EUMeTrain: Nowcasting CAL Module - Synopsis of all Data

At 12.30 UTC, the extension of cell A is rather small and circular already mesoscale and elliptic without a distinct form already mesoscale and elliptic Its cloud top temperatures reach values up to-50°C or warmer up to -55°C or warmer colder than -55°C colder than -55°C . At this development step, the unfortunately rather coarse grid of synoptic observation stations shows already thunderstorms rain not yet any severe weather activiy not yet any severe weather activiy . The RGBs show only a small cirrus shield an extended cirrus shield only a circular cell without cirrus shield only a small cirrus shield . According to the RGBs, the cloudiness consists mainly of water droplets already of ice particles already of ice particles and embedded active Cbs only thick raining cloud only high Cirrus cloud embedded active Cbs . In the area of the cell there are not yet any radar signals radar signals indicating rain intensive radar signal indicating hail radar signals indicating rain . The lightning measurements indicate no lightnings at all some lightnings which happened only recently a number of older lightnings some lightnings which happened only recently . Deviation and automatic cell detection show a highly developed but still growing cell a cell under strong vertical development a decaying cell a cell under strong vertical development . The weather active part of the cell is in the centre of the cell in the upstream part of the cell in the downstream part of the cell in the upstream part of the cell .