Category: Severe Weather Alert

Severe Weather Alert

The Cape Town Weather Services has issued the following severe weather alert:

Hazard: Damaging Winds
Alert Level: Watch
Valid From (SAST): 25/06/20 09h00
Valid To (SAST): 28/06/20 00h00

Watch: Strong to Gale force (60-80km/h) northwesterly to westerly winds are expected along the coastal regions between Table Bay and Cape Agulhas, spreading to Plettenberg Bay during Saturday (27/06/2020).  Advisory: Strong (50-60km/h) north-westerly winds are expected over the Central and Garden Route (W.Cape) today (25/06/2020), as well as on Saturday (27/06/2020) and including the Cape Metropole.

Hazard: High Seas
Alert Level: Watch
Valid From (SAST): 27/06/20 00h00
Valid To (SAST): 28/06/20 00h00

High seas with wave heights from 6 to 9m are expected between Lamberts Bay and Plettenberg Bay on Saturday, subsiding by Sunday afternoon (27-28/06/2020).

Severe Weather Alert

The Cape Town Weather Services has issued the following severe weather alert:

Hazard: High Seas
Alert Level: Advisory
Valid From (SAST): 27/06/20 00h00
Valid To (SAST): 27/06/20 00h00

High seas with wave heights between 6 and 9m are expected between Lamberts Bay and Plettenberg Bay on Saturday (27/05/2020).

Description: Storm surges / High Seas

Generally heavy seas or damaging waves are a result of strong winds blowing over a large area called a fetch combined with low-pressure systems. Long period swells are often very dangerous to tankers as they may literally snap them in half. Dangerous waves or surges may also be caused by storm surges and tsunami’s resulting in widespread coastal damage and loss of life.

In oceanography, a sea state is the general condition of the free surface on a large body of water—with respect to wind waves and swell—at a certain location and moment. A sea state is characterized by statistics, including the wave height, period, and power spectrum. The sea state varies with time, as the wind conditions or swell conditions change.

Precautions: Storm surges / High Seas

Ships should “idle” into the swell and wind so that the bow of the ship always faces the oncoming swell. If in a small sailing vessel reduce the sail area and steer into the oncoming swell. If along the shore-line stay well back from the highest high water mark as Secure all hatches, doors, windows and ports. Secure all loose items in the interior.
Pump the bilge’s dry and keep pumping them dry at regular intervals. Stow away all loose gear and lash down any large items that cannot be stowed. Break out your life preservers and inform your crew that everyone will be putting them on well in advance of their necessity.
Break out emergency gear like flares and first aid kit, sea anchor, safety harnesses, etc.
Check your position and update your course as plotted on your chart. Prepare alternative routes to more protected areas. If you think you will be in for relatively long haul prepare some hot soup, coffee or stew freak waves may run up beyond the normal high water mark.

If the sea recedes exposing rock and sea bed normally not exposed immediately seek higher ground at least 50m above your current position. Do not try swimming or fishing or other marine recreation during these events. Only extremely experienced surfers will temp their fate under these conditions.

Listen to the radio or TV for warnings and obey the instructions from disaster management officers.

Severe Weather Alert

The Cape Town Weather Office has issued the following severe weather alerts:

Hazard Alert Level Valid From (SAST) Valid To (SAST)
Flooding Warning 11/06/20 01h00 11/06/20 23h00

Localised urban flooding due to continuous ‘on and off’ rainshowers are expected over Cape Winelands, Cape Metropole, western parts of Overberg districts (W.Cape) as well as the eastern parts of Cederberg and Bergrivier municipalities (W.Cape) today (11/06/2020).

Description: Strong damaging winds
Strong damaging winds often occur along coastal regions, but also often occur during thunderstorm activity. These winds are sudden and can cause much damage.Precautions:  Strong damaging winds
Stay indoors where possible away from the windows that open towards the severe winds. Be aware of the following: – sudden cross winds if traveling especially between buildings, fallen trees or power lines and flying debris.
Small boats must stay away from the open sea and seek the shelter of a harbour, river estuary or protected bay.
Parked aircraft should be pointed into the direction of the wind and secured Listen to the radio or TV for warnings and obey the instructions from disaster management officers.Descriptions: SnowSnow is precipitation in the form of flakes of crystalline water ice that fall from clouds. Since snow is composed of small ice particles, it is a granular material.

