Weather report issued by The Marine Meteorological Center Split on 21.04.2020 at 12


Warning
LOCAL GUSTS OF NE and E WINDS 35-40, IN THE NORTH ADRIATIC UP TO 55, AND IN THE VELEBIT CHANNEL UP TO 70 KNOTS. IN THE NORTH ADRIATIC DURING THE NIGHT SEA POSSIBLY UP TO 5. A CHANCE OF ISOLATED THUNDERSTORMS IN THE SOUTH ADRIATIC.
Synopsis
The low over the western Mediterranean is extending a trough over the Adriatic, while the ridge of high pressure is extending from the north.
Weather forecast for the Adriatic for the first 12 hours
NE and E winds 10-22, in the North Adriatic strengthening to 16-32, in the Velebit Channel up to 40 knots. Sea 2-3, in the open 3-4, in the North Adriatic during the night possibly up to 5. Visibility 10-20 km. Mainly cloudy with scattered rain, in the north of the Adriatic clearing, and in the South Adriatic a risk of isolated rain showers and thunder, mainly in the extreme south of the Adriatic during the night.
Weather forecast for the next 12 hours
In the North Adriatic mostly clear, in the Central partial clearing, but still with a risk of rain, mainly in the open sea and on the islands, In the South Adriatic cloudy with scattered rain and with a risk of isolated rain showers and thunder, mainly in the extreme south during the night. In the North Adriatic moderate to near gale, in the Velebit Channel up to gale force NE and E winds will ease. In the rest of the Adriatic light to fresh E and and NE winds, turning in the open sea to SE, in the open of the South Adriatic possibly up to strong.
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