Northern Tropical QLD as well as large parts of Inland QLD are under a Heavy Rain ALERT via HSC for the next week, as well as a Flood WATCH, as Severe Cyclone / Cyclone Debbie makes landfall and tracks across QLD. Above image 10 day rainfall via WindyTV (purple >500mm, pink >250mm)
Global models are in full agreement that Cyclone Debbie or Severe Cyclone Debbie if does eventually reach Category 3+ strength, will make landfall over the North QLD Coastline during the period between Sunday night and Tuesday morning (most likely on Monday itself). Heavy rain brought on by the onshore steering of the Cyclone is likely to drench large parts of the QLD Coastline through areas South and East of the system as it makes landfall and begins to track inland. Areas from essentially Cairns to St Lawrence are expected to see widespread very heavy rainfall over a short period of time leading to flash flooding, creek flooding and river rises. Widespread falls of 250mm+ are likely along this stretch with scattered falls of 400mm+ also likely and localised totals of 600mm+ expected. Its important people read this information as areas like Mackay may not be under the immediate threat of the Cyclone, but due to its position those sort of areas may see some of the heaviest rainfall.
The system is expected to track inland across Northern QLD and into Western/Central Inland QLD where its expected to sit as a rain depression for a number of days (potentially up to a week). Global models have varying areas of rainfall based off this longer term track, however they are all showing the same totals for the eventual areas that are impacted with falls of 150-300mm likely over Inland QLD and isolated falls of up to 500mm possible. The monsoon trough is likely to remain situated over the Central QLD Coast during this period and continue to drench the St Lawrence to Townsville region.
Due to the amount of rainfall over Coastal parts of Northern and Central QLD along with the dry hardened surface which cant handle much rainfall over Inland QLD. These areas are under a Flood Watch and Heavy Rain alert. Roads and major highways have the potential to be cut with some towns becoming isolated. Its a timely reminder not to drive through flood waters and adhere to emergency personnel’s instructions to remain as safe as possible.