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securite:
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weather bulletin for coastal waters up to 50 nautical miles seaward.
Issued at 13:00 UTC by the South African Weather Service on the
09th may 2008.
Forecast valid from 092200 to 102200 UTC.
Wind in knots, wave heights in metres. No sea state given if
waves less than 2m.
Note the wind speeds quoted here are the expected average speeds.
Individual gusts may exceed these values by a factor of up to 1.5.
Wave heights are significant wave heights which may be accompanied
by individual waves 1.5 to 2.0 times higher.
These estimates of winds and waves do not take into account the
enhancing effects of the Agulhas Current off the South African
East Coast.
Note: wx observations.
======================
Could all vessels experiencing unexpected, severe wx/sea state
please make every effort to report this to saws via cape town
radio.
Advisory:
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nil.
Gale force warning(s):
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1. Orange River to cape agulhas: NW 25 to 35 between Cape Point
and Cape Agulhas.
Warning of heavy seas:
======================
very rough seas with wave-height in excess of 5m are expected
between Cape Point and Cape Agulhas, spreading to Algoa Bay by
Saturday evening.
Abnormal wave conditions:
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nil.
Area forecast:
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Cunene River to Walvis Bay:
wind : S to se 10 to 20.
Vis : good.
Walvis Bay to the Orange River:
wind : S to SW 10 to 15 but NW 10 to 15 in the south.
Vis : poor in fog patches.
Sea state: 2 to 2.5m, SW swell.
Orange River to cape agulhas:
wind : N to NW 15 to 25 but NW 25 to 35 between Cape Point and
Cape Agulhas.
Vis : good but poor in rain and showers in the south.
Sea state: 2 to 3m but 4.5 to 5.5m between Cape Point and Cape
Agulhas with W to SW swell.
Cape Agulhas to east london:
wind : N to NW 10 to 15 east of Algoa Bay where it will become
W to SW 10 to 15 by Saturday afternoon, otherwise W to NW
15 to 25 reaching 30 to 35 in the Cape Agulhas area.
Vis : good but poor in rain and showers in the extreme west.
Sea state: 2.5 to 3.5m, reaching 4.5 to 5.5m in the Cape Agulhas
area, spreading to Algoa Bay by Saturday evening with
SW swell.
East London to Maputo:
wind : N to NE 15 to 25, becoming SW 10 to 15 in the extreme
south by Saturday afternoon, spreading to durban in the
evening.
Vis : good.
Sea state: 2 to 2.5m, with SSW swell.
Mozambique channel:
wind : S to se 05 to 10, becoming NW to NE 10 to 15 in the
south by Saturday morning.
Vis : good.
Sea state: 2 to 2.5m, mainly SSW swell.
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