Graphical Abstract

• Tweet

Moroda, Y., K. Tsuboki, S. Satoh, K. Nakagawa, T. Ushio, and S. Shimizu, 2021: Structure and evolution of precipitation cores in an isolated convective storm observed by phased array weather radar. J. Meteor. Soc. Japan, 99, 765-784.
https://doi.org/10.2151/jmsj.2021-038
Early Online Release   Graphical Abstract Published

Plain Language Summary: An isolated convective storm was observed by two phased array weather radars (PAWRs) that can perform one volume scan in just 30 seconds. The storm caused localized heavy rainfall on 7 August 2015 in the Kinki District, western Japan. We described the evolution of the storm in terms of precipitation cores and updraft cores that were clearly defined using threshold values of radar reflectivity and vertical velocity. We found that the isolated storm exhibited structures of multi-precipitation cores and multi-updraft cores.

Highlights:

• The observations of two PAWRs enable us to perform dual-Doppler analysis every 30 seconds.
• The storm had nine precipitation cores and five updraft cores. All the precipitation cores were observed along the trajectory of a major updraft core and its branches.
• The evolutions of the precipitation cores and updraft cores were different, although they influenced each other.