Weather report issued by The Marine Meteorological Center Split on 18.04.2021 at 12


Warning
In the North Adriatic local gusts of NE wind 35-45 knots. A risk of light isolated thunderstorms, mainly at night and during the morning and forenoon in the South and in a small part of the Central Adriatic. At night and in the morning a low risk of fog, mainly in the far north and along the Italian coast.
Synopsis
The Adriatic is influenced by a field of medium air pressure, between a ridge of high situated northwestwards and a low slowly filling up more eastwards.
Weather forecast for the Adriatic for the first 12 hours
In the North and in a part of the Central Adriatic NE wind 8-18 knots, locally in the open sea turning to NW wind. Elsewhere SW and SE 6-16, at night in places turning to NW wind and increasing up to 20 knots. The sea 2-3. Visibility 10-20 km, at night a low risk of being reduced to less than 1 km due to fog. Variably cloudy with scattered light rain.
Weather forecast for the next 12 hours
In the North Adriatic light to moderate NE wind, also reinforced locally at the foot of Velebit. Elsewhere light to moderate NW, locally in the open sea also reinforced. In the morning a low risk of fog, mainly in the far north and along the Italian coast. The sea smooth, locally in the North Adriatic also slight. Variably cloudy with scattered light rain or possible isolated rain showers with thunder, mainly in the South and in a small part of the Central Adriatic.
PMC - Split

Douglas scale
State of the sea Description Waves average height (m)
0 calm (glassy) 0
1 calm (rippled) 0 - 0.1
2 smooth 0.1 - 0.5
3 slight 0.5 - 1.2
4 moderate 1.25 - 2.5
5 rough 2.5 - 4
6 very rough 4 - 6
7 high 6 - 9
8 very high 9 - 14
9 phenomenal > 14

Beaufort scale
Wind speed Waves height
km/h m/s kt mph m ft
0 Bf calm < 1 0 - 0.2 < 1 < 1 - -
1 Bf light air 1 - 5 0.3 - 1.5 1 - 3 1-3 0.1 (0.1) 0.25 (0.25)
2 Bf light breeze 6 - 11 1.6 - 3.3 4 - 6 4 - 7 0.2 (0.3) 0.5 (1)
3 Bf gentle breeze 12 - 19 3.4 - 5.4 7 - 10 8 - 12 0.6 (1) 2 (3)
4 Bf moderate breeze 20 - 28 5.5 - 7.9 11 - 16 13 - 18 1 (1.5) 3.5 (5)
5 Bf fresh breeze 29 - 38 8.0 - 10.7 17 - 21 19 - 24 2 (2.5) 6 (8.5)
6 Bf strong breeze 39 - 49 10.8 - 13.8 22 - 27 25 - 31 3 (4) 9.5 (13)
7 Bf near gale 50 - 61 13.9 - 17.1 28 - 33 32 - 38 4 (5.5) 13.5 (19)
8 Bf gale 62 - 74 17.2 - 20.7 34 - 40 39 - 46 5.5 (7.5) 18 (25)
9 Bf strong gale 75 - 88 20.8 - 24.4 41 - 47 47 - 54 7 (10) 23 (32)
10 Bf storm 89 - 102 24.5 - 28.4 48 - 55 55 - 63 9 (12.5) 29 (41)
11 Bf violent storm 103 - 117 28.5 - 32.6 56 - 63 64 - 72 11.5 (16) 37 (52)
12 Bf hurricane >= 118 >= 32.7 >= 64 >= 73 14 (-) 45 (-)

Adriatic sub-basins