NASA finds a lifetime of heavy rainfall from Tropical Cyclone Vardah

December 15, 2016

NASA gathered rainfall data on Tropical Cyclone Vardah from its birth in the Bay of Bengal through its mNASA gathered rainfall data on Tropical Cyclone Vardah from its birth in the Bay of Bengal through its movement west into the Arabian Sea. Rainfall totals were estimated over Vardah's lifetime and path, and NASA found heavy rainfall from the remnants on Dec. 14.

Although Vardah's circulation dissipated the remnants were still producing rainfall in a few stormy areas when the Global Precipitation Measurement mission or GPM core observatory satellite flew over the Arabian Sea on Dec. 13 at 9:31 p.m. EST (Dec. 14 at 0231 UTC).

As GPM flew over the remnants, the satellite's Dual-Frequency Precipitation Radar (DPR) data showed that rainfall was still quite heavy. Rainfall was occurring at a rate of over 101 mm (4 inches) per hour in storms that were moving into the Arabian Sea. GPM's radar (DPR Ku Band) measured storm top heights in a few of these storms that were reaching altitudes above 14 km (8.7 miles). GPM is a joint mission between NASA and the Japanese space agency JAXA.

To calculate the rainfall dropped along Vardah's lifetime path, data from NASA's Integrated Multi-satellitE Retrievals for GPM (IMERG) were used. Rainfall totals were estimated from Dec.7 through 14, 2016 which was the period from Vardah's formation in the eastern Bay of Bengal until the tropical cyclone dissipated over southern India. IMERG showed that Vardah produced heavy rainfall over a large area of the central Bay of Bengal.

The highest IMERG rainfall total estimates of about 500 mm (19.7 inches) were analyzed in the area west of the Andaman Islands where Vardah formed and initially moved very slowly. IMERG total rainfall estimates of over 300 mm (11.8 inches) were shown in many areas along Vardah's track.

The highest IMERG rainfall total estimates over land were found from where Vardah made landfall on India's southeastern coast through dissipation in the western part of the Indian state of Tamil Nadu. Flooding rainfall totals of over 224mm (8.8 inches) were reported in Chennai where Vardah came ashore.

India's RSMC or Regional Specialised Meteorological Centre in New Delhi said on Dec. 15 that the low pressure area and "associated scattered low/medium clouds with embedded moderate to intense convection (developing thunderstorms) lies over the Kerala - Karnataka coast and adjoining some parts of southeast Arabian Sea."

Vardah's remnants have a zero percent chance of redeveloping.
-end-


NASA/Goddard Space Flight Center

Related Rainfall Articles from Brightsurf:

Study projects more rainfall in Florida during flooding season
A new study by researchers at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science projects an increase in Florida's late summertime rainfall with rising Atlantic Ocean temperatures.

Importance of rainfall highlighted for tropical animals
Imagine a tropical forest, and you might conjure up tall trees hung with vines, brightly colored birds, howling monkeys, and ... rain.

New study could help better predict rainfall during El Niño
Researchers at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science have uncovered a new connection between tropical weather events and US rainfall during El NiƱo years.

Mediterranean rainfall immediately affected by greenhouse gas changes
Mediterranean-type climates face immediate drops in rainfall when greenhouse gases rise, but this could be interrupted quickly if emissions are cut.

Future rainfall could far outweigh current climate predictions
Scientists from the University of Plymouth analysed rainfall records from the 1870s to the present day with their findings showing there could be large divergence in projected rainfall by the mid to late 21st century.

NASA estimates Imelda's extreme rainfall
NASA estimated extreme rainfall over eastern Texas from the remnants of Tropical Depression Imelda using a NASA satellite rainfall product that incorporates data from satellites and observations.

NASA estimates heavy rainfall in Hurricane Dorian
Hurricane Dorian is packing heavy rain as it moves toward the Bahamas as predicted by NOAA's NHC or National Hurricane Center.

NASA looks at Barry's rainfall rates
After Barry made landfall as a Category 1 hurricane, NASA's GPM core satellite analyzed the rate in which rain was falling throughout the storm.

NASA looks at Tropical Storm Barbara's heavy rainfall
Tropical Storm Barbara formed on Sunday, June 30 in the Eastern Pacific Ocean over 800 miles from the coast of western Mexico.

NASA looks at Tropical Storm Fani's rainfall rates
Tropical Storm Fani formed in the Northern Indian Ocean over the weekend of April 27 and 28, 2019.

Read More: Rainfall News and Rainfall Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.