As of now (15 UTC Nov 29), the predicted results for the arrival time and intensity of the geomagnetic storm associated with the almost X-class flare are as follows:
NOAA: G2 (03-06 UTC Dec 1)
SEPC (China): G3 (Nov 20UT - 08UT Dec 1),
UK Met Office G3 (21UTC Nov 30 - 18UTC Dec 1)
Australian SWFC: G3-G4 (Nov 1 or Dec 1)