South Wales braces for floods as amber warning upgraded

South Wales is braced for a day of disruption on Monday, 1 December, as the Met Office’s amber warning for rain has been upgraded and extended, with Natural Resources Wales (NRW) warning of flooding, landslides and travel chaos.

The warning, in force from midnight until 11.59pm, now stretches north into Ceredigion while some southern coastal areas have been removed. It covers Swansea, Carmarthenshire, Neath Port Talbot, Cardiff, Bridgend, Rhondda Cynon Taf, Pembrokeshire, Powys and more, with the rest of Wales under a yellow warning.

https://twitter.com/metoffice/status/1995107985983459657

Rivers already swollen

NRW says rivers are already high and the ground saturated, meaning flood alerts and warnings are expected from Sunday evening into Monday morning. Surface water flooding is also likely, particularly in urban and low‑lying areas.

Richard Preece, NRW’s Duty Tactical Manager, said:

“The Amber and Yellow rain warnings in place from the early hours of Monday are expected to bring significant impacts across Wales. With rivers already swollen and the ground saturated, we expect to see a number of flood alerts and warnings issued, with flood warnings indicating flooding is expected.”

Up to 120mm of rain forecast

The Met Office says rainfall totals could reach 100–120mm over higher ground, with 60–80mm likely across hills and 20–40mm in lower areas. Fast‑flowing or deep floodwater is possible, posing a danger to life.

Chief Forecaster Rebekah Hicks said:

“Heavy rain will move over south Wales from late Sunday and through Monday. Whilst rainfall amounts will vary, the largest accumulations are expected over the highest ground in south Wales.”

⚠️ Flood alert levels explained

Flood Alert
Flooding is possible – be prepared.

Flood Warning
Flooding is expected – immediate action required.

Severe Flood Warning
Severe flooding – danger to life.

Check updates every 15 minutes at naturalresources.wales/flooding.

Landslide risk

The British Geological Survey has warned that rainfall of this magnitude has previously triggered landslides in Wales, with natural and infrastructure slopes at risk. Roads and railways could be disrupted, particularly in areas with long diversion routes.

Advice to residents

NRW is urging people to:

• Move vehicles and valuables to higher ground
• Prepare a flood kit with documents, medication and essentials
• Avoid walking or driving through floodwater
• Check local alerts via naturalresources.wales/flooding or call Floodline on 0345 988 1188

Flood alerts and warnings are updated every 15 minutes. NRW teams are working with the Flood Forecasting Centre, emergency responders and local authorities to monitor conditions and issue updates.

Beyond Monday, forecasters expect a changeable week, with low pressure bringing a mix of rain, showers and occasional sunny spells.

Environment News

Explore the latest stories on climate, conservation, and sustainability across Swansea Bay and South Wales. From flood alerts and weather warnings to local green initiatives, stay informed on the issues shaping our environment.

View all Environment stories

#amberWeatherWarning #featured #floodAdvice #floodAlerts #flooding #heavyRain #metOffice #naturalResourcesWales #weatherAdvice

Amber weather warning issued for South Wales as heavy rain forecast

The warning comes into effect in the early hours of Monday, 1 December, and is expected to remain in place throughout the day, with heavy rain continuing into Tuesday morning.

According to the Met Office, rainfall totals could reach 100–120mm over higher ground, with 60–80mm expected across many hills and 20–40mm at lower levels.

Deputy Chief Forecaster Mike Silverstone said:

“Heavy rain will move over South Wales from late Sunday and through Monday. This is a developing forecast, so it’s important to stay up to date with Met Office warnings in the coming days.”

The warning covers a wide area including Swansea, Bridgend, Cardiff, Merthyr Tydfil, and parts of Carmarthenshire and Pembrokeshire.

Natural Resources Wales has urged residents to prepare for possible flooding, especially with rivers already swollen and ground conditions saturated.

🌊 How to stay safe during flooding

Check your flood risk
Visit naturalresources.wales/flooding or call Floodline on 0345 988 1188 to see if your area is at risk.

Prepare a flood kit
Include important documents, medication, phone chargers, and emergency contact numbers.

Move valuables
Relocate treasured possessions and electronics upstairs or to higher shelves.

Protect your vehicle
Move your car to higher ground if flooding is forecast nearby.

Avoid floodwaters
Never walk or drive through floodwater — it may be deeper or faster than it looks.

Stay informed
Follow Met Office and NRW updates for the latest warnings and advice.

Richard Preece, Duty Tactical Manager at NRW, said:

“We expect to see a number of flood alerts and warnings issued. Surface water issues are also likely. We’re urging people to be vigilant and to make preparations now.”

He added that people should avoid swollen riverbanks and never attempt to walk or drive through floodwaters.

NRW recommends preparing a flood kit with essential documents and medication, moving vehicles to higher ground, and relocating valuable items upstairs.

For the latest flood alerts, residents can visit naturalresources.wales/flooding or call Floodline on 0345 988 1188.

Beyond Monday, forecasters expect a changeable week of weather, with low pressure bringing a mix of rain, showers, and occasional sunny spells.

Environment News

Catch up on the latest environmental stories from across Swansea Bay — from flood alerts and climate resilience to green energy and biodiversity.

View all Environment stories

Recent flooding across Swansea and Carmarthenshire

The Amber warning follows a series of severe flooding incidents across South West Wales in recent weeks.

In Carmarthenshire, a major incident was declared after torrential rain triggered widespread disruption and emergency rescues. Fire crews were called to Glanrhyd Dog Sanctuary near Kidwelly, where 34 animals had to be rescued from rising floodwaters. The sanctuary was left devastated, prompting a community fundraising effort that has since raised over £12,000.

In Swansea, the Cwmbwrla roundabout was once again submerged, causing traffic chaos and highlighting ongoing drainage concerns. Emergency services responded to multiple incidents across the region, with Natural Resources Wales issuing flood alerts and warnings throughout the day.

With saturated ground and swollen rivers, forecasters and emergency planners are urging residents to take precautions ahead of Monday’s expected downpours.

Related stories from Swansea Bay News

Flooding devastates Carmarthenshire dog sanctuary
Fire crews rescue 34 animals after rising water hits Glanrhyd near Kidwelly.

£12,300 raised for flood-hit dog sanctuary
Community rallies to support Glanrhyd after devastating floods in Carmarthenshire.

Cwmbwrla roundabout submerged again
Flooding causes traffic disruption across Swansea and wider region.

Major incident declared across West Wales
Emergency services respond to widespread flooding and rescues across the region.

#amberWeatherWarning #featured #floodAdvice #floodAlerts #flooding #heavyRain #metOffice #naturalResourcesWales #weatherAdvice

Was scrolling so #onstorm footage from this morning, and I realized that some people don't seem to know that:

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If you aren't detecting left or right motion on that tornado you are filming:

IT MAY BE COMING
STRAIGHT AT YOU.

🌪 🌪 🌪 🌪 🌪

We really need to get Canadians more aware of this shit, along with "hard-soled shoes and helmets".

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#tornadoes #WeatherAdvice
#GigiTips #onwx