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The Islander Newspaper Ascension Island
  Issue No. 2165 Online Edition Thursday 20 June 2013 
Home | November 2011 Please tell us what you think of this article. Tell a friend Print Friendly

Ascension : Met Office - Weather Report
Submitted by The Islander (Met Office) 24.11.2011 (Article Archived on 08.12.2011)

A mostly cloudy week this week with a few showers, particularly over Green Mountain.

 

Statistics for the week ending Monday 21-Nov-11

 

Max (Celsius)

Min (Celsius)

Rainfall (mm)

AIRHEAD

28.1

20.7

0.6

TRAVELLERS

27.5

20.1

2.2

RESIDENCY

22.9

16.8

9.2

ST. HELENA

19.7

13.6

6.0

FALKLANDS

21.3

3.0

Trace

UK (Brize Norton)

14.1

4.5

0.8

Past week’s Weather

UK

High pressure dominated the weather at the start of the week bringing mostly settled conditions. A band of rain and low cloud affected much of the UK on Thursday and Friday, but cleared to leave a drier weekend.

Falklands

A fairly settled start to the week, with high pressure situated out to the northeast. A frontal system brought and rain and strong winds to the Falklands on Thursday, with strong winds continuing on Friday. It remained windy and wet into the weekend.

Ascension

A mostly cloudy week this week with a few showers, particularly over Green Mountain. The best weather coincided with the Dew Pond run on Sunday with plenty of sunshine and only few clouds.

St. Helena

A cloudy week for St Helena with large amounts of cloud and a few showers at times.

 

What is the difference between wind waves and swell?

Wind waves are generated on the surface of the ocean. They usually result from the wind blowing over a vast stretch of open water. When the wind no longer blows, the wind waves then become swell.  A swell consists of wind generated waves that are not affected by the local wind at that time. They have been generated elsewhere, or sometime ago.

Southerly swell from South Atlantic storms dominates the Ascension swell from April through to November and northerly swell from North Atlantic storms dominates between December and March. North Atlantic hurricanes can generate a very big swell, sometimes over 2 metres. This can be particularly hazardous as it affects the Pierhead and also English bay, as both are exposed to a northerly swell.

 

 
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