Authorities issued fresh rain alerts, as torrential rains led to evacuations in more than 20 districts.
Heavy rain, a security alert and an oil spill caused delays which led to the decision to abandon the event at 1720 BST.
It will also include the ability to bookmark map locations — so app users can get rain or snow alerts for frequently visited locations.
You can set an alert for rain, high ultraviolet levels, T-shirt weather, cold and snow, and you can establish thresholds for each.
Two CPU machines were used to emulate rain process and as alert server.
Safety equipment includes advance multistage front airbags, front seat-mounted side airbags and side curtain front and rear airbags, electronic stability control and all speed traction control with hill assist, rain brake support, ready alert braking and a rear parking assistant system with rear back-up camera and a security key theft deterrent system.
Aid organisations nonetheless remain alert: fading rains could lead to renewed fighting, causing a surge comparable to the first few months of the crisis, when thousands a day were arriving.
The Met Office has amber "be prepared" alerts for rain in Wales, south-west England and London, and south-east England for Monday evening and Christmas Eve morning.
A red weather warning, the most serious alert, for heavy rain and flooding in Lancashire, was issued by the Met Office on Saturday morning.
China's national meteorological centre on Monday put out a blue alert for heavy rain across 14 provinces and regions – the lowest in a four-tiered warning system.
