Leeds Civic Hall will be lit up red white and blue tonight and all weekend in memory of the victims of the Nice attack.
84 people have been killed after a lorry ploughed into crowds celebrating France's national Bastille Day in Nice.
Francois Hollande says it was a "terrorist attack" and has extended the country's state of emergency.
Safety Check automatically sends users in an affected area a note asking if they are safe.
When a user clicks on "yes, let my friends know," the tool then notifies their Facebook friends.
In a statement, a Facebook spokesperson said: "We hope the people in the area find the tool a helpful way to let their friends and family know they are OK."
Brendan Cox, widower of MP Jo Cox whose funeral was due to take place on Friday, tweeted:
The Tricolore flies at half mast in Bradford's Centenary Square in memory of those killed in yesterday's Charlie Hebdo terror attack in Paris.
Police forces across Yorkshire have taken part in a moment's silence in memory of those who were killed in terrorist attacks in Paris yesterday.
The city of Hull is getting ready for a big weekend of international sporting action.
Three of the Rugby League World Cup's matches are due to be played in the city with the first between Papua New Guinea and France on Sunday. James Webster's been finding out how the city's getting ready.
It's exactly one year to go until the Tour De France comes to Yorkshire. Brian Robinson, the first British rider to win a stage of the race will launch the official countdown later on, alongside a hundred cycling schoolchildren.
Lincolnshire Fire service is recruiting new firefighters for the first time in five years. The service is looking to employ up to ten new full time workers, who will then be assigned to work throughout the county.
Candidates will be assessed on things like physical ability and problem solving, as well as on personal qualities. Five hundred applications will be accepted by the service, with an additional 150 applicants placed on a holding list.
A memorial service is being held on Monday for Grantham schoolboy Pierre Barnes, who died whilst on holiday with his family in France. The 12 year old disappeared during a fierce storm on the island of Pourquerolles.
His body was found days later at sea. The service is to be held at All Saints Church in Barrowby. Children from King's school in Grantham, where Pierre was a pupil, are expected to attend, along with Pierre's family and members of the local community.