Later that day due to a developing Coming_to_be northerly steering current , the system slowed Change_event_time down and undertook Action a small anticlockwise loop before starting Process_start to move Motion towards the southwest and rapidly intensify Cause_change_of_strength .

During November 18 , due to cooler waters and increased Cause_change_of_position_on_a_scale wind shear , Tia started Process_start to weaken Cause_change_of_strength as it moved Motion southwards under the influence of a strengthening upper-level northerly wind flow .

Thailand 's southern provinces also saw seasonal flash-flooding towards the end of the year , although these were not as destructive as the floods Catastrophe in the more northerly provinces .

However , northerly wind shear initially halted Process_end any further significant intensification and also caused Causation the storm Catastrophe to struggle to maintain deep convection over the center .