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// Station · 58m ago

LIRV

Viterbo Airport
CAT VFR
WIND 050° / 6 kt
VIS 6+ SM
CEILING CLR
T/Td 29°C / 14°C
ALTIM 30.15 inHg
ELEV 992 FT
42.4353°N / 12.0614°E
LOCATION · Viterbo, IT
N
WIND
050°6 kt
LIRV · 992 FT
© OSM · CartoDB

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

METRIC
NOW · 09Z
+6H
+12H
+18H
WIND
050°/6
 
 
 
VIS
6+ SM
 
 
 
CEILING
CLR
 
 
 
LAYERS
 
 
 
T / Td
29 / 14
 
 
 
ALTIM
30.15"
 
 
 

// Interpretation

VFR with light winds at 050°/6 kt. Visibility 6+ SM 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 LIRV 270955Z 05006KT CAVOK 29/14 Q1021

LIRV · day 27 at 09:55 UTC · wind from 050° at 6 kt · visibility 6+ SM · temp 29°C / dewpoint 14°C · altimeter 30.15" Hg

// Runway analysis · computed from current METAR wind

Wind 050° @ 6 kt
3 USABLE · 3 AVOID
N
WIND
050°6 kt
HEADWIND CAUTION · HIGH XW AVOID · TAILWIND
HEADWIND ENDS 3 usable
04C HDG 040° H6 kt X1 kt RIGHT PRIMARY · 4,265'
04L HDG 040° H6 kt X1 kt RIGHT 3,297'
04R HDG 040° H6 kt X1 kt RIGHT 1,936'
TAILWIND ENDS · AVOID 3 ends
22C HDG 220° T6 kt X1 kt LEFT
22R HDG 220° T6 kt X1 kt LEFT
22L HDG 220° T6 kt X1 kt LEFT
Pattern altitude: 1,992 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 +16°C

2,600FT
+1,608 FT ABOVE FIELD ELEV
// DA · LAST 24 HOURS ↗ +100 FT
2,900 2,050 1,200
24h AGO18h12h6hNOW
FIELD ELEV992 FT OAT+29°C ISA DELTA+16°C PRESSURE ALT762 FT
// Performance equivalent Your aircraft will perform as if it's at a field 2,600 ft high on a standard ISA day — that's +1,608 ft above LIRV's actual elevation.
// Aircraft performance impact MINOR
TAKEOFF ROLL CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+26%
-18%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+18%
-12%
Light jetCJ4, Phenom 300, M2
+10%
-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.

// Cloud layers · clear · no layers reported

FT 0 5k 10k 15k 20k 25k FRZ LVL · 15,638 FT LIRV ELEV · 992 FT
// Reported layers (highest → lowest)
CLR
No reported cloud layers — clear sky from surface to reporting ceiling.
// Computed
CEILING HIGHEST LAYER TOTAL COVERAGEclear FREEZING LEVEL15,638 ft VFR MARGINunlimited

// Sun & Moon · times in Z · bar = local day (UTC+1)

03:41ZSUNRISE
11:10ZSOLAR NOON
18:38ZSUNSET
19:12ZCIVIL END
CURRENT10:53Z DAYLIGHT REMAINING7h 45m VFR NIGHT BEGINS19:12Z (8h 18m) DAY LENGTH14h 57m
Waxing Gibbous
ILLUMINATION83% MOONRISE12:24Z MOONSET03:21Z FULL MOON IN4 days

// Nearest reporting stations · 5 shown · 60 NM radius

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

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