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// STALE Observation is 1h 1m old — METAR cadence is typically hourly. A fresh report may be on its way.

// Station · 1h 1m ago · STALE

KRAP

Rapid City Regional Airport
CAT VFR
WIND 120° / 3 kt
VIS 10+ SM
CEILING CLR
T/Td 15°C / 8.3°C
ALTIM 29.92 inHg
ELEV 3,204 FT
44.0453°N / 103.0570°W
LOCATION · Rapid City, US
N
WIND
120°3 kt
KRAP · 3,204 FT
© OSM · CartoDB

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

METRIC
NOW · 09Z
+6H
+12H
+18H
WIND
120°/3
 
 
 
VIS
10+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
15 / 8
 
 
 
ALTIM
29.92"
 
 
 

// Interpretation

VFR with light winds at 120°/3 kt. Visibility better than 10 statute miles and no reported cloud layers. 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 KRAP 270952Z AUTO 12003KT 10SM CLR 15/08 A2992 RMK AO2 SLP104 T01500083

KRAP · day 27 at 09:52 UTC · wind from 120° at 3 kt · visibility 10+ SM · temp 15°C / dewpoint 8°C · altimeter 29.92" Hg · automated station w/ precipitation discriminator · sea-level pressure 1010.4 mb

// Runway analysis · computed from current METAR wind

Wind 120° @ 3 kt
ALL USABLE · WINDS CALM
N
WIND
120°3 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
ALL RUNWAYS · CALM WINDS 4 ends
14 HDG 140° CALM 8,701'
32 HDG 320° CALM 8,701'
05 HDG 050° CALM 3,601'
23 HDG 230° CALM 3,601'
Pattern altitude: 4,204 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

4,000FT
+796 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +200 FT
6,500 4,950 3,400
24h AGO18h12h6hNOW
FIELD ELEV3,204 FT OAT+15°C ISA DELTA+6°C PRESSURE ALT3,201 FT
// Performance equivalent Operating here right now feels like operating at KBFF (Western Neb. Rgnl/William B. Heilig Airport, Scottsbluff, elev 3,967 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 · clear · no layers reported

FT 0 5k 10k 15k 20k 25k FRZ LVL · 10,780 FT KRAP ELEV · 3,204 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL10,780 ft VFR MARGINunlimited

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

11:16ZSUNRISE
18:50ZSOLAR NOON
02:24ZSUNSET
02:59ZCIVIL END
CURRENT10:53Z DAYLIGHT REMAINING15h 31m VFR NIGHT BEGINS02:59Z (16h 06m) DAY LENGTH15h 08m
Waxing Gibbous
ILLUMINATION83% MOONRISE19:59Z MOONSET11:07Z FULL MOON IN4 days

// Nearest reporting stations · 5 shown · 150 NM (sparse area)

// Area map · 140 NM radius · CartoDB Dark Matter + aeronautical overlay

© OpenStreetMap · CartoDB · OpenAIP
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