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On 13 June, the Directorate of the Hazards Observatory (DOA) of El Salvador reported the presence of the Intertropical Convergence Zone (ITCZ) along the Central American coasts and a wide area of low pressure, which prompted the declaration of a nationwide green alert. During this period, a substantial flow of humidity from the Pacific affected the Salvadoran territory, resulting in moderate to heavy rains.
By 16 June, rainfall had intensified, reaching very heavy and persistent levels, particularly in coastal areas and the volcanic mountain range. This led to multiple landslides that affected homes and roads, as well as overflowing rivers that caused flooding. Additionally, accelerated winds with speeds of 20 to 40 km/h and gusts between 50 and 70 km/h were reported.
Given the severity of the effects and the adverse forecast for the following days, the alert level was raised to red on 16 June, and the Legislative Assembly declared a State of Emergency (1).
Between 16 and 18 June, significant rainfall was recorded, with 508 mm in Ahuachapán Centro, 371.7 mm in Santa Ana Oeste, 296.6 mm in San Miguel Centro, and 256.6 mm in San Vicente Sur, making these areas the most affected by the storms.
Due to the constant rains in El Salvador, the humid conditions and accumulation of water led to a significant increase in dengue cases. These conditions were ideal for the proliferation of the Aedes aegypti mosquito, the disease vector, which generated a worrying increase in the number of people affected. Since the end of June, according to data from epidemiological week 30, the dengue situation became concerning, with 472 confirmed cases and a rising trend, including 2 cases of severe dengue and 6 deaths.