17 January 2022 Impact Based Weather Warnings for Western Cape and Namaqua: Yellow level 2: Damaging Waves
Impact Based Weather Warnings for Western Cape and Namaqua: Yellow level 2: Damaging Waves
17 January 2022
| Hazard | Alert Level | Affected Municipalities | Valid From (SAST) | Valid To(SAST) |
| Damaging Waves | Yellow(L2) (High likelihood of Minor Impacts) |
Bergrivier, Bitou, Cape Agulhas, Cape Agulhas, Cederberg, City of Cape town, George, Hessequa, Kamiesberg, Knysna, Matzikama, Mossel Bay, Nama Khoi, Overstrand, Richtersveld, Saldanha Bay, Swartland and Table Bay | 18/01/22 15h00 | 20/01/22 00h00 |
Discussion: Strong to gale force SW’ly winds (50-70km/h) are expected from Tuesday afternoon between Cape Point and Plettenberg Bay. This will cause rough, choppy seas with quick successive steep waves. From Wednesday, winds drop down, but wave heights increase to 4-6m along the entire coastline (Alexander Bay to Plettenberg Bay) from the morning. Wave heights may reach 7m along the southwest coast on Wednesday. Periods of 16s is expected on Wednesday and Thursday which will result in high energy waves. Springtide this week will also result in waves reaching further up the beach.
Impact: Difficulty in navigation for small vessels and personal watercraft may lead to vessels being at risk of taking on water and capsizing. Localised disruptions of small harbours or ports is possible for short period. Localised damage to coastal infrastructure is possible (mainly Wed-Thurs). Localised disruption to beachfront activities. The public at risk of being swept off coastal rocks due to infrequent large waves (Wed-Thurs).
Instruction: Small vessels are advised to seek shelter in harbours, bays or inlets.
SOUTH AFRICAN WEATHER SERVICE
Cape Town Weather Office
2nd Floor: Oval Office Park
Cape Town Int airport
Freight Road
Matroosfontein
Cape Town
E-Mail: factfc@weathersa.co.za
Tel: 021 935 5700
Legal notice:
“This warning from SA Weather Service must be communicated as received and may not be altered under any circumstance.
It must be forwarded or communicated in its entirety and no portion hereof may be replicated or copied and distributed.”