Government announcement

Sistema De Alertas Tempranas -Siata- (Early Warning System)


The SIATA - Early Warning System - is a project of the Metropolitan Area of the Aburrá Valley ; The City of Medellin , headed by the Administrative Department of Risk Management DAGRED . Constitutes a major risk management strategies that comprise the DAGRED and Municipal Councils Risk Management CMGR , the different municipalities in the region .

The Early Warning System currently has on various networks for monitoring rain ( 71 sensors) ; meteorological variables such as temperature and wind direction and speed ( 7 stations ); Level of Creeks (8 sensors) and Soil Moisture ( in calibration). It also has a network of cameras in livestreaming (7 cameras). With the information generated from these networks and information along with Hydrometeorological Radar ( installed in Santa Elena ) alerts are generated to alert the community about the possible occurrence of an event that can generate an emergency


The main objective of the project is a timely alert the community about the probability of occurrence of extreme hydrometeorological events that may generate an emergency situation and how to reduce the impacts of phenomena through the implementation of measures to respond to an imminent threat. Additionally, the aims SIATA monitoring of watersheds and micro watersheds in real time, and regional hydrological and meteorological modeling , generating vital information for environmental management and risk .


In SIATA we are working on the implementation of a model of atmospheric model forecast and hydrological response of the basin of the Aburrá Valley, in order to ensure a prediction model according to the topography of our own conditions. Radar located in Santa Elena is key for modeling and prediction processes we developed to serve the community

Means of verification

From Constant monitoring of hydrometeorological variables, basins and slopes of the region to the community alert against the possible occurrence of an event giving rise to an emergency broadcast. Stations that make up the networks are distributed throughout the Aburrá Valley and operate under strict calibration process, and corrective and preventive maintenance , ensuring its continued operation.
With the knowledge of the behavior of rainfall, temperature, relative humidity , the wind speed and direction , the level of streams and the saturation level of the ground, first-hand that feeds own weather models generated to the Aburrá Valley and delivering information to citizens and local reginal character. The operating principle of communication for the stations is the same for all three networks. A real-time communication types GPRS ensures the constant flow of information from stations to our operations center located in SIATA Tower . The stations send every minute information regarding the variables that are monitored .


from may 2014 to may 2025


Project description:

Contact Person

Mr Jaime Gomez
Deputy Director for knowledge and disaster risk reduction, administrative department for disaster risk management


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