What is the fine-grained topic of the following text: Inamhi blames the rains on high-altitude air flow from Colombia to Ecuador’s Amazon region, calling the condition “stubborn and persistent.” Of special concern for authorities was a blanket of thick fog in parts of Pichincha, Chimborazo and Canar provinces, which is reducing visibility on highways to 50 meters in some cases. Only return the topic.
Weather conditions in Ecuador and Colombia