Thousands of homes are without power, properties have been damaged and there is widespread travel disruption as Storm Francis batters Wales.
Falling trees have damaged homes and vehicles and blocked roads across Wales after a "danger to life" wind warning.
Earlier on Tuesday, nine people were rescued after a campsite flooded in Carmarthenshire.
Meanwhile, searches of the River Taff in Cardiff have been suspended after reports of people in the water.
An amber weather warning for wind has now been issued for most of Wales from 14:00 BST until 22:00 on Tuesday, with gusts of up to 70mph forecast.
The Met Office has warned of a "danger to life" due to flying debris and large waves, with the possibility of homes, buildings and roads being damaged in the storm.
A number of properties and businesses have been damaged as trees fell down in high winds.
In Cardiff, a man was inside his restaurant when a tree crashed through the roof.
Mamun Miah said he was making phone calls in the newly refurbished Lake Spice restaurant when the wind picked up.
"I saw the building start shaking and the whole tree fell down and the double doors smashed completely," he said, adding that no-one was hurt."I had two colleagues in the kitchen who started running out, they saw something had happened and saw the whole roof come down."
Scottish Power said 3,000 of its customers in mid and north Wales were without power due to high winds.
Homes were without power in Caernarfon, Betws-y-Coed, Blaenau Ffestiniog, Pwllheli, Welshpool, Machynlleth, Llanymynech, Newtown and Caersws.
Western Power Distribution said its teams were attending dozens of incidents across south and west Wales which have left hundreds of homes without power in Powys, Swansea, Carmarthenshire, Neath Port Talbot and Caerphilly county.
Around Cardiff, trees have come down in Colchester Avenue and Boverton Street, Pen y Lan, Plasturton Gardens, Pontcanna, St Fagans Road in Fairwater, Heol Uchaf in Rhiwbina, and on Windsor Road, Penarth, in Vale of Glamorgan.
In north Wales, fallen trees blocked roads near the A55 at Holywell and the A548 near Bagillt, both in Flintshire, and Mold Road in Wrexham.
The A5 between Nant Ffrancon and Capel Curig in Gwynedd is closed due to a landslide, and the A55 at Llanfairfechan, Conwy county, is blocked due to flooding.
Dyfed Powys Police said officers were dealing with a "high volume of trees and lines down" around Brecon, and Gwent Police said a tree was blocking St Brides Road, near the M4 bridge at Magor.
Earlier on Tuesday, the A4076 at Hamilton Terrace, Milford Haven was blocked by a fallen tree, while another was partially blocking the road between Clarey and Star.
In Gwynedd, a tree branch had come down across the A494 between Bala and Dolgellau.
The M48 Severn Bridge has been closed in both directions due to strong winds. Traffic is being diverted across the M4 Prince of Wales bridge.
Elsewhere, fallen trees closed the A487 near the Dyfi Bridge in Gwynedd, the A4080 on Anglesey, the A4160 in Vale of Glamorgan, the A470 in Conwy, the A4042 in Torfaen, and the A4119 in Cardiff.
The Cleddau Bridge was closed to high-sided vehicles and is expected to remain so until about 19:00 BST.
Rail services have also been heavily disrupted across the country, according to Transport for Wales.
A tree was blocking the line between Cardiff Central and Bridgend, affecting services running between the two stations.
A number of other services were cancelled, including between Llandudno Junction and Blaenau Ffestiniog, Ystrad Mynach and Heath High Level, Cross Keys and Ebbw Vale Town, Shrewsbury and Crewe, and Carmarthen and Swansea.
Earlier on Tuesday, campers enjoying the last of their summer holiday were rescued across parts of south Wales after the flood waters rose.
Firefighters used lines and wading gear to rescue nine people and two dogs from a flooded campsite in St Clears, Carmarthenshire, after river levels rose.
The owner of Lakeside Leisure Campsite said everyone was safe and was now in alternative accommodation following the incident.
It had only been open a month following coronavirus restrictions.
Bradley, who did not give his last name, said: "They are all fine, they're drying off.
"We couldn't have foreseen it, it was just the rainwater running down from the hills.
"This year has been dreadful, we've been able to open for a month and it has just poured down."
Natural Resources Wales said the levels at the River Cynin were 2m above their normal levels at 09:00 BST on Tuesday.
Campers at Llwyngwair Manor Holiday Park, in Newport, Pembrokeshire, woke to a "frightening" scene, its manager said.
"Within a very short period of time the river was swollen and it was time to wake the visitors," said Meleri Clare Ennis.
"Everything happened so quickly and I hope we're over the worst."Â
A yellow weather warning for rain remains in place until 06:00 on Wednesday for counties in the north and mid Wales.
A number of properties have been flooded in Neath, Whitland, Tonyrefail and Llanelli, while roads have been closed and some trains disrupted after part of the south Wales main-line railway was left underwater.
National Rail tweeted that the railway line at Neath had been blocked, with trains between Swansea and Cardiff cancelled or delayed.
A 30mph speed limit has been put in place on a number of services in south Wales, with passengers warned to expect delays due to the severe weather.
Traffic Wales warned of "extremely poor driving conditions" and said people should plan ahead.
There was one flood warnings in place along rivers in Carmarthenshire, with communities told to be prepared. There are also a number of flood alerts in place.
Chepstow Racecourse said it had cancelled its scheduled races on Wednesday due to the heavy rain.
Swim Wales warned people not to take "unnecessary risks" at the coast as "large waves can easily pull you out to sea".
A moderate rain warning has also been issued for Ceredigion, Conwy, Denbighshire, Flintshire, Gwynedd, Anglesey, Powys and Wrexham.
A Met Office spokesman said: "Heavy rain during Tuesday and early Wednesday is expected to result in some flooding and disruption to travel."
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