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The long downpour was caused by a lengthy flow of warm, moist air that came from the Azores in the mid-Atlantic. This kind of airflow is common in the UK in the autumn and the winter, and is known as a 'warm conveyor'. The warmer the air is, the more moisture it can hold.

The ground was also already saturated, so the additional rain flowed as surface run-off straight into the rivers.

The steep slopes of the Cumbrian Mountains also helped the water to run rapidly into the rivers.

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How did the cumbria flood start?

The Cumbria flood in 2009 was caused by heavy rainfall that overwhelmed rivers and drainage systems in the region. The prolonged and intense rainfall led to significant flooding across Cumbria, impacting homes, roads, and infrastructure. The flood was exacerbated by the already saturated ground from previous rainfall events.


How much rain does cumbria get a year?

Cumbria, located in northwest England, receives an average annual rainfall of around 2000mm (78 inches). The region's proximity to the Irish Sea and the Lake District National Park contributes to its high precipitation levels. Cumbria's mountainous terrain also plays a role in enhancing rainfall through orographic lifting, where moist air is forced to rise and cool, leading to condensation and precipitation.


Why did the Cumbria floods happen?

The Cumbria floods happened due to heavy rainfall causing rivers to overflow, leading to widespread flooding in the region. The combination of saturated ground and intense rainfall contributed to the severe flooding that affected Cumbria.


When did the floods happen in cumbria?

The floods in Cumbria typically occur during the autumn and winter months when heavy rainfall causes rivers to swell and overflow. The most significant recent flooding in Cumbria took place in December 2015, affecting many communities and causing widespread damage.


What is the annual rainfall in Cumbria?

Cumbria typically receives around 1,800mm (70 inches) of rainfall annually, making it one of the wettest regions in England. The rainfall is distributed relatively evenly throughout the year, with slightly higher levels during the autumn months.