The tropical cyclone Vayu formed in Arabian Sea has converted in category one and the Metrological Department issued alert in this regard.
Talking to Radio Pakistan Karachi, met office spokesman Sardar Sarfraz said the cyclone is 700 kilometer away from Karachi.
Currently no area of Pakistan coastline is under threat.
He said isolated heavy rain is expected with dust thunderstorm in three districts of Sindh Tharparkar, Badin and Thatta from tomorrow (Thursday).
The spokesman further said that Karachi is in the grip of very hot weather with temperatures rising to above 40 degree centigrade today and Karachi will also face heat wave situation in upcoming days.
Our Karachi correspondent reports that the Director Fisheries Sindh (Marine) has advised fishermen to remain alert and not to venture in deep sea for fishing.
Vayu cyclonic storm is also expected to hit the coastal towns of Porbandar, Mahua, Veraval and the Union Territory of Diu in India tomorrow.
Meanwhile, Provincial Desaster Management Authhority issued directives to differnet departments to take necessary steps.
According to the directives, all necesary steps should be taken in different districts of Sindh including Tharaprker, Sujawal and coastal belts of Thatta and Badin.
The steps are now being taken in view of heavy rain in these areas which is expected tomorrow and on Friday followed by a dusty storm.
Issuing an high alert to health department by Deputy Commissioner Tharparker, leaves of all doctors have been cancelled in all hospitals of the district to meet any sort of emergency besides to ensure of life saving drugs in all hospitals.