— Tools · Dropzone weather · Lazio

WEATHER NETTUNO

Crazy Fly · tandem exit altitude 4000 m. Wind, gusts, cloud and visibility hour-by-hour with 4-model ensemble confidence, plus 7-day daily outlook. Designed to decide whether driving to the dropzone is worth it.

Data updated at: 06:52:07 on 21/06/2026(updated just now)
Open-Meteo · best-match + 4-model ensemble confidence · recomputed every 30 min
Now · 08:00
100/100
Jumpable conditions
Wind
1.1 m/s
E
Gust
2.4 m/s
Low cloud
0%
—
Rain
0%
0.0 mm
Visibility
40 km
Temp.
25°
feels 27°
HourScoreWindGustCloudBaseRainVis.Temp.Conf.
SUN 21 · 08:001001.1 m/s E2.4 m/s
L
0
M
0
H
1
—0%40 km25°●●●
SUN 21 · 09:001001.2 m/s SE3.0 m/s
L
0
M
0
H
0
—0%40 km27°●●●
SUN 21 · 10:001001.6 m/s SE4.1 m/s
L
0
M
0
H
0
—0%41 km28°●●●
SUN 21 · 11:001001.9 m/s S4.7 m/s
L
0
M
0
H
0
—0%41 km30°●●●
SUN 21 · 12:001002.5 m/s S5.7 m/s
L
0
M
0
H
0
—0%42 km31°●●●
SUN 21 · 13:001003.0 m/s SO6.6 m/s
L
0
M
0
H
0
—0%42 km31°●●●
SUN 21 · 14:001003.3 m/s SO7.3 m/s
L
0
M
0
H
0
—0%43 km31°●●●
SUN 21 · 15:001003.4 m/s SO7.4 m/s
L
0
M
0
H
0
—0%40 km30°●●●
SUN 21 · 16:001003.5 m/s SO7.6 m/s
L
0
M
0
H
0
—0%38 km30°●●●
SUN 21 · 17:001003.2 m/s O7.5 m/s
L
0
M
0
H
0
—0%39 km30°●●●
SUN 21 · 18:001002.6 m/s O6.5 m/s
L
0
M
0
H
0
—0%42 km29°●●●
MON 22 · 08:001001.4 m/s E3.4 m/s
L
0
M
0
H
0
—0%35 km25°●●●
MON 22 · 09:001002.3 m/s E4.8 m/s
L
0
M
0
H
0
—0%39 km27°●●●
MON 22 · 10:001002.3 m/s SE5.3 m/s
L
0
M
0
H
0
—0%40 km29°●●●
MON 22 · 11:001003.0 m/s SE6.5 m/s
L
0
M
0
H
0
—0%41 km30°●●●
MON 22 · 12:001003.6 m/s S7.6 m/s
L
0
M
0
H
0
—0%41 km30°●●●
MON 22 · 13:00854.0 m/s S8.6 m/s
L
0
M
0
H
0
—0%41 km30°●●●
MON 22 · 14:00854.1 m/s S8.9 m/s
L
0
M
0
H
0
—0%42 km30°●●●
MON 22 · 15:00853.7 m/s S8.9 m/s
L
0
M
0
H
0
—0%42 km30°●●●
MON 22 · 16:0002.6 m/s SO8.1 m/s
L
0
M
0
H
0
—0%38 km30°●●●
MON 22 · 17:0002.1 m/s SO5.8 m/s
L
0
M
0
H
0
—0%40 km30°●●●
MON 22 · 18:0001.8 m/s SO4.6 m/s
L
0
M
0
H
0
—0%41 km30°●●●

Best jumpable windows · 7 days

2-hour windows with average score ≥ 60, ordered chronologically.

SUN 21
08:00 → 10:00
Avg score: 100/100
SUN 21
10:00 → 12:00
Avg score: 100/100
SUN 21
12:00 → 14:00
Avg score: 100/100
SUN 21
14:00 → 16:00
Avg score: 100/100
SUN 21
16:00 → 18:00
Avg score: 100/100
Show daily summary · 7 days
SUN 21
100
31° / 21°
W: 3 m/sG: 8 m/sR: 0.0 mm (0%)
Window: 08:00
MON 22
69
30° / 22°
W: 4 m/sG: 9 m/sR: 0.0 mm (0%)
Window: 08:00
TUE 23
41
32° / 24°
W: 4 m/sG: 9 m/sR: 0.0 mm (0%)
Window: 08:00
WED 24
27
31° / 23°
W: 4 m/sG: 8 m/sR: 0.0 mm (0%)
Window: 08:00
THU 25
69
31° / 24°
W: 4 m/sG: 10 m/sR: 0.0 mm (0%)
Window: 08:00
FRI 26
94
31° / 23°
W: 5 m/sG: 9 m/sR: 0.0 mm (0%)
Window: 08:00
SAT 27
100
34° / 22°
W: 5 m/sG: 8 m/sR: 0.0 mm (0%)
Window: 08:00
⚠️ The forecast never replaces the jumpmaster's briefing. ICON-EU + AROME + ECMWF + GFS are high-resolution models, but on complex orography (Alps, Adriatic coast) they may miss reality by a factor. Always verify with the dropzone before driving over.
Legend · jumpability score
70+
Jumpable 70–100
Comfortable operating conditions, including for students and tandems.
40+
Borderline 40–69
On the edge — tight wind or cloud. Often no students; sport jumpers with caution.
0+
No-go 0–39
Extreme wind, gusts, storms, cloud below exit, or visibility below threshold.
The score combines surface wind, gusts, upper-level wind, cloud vs DZ exit altitude, CAPE (storms), rain in the next 2 hours and visibility. Operational thresholds, not meteorological. How the models work ↗
Data sources · weather
Data updated at: 06:52:07 on 21/06/2026

Forecasts are recomputed every 30 minutes. The Quota 4000 cron job pre-warms the cache every 3 hours. ICON-EU and AROME refresh every 6h, ECMWF every 12h, GFS every 6h.

Forecast from Open-Meteo (free aggregator of numerical weather prediction models). Models combined: ICON-EU (DWD), ECMWF IFS, AROME France HD (Météo-France), GFS (NOAA). Dropzone coordinates from Quota 4000 database, ENAC-certified schools. How the models work ↗

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