6.4 Using High Resolution Atmospheric Models to Predict Meteotsunami

Wednesday, 25 January 2017: 4:45 PM
Conference Center: Chelan 4 (Washington State Convention Center )
Charles H. Paxton, NOAA/NWS, Ruskin, FL; and L. Paxton, J. M. Collins, and B. A. Mroczka

Meteotsunami waves, over 1 m in height, are created by rapid pressure changes moving rapidly over shelf waters, and cause inundation along Florida coastlines several times per year. Recent research indicates the relationship between rapid atmospheric pressure changes greater than .006 hPa s-1 moving in excess of 10 m s-1 over coastal waters that may produce meteotsunami heights over 0.5 m. The prediction of meteotsunami is challenging over the marine environment where sub-hourly pressure and wind observations are generally not obtainable.  High resolution convection allowing models however, provide a robust environment of atmospheric pressure and wind fields for prediction of meteotsunamis over shallow shelf waters. Based the findings of this project, scripts within the Graphical Forecast Editor produce pressure change and associated advection fields to calculate the development and heights of meteotsunami from high resolution models. This procedure illuminates for forecasters, potential hazards related to this phenomenon which can be transmitted to the public within coastal flood products.

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