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The South African Weather Service has warned that Capetonians can expect chilly, windy and wet conditions to resume from Monday, 13 July 2020…

Following on last week’s wintery weather, snow, and heavy rainfall in the region, another cold front will make landfall on the south-western areas of the country.

With gale force winds blowing at 65 to 100 km/h, the highest impact will include communities around Table Bay, False Bay, Hermanus, Cape Agulhas and adjacent interior areas.

According to SAWS, marine impacts will also include high to very high sea conditions, with heights ranging from 6 to 13 m along the Northern and Western Cape coastal line, spreading to the Eastern Cape during the course of Monday.

Gale force winds to hit other provinces

The cold front willalso  result in gale to strong gale force (65 – 100km/h) north-westerly to westerly winds over the Western, Northern and Eastern Cape Provinces as well as along the coast between Cape Columbine and George, spreading to Port Alfred in the evening.

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High seas, with wave heights of 6 to 9 m are expected between Lamberts Bay and Port Alfred, with very high seas of wave heights between 9 to 13 m expected between Slangkop and Port Alfred.

The coast between Cape Columbine and Plettenberg Bay (Western Cape) can also expect storm surge, which may lead to further coastal infrastructure damage and beach erosion.

SAWS warned that the high winds may result in:

  • Damage to coastal infrastructure, beach erosion and difficulties for boaters and fishers
  • Disruption of harbours and ports as well as beachfronts can be expected. Medium to large vessels will be at risk as a result of dragging of anchors
  • Damage of formal and informal settlements
  • Falling trees are likely to affect properties and road travel
  • Increased travel time is likely and high sided vehicles are at risk of falling over as a result of crosswinds particularly on the N1, N2, N7 and R60
  • Strong north-westerly winds over the interior may fuel runaway fires over the Eastern Cape
  • Flooding of roads and informal settlements, which may lead to damage of property and displacement of vulnerable communities, especially in the Cape Winelands, Cape Metropole and western Overberg.
  • There is also a risk to life due to fast moving streams, damaged roads and low bridges. Disruption of traffic is likely, as well as increased motor vehicle accidents. Vulnerable areas are likely to experience disruption to essential services.

Alerts issued by the South African Weather service can be seen in figure 2 below.

Figure 2: Alerts valid for Monday, 13 July 2020.

Cold to very cold conditions expected

Cold to very cold conditions are expected over parts of the Western Cape and Northern Cape on Monday, spreading to the remainder of the country on Tuesday and Wednesday.

Minimum temperatures are expected to plummet significantly, with widespread frost predicted for Wednesday morning, 15 July 2020, across the central interior of the country: northern areas of the Eastern Cape, eastern areas of the Northern Cape, extreme southern areas of the North West and Gauteng as well as the Free State.

The South African Weather Service (SAWS) will continue to monitor any further developments relating to this weather system and will issue subsequent updates as required timely. Furthermore, the public are urged and encouraged to regularly follow the weather forecasts on television and radio issued by SAWS.

 

 

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