securite: ========= weather bulletin for coastal waters up to 50 nautical miles seaward. Issued by the South African Weather Service on the 18th December 2013 at 13:00 UTC.
Forecast valid from 182200 to 192200 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.
Alerts: ------- warnings: --------- nil.
Watches: --------- 1. Poor visibility in fog patches between Cunene River and port nolloth overnight into tomorrow morning. 2. Moderate visibility in showers and rain between Port Edwards and Maputo.
Advisories: ----------- nil.
Abnormal wave conditions: ========================= nil.
Cunene River to Walvis Bay: wind : S to se 10 to 20, but SW 05 to 15 at times. Vis : poor in fog patches overnight into tomorrow morning. Sea state: 2.0m in the south first period, with SW swell.
Walvis Bay to Orange River: wind : S to SW 10 to 20. Vis : poor in fog patches overnight into tomorrow morning. Sea state: 2 to 2.5m, with SW swell.
Orange River to cape agulhas: wind : S to SW 15 to 20, but se 20 to 30 south of langebaan. Vis : good, but poor in fog patches north of port nolloth overnight into tomorrow morning. Sea state: 2.5 to 3.0m, with SW swell.
Cape Agulhas to east london: wind : E to NE 10 to 20, but se 10 to 20 west of Algoa Bay by mid day. Vis : good. Sea state: 2.0 to 2.5m, mainly SW swell.
East London to Maputo: wind : se 10 to 20 in the north at first, otherwise E to NE 15 to 25. Vis : moderate in showers between Port Edwards and Maputo. Sea state: 2.0m, mainly S swell.
Mozambique channel: wind : NE to E 10 to 15 in the north, otherwise se 10 to 20 but N to SW 05 to 10 in the North-East times. Vis : moderate in showers and rain in places.
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NOT FOR NAVIGATION. DO NOT RELY ON THIS DATA FOR DECISIONS THAT CAN RESULT IN HARM TO ANYONE OR ANYTHING.