The states of Andhra Pradesh and Telangana have been observing on and off isolated rain and thundershowers since the last few days. In the last 24 hours from 08:30 am on Wednesday, Nalgonda in Telangana recorded 14 mm of rain.
Now rains are expected to increase over both these states as a confluence zone is expected to develop and extend from Jharkhand to Tamil Nadu across Coastal Andhra Pradesh and Telangana.
Humid winds from Bay of Bengal from southeast direction will merge with dry and hot winds from northwest. This merging of opposite winds will lead to instability in the atmosphere. Due to which, thunderclouds are expected to develop, and probability of intense Pre-Monsoon thundershowers will increase.
Despite of these rains, Coastal Andhra Pradesh is rainfall deficient by 38%, Rayalaseema region by 58% and Telangana 62%. Now as these Pre-Monsoon activities will continue for the next few days over many parts of South India including Andhra Pradesh and Telangana, improvement in rain deficiency over these states is likely to decrease to some extent.
This trough or confluence zone is expected to persist. In fact, this will now become a semi-permanent feature which will oscillate in east and west direction leading to varied rains over different regions.
The temperatures over most places in Andhra Pradesh and Telangana have dropped by 2˚C to 3˚C, in the last two to three days. This drop has been attributed to the winds blowing over the region from Central India where widespread rains occurred.
Now we do not expect much increase in both day and night temperatures over these states but still increase by 1˚C to 2˚C cannot be ruled out.
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