Weather report issued by The Marine Meteorological Center Split on 18.01.2021 at 06


Warning
LOCAL GUSTS OF NE WINDS 35-40 KNOTS, EASING DURING THE FORENOON, WHILE GUSTS OF NW WINDS 35-40 KNOTS ARE EXPECTED IN THE OPEN OF THE SOUTH AND OF A PART OF THE CENTRAL ADRIATIC IN THE AFTERNOON. FOG PATCHES POSSIBLE ALONG THE WEST COAST OF THE NORTH ADRIATIC OVERNIGHT. IN THE OPEN SEA A RISK OF LIGHT ISOLATED THUNDERSTORMS.
Synopsis
The ridge of high pressure is intensifying over the Adriatic from the west, while the low is shifting from the Ionian Sea eastwards.
Weather forecast for the Adriatic for the first 12 hours
NE winds 8-18, in places at first up to 28, easing during the forenoon, firstly in the northern part and turning toward the open sea to NW winds 8-18, in the Central and South Adriatic up to 24 knots. Sea in the North and in a part of the Central Adriatic calming to 2-3, elsewhere to 3-4. Visibility 10-20 km. Variably cloudy with a chance of rain and showers with thunder, in places of the South Adriatic of light snow.
Weather forecast for the next 12 hours
Moderate, in the South and in a part of the Central Adriatic up to strong NW winds, easing firstly in the northern part of the Adriatic, while in places along the coast still light to moderate NE. Sea gradually calming to smooth and slight. Variably cloudy with a chance of rain and showers with thunder, mainly in the open sea of the South and Central Adriatic.
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