Weather report issued by The Marine Meteorological Center Split on 05.01.2021 at 06


Warning
FROM MIDDAY GUSTS OF SE and S WINDS 35-45 KNOTS, EASING IN THE NORTH AND IN A PART OF THE CENTRAL ADRIATIC IN THE SECOND PART OF THE NIGHT. TOWARD THE END OF THE DAY AND DURING THE NIGHT IN THE OPEN OF THE CENTRAL AND SOUTH ADRIATIC SEA LOCALLY UP TO 5. STILL A CHANCE OF FOG PATCHES IN THE FAR NORTH OF THE ADRIATIC AT FIRST. ISOLATED THUNDERSTORMS.
Synopsis
The Genoa low is extending a trough with frontal disturbance toward the Adriatic.
Weather forecast for the Adriatic for the first 12 hours
Initially calm or NE winds 4-12, then SE and S winds strengthening to 12-24, in the Central and South Adriatic in the afternoon up to 30 knots, easing a little in the North Adriatic during the night. Sea 2-3, increasing during the day to 3-4, in the Central and South Adriatic toward the end of the day and during the night to 4-5, mainly toward the open. Visibility 10-20, in the far north of the Adriatic at first locally reduced to around 4 km due to mist, possibly even to less than 1 km due to fog. Variably cloudy with scattered rain, isolated rain showers and thunder, mainly in the second part of the day.
Weather forecast for the next 12 hours
Mainly cloudy with rain, showers and thunder, in places even heavier. Moderate to strong, in the Central and South Adriatic up to near gale force SE and S winds. In the North, from the middle of the night in a part of the Central Adriatic, SE and S winds will ease to light to fresh and turn to S and SW. Sea slight and moderate, locally in the Central and South Adriatic up to rough, mainly toward the open, while calming to smooth and slight in the North 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