Prior to the severe weather, the SMHI issued yellow warnings, which is the lower level of the three-level damage. It is a warning that there may be consequences for society, while the next level – orange – is serious consequences and the highest – red – is issued if it can lead to very serious consequences for society.
”Low and fed”
During Sunday, two freight trains derailed, several dozen roads were destroyed or damaged and basements were flooded. A VMA – important message to the public – was issued. Were the SMHI's yellow warnings sufficient?
It is being investigated. The meteorologists working with warnings are looking at it now, how much rain came and what the consequences were and how well the warnings matched, says Magnus Nilsson Sangrud.
The cause of the severe weather was a low-pressure system with heavy showers.
It lay and fed in the same place, says Nilsson Sangrud.
”Local variations”
The highest precipitation temperature at SMHI's weather stations is Aspeå west of Örnsköldsvik, which received 72 millimeters. Normally, 70-80 millimeters fall during the entire month of September.
There are also local reports of precipitation amounts exceeding 100 millimeters in some areas.
It has been a situation with heavy thunderstorms with large local variations. It can absolutely have been the case that it has fallen more in other places, says Linus Karlsson, meteorologist at SMHI.
