// Station · 13m ago

KSPF

Black Hills Airport-Clyde Ice Field

CAT MVFR

WIND 310° / 6 kt

VIS 10+ SM

CEILING OVC at 1,000 ft

T/Td 3°C / 2°C

ALTIM 29.99 inHg

ELEV 3,931 FT

44.4803°N / 103.7830°W

LOCATION · Spearfish, US

WIND

310°6 kt

KSPF · 3,931 FT

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

METRIC

NOW · 06Z

+6H

+12H

+18H

WIND

310°/6

VIS

10+ SM

CEILING

OVC010

LAYERS

OVC010

T / Td

3 / 2

ALTIM

29.99"

// Interpretation

MVFR — ceiling 1,000 ft. Light winds at 310°/6 kt, visibility better than 10 statute miles, overcast at 1,000 ft. 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 KSPF 130615Z AUTO 31006KT 10SM OVC010 03/02 A2999 RMK AO2

KSPF · day 13 at 06:15 UTC · wind from 310° at 6 kt · visibility 10+ SM · overcast at 1,000 ft · temp 3°C / dewpoint 2°C · altimeter 29.99" Hg · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 310° @ 6 kt

4 USABLE · 2 AVOID · 2 CAUTION

WIND

310°6 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 4 usable

31★ HDG 310° H6 kt X0 kt — PRIMARY · 6,401'

26 HDG 260° H4 kt X5 kt RIGHT 4,003'

04 HDG 040° H0 kt X6 kt LEFT ⚠ HIGH XW · 100%

22 HDG 220° H0 kt X6 kt RIGHT ⚠ HIGH XW · 100%

TAILWIND ENDS · AVOID 2 ends

08 HDG 080° T4 kt X5 kt LEFT —

13 HDG 130° T6 kt X0 kt — —

Pattern altitude: 4,931 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 -4°C

3,300FT

-631 FT BELOW FIELD ELEV

// DA · LAST 24 HOURS loading…

FIELD ELEV3,931 FT OAT+3°C ISA DELTA-4°C PRESSURE ALT3,857 FT

// Performance equivalent Operating here right now feels like operating at K9V6 (Martin Municipal Airport, Martin, elev 3,293 ft) on a standard ISA day.

// Aircraft performance impact ENHANCED

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+33%

-23%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+23%

-15%

Light jetCJ4, Phenom 300, M2

+13%

-10%

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

// Reported layers (highest → lowest)

OVC010

Overcast · base 1,000 ft AGL · 8 oktas

// Computed

CEILING1,000 ft AGL HIGHEST LAYER1,000 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL5,446 ft VFR MARGIN-2,000 ft

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

13:07ZSUNRISE

18:42ZSOLAR NOON

00:18ZSUNSET

00:47ZCIVIL END

CURRENT06:28Z DAYLIGHT REMAINING0m VFR NIGHT BEGINS00:47Z (past) DAY LENGTH11h 10m

Waxing Crescent

ILLUMINATION4% MOONRISE14:39Z MOONSET01:49Z FULL MOON IN13 days

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

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