ⓘ Lynmouth Flood. The Lynmouth Flood occurred on the night of the 15–16 August 1952, principally affecting the village of Lynmouth, in north Devon. A storm with h ..


ⓘ Lynmouth Flood

The Lynmouth Flood occurred on the night of the 15–16 August 1952, principally affecting the village of Lynmouth, in north Devon. A storm with heavy rainfall, combined with already saturated soil and flood debris, led to the flooding of the village and a total loss of 34 lives.


1. Background

On the 15 and 16 of August 1952, a storm of tropical intensity broke over south-west England, depositing 229 millimetres 9.0 in of rain within 24 hours on the already saturated soil of Exmoor, Devon. It is thought that a cold front scooped up a thunderstorm, and the orographic effect worsened the storm. Debris-laden floodwaters cascaded down the northern escarpment of the moor, converging upon the village of Lynmouth; in particular, in the upper West Lyn valley, fallen trees and other debris formed a dam, which in due course gave way, sending a huge wave of water and debris down the river. A guest at the Lyndale Hotel described the night to the Sunday Express:

From seven oclock last night the waters rose rapidly and at nine oclock it was just like an avalanche coming through our hotel, bringing down boulders from the hills and breaking down walls, doors and windows. Within half an hour the guests had evacuated the ground floor. In another ten minutes the second floor was covered, and then we made for the top floor where we spent the night.

The River Lyn through the town had been culverted to gain land for business premises; this culvert soon choked with flood debris, and the river flowed through the town. Much of the debris was boulders and trees.

Overnight, more than 100 buildings were destroyed or seriously damaged along with 28 of the 31 bridges, and 38 cars were washed out to sea. In total, 34 people died, with a further 420 made homeless. The seawall and Rhenish Tower survived the main flood, but were seriously undermined. The tower collapsed into the river the next day, causing a temporary flood.

At the same time, the River Bray at Filleigh also flooded, costing the lives of three Scouts from Manchester who had been camping alongside the river overnight.


2. Cause

The root cause of the flood was heavy rainfall associated with a low-pressure area that had formed over the Atlantic Ocean some days earlier. As the low passed the British Isles, it manifested as a weather front which caused exceptionally heavy rainfall, the effect of which was intensified because the rain fell on already waterlogged land; the effect was further exacerbated over Exmoor by an orographic effect. The lack of satellite data in 1952 meant the weather could not be forecast as reliably as it can be today.

Similar floods had been recorded at Lynmouth in 1607 and 1796. After the 1952 disaster, Lynmouth village was rebuilt, including diverting the river around the village. The small group of houses on the bank of the East Lyn river called Middleham between Lynmouth and Watersmeet was destroyed and never rebuilt. Today, there stands a memorial garden.

On 16 August 2004, a similar event happened in Cornwall, when flash floods caused extensive damage to Boscastle, but without loss of life. The hydrological setting of these two villages is very similar.


3. Controversy

A controversy has started that the flood was caused by secret cloud seeding experiments carried out by the Royal Air Force RAF between 1949 and 1952.

The theory was fuelled by a 2001 BBC Radio 4 documentary, which suggested that the events of 1952 were connected to Project Cumulus. The programme alleged that "the infamous Lynmouth flood disaster came only days after RAF rain-making experiments over southern England", and that secret experiments were causing heavy rainfall. According to the programme, "classified documents on the trials that Project Cumulus contributed to the conditions that caused this flood have gone missing". A few days before the disaster a seeding experiment was carried out over southern England. Alan Yates, an aeronautical engineer and glider pilot who was working with the operation, sprayed salt in the air and was "elated" to learn of a heavy rainfall in Staines shortly after.

"Survivors tell how the air smelled of sulphur on the afternoon of the floods, and the rain fell so hard it hurt peoples faces." According to an article published in the Forbes Magazine, Sulphur is one of the substances used to "seed clouds as a way to change weather, which began its history as a serious science during WWII.

"Sulfur in a gaseous state mixes with oxygen to form sulfur dioxide, which is hazardous. High levels of sulfur can burn the skin."

One meteorologist has said the experiments could not have caused the accident. Philip Eden alleges "it is preposterous to blame the Lynmouth flood on such experiments". without showing any evidence or backing up his claims by a source for his claims.

He alleges "The storm which caused the 1952 disaster was not confined to the Lynmouth district." while in reality "The East and West Lyn rivers, which drop rapidly down from Exmoor, were swollen even before the fatal storm."

  • Lynmouth is a village in Devon, England, on the northern edge of Exmoor. The village straddles the confluence of the West Lyn and East Lyn rivers, in a
  • Lynmouth Lifeboat Station was the base for Royal National Lifeboat Institution RNLI search and rescue operations at Lynmouth Devon in England from 1869
  • Switzerland is a name given to an area of Devon, around the towns of Lynton and Lynmouth It includes the surrounding coast and countryside Valley of Rocks, Watersmeet
  • clearing fog from airfields. On 16 August 1952 a severe flood occurred in the town of Lynmouth in north Devon. Nine inches 229 millimetres of rain fell
  • Generally, the River is quite shallow, but it can be prone to flooding In the Lynmouth Flood the River Bray was affected by the unseasonably high rainfall
  • geomorphological landforms created in the 1952 flood The lower reaches of the river towards Lynmouth known as the Glen Lyn Gorge, is a tourist attraction
  • the junction of the A39 and B3234. Barbrook was affected by the 1952 Lynmouth Flood A sign showing the height of the floodwater can be seen in Cherrybridge
  • illustrating life in the area over a period of 200 years, including the Lynmouth Flood Disaster of 1952, photographs and models of the Lynton and Barnstaple
  • Angeles Flood of 1938, California, U.S.: 115 dead 1938: Kopuawhara flash flood of 1938, Mahia Peninsula, New Zealand: 21 dead 1952: Lynmouth disaster
  • 1928 Thames flood Lynmouth flood of 1952  34 people were killed, with a further 420 made homeless. Over 100 buildings were destroyed. Flooding from snowmelt