The question asks for the Common Era (CE) equivalent of the year 72 of the Saka era mentioned in the Junagarh inscription during Rudradaman's reign.
To convert a year from the Saka era to the Common Era (CE), we add 78 to the Saka year because the Saka era began in 78 CE.
The formula is:
CE Year = Saka Year + 78
Given Saka Year = 72.
Using the formula:
CE Year = 72 + 78
CE Year = 150
Therefore, the terrible storm mentioned in the Junagarh inscription occurred in the year 150 CE.