Aminul islam, an official of Khulna regional met office, said the cyclone made landfall around 6:10pm and will cross Khulna Division within an hour.
According to UNB Khulna Correspondent, they are experiencing heavy rain.
Trees and electric poles have been uprooted in the storm. In some places, vehicular movements have been halted as fallen trees block roads. Many houses and infrastructures have also been damaged. Power supply has been also cut off.
Besides, several embankments in Uttar Bedkashi, Dakhshin Bedkashi unions of Koyra, Pikegachha, Dakope upazila have been inundated and collapsed due to tidal surge caused by the cyclone.
Meanwhile, 41mm rain has been recorded from 6am to 6pm.
The local administration has evacuated 400,000 people in Khulna, Bagerhat and Satkhira districts until Wednesday noon. The coronavirus outbreak and social distancing have made the situation more complex.
Amphan, the first super cyclone to form in the area since 1999, has been forecast to cause storm surges, severe flooding and mudslides.
The Indian Met Office said Amphan crossed West Bengal-Bangladesh coast between Digha (West Bengal) and Hatiya Islands (Bangladesh) across Sundarbans between 3:30pm and 5:30pm IST with wind speed of 155-165 kmph gusting to 185 kmph.
Bangladesh Red Crescent said one of its volunteers helping villagers to evacuate became the first fatality after the boat he was in capsized in strong winds. Meanwhile, a child died in Patuakhal's Galachipa after a tree branch fell on him during storm.