Evaluation of Storm Surge Caused by Typhoon Yolanda (2013) and Using Weather - Storm Surge - Wave - Tide Model

Abstract

This paper presents a comparison between numerically estimated storm surge invoked by typhoon Yolanda (2013) and field survey results. In order to estimate the typhoon more accurately, TC-Bogus scheme is used in typhoon simulation. This scheme has a potential to improve an initial atmospheric field and give a better results, in terms of routes and minimum sea surface pressure of the typhoon. In the results of calculated storm surge, a height of the estimated storm surge reached approximately 5.0 m at Tacloban. This value is a good agreement with the measured height. The timing of the storm surge was 00:00 UTC 8th November 2013. The estimated time of the storm surge invoked by Yolanda is almost the same with that of information from residents. Thus, the storm surge model composed of the WRF, FVCOM, SWAN and WX-tide has a potential to reproduce the storm surge realistically.