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Flood warning
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Flood warning
A flood warning or flood alert is the task of making use of flood forecasts to make decisions about whether warnings should be issued to the general public or if previous warnings should be rescinded or retracted. The task of providing warning for floods is divided into two parts:
The decisions made by someone responsible for initiating flood warnings must be influenced by a number of factors, which include:
A computer system for flood warning will usually contain sub-systems for:
The type of flood warning service available varies greatly from country to country, and a location may receive warnings from more than one service.
In the Philippines, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) branch of the Department of Science and Technology (DOST) issues general flood advisory (for non-telemetered river basins whenever there is a significant amount of rainfall recorded).
Arrangements for flood warnings vary across the United Kingdom with several agencies leading on warnings for emergency responders and the public. The Environment Agency, Natural Resources Wales and Scottish Environment Protection Agency all undertake location specific flood warning activities for communities at risk depending upon the scale of flood risk, technical challenges and investment needed to deliver a reliable service.
Prior to issuing a flood warning consideration is given to:
Dissemination of flood warnings has moved towards a service whereby those at risk can pre-register to receive warnings by phone, email or text message from an automatic system, Floodline. Both warnings and updates about current conditions are also carried by local radio stations. In addition, live updates are carried by the Environment Agency's website, showing which locations have flood warnings in place and the severity of these warnings.
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Flood warning
A flood warning or flood alert is the task of making use of flood forecasts to make decisions about whether warnings should be issued to the general public or if previous warnings should be rescinded or retracted. The task of providing warning for floods is divided into two parts:
The decisions made by someone responsible for initiating flood warnings must be influenced by a number of factors, which include:
A computer system for flood warning will usually contain sub-systems for:
The type of flood warning service available varies greatly from country to country, and a location may receive warnings from more than one service.
In the Philippines, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) branch of the Department of Science and Technology (DOST) issues general flood advisory (for non-telemetered river basins whenever there is a significant amount of rainfall recorded).
Arrangements for flood warnings vary across the United Kingdom with several agencies leading on warnings for emergency responders and the public. The Environment Agency, Natural Resources Wales and Scottish Environment Protection Agency all undertake location specific flood warning activities for communities at risk depending upon the scale of flood risk, technical challenges and investment needed to deliver a reliable service.
Prior to issuing a flood warning consideration is given to:
Dissemination of flood warnings has moved towards a service whereby those at risk can pre-register to receive warnings by phone, email or text message from an automatic system, Floodline. Both warnings and updates about current conditions are also carried by local radio stations. In addition, live updates are carried by the Environment Agency's website, showing which locations have flood warnings in place and the severity of these warnings.