Jova's expansive cloud shield led to some rainfall in western states of Mexico with minor flooding occurring in Baja California Sur.

On August 31, 2023, the National Hurricane Center (NHC) began forecasting the possibility of tropical cyclogenesis off the southwest coast of Mexico.

The environment ahead of the cyclone proved exceptionally conducive to rapid intensification with ample low-level moisture, low wind shear, and high sea surface temperatures.

[8] While initially hampered by moderate wind shear early on September 5,[9] strengthening began later that day as upper-level outflow improved and deep convection blossomed over the system's center.

[11][12] This trend continued into September 6 as cloud tops deepened to −130 °F (−90 °C) and Jova's eye became more defined on infrared and visible satellite imagery.

[15] Within a 24-hour period Jova's winds increased by 90 mph (150 km/h), ranking it among the top six fastest intensification episodes in the Eastern Pacific basin on record.

[25] With the complete loss of convective activity later that day, Jova degenerated into a remnant low by 21:00 UTC marking the cessation of it being a tropical cyclone.

[27] Mexico's Servicio Meteorológico Nacional warned of heavy rains in Baja California Sur, Colima, Jalisco, Nayarit, and Sinaloa stemming from Jova's immense cloud shield.

Heavy rains in Baja California Sur swelled small streams, flooded roads, and caused some vehicles to become stranded.

While Doppler weather radar returns showed rain in the region, dryer low- to mid-level air evaporated the rainfall before it reached the ground.

[36] Waves of 5–8 ft (1.5–2.4 m) and rip currents were forecast for south-facing beaches in Los Angeles and Ventura Counties as well as the Channel Islands.

[37][38] The San Francisco Bay Area farther north faced similar risks with rip currents and breaking waves up to 8 ft (2.4 m).