Flight Crew Private; Flight Crew Instrument; Flight Crew Commercial; Flight Crew Multiengine
Workload; Situational Awareness
Deviation - Altitude Excursion From Assigned Altitude; Inflight Event / Encounter Weather / Turbulence; Inflight Event / Encounter Loss Of Aircraft Control
Flight Crew Regained Aircraft Control
Weather
While on cruise at FL450; overhead the severe front that was crossing the Southeast on [date]; passing in between two thunderstorms with tops at FL460; we briefly went through turbulences (moderate to borderline severe) which resulted in a climb to 45;150 ft.; immediately followed by a descent to about 44;550 ft.; at a rate of about 750 fpm. The Captain who was the flying pilot immediately took corrective actions. With sky clearing below us as we were just passing the tops of that front; we immediately asked JAX Center for lower and were assigned FL400. during the communication JAX Center asked if we had experienced turbulences due to the proximity of the thunderstorm because they were showing an altitude variation on their radar. We confirmed that we had experienced turbulences and did a PIREP. Avoid getting close to a thunderstorm overhang especially at such an altitude but there was not much signs that we would be experiencing such turbulences because the 2 storms were further than 20 NM from our path.
EMB-505 First Officer reported an encounter with moderate to severe turbulence that resulted in an altitude deviation.