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 Status:Ongoing analysis Material from: Linus

 

 


1. Impact

On 9 November Stockholm, Sweden was hit by a severe blizzard. The city got around 40 cm of snow. The snow accumulation over 2 days was the largest since at least 1950 for Stockholm (all winter months included).

2. Description of the event

The plots below show the analyses of z500 and t850 for 6 November to 10 November.

The plots below shows 12-hour forecasts of MSLP and precipitation from the same period as the plots above.



The plots below shows the evolution of the snow depth in Sweden from 8 November 06z to 10 November 06z.


The plot below shows an example of radar image during the snowfall (9 Nov 10z)


3. Predictability

  

3.1 Data assimilation

 

3.2 HRES


3.3 ENS


The plots below show the EFI and SOT for snowfall on 8 November.

The plots below shows the EFI and SOT for snowfall on 9 November.



3.4 Monthly forecasts


3.5 Comparison with other centres


4. Experience from general performance/other cases

 

5. Good and bad aspects of the forecasts for the event


6. Additional material

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