— 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: 22:19:23 on 19/09/2026(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
NE
Gust
2.4 m/s
Low cloud
0%
—
Rain
0%
0.0 mm
Visibility
28 km
Temp.
21°
feels 24°
HourScoreWindGustCloudBaseRainVis.Temp.Conf.
SUN 20 · 08:001001.1 m/s NE2.4 m/s
L
0
M
0
H
79
—0%28 km21°●●●
SUN 20 · 09:001000.9 m/s NE2.3 m/s
L
0
M
0
H
76
—0%35 km23°●●●
SUN 20 · 10:001000.7 m/s E2.3 m/s
L
0
M
0
H
55
—0%38 km25°●●●
SUN 20 · 11:001001.0 m/s SO2.9 m/s
L
4
M
0
H
6
—0%39 km26°●●●
SUN 20 · 12:001002.3 m/s SO5.1 m/s
L
22
M
0
H
0
—0%40 km27°●●●
SUN 20 · 13:001003.1 m/s SO6.7 m/s
L
21
M
0
H
0
—0%39 km27°●●●
SUN 20 · 14:001003.5 m/s O7.5 m/s
L
14
M
0
H
0
—0%38 km27°●●●
SUN 20 · 15:001003.6 m/s O7.8 m/s
L
0
M
0
H
0
—3%38 km27°●●●
SUN 20 · 16:00854.0 m/s O8.1 m/s
L
0
M
0
H
0
—0%39 km27°●●●
SUN 20 · 17:00853.9 m/s O8.2 m/s
L
0
M
0
H
0
—0%40 km27°●●●
SUN 20 · 18:00853.4 m/s O8.1 m/s
L
0
M
0
H
0
—0%39 km26°●●●
MON 21 · 08:00751.0 m/s NE2.2 m/s
L
2
M
0
H
100
—0%19 km20°●●●
MON 21 · 09:00750.6 m/s NE2.0 m/s
L
0
M
0
H
100
—0%29 km22°●●●
MON 21 · 10:00750.5 m/s NE1.7 m/s
L
0
M
0
H
100
—0%38 km24°●●●
MON 21 · 11:001000.4 m/s SO1.6 m/s
L
0
M
0
H
23
—0%40 km26°●●●
MON 21 · 12:001002.1 m/s O4.8 m/s
L
0
M
0
H
1
—0%41 km27°●●●
MON 21 · 13:001003.3 m/s O7.1 m/s
L
0
M
0
H
0
—0%40 km28°●●●
MON 21 · 14:00854.3 m/s O9.1 m/s
L
0
M
0
H
82
—0%41 km28°●●●
MON 21 · 15:00854.8 m/s O9.9 m/s
L
0
M
0
H
0
—0%40 km28°●●●
MON 21 · 16:00655.0 m/s O10.4 m/s
L
2
M
0
H
17
—0%38 km27°●●●
MON 21 · 17:00404.8 m/s O10.4 m/s
L
4
M
0
H
100
—0%39 km27°●●●
MON 21 · 18:00854.6 m/s NO9.9 m/s
L
1
M
0
H
84
—0%37 km26°●●●

Best jumpable windows · 7 days

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

SUN 20
08:00 → 10:00
Avg score: 100/100
SUN 20
10:00 → 12:00
Avg score: 100/100
SUN 20
12:00 → 14:00
Avg score: 100/100
SUN 20
14:00 → 16:00
Avg score: 100/100
MON 21
11:00 → 13:00
Avg score: 100/100
Show daily summary · 7 days
SUN 20
96
27° / 21°
W: 4 m/sG: 8 m/sR: 0.0 mm (3%)
Window: 08:00
MON 21
80
28° / 20°
W: 5 m/sG: 10 m/sR: 0.0 mm (0%)
Window: 11:00
TUE 22
99
28° / 21°
W: 4 m/sG: 8 m/sR: 0.0 mm (0%)
Window: 08:00
WED 23
73
25° / 21°
W: 4 m/sG: 9 m/sR: 0.0 mm (0%)
Window: 12:00
THU 24
14
26° / 19°
W: 5 m/sG: 10 m/sR: 7.8 mm (51%)
FRI 25
25
26° / 17°
W: 7 m/sG: 12 m/sR: 0.0 mm (53%)
SAT 26
100
25° / 17°
W: 4 m/sG: 8 m/sR: 0.0 mm (10%)
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: 22:19:23 on 19/09/2026

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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