Taiwan is experiencing a significant heatwave coinciding with the Dragon Boat Festival holiday. Today, thirteen cities and counties are forecast to reach temperatures of 36 degrees Celsius or higher. The Central Weather Bureau warns of potential afternoon thunderstorms in northern regions. The heatwave is impacting holiday travel and outdoor activities. Residents are advised to stay hydrated and take precautions against heatstroke. Authorities are monitoring the situation and preparing for potential disruptions caused by the thunderstorms. The high temperatures are expected to persist throughout the holiday period.