Thus´rsday, 15 July 2021, 08:00 UTC
Issued: Thursday, 15 July 2021, 08:00 UTC
Still productive precipitation over large parts of southern and western Germany caused by isolated low pressure area BERND. Many rivers are flooded with water
levels in the order of HQ2 to HQ5.
The already high water levels in southern and western Germany due to the high precipitation of the past days will be further aggravated by large-scale stratiform
rainfall around the isolated low-pressure system BERND. In North Rhine-Westphalia, additional accumulated precipitation of up to 150 mm is to be expected locally.
Tuesday, 13 July 2021, 14:30 UTC
Issued: Tuesday, 13 July 2021, 14:30 UTC
Intense precipitation with accumulated amounts up to 200 mm until Friday will cause floodings and a substantially increase of water levels on bigger rivers in southwestern Germany!
A slow moving low pressure system over central Germany cause strong temperature differences in central Europe. To the east of the cyclone, hot and humid air masses from the southeast are transported northward.
At the same time, cool air masses reach the south from the eastern atlantic. A strong ground-level convergence forms at the air mass boundary, along which repeated heavy precipitation occurs. On the warm side, strong thunderstorms will occur today, which will turn out to be severe, especially with regard to the heavy rain.
Today, the greatest severe weather potential is in southern North Rhine-Westphalia as well as in eastern Belgium and Rhineland-Palatinate.
There, locally more than 120 mm will be reached in 24 hours. In addition, heavy thundery downpours can bring more than 50 mm in a few hours. But also in the remaining parts of southwestern Germany, Belgium and northeastern France, 40 to 100 mm can be expected within 24 hours.
This will lead to more widespread flooding and high water initially on individual smaller rivers and in the course of the week also on larger rivers. With short interruptions, there will also be further rainfall in the coming days until Friday, whereby a larger flood is expected on the Rhine on Saturday.
Further information on the warning situation will follow in the next few days.
Issued: July 13, 2021, 14:30 UTC NB |