1990 Andhra Pradesh cyclone

[1] During that day the system gradually developed further and became the subject of a Tropical Cyclone Formation Alert, by the Joint Typhoon Warning Center as it moved westwards under the influence of the subtropical ridge of high pressure.

[1][2] At this stage the JTWC only expected the cyclone to intensify marginally before it weakened as it made landfall in Southern India within 72 hours.

[2] During 6 May, the system started to move more towards the north-west because of a weakness in the subtropical ridge, as it continued to intensify and became a Very Severe Cyclonic Storm.

[1] The system subsequently weakened and had become a Very Severe Cyclonic Storm by the time it made landfall during 9 May, near the mouth of the Krishna River in southern Andhra Pradesh.

[1][2] As a result of timely warnings issued by the IMD, the Indian government was able to launch an evacuation campaign and order that all fisherman return to shore.

[5] The cyclone had a significant effect on India, with storm surge tides as high as 4.9 meters (16 ft) above normal.

[8][11] Overall the cyclone only caused minor damage to Tamil Nadu with the worst affected area being the district of Chengalpattu, where one of the old shrines of Kasiviswanathar Temple collapsed as high waves hit the coast.

The Indian Army and Naval helicopters took surveys of areas affected by the cyclone, and also dropped food packets.

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Tropical depression (≤38 mph, ≤62 km/h)
Tropical storm (39–73 mph, 63–118 km/h)
Category 1 (74–95 mph, 119–153 km/h)
Category 2 (96–110 mph, 154–177 km/h)
Category 3 (111–129 mph, 178–208 km/h)
Category 4 (130–156 mph, 209–251 km/h)
Category 5 (≥157 mph, ≥252 km/h)
Unknown
Storm type
triangle Extratropical cyclone , remnant low, tropical disturbance, or monsoon depression