Flooding risk for Calderdale with more rain forecast

The office has said a frontal system is expected to become slow-moving across parts of northwest Wales, northern England, the far north of the Midlands and much of south and west Scotland.

Rain associated with this feature is expected to become heavy and persistent, especially over hills exposed to the strong west to southwesterly flow.

Experts have said that given the already saturated conditions, flooding is possible either from standing water or from rivers which have remained high after the large rainfall totals over the last few days.

The Met Office chief forecaster said: “A strong, moist westerly flow is expected to develop during Saturday and last through most of Sunday before clearing during the evening.

“This flow is expected to bring a period of heavy and persistent rain, with 50-100 mm of rain falling in many areas, particularly across hills; some upland areas are covered by a separate Amber warning.

“This additional rainfall, falling on to already saturated ground, is likely to lead to further flooding.

“There is some uncertainty in the exact locations of heaviest rainfall, as well as peak amounts; this will depend on how far north the frontal system moves and how long it remains aligned across any one area.

“For this reason, the warning will be kept under review over the weekend.”