Heavy rain accompanied by thunderstorms and hailstorms lashed several parts of Himachal Pradesh.Seobagh in Kullu district recorded the highest rainfall of 28.8 mm, followed by Lahaul-Spiti’s Kukumseri 23.8 mm and Narkanda 18 mm.The thunderstorms and hailstorms caused power outages in several areas, including Shimla where power supply was restored after nearly 10 hours.The weather department has issued a "yellow" alert for thunderstorms and lightning in certain areas on April 18 and 19.