A new Predictions report will first become available within 24 hours from the time a new prediction is created in the dashboard. From that point on, the report will update in the dashboard weekly from the time the new prediction is created.
For example, if you created a new prediction on a Tuesday at 3:00 PM, the new report for that prediction will be available by Wednesday at 3:00 PM. That same report will subsequently update every Tuesday at 3:00 PM thereafter.