Tropical Cyclone Forecast Tracks

Tropical cyclones are low pressure systems that form over warm tropical waters and have gale force winds. The data depict the past, recent and predicted track and movement of a cyclone. The forecast times are at 24 and 48 hours from the time of issue. Areas of uncertainty indicate possible tracks over the forecast period. The extent and intensity of damaging winds (gale, storm and hurricane-force) at 0, 24 and 48 hour are also shown. The data are issued at a similar frequency to the Bureau of cyclone advice, although they may not be available if warnings are hourly. In special circumstances, forecasts up to 72 hours may be issued for emergency management agencies.

热带气旋（Tropical Cyclone）是形成于温暖热带洋面的低压系统，伴随有烈风（gale force）级及以上风力。本数据集展示了某一热带气旋的过往、近期及预测移动路径与运行轨迹。其预报时效为发布时刻起的24小时与48小时。不确定性区域标注了该气旋在预报周期内的潜在移动路径。此外，数据集还展示了0小时、24小时及48小时节点处，破坏性风力（烈风、暴风（storm）及飓风级（hurricane-force））的影响范围与强度等级。本数据集的发布频率与气旋咨询局（Bureau of Cyclone Advice）的预警咨询发布频率相近，但当发布逐小时实时预警时，本数据集可能无法同步更新。特殊场景下，可针对应急管理机构发布最长72小时的预报产品。