Flood warnings may be issued for Cumbria this evening.
A spokesman for Defra said: "Tonight and early morning Tuesday we will see more significant and concentrated rain moving through and impacting North Lancashire and the whole of Cumbria.
"The rain will be falling on to already wet catchments and our indications are the rivers will respond quite quickly, meaning flood warnings may be issued across Cumbria and North Lancashire.
"In preparation for this weather we have been, and continue to constantly monitor rain and river levels and have teams out on the ground clearing debris from key locations and are working closely with partners."
Matt Crump, manager from the Environment Agency, said: "We are expecting heavy, persistent rain to fall overnight and into tomorrow, falling on already saturated ground. Indications show flood warnings may be issued across areas of Cumbria and Lancashire, and we are reminding people to be vigilant, know their risk in their area and respond to flood alerts and warnings."
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