If you aren't afraid of a little SWQL, this should give you all the info you need: Alerts · solarwinds/OrionSDK Wiki · GitHub
You'll basically want to query the AlertHistory table for AlertObjectID's that have both a 1 and a 2 EventType. You can join (or navigate through SWQL) to the AlertObject and AlertConfiguration tables to get extra data in your results as needed. You can also use SQL as a lot of the fields will be the same in the SQL AlertHistory table, but just remember that using SQL queries opens you up to having broken reports, alerts, or views in the future should SolarWinds change the database schema, and they can do this on any upgrade, so you should always use SWQL when possible. I only use SQL when I can't get what I need out of SWQL.