Weather report issued by The Marine Meteorological Center Split on 09.01.2021 at 12


Warning
In the North and in a part of the Central Adriatic gusts of NE wind increasing to 35-50, in the Velebit Channel up to 60 knots. Elsewhere only in some places along the coast possible gusts of NE wind 35-40 knots. Tomorrow gusts of SW wind 35-40 knots in the extreme south. Tomorrow forenoon the sea 5 locally in the north of the Adriatic. A chance of isolated thunderstorms, mostly tomorrow in the south of the Adriatic.
Synopsis
The weather across the Adriatic is under the influence of the Mediterranean low with a frontal system approaching from the southwest and a ridge of high from the north.
Weather forecast for the Adriatic for the first 12 hours
In the North and in a part of the Central Adriatic NE wind increasing to 12-26, in the Velebit Channel up to 30 knots. Elsewhere NE, in the open sea also NW winds 5-15, only in some places up to 20 knots. Sea 2-3, only in some places 4, mostly in the North Adriatic. Visibility 10-20 km. Mostly cloudy whereas from the middle of the day there will be scattered rain in the South and in a part of the Central Adriatic.
Weather forecast for the next 12 hours
Light to reinforced NE wind, strong locally in the North and in a part of the Central Adriatic and of near gale force in the Velebit Channel. Moderate to strong SW wind in the extreme south. Sea slight to moderate whereas rough locally in northern part. Mostly cloudy with scattered rain and mostly in the far south with isolated rain showers as well.
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