Mausam Srsti: 1977 Andhra Super Cyclone

First Ever Super Cyclone-1977 AP Diviseema Cyclone

The land of Andhra is normally prone to Cyclones. One year out of 3 years, Andhra faces Cyclone Threat. Its most common part of Land fall of Intensive Cyclones, which normally blow the part of Country. While Tamil Nadu Holds a comparatively less chances for Threat from Cyclones. A study shows most intense storms track along to the coast of Machilipatnam-Kakinada when it forms near Andaman sea in November. The movement of Ridges and prevailing Sea Surface Temperatures regulate the flow of Cyclones in our basin alone. Another study from Andhra University says a perspective ratio of 5:9 holds good for Andhra when a cyclone forms in Bay of Bengal, while Tamil Nadu ranks with just 2:9.
ANDHRA CYCLONES (1965-2015)--

TAMIL NADU CYCLONES (1965-2015)-

Tamil Nadu systems Normally moves with more Westerly component while a Andhra Cyclone has relatively more Northward Movement than a TN cyclone. Normally when the steering ridge is present along Odisha or Andhra, Cyclones normally track towards Tamil Nadu. It is also observed that when steering Ridge is present along Burma or to the east of India, Cyclones normally track towards Andhra or Odisha.

Why 1977 Diviseema Cyclone is still remembered-

The First Cyclone to make a greater power in Magnitude holds first in Charts after 1999 Odisha Super Cyclone. Diviseema Cyclone holds a record of maintaining a wind speed of 250 km/hr (1-minute). This major Cyclone has tracked along the parts of Coastal Andhra and crossed the coast close to Machilipatnam. The coast is normally a bounty of Agricultural lands and moderately populated areas of Vijayawada, Guntur and Godavari districts. During the attack of Diviseema Cyclone, there were some fisherman along the estuary portion close to Bay of Bengal. It washed off their lives and battered the coast even harder.

This super Cyclone caused massive destruction to the lives of People, Cattle and also agricultural production.

According to IMD classification, the 1977 Diviseema Cyclone holds a upper hand as Category 4 Extremely Severe Cyclone. But the weather tracking models were not so accurate and precise at the time of 1977. The Dvorak technique is used to determine the storm intensity. Normally, this cyclone may be having a 3-min sustenance of 220-230 kmph. Which is a Category 5 Super Cyclonic System.
A rare Satellite image of Diviseema Cyclone 1977-