Fact: There are six main requirements for tropical cyclogenesis:
- sufficiently warm sea surface temperatures,
- atmospheric instability,
- high humidity in the lower to middle levels of the troposphere
- enough Coriolis force to develop a low-pressure center
- a preexisting low-level focus or disturbance
- low vertical wind shear.
In the Stargate Atlantis 1x10 (The Storm) and 1x11 (The Eye) episodes, the hurricane passes over the mainland, so it is no longer met first point and should therefore be break apart.
Main question: why did the hurricane hit Atlantis?