Temperatures in Metro Vancouver were extremely hot this past week.
"Residents are advised to be ready to leave their properties on short notice should an evacuation order be issued", city hall said.
Access to Barnston Island is now restricted to residents, businesses and those with a family connection.
Residents are being asked to gather essential items, such as medications, eyeglasses, valuable documents, immediate care needs and pets, and prepare to leave quickly.
After an alert was issued for the Township of Langley yesterday, a Surrey flood evacuation alert was issued this morning.
Yesterday, water levels at the the Mission Gauge reached 5.5 metres.
Metro Vancouver has issued an evacuation alert for Barnston Island as the Fraser River keeps rising.
Flooding could begin at about 9.4 metres and the River Forecast Centre has indicated that level could be reached later this week, according to city hall.
What's more, the warm weather has persisted over the past three weeks.
In Grand Forks, where 1,500 properties are under an evacuation order, officials expect another flood event similar to last week. The BC River Forecast Centre, Environment Canada and Emergency Management BC continue to predict increasing river flows over the next several days, due to an especially early and rapid spring snow melt.
Alerts are to advise residents that there is a significant risk of flooding in their area.