Mária Putsay, Kornél Kolláth and André Simon (Hungarian Meteorological Service)
On 10 June 2013, a severe thunderstorm that produced large hail moved across parts of Hungary. The authors observed that the orientation of the ice plume produced by the storm changed during its late development stage. The causes for this behavior are analysed through an analysis of the storm motion vector and the wind vectors. Here is the report in pdf-format. In addition, a Powerpoint presentation and two animations (satellite, radar) illustrate the case.
A new version of the Best Practices Document is now available, which was edited by John Mecikalski, who improved the English.
Marianne has updated the Best Practices Document. The main update is the addition of Chapter 3.6, which describes the Convective initiation product developed by the Japanese Meteorological Agency that is run operationally on MTSAT data.
Akira Sobajima (JMA) has provided a report on the Theoretical Basis for the Rapidly Developing Cumulus Areas Derivation Algorithm [pdf] that is used at JMA (also available on the Documentation page under Convective Initiation).
A description of the NEFODINA algorithm, provided by Davide Melfi, was added to the website. It can be found on the Documentation page under “Mature Storms” and here.