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Weather Forecasts

Today
High
16°
Low
7°
15%
F3
Tomorrow
High
15°
Low
9°
0%
F3
Fri, 10 Apr
High
15°
Low
9°
0%
F3
Sat, 11 Apr
High
13°
Low
7°
35%
F4
Sun, 12 Apr
High
13°
Low
7°
20%
F4
Mon, 13 Apr
High
14°
Low
9°
25%
F4
Tue, 14 Apr
High
14°
Low
7°
60%
F3
Morning
Sunrise 05:34
Max
16°
15%
F3
Some hazy sunshine, otherwise cloudy with mist or fog patches likely for a time. Wind variable light F1 to 2, becoming west to northwest light F3 to moderate F4.
UV 5
Afternoon
Sunset 18:52
Max
16°
15%
F4
Perhaps cloudier with some mist or fog patches at first, otherwise hazy sunshine. Wind west to northwest moderate F4, occasionally fresh F5.
UV 5
Night
Last Quarter
Min
7°
10%
F3
Mainly clear. Wind northwest moderate F4 to fresh F5, veering northeasterly light F2 to 3 later.

Shipping Forecast

General Situation
At 18:00UTC Azores high extended a ridge over Britain, expected to decline a little on Thursday, then build again on Friday. New low expected expected 1013mb mid-Atlantic by midday Thursday, deepening to 968mb over Rockall by midday Friday.

11.7°C
Sea Temperature

Forecast from 00:00UTC Thursday to 00:00UTC Friday.
Wind
West to northwest 2 to 3, locally variable 1 to 2 at first, increasing 4 to 5 by midday, perhaps locally 6 late afternoon and early evening, veering north to northeast by midnight.
Sea State
Smooth locally slight, with a low swell, increasing slight to moderate by late afternoon.
Weather
Mist and fog banks spreading in from the west, then clearing eastward early afternoon.
Visibility
Moderate or good, locally poor or very poor until early afternoon, becoming very good later.
Outlook from 00:00UTC Friday to 00:00UTC Saturday.
Wind
Northeast 3 to 4, locally 5 at first, veering east to southeast by midday, locally 5 in the afternoon and early evening, veering south to southwest towards midnight.
Sea State
Smooth to slight, with a low swell.
Weather
Fair or fine, perhaps occasionally cloudy.
Visibility
Very good.

Understanding the Forecast

The wind speed is given in the Beaufort Scale on an 8 point compass with a variability of +-45°. Terms commonly used in association with the wind and other parts of the forecast include:

Veering - a change of wind in the clockwise sense (up to 180°)
Backing – a change of wind in the anticlockwise sense (up to 180°)
At first – within the first 12 hours
Later – within the latter 12 hours
Occasional/occasionally – lasts less than half the time (location or time specific)
At times – non-persistent (lasts more than half the forecast period)
For a time – a transient state

Waves or sea state is the forecast of the mean of the largest 7% of combined wind and swell waves. Wind waves are locally produced waves; swell waves are produced by distant strong winds. Sea state descriptions equate to the following wave heights:

Description

Height

Smooth

< 0.5m

Slight

0.5 - 1.25m

Moderate

1.25 - 2.5m

Rough

2.5 - 4.0m

Very Rough

4.0 - 6.0m

High

6.0 - 9.0m

Very High

9.0 - 14.0m

Phenomenal

> 14m

Visibility measurements equate to the following distances in nautical miles and kilometers:

Description

Distance N.Mi

Distance Km

Good

> 5 n.mi

> 10 km

Moderate

2 - 5 n.mi

3.7 - 9 km

Poor

0.6 - 2 n.mi

1.0 - 3.7 km

Very Poor

< 0.6 n.mi

< 1000 m

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