Precautions: Snow

If driving decrease your speed and leave yourself plenty of room to stop, you should allow at least three times more space than usual between you and the car in front of you.  Brake gently to avoid skidding. If your wheels start to lock up, ease off the brake. Even at temperatures above freezing, if the conditions are wet, you might encounter ice in shady areas or on exposed roadways like bridges. Listen to the radio or TV for warnings and obey the instructions from disaster management officers.

Description: An intense cod front

A tropical cyclone or an intense cyclonic system is a storm system characterized by a low pressure centre generating extreme winds and numerous showers and thundershowers that produce flooding rain and driving winds. These systems may produce torrential rain, high waves, and damaging storm surges resulting in extensive coastal and inland flooding up to 40 kilometres from the coastline.

Precautions: An intense cold frons

Dress in warm brightly coloured wet weather gear (clothing). In the case of a Tropical Cyclone pack a small waterproof survival kit made up of food and drinkable water. If possible wear a life vest or floatation device. If you have flares make sure these are sealed.

If caught unawares barricade windows with wooded panels or strips as the storm will shatter glass windows. If ordered to evacuate do so immediately and in an orderly fashion. Listen to the radio or TV for warnings and obey the instructions from disaster management officers.     

Description: Dangerous veld/bush fire conditions

Whenever there are prolonged periods of little and no rain coupled with warm dry winds, veldt or bush fires can easily be sparked and will spread rapidly in strong winds.

Precautions: Dangerous veld/bush fire conditions

Don’t make fires in the open and/or leave fires unattended. Don’t throw cigarette butts out of cars or in the open veldt. Don’t throw bottles in the veldt as they can magnify the sun’s rays and start fires. Prepare and maintain fire breaks in controlled manner. In the case of a large fire report it immediately and move away from the area to let the professionals deal with it. Never throw water onto a fire started by an electrical fault or fires started by oil or paraffin lamps. In this case sand or a blanket should be used to smother the fire. Listen to the radio or TV for warnings and obey the instructions from disaster management officers.

Severe Weather Alert

The South African Weather Services has issued the following severe weather alert:

Hazard: Storm surges
Alert Level: Warning
Valid From (SAST): 25/05/20 10h00
Valid To (SAST): 26/05/20 00h00

Storm surge is expected along the south coast, between Cape Agulhas and Plettenberg Bay as well as in the False Bay region tomorrow (25/05/2020).

Description: Storm surges

Generally storm surges are a result of strong winds blowing over a large area called a fetch combined with low pressure systems. Dangerous waves or surges may also be caused by storms and/or tsunami’s resulting in widespread coastal damage and loss of life.

Precautions: Storm surges

All recreational beach activities should be suspended. People with beach side properties should be aware of the possibility of being flooded by a rise in sea level and wave surges that could cause damage to their property.

If possible relocate valuable assets to higher ground and be vigilant especially during high tide. If the surge is associated with a Spring High Tide then significant inundation is possible and one should be aware of the times of occurrence of the High tide.

Listen to the radio or TV for warnings and obey the instructions from disaster management officers.

Description: Storm surges / High Seas

Generally heavy seas or damaging waves are a result of strong winds blowing over a large area called a fetch combined with low pressure systems. Long period swells are often very dangerous to tankers as they may literally snap them in half. Dangerous waves or surges may also be caused by storm surges and tsunami’s resulting in widespread coastal damage and loss of life.

In oceanography, a sea state is the general condition of the free surface on a large body of water—with respect to wind waves and swell—at a certain location and moment. A sea state is characterized by statistics, including the wave height, period, and power spectrum. The sea state varies with time, as the wind conditions or swell conditions change.

Precautions: Storm surges / High Seas

Ships should “idle” into the swell and wind so that the bow of the ship always faces the oncoming swell. If in a small sailing vessel reduce the sail area and steer into the oncoming swell. If along the shore-line stay well back from the highest high water mark as Secure all hatches, doors, windows and ports. Secure all loose items in the interior.
Pump the bilge’s dry and keep pumping them dry at regular intervals. Stow away all loose gear and lash down any large items that cannot be stowed. Break out your life preservers and inform your crew that everyone will be putting them on well in advance of their necessity.
Break out emergency gear like flares and first aid kit, sea anchor, safety harnesses, etc.
Check your position and update your course as plotted on your chart. Prepare alternative routes to more protected areas. If you think you will be in for relatively long haul prepare some hot soup, coffee or stew freak waves may run up beyond the normal high water mark.

