Soon after, a weak low pressure center associated with the system formed 100 nautical miles (190 km) southwest of Acapulco, Mexico.

Satellite pictures showed cirrus outflow was greater in the tops of the feeder bands than in the eyewall chimney.

At this point, the circulation forced moist and unstable maritime air into Arizona which resulted in disastrous floods during Labor Day along with a slow moving cold front.

On September 5, a cloud spiral was still visible west of Baja California, but the storm's circulation dissipated, with the remnants of the storm finally dissipating on September 6, just before making landfall on Baja California.

[2] While Norma did not make landfall while tropical (even though it came close to making landfall on Baja California before dissipating), the circulation introduced unstable air into Arizona and Utah which, along with a cold front, resulted in record amounts of rainfall.

[7] While the storm was causing floods in Arizona, the lower cities of Utah were also experiencing heavy rainfall.

The most noteworthy rainfall total was recorded in Bug Creek, which experienced an estimated 6 inches (150 mm) of rain in a 24-hour period.

[1] The record stood until 1997, when the remnants of Hurricane Nora produced 11.97 inches (304 mm) of rain on the top of Harquahala Mountain.