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Bordeaux Harbour
Bordeaux Harbour • Picture by Peter Frankland
Today
High
10°
Low
8°
100%
F7
Tomorrow
High
10°
Low
7°
70%
F4
Thu, 22 Jan
High
10°
Low
7°
70%
F4
Fri, 23 Jan
High
9°
Low
5°
55%
F6
Sat, 24 Jan
High
8°
Low
5°
45%
F4
Sun, 25 Jan
High
8°
Low
5°
45%
F4
Mon, 26 Jan
High
8°
Low
5°
25%
F4
Morning
Sunrise 07:57
Max
10°
100%
F7
Cloudy with rain, heavy at times, especially-mid morning. Wind south to southeast strong F6 to 7 with gusts to 55mph.
UV 1
Afternoon
Sunset 16:48
Max
10°
70%
F6
Rather cloudy with occasional rain, perhaps heavy at times. Wind southeast strong F6 to 7 with gusts to 45mph.
UV 1
Night
Waxing Crescent
Min
8°
65%
F5
Rather cloudy with showers likely. Wind south to southeast fresh F5 to strong F6, decreasing moderate F4 to fresh F5.

Shipping Forecast

General Situation
At 18:00UTC low, 981mb, just west of Ireland, expected to move northwest to be 978mb, 200 miles northwest of Ireland by midday Wednesday. Low, 977mb, 400 miles west of Ireland, expected just southwest of Ireland by the same time. Associated fronts affecting the area at times.

N/A
Sea Temperature

Forecast from 00:00UTC Wednesday to 00:00UTC Thursday.
Wind
South to southwest 4 to 6, backing south to southeast after midnight, increasing 6 to gale 8 with gusts to 50kt towards dawn, decreasing 5 to 6 by evening.
Sea State
Moderate in the south of the area, rather rough to rough in the north, temporally decreasing overnight.
Weather
Isolated showers. Further rain at times from early morning, turning to showers Wednesday evening.
Visibility
Good, occasionally moderate, locally poor.
Outlook from 00:00UTC Thursday to 00:00UTC Friday.
Wind
South to southeast 4 to 6, veering southwest to west in the morning, backing southeast 6 Friday evening.
Sea State
Moderate in the south of the area, rather rough in the north with a low swell.
Weather
Occasional showers.
Visibility
Moderate to good, occasionally 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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