sentences:  On 4 January at 8 am ACST (2230 UTC), TCWC Darwin upgraded the Tropical Cyclone Warning to include Darwin, by 11am ACST (0103 UTC) the TCWC Darwin upgraded the Tropical low to Tropical Cyclone Helen which was located 380 km to the west/south west of Darwin moving towards the north East.During the afternoon of 4 January Tropical Cyclone Helen was steadily moving towards the east to the Daly River Mouth region.At approximately 7pm ACST (0930 UTC) TCWC Darwin upgraded the intensity to 50 knots (Category 2), making landfall at Channel Point approximately 130 km southwest of Darwin at 10pm ACST (1230 UTC), It soon started to weaken due to interaction with land and it weakened into a tropical low on 5 January as it had become less organised.