Continuous Rain Warning Issuance Criteria


Warning Category Criteria
ALERT Monitoring shows that heavy rain is expected to occur within one to three days;Continuous rain is expected for one to three days.
OR
The ongoing rain/thunderstorm is expected to continue.
SEVERE Continuous heavy rain is expected to occur with the amount of rainfall exceeding 60 mm in a period of 6 hours.
DANGER Continuous very heavy rain is expected to occur with a total of more than 150 mm of rain in a 24-hour period.