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2018 National Tropical Cyclone Hazard Assessment 1%/0.2% Annual Exceedance Probability Maps

Created 17/10/2025

Updated 17/10/2025

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Geoscience Australia has produced a National Tropical Cyclone Hazard Assessment (TCHA18). The 1%/0.2% Annual Exceedance Probability Maps provides 0.2-second duration, 10-metre above ground level gust wind speeds across Australia arising from tropical cyclone events over a 2-km grid, for 1% and 0.2% annual exceedance probability (100- and 500-year annual recurrence interval respectively). Surface conditions are assumed to correspond to terrain category 2 conditions as defined in AS/NZS 1170.2 (2011).

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Additional Info

Field Value
Title 2018 National Tropical Cyclone Hazard Assessment 1%/0.2% Annual Exceedance Probability Maps
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/0d18ddf9-bc0b-4bfb-a89a-c845f94fee45
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 01/01/2018 - 01/01/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        100.0,
        -35.0
      ],
      [
        165.0,
        -35.0
      ],
      [
        165.0,
        -5.0
      ],
      [
        100.0,
        -5.0
      ],
      [
        100.0,
        -35.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "2018 National Tropical Cyclone Hazard Assessment 1%/0.2% Annual Exceedance Probability Maps". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/2018-national-tropical-cyclone-hazard-assessment-1-0-2-annual-exceedance-probability-maps