3rd windstorm of the week, enhanced by Florence’s moisture, to batter UK into Sunday

By Courtney Spamer, AccuWeather meteorologist
September 22, 2018, 11:25:11 AM EDT

Following Ali and Bronagh, the United Kingdom is bracing for yet another possible windstorm that could move through Sunday.

Two named windstorms have already swept through the British Isles this week, and before seven days has passed, a third windstorm could be named.

A deepening low moving across the Atlantic Ocean late this week will carry with it lingering moisture from former Hurricane Florence. Florence brought historic rainfall and deadly flooding to parts of the eastern United States.

This low will trap that moisture, send it straight into the British Isles and could pack enough of a punch to become the third named windstorm of the season.

Should this be the case, the storm would obtain the name Callum.

UK 9/22

Given the current track of the storm, the heaviest rain could fall in southern Ireland, Wales and southern England where widespread rainfall amounts of 25-50 mm (1-2 inches) are expected.

Wind will also be a concern as this system moves through the Isles.

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"Gale-force winds of 65-80 km/h (40-50 mph) are expected across all of England, Wales and Ireland at this point," said Houk.

Some places could get gusts as high as 120 km/h (75 mph). While the area of strongest winds will depend on the track of the storm, windward facing coasts and the higher terrain are generally more susceptible.

Winds are not expected to be as high as the gusts produced by Storm Ali, but just as much of an impact could be felt.

Recent heavy rains and winds have weakened structures and trees, and the wet ground may result in trees toppling more easily. Sporatic power outages are also possible.

Many are still cleaning up from the first storm of the season, which hit so recently that some communities are still without power.

The effects of this storm will not end with the British Isles. After crossing the North Sea, wind and rain is likely for Germany and Poland into early this week.

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