Weather report issued by The Marine Meteorological Center Split on 28.12.2020 at 12


Warning
LOCAL GUSTS OF SE and S WINDS 40-70, EASING A LITTLE IN THE NORTH AND IN A PART OF THE CENTRAL ADRIATIC DURING THE NIGHT, IN THE REST OF THE ADRIATIC TOMORROW DURING THE FORENOON, AND TURNING TO S and SW WINDS 35-45 KNOTS. SEA 5, LOCALLY UP TO 6. ISOLATED THUNDERSTORMS.
Synopsis
The deep trough with frontal system is approaching the Adriatic and it will be shifting across it through the night.
Weather forecast for the Adriatic for the first 12 hours
SE and S winds 20-40, in places up to 45, easing a little in the North and in a part of the Central Adriatic through the night, and turning to SW winds 16-32 knots. Sea 4-5, locally up to 6. Visibility 10-20 km. Variably cloudy with scattered rain, isolated rain showers and thunder.
Weather forecast for the next 12 hours
In the North and in a part of the Central Adriatic moderate to strong, in places up to near gale force S and SW winds. In the South and in a part of the Central Adriatic strong to strong gale force SE and S winds, gradually easing and turning to strong, in the places to near gale force SW and S winds. Sea moderate and rough, locally up to very rough, gradually calming in the North, then in a part of the Central Adriatic to slight and moderate. 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