Tsunami source with revised CMT solution explains amplitudes at Hilo, HI
Model: 
MOST propagation model in spherical coordinate (Titov & Gonzalez,1997; Titov & Synolakis, 1998). Due to coarse grid resolution, only offshore wave propagation is modeled. Solid wall boundary conditions are set at 50m depth. 
Bathymetry: 
Derived from Smith & Sandwell 2min data. Resolution of the computational grid is variable.It is ~6min near equator and becomes finer when moving south. 
Source: 
CMT solutions from Harvard and USGS were used 
Results: 
 Harvard source model parameters
 NP1: 160km X 60km, slip=5m
 NEIC source model parameters
 NP1: 180km X 80km, slip=6.5m
 NP2: 180km X 80km, slip=6.5m
 Revised Harvard CMT New!
 NP1: 200km X 70 km, slip = 15m

References: 
Titov, V.V., and F.I. Gonzalez (1997): Implementation and testing of the Method of Splitting Tsunami (MOST) model NOAA Technical Memorandum ERL PMEL112, 11 pp.. (PDF)
Titov, V. V.; Synolakis, C. E., 1998, Numerical modeling of tidal wave runup, Journal of Waterways, Ports, Coastal and Ocean Engineering, 124 (4), 157171. 
