High-Impact Weather Assessment Toolkit (HIWAT)

The High Impact Weather Assessment Toolkit (HIWAT) uses a mesoscale numerical weather prediction model and the Global Precipitation Measurement (GPM) constellation of satellites. The toolkit includes a suite of ensemble model forecasts to constrain uncertainties and provide a probabilistic forecast for improved decision-making. The toolkit provides outlooks for lightning strikes, high-impact winds, high rainfall rates, hail damage, and other weather events. The toolkit provides a 54-hour probabilistic forecast over Nepal and Bangladesh along with parts of northeast India (i.e., the Hindu Kush Himalayan region). HIWAT will also support threat assessments, such as thunderstorm intensity, using GPM and impact assessments using Landsat/MODIS land imagery to identify damage scars. The dataset files are available from April 2, 2017, through October 2, 2022, in netCDF-3 format.《高影响天气评估工具包》（HIWAT）运用中尺度数值天气预报模型以及全球降水量测量（GPM）卫星星座。该工具包集成了一系列的集合模型预报，旨在约束不确定性并提供概率预报，以辅助决策优化。工具包涵盖了对雷击、强风、高强度降雨、冰雹损害以及其他天气事件的预测展望。针对尼泊尔和孟加拉国以及印度东北部部分地区（即喜马拉雅山脉地区），工具包提供了长达54小时的概率预报。此外，HIWAT还将支持通过GPM进行雷暴强度评估以及利用Landsat/MODIS陆地影像进行影响评估，以识别损害痕迹。该数据集文件自2017年4月2日起至2022年10月2日止，以netCDF-3格式提供。