Weather report issued by The Marine Meteorological Center Split on 13.02.2021 at 12


Warning
LOCAL GUSTS OF NE WINDS STRENGTHENING TO 35-65, IN PLACES UP TO 75, AND IN THE VELEBIT CHANNEL UP TO 95 KNOTS. SEA LOCALLY 5. A RISK OF ISOLATED THUNDERSTORMS, MAINLY IN THE OPEN SEA OF THE SOUTH AND OF A PART OF THE CENTRAL ADRIATIC.
Synopsis
A ridge of high pressure from the north lies over the Adriatic, while a low will be gradually shifting from the Tyrrhenian towards the Ionian Sea.
Weather forecast for the Adriatic for the first 12 hours
NE winds strengthening to 18-34, in places up to 38, and in the Velebit Channel up to 48 knots. Sea increasing to 4-5. Visibility 10-20 km. Variably cloudy with scattered rain or snow, particularly in the South and in a part of the Central Adriatic, while thunder is possible mainly toward the open sea.
Weather forecast for the next 12 hours
Strong to gale force, in the Velebit Channel up to storm force, NE winds, expected to ease a little in the North Adriatic toward midday. Sea moderate and rough. Gradual clearing is expected, while snow is still likely in the South and in part of the Central Adriatic at first, and a chance of thunder toward the open sea.
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