If the sea recedes exposing rock and sea bed normally not exposed immediately seek higher ground at least 50m above your current position. Do not try swimming or fishing or other marine recreation during these events. Only extremely experienced surfers will temp their fate under these conditions.

Listen to the radio or TV for warnings and obey the instructions from disaster management officers.

Western Cape – Severe Weather Alert

24 May 2020

Western Cape – Severe Weather Alert

The Western Cape Disaster Management Centre has been alerted by the South African Weather Service that severe adverse weather conditions are expected across large parts of the Western Cape starting late this evening.

Members of the public are advised that heavy rain and localised flooding can be expected in the following regions:

–  The City of Cape Town,

–  Overberg

–  Cape Winelands

In addition the SAWS has advised that disruptive snowfalls leading to temporary closure of mountain passes can be expected in the Cape Winelands District on Monday evening, spreading to the Little Karoo mountains overnight into Tuesday.

The Minister of Local Government, Environmental Affairs and Development Planning, Anton Bredell says the predictions indicate that winter has arrived in the Western Cape.

“While we welcome the wet weather given our drought situation, the concern is that the conditions may cause further challenges during this time of lockdown. We want to urge the public to take extra precautions and to contact the emergency services in the event of any emergency.”

The SAWS further predicts gale force winds and high seas with wave heights up to 9m between Cape Columbine and Plettenberg Bay from Monday morning, subsiding by early Tuesday morning. The winds are expected to move into the Central Karoo region by Tuesday.

“Provincial as well as Municipal Disaster Management Centres are already activated for the ongoing COVID-19 situation and will remain fully operational. The easiest number to remember to call in an emergency is 112. This number can be dialled toll-free from any cell phone. We are also calling on communities to cooperate with local authorities and emergency response personnel in the event of any emergency.”

In case of emergency other relevant numbers to call are:

Cape Winelands Municipality                               021 888 5837

Garden Route District:                                            044 805 5071

Central Karoo:                                                          023 414 2603

West Coast:                                                               022 433 8700

Overberg:                                                                 028 271 8111

City of Cape Town:                                                 107 landline or 021 480 7700

Flooding related Tip Sheet

How Can I Prepare for a Flood?

–  Identify the risk in your local area.

–  Prepare a home emergency plan, and identify risks around your home.

–  Remove leaves (from downpipes or gutters) or any other items that can increase the risk of flooding in your area.

–  Have an evacuation plan. Everyone in your family has to know where to go to find shelter.

–  Prepare an emergency toolkit. This should include a first aid kit, torch and portable radio with batteries, candles and waterproof matches, drinking water, a multi-tool, whistle and emergency contact numbers.

What Should I do during a flooding?

–  Monitor current flood warnings. Listen to the radio for emergency warnings, evacuation advice and weather updates.

–  Avoid entering floodwater unless it is necessary, and never underestimate the strength of floodwater, even if you are inside a vehicle.

–   Follow all instructions from emergency authorities.

–  Turn off all electricity and water and take your cellphone with you.

–  Assist elderly and disabled neighbours.

What Should I do after the flood?

–  Before entering your house, wait until the water has dropped below floor level.

–  Check with electricity and water authorities to know whether it is safe for you to use these resources.

–  Be aware of contamination if water sources have been flooded; this could be unsafe to drink.

Further tips provided by the SAWS:

–  (When moving around outdoors) dress in warm brightly coloured wet weather clothing.

–  If caught unawares by strong wind, barricade windows with wooded panels or strips (or furniture if needs be).

–  If ordered to evacuate do so immediately and in an orderly fashion. Listen to the radio or TV for warnings and obey the instructions from disaster management officers.

ENDS.

