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Weather Forecasts

Today
High
24°
Low
16°
0%
F2
Tomorrow
High
23°
Low
16°
0%
F3
Tue, 18 Aug
High
22°
Low
16°
20%
F5
Wed, 19 Aug
High
21°
Low
17°
25%
F4
Thu, 20 Aug
High
21°
Low
17°
50%
F4
Fri, 21 Aug
High
21°
Low
17°
25%
F4
Sat, 22 Aug
High
21°
Low
17°
25%
F2
Morning
Sunrise 05:03
Max
24°
0%
F2
Mainly sunny, a little cloudier at times. Wind east or variable light F2, backing north to northeast light F3 later.
UV 5
Afternoon
Sunset 19:28
Max
24°
0%
F3
Long sunny periods, some high cloud at times. Wind north to northeast light F3.
UV 5
Night
Waxing Crescent
Min
16°
5%
F3
Mainly clear. Wind north to northwest light F3.

Shipping Forecast

General Situation
At 18:00UTC high, 1026mb, just northeast of the Azores, extended a ridge to the British Isles, with little change expected.

20.1°C
Sea Temperature

Forecast from 00:00UTC Sunday to 00:00UTC Monday.
Wind
North to northwest 3 to 4, becoming variable 1 to 3 overnight, then northwest to north 3 to 4 later.
Sea State
Smooth or slight.
Weather
Risk of mist or fog patches near the French coast Sunday morning. Some mist patches by midnight.
Visibility
Good or very good, perhaps locally poor or very poor later.
Outlook from 00:00UTC Monday to 00:00UTC Tuesday.
Wind
Northerly 3 to 4, decreasing 2 to 3 for a time Monday morning, becoming west to northwest 3 to 4 Monday afternoon occasionally 5 in the evening.
Sea State
Smooth or slight, perhaps locally moderate later.
Weather
Fair. Some mist patches at first.
Visibility
Good or very good locally poor at first.

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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