 A weakening storm , Omar continued towards the northeast due to a mid to upper @-@ level ridge located south of the system and the mid @-@ latitude westerlies to the north . Late on October 17 , wind shear increased once more as Omar tracked over waters below 26 ° C ( 79 ° F ) . Around 0000 UTC on October 18 , Omar weakened to a tropical storm as deep convection associated with it dissipated . Twelve hours later , while still producing tropical storm @-@ force winds , the storm degenerated into a remnant low pressure area . The remnants of Omar persisted until 0600 UTC on October 21 when it dissipated about 805 mi ( 1 @,@ 295 km ) west of the Azores . 
