Friday, November 15, 2013

Super Typhoon Haiyan Storm Surge Animation

 Check out this storm surge animation for Super Typhoon Haiyan, provided by Deltares.

Deltares link:
 Deltares created a storm surge animation that shows computed surge levels for Super Typhoon Haiyan, which generated a devastating storm surge in the Philippines last week.

In personal correspondence with Jeff Masters of Weather Underground, Jeff told me that these surge levels were computed using Delft3D two days after landfall. The wind fields are based on JTWC data.

Thanks, Jeff, for passing this on, and great work by Deltares to model this event so quickly!


  1. This video is from Hernani, Eastern Samar.

    The model stays blue in this region.

    1. Thank you for pointing this out. I suspect this may be due to an important shortcoming of the type of modelling that I did.

      The model did not include wave set-up, but perhaps more importantly, it did not include infragravity wave run-up. The continent shelf of the east coast of the Philippines is very narrow, and one would therefore not expect a large storm surge (as the model also shows). However, the relative contribution to inundation of wave-related processes along such coasts becomes much more important, and these were not included in the model, due to time constraints and lack of topography data. This is definetely something to keep in mind when producing operational forecasts of events like these.

      Maarten van Ormondt