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 Status: Ongoing analysis Material from: Linus


 


1. Impact

In January 2021 Singapore saw two major precipitation. The cases were reported in ECMWF User Forum: Severe Monsoon Surge in January over Singapore . This page shows evaluation for the first event on 1-3 January.

2. Description of the event

Accumulation of precipitation over Singapore from 1 January to 30 January 2021 from observations (black) and forecasts for the observation sites.



The plots below show analyses of MSLP and 6-hour forecasts of precipitation from 30 December 00UTC to 4 January 00UTC, every 12 hour.


3. Predictability

  

3.1 Data assimilation

 

3.2 HRES

The plots below show observations and HRES forecasts of 72-hour precipitation valid 1-3 January, from different initial dates. 


3.3 ENS

The plots below show EFI for 3-day precipitation valid 1-3 January, from different initial times.

The plot below shows the evolution of the 3-day precipitation starting on 1, in the box outlined in the plots above. The plot includes HRES (red dot), ENS control (purple dot), ENS distribution (blue box-and-whisker) and model climate (red box-and-whisker). 


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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