I looked at the result of (G2K) rendering of a table in my note (above) and found it unreadable. Let see if I could do better here:

A table for estimating wave size by wind speed

Conditions Necessary for a Fully Developed Sea at Given Wind Speeds, and the Parameters of the Resulting Waves
Wind Conditions Wave Size
Wind Speed in One Direction/ Fetch/ Wind Duration/ Average Height/ Average Wavelength/ Average Period / Speed (kph)
19 kph       19 km      2 hr   0.27 m     8.5 m    3.0 sec    2.83 m/sec (10.2 kph)
37 kph     139 km     10 hr   1.5 m    33.8 m    5.7 sec    5.94 m/sec (21.4 kph)
56 kph     518 km     23 hr   4.1 m    76.5 m    8.6 sec    8.90 m/sec (32.0 kph)
74 kph  1,313 km     42 hr   8.5 m   136.0 m   11.4 sec  11.91 m/sec (42.9 kph)
92 kph  2,627 km     69 hr 14.8 m   212.2 m   14.3 sec  14.84 m/sec (53.4 kph)

Now we can see that a day of 60 kph winds over the gulf of Thailand (as the fetch) can create 4+m waves (enough to go over the first floor of many beach houses) with the wave speed of 32 kph (imagine being hit by a slow running car). In herricans, wind speed are usually about 120-200 kph (off the scale in the table ;-); the gulf can provide the necessary 'fetch' (clear run);... So it is possible to have 15+m waves pounding coastal areas with speed 60+kph. What more if there is a high tide on a full moon day after a heavy rain... where high waves run into draining fresh water in opposing direction; both fronts have no where to go but up!