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 Status:Ongoing analysis Material from: Linus, Fernando

Discussed in the following Daily reports: http://intra.ecmwf.int/daily/d/dreport/2014/04/28/sc/



1. Impact

On the 27 April 7pm local time (00UTC 28 April), tornadoes hit towns north and west of Little Rock, Arkansas killing approx 17 people (http://edition.cnn.com/2014/04/28/us/severe-weather/index.html?hpt=hp_c2).

2. Description of the event

The WV satellite image shows an active cyclone located in Colorado with a cold front attached moving eastwards crossing the SE Texas and Arkansas. A very active region of convection is seen ahead of the cold front where most of the severe weather events have been reported.

The figures above show the CAPE EFI (shades), precipitation (green symbols) and the ensemble mean of z500 (blue contours) valid for the first forecast day. Little Rock is marked with an hourglass symbol. This plots show the evolution of the weather situation.

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