// Station · 16m ago

KDLN

Dillon Airport

CAT IFR

WIND 330° / 4 kt

VIS 2.0 SM

CEILING BKN at 4,500 ft

T/Td 10.6°C / 8.9°C

ALTIM 29.97 inHg

WX RA BR

ELEV 5,241 FT

45.2554°N / 112.5530°W

LOCATION · Dillon, US

WIND

330°4 kt

KDLN · 5,241 FT

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

METRIC

NOW · 22Z

+6H

+12H

+18H

WIND

330°/4

VIS

2.0 SM

CEILING

BKN045

LAYERS

FEW029 BKN045 OVC050

T / Td

11 / 9

ALTIM

29.97"

// Interpretation

IFR conditions — visibility 2.0 SM. Light winds at 330°/4 kt, visibility 2.0 SM, a few at 2,900 ft, broken at 4,500 ft, and overcast at 5,000 ft. Reported weather: RA BR. Would deteriorate to LIFR below 500 ft ceiling or 1 SM, or improve to MVFR above 1,000 ft and 3 SM.

Loading TAF forecast narrative…

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

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// Raw observation METAR string + decoded

SPECI KDLN 302215Z AUTO 33004KT 2SM RA BR FEW029 BKN045 OVC050 11/09 A2997 RMK AO2 P0006 T01060089

KDLN · day 30 at 22:15 UTC · wind from 330° at 4 kt · visibility 2.0 SM · a few clouds at 2,900 ft · broken layer at 4,500 ft · overcast at 5,000 ft · temp 11°C / dewpoint 9°C · altimeter 29.97" Hg · weather: RA BR · automated station w/ precipitation discriminator

// Runway analysis · computed from current METAR wind

Wind 330° @ 4 kt

ALL USABLE · WINDS CALM

WIND

330°4 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

ALL RUNWAYS · CALM WINDS 4 ends

17 HDG 170° —CALM —— 6,501'

35 HDG 350° —CALM —— 6,501'

04 HDG 040° —CALM —— 3,600'

22 HDG 220° —CALM —— 3,600'

Pattern altitude: 6,241 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

5,900FT

+659 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -2,300 FT

24h AGO18h12h6hNOW

FIELD ELEV5,241 FT OAT+11°C ISA DELTA+6°C PRESSURE ALT5,188 FT

// Performance equivalent Operating here right now feels like operating at KRED (Red Lodge Airport, Red Lodge, elev 5,763 ft) on a standard ISA day.

// Aircraft performance impact SIGNIFICANT

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+59%

-41%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+41%

-27%

Light jetCJ4, Phenom 300, M2

+24%

-18%

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

// Reported layers (highest → lowest)

OVC050

Overcast · base 5,000 ft AGL · 8 oktas

BKN045

Broken · base 4,500 ft AGL · ~5–7 oktas

FEW029

Few · base 2,900 ft AGL · ~1–2 oktas

// Computed

CEILING4,500 ft AGL HIGHEST LAYER5,000 ft TOTAL COVERAGE~100% (overcast) FREEZING LEVEL10,595 ft VFR MARGIN+1,500 ft

// Sun & Moon · times in Z · bar = local day (UTC-8)

11:48ZSUNRISE

19:29ZSOLAR NOON

03:10ZSUNSET

03:46ZCIVIL END

CURRENT22:31Z DAYLIGHT REMAINING4h 38m VFR NIGHT BEGINS03:46Z (5h 15m) DAY LENGTH15h 21m

Full Moon

ILLUMINATION100% MOONRISE23:21Z MOONSET14:42Z FULL MOON IN1 day

// Nearest reporting stations · 4 shown · 60 NM radius

KEKS

IFR → MVFR 06Z

Ennis Big Sky Airport · Ennis

WIND: 040° / 5 kt
VIS: 2.0 SM
CEILING: BKN026
DIST: 38 NM E
AGE: 21m ago

KBTM

MVFR → IFR 13Z

Bert Mooney Airport · Butte

WIND: 300° / 9 kt
VIS: 4.0 SM
CEILING: BKN045
DIST: 42 NM N
AGE: 38m ago

K3U3

VFR

Bowman Field · Anaconda

WIND: 350° / 9 kt
VIS: 6.0 SM
CEILING: BKN043
DIST: 55 NM N
AGE: 16m ago

KSMN

VFR

Lemhi County Airport · Salmon

WIND: 360° / 5 kt
VIS: 10+ SM
CEILING: OVC050
DIST: 57 NM W
AGE: 35m ago

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

AIRSPACE

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