securite: ========= weather bulletin for coastal waters up to 50 nautical miles seaward. Issued by the South African Weather Service on the 21st April 2015 at 13:00 UTC.
Forecast valid from 212200 to 222200 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: --------- 1. Poor visibility in fog patches is expected in places between Cunene River and port nolloth in the morning. 2. Moderate visibility in showers is expected between durban and Maputo.
Watches: -------- nil.
Advisories: ----------- nil.
Abnormal wave conditions: ========================= nil.
Cunene River to Walvis Bay: wind : S to se 10 to 20, reaching 25 in the north in the second period. Vis : poor in fog patches in the morning, otherwise good. Sea state: 2.0 to 2.5m, S to SW swell.
Walvis Bay to Orange River: wind : S to se 10 to 20, reaching 25. Vis : poor in fog patches in the morning, otherwise good. Sea state: 2.5 to 3.0m, S to SW swell.
Orange River to cape agulhas: wind : S to se 10 to 20, reaching 25 south of Table Bay. Vis : good but poor with fog patches north of port nolloth in the morning. Sea state: 2.5 to 3.0m, SW swell.
Cape Agulhas to east london: wind : NE to E 10 to 20 becoming SW to S 10 to 20 from the west in the first period spreading to east London by midday. Vis : good. Sea state: 2.5 to 3.0m, SW swell.
East London to Maputo: wind : NE 10 to 20 towards mid period, reaching 25, becoming SW 10 to 20 from the south in the second period. Vis : good but moderate in showers in the north in the first period.
Mozambique channel: wind : S to se 15 to 25. Vis : good becoming moderate in showers and thundershowers in the north at times.