Thunderstorm and dust storms are expected to hit the city in coming days. There has been 20 per cent rise in cases of viral fever, diarrhoea. Doctors in the city have appealed people to take precautions. The early start of summer season in first week of April has given a reason to worry. In some parts of India, the temperatures has crossed 45 degrees Celsius leading to increasing cases of heat cramps & heat strokes.