The term alert, from the Italian all’erta, refers to a situation of vigilance or attention. A state or a warning signal is a warning for precautions to be increased or vigilance to be increased.
Similarly, someone who is alert is a person who is attentive to certain issues. For example: “You have to be alert to the players who attack in your sector, since they can harm us”, “Juan must be alert and not be distracted to prevent thieves from entering the premises”. In the same sense, it is used to speak of an animal that is prepared to hunt another, on the lookout for its prey in order to catch it at the right moment. On the other hand, it can also refer to the animal that feels that another is chasing or stalking it, puts itself in an alert attitude to be able to escape as quickly as possible as soon as it has a clear notion of danger.
Alert may also be the period before an anticipated disaster. In the face of an impending attack or an upcoming meteorological phenomenon, the authorities have the possibility of establishing different driving states so that people act accordingly. There is a pre-alert, alert and alarm state, which is decreed when the disaster is already happening.
In this sense, an alert is issued to warn the population that a danger is approaching, so that they can protect themselves or go to fulfill their obligations in case of emergency.
Finally, it should be noted that Alert is a Peruvian town in the Purús province (Ucayali Region), a Spanish newspaper founded in 1937 and a Venezuelan television program dedicated to journalistic investigation.
Colors in weather alerts
A weather alert is one that indicates that a potentially dangerous climatic phenomenon (a strong storm, a hurricane, etc.) is approaching. These alerts generally ask people not to leave their homes and to take shelter.
As determined by the European criterion of climatology, the way in which the degrees of severity of each meteorological situation can be distinguished are green, yellow, orange and red.
Such colors would warn the population of possible rain, snow, winds or high temperatures and would allow the dramatic consequences of these situations to be prevented.
Green color: indicates that there is no risk, so citizens can be calm, without fear that nothing will happen.
Yellow color: this color indicates that there is a danger or threat in a specific place.
Orange color: it takes place very few times during the year and warns of important damages that may affect a group of the population; in general these damages are irreversible, but in some cases there are possible solutions, although after a large investment of money, time and work.
Red color: indicates that there is a catastrophic danger that will affect a large part of the population and will have important consequences on its life and infrastructure. It takes place once every many years and it is important to be extremely vigilant to prevent its consequences.
According to the type of alert that is issued by the meteorological system of the place, the public will be able to know what type of climate awaits them: if there will be rains, snowfalls, winds, cyclones, tsunamis or the temperature will rise sharply and they will therefore be able to take a decision about your own activities to prevent climate change from affecting your health.
To issue a meteorological alert, the meteorological service receives a series of signals through different tools placed in the environment to emit them, and can alert the population to protect themselves from a certain catastrophe caused by a sudden climate change.