A320 pilot reported severe turbulence and wind shear in cruise flight without any warning from normal weather forecast sources.

Narrative

Encountered Sudden Severe Turbulence - Followed guidance for Severe Turbulence Procedure.Announced be leaving autopilot on per Sever Turbulence Procedure BUT after encountering vertical shear updraft plus 300 feet followed by loss 20 KTS and downdraft shear loss of 600 feet announce and disengaged autopilot and followed manual to ride out shear and regained control after loosing 1000 feet. After exiting downdraft selected speed green (best lift/drag ) dot plus 10 since Severe Turbulent Speed MACH .76 aircraft was not climbing. Recovered climb to 30;000 preciously assigned established altitude. No conflict with any other traffic. No damage. No injuries.Total surprise severe turbulence encounter. Nothing from my electronic flight bag; WSI; or ATC reports of any severe or moderate turbulence in our area. All resources were used.. nothing on radar.. tried to be aware of any turbulence and preventive 1.3 g speed rename was determined in case as a practice all the time to be ready just in case but with all the technology this vertical shear upward 300 feet followed by immediate downdraft loss 1000 feet first time this bad in my XX year 121 career.