I found accidentally within TESS data comparely short flare of WTTS V1198 Tau (amplitude is about 0.05 and duration is about 5 hours). Such events are known as for WTTS well as for CTTS - for example, there is the article Optical Flares of Weak-Line and Classical T Tauri stars.
Hope, this info may be interesting for YSO amateurs from POV of TTS monitoring and data mining.