DPD has suspended all deliveries across central Scotland due to the severe red weather warning.
A statement read: “The Met Office has issued red and amber weather warnings for Friday, January 24 to Saturday, January 25, with strong winds of up to 90mph expected to cause dangerous conditions and substantial disruption.
“A red weather warning signals a risk to life and advises people not to travel into, out of, through or within those areas for the period the warning is in place.
“We are therefore following Government advice and suspending services in central Scotland throughout this period and where we do so, parcels will inevitably incur a 24-hour delay.
“As always, if we have your customers’ contact details we will advise them of any delay.”
Meanwhile, Royal Mail may suspend services across the area.
Their latest update read: “A red weather warning signals a risk to life and advises people not to travel into, out of, through or within those areas for the period the warning is in place.
“Royal Mail takes these warnings very seriously and follows government advice. As a result, in areas covered by a red weather warning we may temporarily suspend all outdoor activities for the duration the warning is in place.”
Amazon has confirmed it has closed three delivery stations – Glasgow, Motherwell and Bathgate.
A spokesperson added: “The safety of our employees and partners is our top priority. Out of an abundance of caution, we have closed sites in the area most severely impacted by the storm. We apologise to customers who will experience a delay in deliveries.”
Evri has asked customers to allow an extra day for parcels.
A spokesperson said: “Challenging weather conditions as a result of Storm Éowyn have affected some deliveries in Scotland and Northern Ireland. Our teams are working hard to deliver wherever it is safe to do so, but we ask customers to allow an extra day for deliveries and track their parcel for the latest updates.
“For more information on impacted areas customers can visit: https://www.evri.com/service-status.”
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It comes as Scots have been urged to stay indoors after the Met Office issued a red danger to life warning for wind on Friday.
Trains have been suspended across the country and thousands of schools will be closed after forecasters predicted wind speeds of up to 100mph during Storm Eowyn.
Police said no motorists should travel in or to the red weather warning area while train operator ScotRail said all services were being suspended due to safety concerns.
The Met Office red warning runs from 10am to 5pm and covers the central belt.
Forecasters said the weather conditions bring a “risk of significant disruption to transport and power supplies as well as dangerous conditions outdoors”, with “very dangerous” driving conditions because of fallen trees and other debris.
They also warned of the potential for damage to buildings and homes.
Police Scotland Chief Superintendent Hilary Sloan said: “Our advice to any road user is not travelling, and that’s really the message we want to get across today.
“It’s really unusual for us to have a red weather warning and that advice is in place for the duration of that warning.”
In a statement at the Scottish Parliament, First Minister John Swinney said: “The Met Office advice is clear, the potential impacts include danger to life, structural damage to property and transport and power disruptions.
“We have to be clear, people should not travel.”
Meanwhile, Calmac Ferries and Western Ferries announced Friday’s planned sailings had been cancelled.
Glasgow and Edinburgh airports saw dozens of flights cancelled on Friday morning due to bad weather conditions.