CRJ-900 First Officer reported an aircraft loss of control while landing in gusty wind conditions. The aircraft scraped the wing tip during touchdown; which was not discovered until the post-flight walk around.

Narrative

I was performing duties of Pilot Flying"; as a First Officer (FO) on a CRJ 900; following company procedures; for a stabilized visual approach to Runway XXR in ZZZ; the winds on ATIS were 230 @ 25 G32. This is well within the company crosswind landing limits of 20 kts. for an FO; me; to be Pilot Flying. While on approach; I experienced a temporary thermal that got me high; and I corrected immediately onto the PAPI. We were flying VREF +5 added for the gusty winds. Everything was normal thru the beginning of the flare. Then off the right side I experienced a rogue wind gust as the right main gear was touching down. I applied some right rudder and more right alerion as soon as we encountered that rogue wind gust. As fast as I applied the extra correction; the wind gust dissipated; and the Captain announced; "left rudder" and I let off the right alerion and applied left rudder. This entire event happened in a matter of 1 to 2 seconds max; literally in the blink of an eye. Due to the rapidly changing wind gust and changing directions of the winds; it made it difficult to control the airplane resulting in the right wing to touch. During the incident; it did not feel as if the wing had touched; and no passengers during deplaning commented about it. It was found during the post-flight walkaround. The Captain wrote the airplane up; notified Maintenance; and management. Cause: Rogue wind gust from the right; at touchdown; which made it difficult to control the airplane resulting in the right wing to touch.Suggestions: More concentration on landing scenarios in training that aren't just direct crosswinds. Add some shifting/variable wind direction and speeds during the flare/touchdown; while experiencing daytime heating thermals."