More on October's lack of tropical storms

[redbird]

According to the National Hurricane Center,

Only one tropical cyclone existed in the Atlantic basin during October. Isaac...which developed in September...was still a hurricane as the month of October began. The last time no tropical storms formed in the Atlantic during the month of October was 2002...and the last time no tropical cyclones formed during October was 1994. In an average October...two tropical storms develop of which one becomes a hurricane.

So this is unusual but hardly unprecedented.