The National Institute of Meteorology (Inmet) issued a warning of potential danger for frost in the Paraíba Valley. The warning is valid between midnight and 7am this Thursday (18). According to the agency, there is a slight risk of crop losses due to low temperatures. The forecast is that thermometers will reach up to 3°C in the areas affected by the alert. The warning was issued one day after Campos do Jordão recorded frost and the lowest temperature in the state of São Paulo. On Wednesday morning (17), thermometers reached 3.1°C in the city of Serra da Mantiqueira. Now on g1 The cities in the region included in the alert are: Paulista Waterfall Campos do Jordão Cruise Guaratinguetá Monteiro Lobato Pindamonhangaba Queluz Santo Antônio do Pinhal São Bento do Sapucaí São José dos Campos Vargem In addition to Vale do Paraíba, the alert also covers areas of Southern Fluminense, South and Southwest of Minas Gerais, Metropolitan Region of Campinas and Macro Metropolitana Paulista. Inmet advises that, if necessary, the population contact Civil Defense by calling 199. Colder The cold is expected to intensify in the coming days in the region. In São José dos Campos, the minimum temperature should reach 13°C this Thursday (18), while the maximum temperature should not exceed 21°C. On Friday (19), thermometers are expected to drop even further. The forecast indicates a minimum of 11°C and a maximum of 19°C, according to the State Civil Defense. According to the agency, the drop in temperatures is caused by the action of a mass of cold air over the region. Due to the intense cold, Civil Defense also directs special attention to homeless people and recommends that they seek shelter. The tendency is for minimum temperatures to rise again from Saturday (20), remaining above 10°C in the following days. See more news from Vale do Paraíba and the Bragantina region