Thiruvananthapuram: Kerala is bracing for a spell of intensified rainfall after the India Meteorological Department (IMD) revised its forecast on Sunday, upgrading the alert from yellow to orange for Thiruvananthapuram and Kollam districts. Pathanamthitta, Alappuzha, Kottayam, Idukki and Ernakulam will remain under a yellow alert as heavy rain continues to lash several parts of the.