Weather report issued by The Marine Meteorological Center Split on 04.01.2021 at 12


Warning
DURING THE FORENOON GUSTS OF SE, AND MAINLY IN THE OPEN SEA OF S WINDS AS WELL, 35-40 KNOTS. A CHANCE OF FOG PATCHES IN THE FAR NORTH OF THE ADRIATIC DURING THE NIGHT AND IN THE MORNING. LIGHT ISOLATED THUNDERSTORMS.
Synopsis
The field of low pressure lies over the central Mediterranean and it is slowly filling up.
Weather forecast for the Adriatic for the first 12 hours
NW and SW, in places along the coast NE winds, 6-16 knots. Sea 2-3. Visibility 10-20, in the far north of the Adriatic during the night possibly around 4 km due to mist, or even less than 1 km due to fog. Variably cloudy with scattered rain, isolated rain showers with thunder.
Weather forecast for the next 12 hours
Light to moderate, only in the open sea of the South Adriatic briefly up to fresh NW and SW, during the forenoon SE, and in the open sea S winds, strengthening to moderate to strong. Sea smooth or slight, during the forenoon, mainly in the open sea, up to moderate. A chance of mist and fog patches in the far north of the Adriatic through the night and in the morning. Variably 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