Possible Clues:

• Tsunami
• Coastal flooding cause
• Powerful ocean surge
• Overwhelming surge, as of opinion
• View a lad represented after time to show natural phenomenon
• Widespread demonstration of public opinion, in the main (5,4) {9,6}
• Widespread demonstration of public opinion in the main - an overwhelming surge
• The big swell may be a bore
• Large movement (of water or public opinion)
• Swell event?