The passage of cold fronts brought cold temperatures to Guatemala. Here in Rio Dulce temperatures dropped into the 50's Fahrenheit (15C). In Quetzaltenango (Xela) the Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología recorded temperatures of 2 to 4 degrees below zero Celsius which brought thick fog and a coating of white frost on the ground and on roofs. It's expected that the residents of the Altiplano are in for about two weeks of cold weather. Temperatures may drop as low as -7 C. Fog affected Quetzaltenango, La Esperanza, Salcajá, and Olintepeque. White frost covered the fields in Concepción Chiquirichapa. Hospitals in the region have registered an increase in patients with bronchial and respiratory problems.