According to Federal State Budgetary Institution Management on Hydrometeorology and Monitoring of Environment of the Republic of Tatarstan in the second half of day and in the evening on May 12, with preservation at night on May 13, 2016 in the territory of the Republic of Tatarstan while passing active frontal sections by places thunder-storms, a hail, a heavy rain, short-term strengthenings of wind till 15-20, locally to 24 m/s are expected.