 FT SCT016 BKN025 · CEILING OVC055 K81R ELEV · 1,249 FT
// Reported layers (highest → lowest)
OVC055
Overcast · base 5,500 ft AGL · 8 oktas
BKN025
Broken · base 2,500 ft AGL · ~5–7 oktas
SCT016
Scattered · base 1,600 ft AGL · ~3–4 oktas
// Computed
CEILING2,500 ft AGL HIGHEST LAYER5,500 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL12,562 ft VFR MARGIN-500 ft

// Sun & Moon · times in Z · bar = local day (UTC-7)

11:41ZSUNRISE
18:41ZSOLAR NOON
01:41ZSUNSET
02:09ZCIVIL END
CURRENT21:19Z DAYLIGHT REMAINING4h 22m VFR NIGHT BEGINS02:09Z (4h 49m) DAY LENGTH14h 00m
New Moon
ILLUMINATION0% MOONRISE11:46Z MOONSET01:46Z FULL MOON IN15 days

// Nearest reporting stations · 5 shown · 60 NM radius

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

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