Weather report issued by The Marine Meteorological Center Split on 12.12.2020 at 12


Warning
A chance of light isolated thunderstorms, mainly in the South and Central Adriatic. At night and tomorrow in the North and Central Adriatic local gusts of NE wind whereas in the open sea also of NW wind 30-40, in the Velebit Channel up to 50 knots.
Synopsis
A shallow low is slowly filling up across the Adriatic whereas a ridge of high will be intensifying from the west.
Weather forecast for the Adriatic for the first 12 hours
NE, locally in the open sea NW winds, still initially in the South and in a part of the Central Adriatic SE and E winds 6-16 knots. At night in the North Adriatic NE wind increasing to 10-20, in the Velebit Channel up to 26 knots whereas in the open sea of the North and Central Adriatic NW wind increasing to 12-26 knots. Sea 2-3, at night 4 locally in the North Adriatic. Visibility 10-20 km. Mostly cloudy with scattered rain, isolated rain showers and thunder, mainly in the South and in a part of the Central Adriatic.
Weather forecast for the next 12 hours
Scattered rain, isolated rain showers and thunder, mainly in the South and in a part of the Central Adriatic, then gradual ceasing of precipitation followed by clearing up, first in the north of the Adriatic. Light to reinforced NE wind, also of near gale force in the Velebit Channel whereas moderate to strong NW wind in the open sea. Sea slight and moderate.
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