Several vehicles have been damaged by falling trees in the Biddulph area of Staffordshire, trees have also blocked roads near Audley in Staffordshire and near Nantwich in Cheshire, police said.
It's warning southeast winds veering southwest will gust generally between 100 and 130km/h, higher in some coastal areas and on high ground.
The Met Office's Chief Meteorologist Frank Saunders said: "Strong winds at this time of year can increase the rate of leaf fall which can potentially block drains or culverts and, with the heavy rainfall expected over Friday and Saturday, could well heighten the potential for flooding".
"Further warnings were being considered later Friday across parts of the south and east, with the risk for another swathe winds and rain", according to Met Éireann.
The Met Office has now issued a yellow warning for blustery conditions towards the end of the week on Friday. Winds will also be an issue with gusts over 50mph.
The Road Safety watchdog advises road users to check local weather and traffic conditions and be aware of the conditions before setting out on a trip.
Here, Clare County Council has held meetings involving various responders as they monitor the expected situation locally.
The National Emergency Coordination Group is meeting today to prepare for the arrival of Storm Callum.
Warrell added: "Our teams are doing all they can to reduce the risk for communities, but if there is flooding we want to make sure people are doing all they can to keep themselves safe".
While heavy rain is expected to continue into the Saturday, the wind is now believed to ease off by Friday evening.
Where flooding may occur there is a chance of delays or cancellations to train and bus services.
SEPA said that high tides are expected to affect the area Argyll and Bute and Ayrshire and Arran and Skye and Lochaber in particular, due to "a storm surge and large waves" associated with the storm.