Media enquiries:

James-Brent Styan

Spokesperson for the Minister of Local Government, Environmental Affairs and Development Planning, Anton Bredell

Mobile:  084 583 1670 / Telephone: 021 483 2820 / E-mail:  James-Brent.Styan@westerncape.gov.za

Severe Weather Alert

The Cape Town Weather Office has issued the following severe weather alert:

Hazard: Snow
Alert Level: Advisory
Valid From (SAST):25/05/2020 – 00h00
Valid To (SAST): 25/05/2020 – 00h00

Is expected over high-lying areas of the Western Cape province on Monday (25/05/2020).

Hazard: High Seas
Alert Level: Advisory
Valid From:25/05/2020 – 00h00
Valid To (SAST): 25/05/2020 – 00h00

High seas with wave heights of 6.0-7.0m are expected between Alexander Bay and Plettenberg Bay on Monday (25/05/2020).

Descriptions: Snow

Snow is precipitation in the form of flakes of crystalline water ice that fall from clouds. Since snow is composed of small ice particles, it is a granular material.

Precautions: Snow

If driving decrease your speed and leave yourself plenty of room to stop, you should allow at least three times more space than usual between you and the car in front of you.  Brake gently to avoid skidding. If your wheels start to lock up, ease off the brake. Even at temperatures above freezing, if the conditions are wet, you might encounter ice in shady areas or on exposed roadways like bridges. Listen to the radio or TV for warnings and obey the instructions from disaster management officers.

For more information or to report incidents, contact the Garden Route Disaster Management Centre at 044-805 5071.

Cape Town Weather Office Alert – Damaging Winds

A severe weather alerts issued by the Cape Town Weather Office today, 25 February 2020.

Hazard Alert Level Valid From (SAST) Valid To (SAST)
Damaging Winds Watch 27/02/20 00h00 29/02/20 00h00

1. Strong to gale force SE winds (55 to 65km/h) are expected between Cape Columbine and Cape Agulhas, as well as Cape Metropole Thursday (27/02/2020), spreading along the south coast to Mossel Bay on Friday (28/02/2020) until Saturday (29/02/2020).

2. Strong interior winds (55 to 65km/h) are expected over the Central Karoo (Western Cape) Thursday (27/02/2020) and Friday (28/02/2020).

 

 

Severe Weather Alert – Advisory

Please find below severe weather alerts issued by the Cape Town Weather Office

Hazard Alert Level Valid From (SAST) Valid To (SAST)
Extreme Heat Advisory 11/02/20 08h00 12/02/20 20h00

 

Expected over northern parts of the West Coast District (Western Cape) today (11/02/2020), but over the Central and Little Karoo, Breede Valley Municipality tomorrow (12/02/2020).

Description: Dangerous veld/bush fire conditions

Whenever there are prolonged periods of little and no rain coupled with warm dry winds, veldt or bush fires can easily be sparked and will spread rapidly in strong winds.

Precautions: Dangerous veld/bush fire conditions

Don’t make fires in the open and/or leave fires unattended. Don’t throw cigarette butts out of cars or in the open veldt. Don’t throw bottles in the veldt as they can magnify the sun’s rays and start fires. Prepare and maintain fire breaks in controlled manner. In the case of a large fire report it immediately and move away from the area to let the professionals deal with it. Never throw water onto a fire started by an electrical fault or fires started by oil or paraffin lamps. In this case sand or a blanket should be used to smother the fire. Listen to the radio or TV for warnings and obey the instructions from disaster management officers.

 Description: Extremely High Temperatures

When temperature and the humidity is high at the same time or when the temperature exceeds a certain threshold, human’s ability to cool their bodies through sweating is reduced. This can be a real threat that leads to hyperthermia.

Precautions: Extremely High Temperatures

Stay indoors in a cool room near a fan if possible. The old and infirm must take extra care to stay hydrated and cool. Avoid strenuous outdoor activity, playing excessive sport and hard labour. Dress in light weight clothes and drink plenty of liquids NOT alcohol.

Listen to the radio or TV for warnings and obey the instructions from disaster management officers

Severe Weather Alert: 17 – 18 January 2020

The Cape Town Weather Office has issued the following severe weather alert:

Hazard: Flooding
Alert Level: Warning
Valid From (SAST): 17/01/20 – 12h00
Valid To (SAST): 18/01/20 – 23h00

Significant rainfall leading to flooding over the coastal regions of the Garden Route today into tomorrow.

For more information or to report incidents, contact the Garden Route Disaster Management Centre at 044-805 5071.