预计会有暴雨，突然洪水警报已发布。
Heavy rain is expected to follow and flash-flood warnings have been issued.
冬季风暴预警及警示已在数州发布，南加州的某些地区则在大雨后发布洪水警报。
Winter storm warnings and advisories are in effect for parts of several states, while some areas in southern California are under flood warnings after heavy rains.
南非提高了洪水警报级别，奥兰治河水位已经达到了自1996年已来的最高位。
South Africa raised the flood-warning level for its central Orange River area today as water levels in places were expected to reach the highest since 1996.
洪水警报或食物危机往往会发出一定程度的警告，也有一段能够做出回应准备的时间。
Often with flood warnings or food crises there's a degree of warning and a period of being able to build up a response.
实际估测的区域降水量不仅对进行洪水监测、发布洪水警报起指导作用，而且是各种水文和大气数值模式用到的重要的实测原始资料之一。
Precipitation is not only a kind of essential data to a hydrological or atmospheric numerical model, but also a sort of key information for flood monitoring and warning.
实际估测的区域降水量不仅对进行洪水监测、发布洪水警报起指导作用，而且是各种水文和大气数值模式用到的重要的实测原始资料之一。
Precipitation is not only a kind of essential data to a hydrological or atmospheric numerical model, but also a sort of key information for flood monitoring and warning.
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