An online reporting system for tornadoes, waterspouts and funnel clouds over Greece: http://tornado.geol.uoa.gr

Περίληψη

A systematic effort started in 2007, by the Laboratory of Climatology and Atmospheric Environment (LACAE) at the University of Athens (UoA), in recording tornado activity in Greece. In the fall of 2009, LACAE launched the first online tornado report system, which since then has been settled fully operational. This paper illustrates the methodology of reporting and quality-control procedure of the Greek online Tornado  Report System (GTRS).
The main goal of the GTRS is to collect, verify and provide detailed and quality controlled information regarding tornado activity in Greece, using a web based geographical user interface application and homogeneous data reports. The GTRS consists of three individual user friendly steps, encompassing detailed information regarding the type, the exact location, the impact and date of the event. The reported tornado event is subject to plausibility check by a quality control procedure based on cross check with other sources.
The GTRS is an innovative online system for reporting tornado, waterspout and funnel cloud activity over Greece, using a web GIS framework. More than 170 reports (by April 2014) have been submitted to LACAE since 2009, revealing unreported tornado events and contributing to the research of tornado climatology.