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Discussed in the following Daily reports: |
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1. Impact
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A major storm was responsible for the floods in California on 17-19 February (strong winds were reported as well). This was not the first event of the season and California has been battered by anomalous wet weather. The week before more than 150K people were forced to abandon their homes due to a problem with a crack in Lake Oroville's dam as a result of excessive water. The anomalous wet season came after several years of drought conditions in California. |
2. Description of the event
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The rainfall during the winter has put an end to the drought in California. The plots below show tha drought monitoring maps from February 2014, 2015, 2016 and 2017.
3. Predictability
3.1 Data assimilation
3.2 HRES
3.3 ENS
The EFI signal of abnormal rainfall over the region 7 days before the event (and SOT values indicating an extreme scenario). As we get close to the event the EFI become higher.
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