Weather report issued by The Marine Meteorological Center Split on 21.02.2020 at 12


Warning
DURING THE NIGHT AND TOMORROW LOCAL GUSTS OF NE WINDS 35-40, IN THE SOUTH AND IN A PART OF THE CENTRAL ADRIATIC UP TO 50 KNOTS.
Synopsis
The weakened front is approaching the Adriatic from the northwest, while a ridge of high pressure will be intensifying again in the evening.
Weather forecast for the Adriatic for the first 12 hours
NW winds 4-14, in the Central and South Adriatic strengthening to 8-18 knots, further strengthening during the night and turning to NE, west and north of Istria to NE and E winds 10-20, in the South and in a part of the Central Adriatic to 14-28 knots. Sea increasing to 2-3, in the South and in a part of the Central Adriatic to 3-4. Visibility 20 km. Mostly clear.
Weather forecast for the next 12 hours
Moderate to fresh NE, west and north of Istria NE and E winds, in the South and in a part of the Central Adriatic moderate to strong NE winds. During the forenoon NE winds will ease gradually to light to moderate, firstly in the northern part of the Adriatic, but in the extreme south still remaining up to fresh, and turning west and north of Istria to light SE winds. Sea smooth or slight, in the South and in a part of the Central Adriatic slight and moderate. Mostly clear.
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