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// Station · 6m ago

K81R

San Saba County Municipal Airport
CAT VFR
WIND CALM
VIS 10+ SM
CEILING Few/scattered only
T/Td 25.5°C / 21.3°C
ALTIM 29.97 inHg
ELEV 1,249 FT
31.2352°N / 98.7170°W
LOCATION · San Saba, US
N
WIND
000°0 kt
K81R · 1,249 FT
© OSM · CartoDB

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

METRIC
NOW · 01Z
+6H
+12H
+18H
WIND
CALM
 
 
 
VIS
10+ SM
 
 
 
CEILING
—
 
 
 
LAYERS
SCT055
 
 
 
T / Td
26 / 21
 
 
 
ALTIM
29.97"
 
 
 

// Interpretation

VFR with winds calm. Visibility better than 10 statute miles and scattered at 5,500 ft. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

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

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// Raw observation METAR string + decoded

METAR K81R 130155Z AUTO 00000KT 10SM SCT055 25/21 A2997 RMK AO2 T02550213

K81R · day 13 at 01:55 UTC · winds calm · visibility 10+ SM · scattered layer at 5,500 ft · temp 26°C / dewpoint 21°C · altimeter 29.97" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind CALM
ALL USABLE · WINDS CALM
N
WIND
000°calm
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 2 ends
13 HDG 130° —CALM —— 4,206'
31 HDG 310° —CALM —— 4,206'
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 +13°C

2,700FT
+1,451 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS loading…
FIELD ELEV1,249 FT OAT+26°C ISA DELTA+13°C PRESSURE ALT1,196 FT
// Performance equivalent Operating here right now feels like operating at KE41 (Reagan County Airport, Big Lake, elev 2,706 ft) on a standard ISA day.
// Aircraft performance impact MODERATE
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+27%
-19%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+19%
-12%
Light jetCJ4, Phenom 300, M2
+11%
-8%

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 · 1 reported · highest to lowest

FT 0 5k 10k 15k 20k 25k FRZ LVL · 14,128 FT SCT055 K81R ELEV · 1,249 FT
// Reported layers (highest → lowest)
SCT055
Scattered · base 5,500 ft AGL · ~3–4 oktas
// Computed
CEILING— HIGHEST LAYER5,500 ft TOTAL COVERAGE~40% (mixed) FREEZING LEVEL14,128 ft VFR MARGINunlimited

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

12:36ZSUNRISE
18:22ZSOLAR NOON
00:08ZSUNSET
00:32ZCIVIL END
CURRENT02:01Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS00:32Z (past) DAY LENGTH11h 31m
Waxing Crescent
ILLUMINATION3% MOONRISE13:59Z MOONSET01:31Z FULL MOON IN13 days

// Nearest reporting stations

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

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