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Cumbria Floods November 2009

A full assessment of the impact of the November 2009 flooding on Cumbria is available at the link below:

Cumbria Floods Impact Assessment (2010)

Floods Conference 2010: Powerpoint Presentations

The presentations below are from a conference in 2010 looking at economic and community recovery following major flooding events:

Meteorological Circumstances

Between Wednesday 18th November and Friday 20th November up to 372mm of rain fell over Cumbria. In the 24 hours ending 00:45 on Friday 20th 314mm of rain fell in Seathwaite. This is a record daily rainfall for the UK. The air mass responsible for this rainfall was formed in south tropics where unusually high sea surface temperatures ensured that the air was particularly rich in moisture. The air mass tracked north as part of a “warm conveyor”. As the air was blown over the Cumbrian fells it cooled causing the moisture to condense and begin to fall as rain. The warm conveyor remained over the fells for a period of 36 hours maintaining a steady downpour resulting in the exceptional rainfall levels. Rain earlier in the week ensured that the ground was already saturated in many areas. Flooding occurred in 5 of Cumbria’s 6 district areas, the only one escaping being Barrow. The effect on properties was concentrated in Allerdale and South Lakeland with most significant infrastructure damage occurring in the former district. The picture below outlines the causes and effects of the heavy rainfall in Allerdale (Source: New Civil Engineer (26th November 2009)

Anatomy of Cumbria floods

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