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Weather Forecasts

Today
High
16°
Low
14°
35%
F4
Tomorrow
High
18°
Low
15°
55%
F5
Sat, 10 Oct
High
17°
Low
14°
20%
F5
Sun, 11 Oct
High
16°
Low
15°
20%
F3
Mon, 12 Oct
High
18°
Low
16°
35%
F4
Tue, 13 Oct
High
20°
Low
15°
55%
F4
Wed, 14 Oct
High
20°
Low
15°
0%
F2
Morning
Sunrise 06:19
Max
16°
35%
F4
Sunny periods and perhaps a few showers. Wind north to northwest moderate F4, occasionally fresh F5 at first.
UV 3
Afternoon
Sunset 17:39
Max
16°
25%
F4
Sunny periods, but the chance of a shower at first, becoming cloudier later. Wind northwest moderate F4, occasionally light F3.
UV 3
Night
Waning Crescent
Min
14°
65%
F5
Cloudy with patchy rain likely from midnight. Wind west to northwest light F3 to moderate F4, backing west to southwest fresh F5 to strong F6.

Shipping Forecast

General Situation
At 18:00UTC high, 1033mb 600 miles west of Spain, expected 1033mb, northeast of Azores by Friday. Atlantic low, expected 983mb, west of Iceland by same time, with associated fronts to affect the area.

18.5°C
Sea Temperature

Forecast from 00:00UTC Thursday to 00:00UTC Friday.
Wind
North 5 to 6, backing northwest 5 perhaps locally 6 by mid-morning, decreasing 4 by mid-afternoon, backing west to southwest 5 to 6 later.
Sea State
Rather rough to rough, decreasing moderate to rather rough by dawn, then slight to moderate by mid-afternoon.
Weather
Isolated showers, rain spreading into the northwest later.
Visibility
Good, locally moderate.
Outlook from 00:00UTC Friday to 00:00UTC Saturday.
Wind
West to southwest 5 to 6, locally 7 by late-morning, veering northwest 5, locally 6 around dusk.
Sea State
Slight to moderate, increasing rather rough to rough by late-morning.
Weather
Occasional rain, perhaps locally heavy with a risk of mist patches from mid-afternoon, all clearing later.
Visibility
Good, occasionally moderate, perhaps locally poor.

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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