HEAVY rain of more than 100mm expected in parts of SA
High-level warnings have been issued for HEAVY rain of more than 100mm expected within 24-hour periods in parts of SA. Here is the latest.
HEAVY rain of more than 100mm is expected within 24-hour periods in parts of South Africa.
BREAKING: HEAVY RAIN OF MORE THAN 100MM EXPECTED
According to the SA Weather Services (SAWS), heavy rain and storms are expected over the Western and Eastern Cape this weekend.
“Scarcely a week after the last bout of heavy rainfall over southern Africa, numeric weather prediction (NWP) models are suggesting yet another episode of significant rainfall, this time over the Western and Eastern Cape.”SAWS
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A CUT-OFF LOW-PRESSURE SYSTEM IS DEVELOPING
It said a cut-off low-pressure system (the equatorward displacement of a low-pressure system at high altitudes) is developing over the southern Atlantic Ocean to the south-west of the Western Cape.
“This fast-moving system is evolving rapidly and is expected to be encroaching on the west coast of Western Cape as early as this evening (20 October).
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“Whilst cut-off lows are typically efficient producers of rain, often of a heavy nature, these systems also have a reputation for causing widespread severe weather such as flooding, heavy rainfall, and severe thunderstorms.”
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HEAVY RAIN AND SEVERE THUNDERSTORMS ARE EXPECTED
The SAWS said that disruptive rainfall may occur over parts of the Eastern Cape on Saturday, resulting in possible flooding and posing a significant risk to life and property.
“Numeric Weather Prediction (NWP) models suggest 100 mm or more of rainfall, within a 24-hour period, for some places.”
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⚠️🌧️⚠️Yellow level 2 warning for thunderstorms expected over Northern Cape and Western Cape. Valid for the 21st of October 2023 until 16:00 SAST.#saws #southafricanweather #weatheroutlook #weatherupdate #sabcnews pic.twitter.com/7hE0StZxvt
— SA Weather Service (@SAWeatherServic) October 20, 2023
SAWS said the cut-off low will continue to intensify during the weekend as it migrates eastward rapidly.
“By Sunday, most of the thunderstorms will have cleared over the Western and Northern Cape, with the focus shifting to the Eastern Cape and KwaZulu-Natal, where further rainfall is expected to persist.”
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A LEVEL 5 WARNING IS IN PLACE FOR THESE AREAS:
A level 5 warning is in place for the following areas on Saturday and Sunday:
- Senqu / Barkly East
- Nyandeni / Libode
- Port St Johns
- King Sabata Dalindyebo / Mthatha
A LEVEL 6 WARNING HAS BEEN ISSUED FOR PARTS OF THE EASTERN CAPE
A Level 6 ORANGE Warning has been issued for parts of the Eastern Cape.
“It is also relevant to mention that the surface terrain over many parts of the Eastern Cape is still wet and saturated, following recent episodes of good rainfall. Saturated ground has a reduced capacity for infiltration of rainfall. Fresh rainfall on saturated ground rapidly leads to overland runoff, thus exacerbating the risk of flooding, as excess rainfall is diverted to swell river systems.”SAWS
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