This is the 9246th most frequent Portuguese word.
carregado
Loaded; charged.
Here, "carregado" is used as an adjective to describe the state of the truck, indicating it is full or containing a large amount of a specific item.
O caminhão está carregado de frutas.
The truck is loaded with fruits.
In this sentence, "carregado" is metaphorically used to express a person's emotion, suggesting a heavy load or a burdened feeling.
Ele estava tão nervoso que me parecia carregado de preocupação.
He was so nervous that he seemed loaded with worry.
This usage of "carregado" describes a condition in which the air possesses a significant amount of a specific physical property, in this case, static electricity due to the storm.