People jump into the Guadalquivir river during a heatwave in Sevilla on June 28, 2015Spain remained locked in a heat wave on Tuesday with most of the country on high alert for forest fires and the elderly urged to take extra care. Spain’s national weather office put 40 of the nation’s 50 provinces on either “yellow” or “orange” alert due to the scorching temperatures which are forecast to dip on Wednesday before rising again at the weekend. The highest temperatures were expected to be recorded in the central province of Toledo where the mercury was forecast to rise to 41 degrees Celsius (105.8 Fahrenheit).