Weather report issued by The Marine Meteorological Center Split on 30.12.2020 at 12


Warning
IN THE SOUTH AND IN A PART OF THE CENTRAL ADRIATIC LOCAL GUSTS OF SW and S WINDS 35-40, IN THE FAR SOUTH UP TO 45 KNOTS, GRADUALLY EASING IN THE AFTERNOON. SEA IN THE FAR SOUTH OF THE ADRIATIC POSSIBLY UP TO 5 AT FIRST. IN THE OPEN SEA TOMORROW AROUND MIDDAY A RISK OF BRIEF GUSTS OF NW WINDS AROUND 35 KNOTS. A CHANCE OF LIGHT ISOLATED THUNDERSTORMS.
Synopsis
The broad trough and the upper-level southwestern stream are influencing the weather over the Adriatic.
Weather forecast for the Adriatic for the first 12 hours
In the South and in a part of the Central Adriatic SW winds 12-24, easing in the afternoon to 8-18 knots. In the North and in a part of the Central Adriatic SW winds, easing and turning to NW 4-12 knots. Sea 3-4, in the North and in a part of the Central Adriatic 2-3. Visibility 10-20 km. Variably cloudy with scattered rain, isolated rain showers and thunder, mainly in the Central and South Adriatic.
Weather forecast for the next 12 hours
In the South and in a part of the Central Adriatic light to moderate, in places at first up to fresh SW winds, turning during the night and in the morning to moderate to fresh, in the open sea briefly up to strong NW. In the North and in a part of the Central Adriatic NW winds strengthening to moderate to fresh, in the open sea briefly up to strong, in places along the coast to light to moderate NE. Sea smooth or slight, toward the open slight and moderate. Fair or mainly cloudy with scattered rain, isolated rain showers and thunder.
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