// Station · 17m ago

K79S

Fort Benton Airport

CAT VFR

WIND 300° / 12 kt

VIS 7.0 SM

CEILING BKN at 8,500 ft

T/Td 18.5°C / 13.5°C

ALTIM 29.87 inHg

WX -RA

ELEV 2,869 FT

47.8451°N / 110.6360°W

LOCATION · Fort Benton, US

WIND

300°12 kt

K79S · 2,869 FT

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

METRIC

NOW · 22Z

+6H

+12H

+18H

WIND

300°/12

VIS

7.0 SM

CEILING

BKN085

LAYERS

FEW028 BKN085

T / Td

19 / 14

ALTIM

29.87"

// Interpretation

VFR — ceiling 8,500 ft. Moderate winds at 300°/12 kt, visibility 7.0 SM, a few at 2,800 ft, and broken at 8,500 ft. Reported weather: -RA. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

Loading TAF forecast narrative…

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

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// Raw observation METAR string + decoded

METAR K79S 302215Z AUTO 30012KT 7SM -RA FEW028 BKN085 18/13 A2987 RMK AO2 LTG DSNT E AND S RAB2209 P0000 T01850135 $

K79S · day 30 at 22:15 UTC · wind from 300° at 12 kt · visibility 7.0 SM · a few clouds at 2,800 ft · broken layer at 8,500 ft · temp 19°C / dewpoint 14°C · altimeter 29.87" Hg · weather: -RA · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 300° @ 12 kt

2 USABLE · 2 AVOID · 1 CAUTION

WIND

300°12 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 2 usable

32★ HDG 320° H11 kt X4 kt LEFT PRIMARY · 1,700'

23 HDG 230° H4 kt X11 kt RIGHT ⚠ HIGH XW · 92%

TAILWIND ENDS · AVOID 2 ends

05 HDG 050° T4 kt X11 kt LEFT —

14 HDG 140° T11 kt X4 kt RIGHT —

Pattern altitude: 3,869 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

4,000FT

+1,131 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -1,600 FT

24h AGO18h12h6hNOW

FIELD ELEV2,869 FT OAT+19°C ISA DELTA+9°C PRESSURE ALT2,916 FT

// Performance equivalent Operating here right now feels like operating at KCII (Choteau Airport, Choteau, elev 3,947 ft) on a standard ISA day.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+40%

-28%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+28%

-18%

Light jetCJ4, Phenom 300, M2

+16%

-12%

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 · 2 reported · highest to lowest

// Reported layers (highest → lowest)

BKN085

Broken · base 8,500 ft AGL · ~5–7 oktas

FEW028

Few · base 2,800 ft AGL · ~1–2 oktas

// Computed

CEILING8,500 ft AGL HIGHEST LAYER8,500 ft TOTAL COVERAGE~83% (mostly covered) FREEZING LEVEL12,212 ft VFR MARGIN+5,500 ft

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

11:30ZSUNRISE

19:21ZSOLAR NOON

03:12ZSUNSET

03:51ZCIVIL END

CURRENT22:32Z DAYLIGHT REMAINING4h 39m VFR NIGHT BEGINS03:51Z (5h 19m) DAY LENGTH15h 41m

Full Moon

ILLUMINATION100% MOONRISE23:03Z MOONSET14:45Z FULL MOON IN1 day

// Nearest reporting stations · 2 shown · 100 NM (sparse area)

KCTB

—

Cut Bank International Airport · Cut Bank

WIND: CALM
VIS: —
CEILING: CLR
DIST: 83 NM NW
AGE: 36m ago

KHLN

MVFR

Helena Regional Airport · Helena

WIND: 290° / 10 kt
VIS: 5.0 SM
CEILING: OVC060
DIST: 92 NM SW
AGE: 39m ago

// Area map · 100 NM radius · CartoDB Dark Matter + aeronautical overlay

AIRSPACE

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