[7] Based on the improved appearance on satellite imagery, it is estimated the depression intensified into Tropical Storm Adrian at 0000 UTC on June 8, twelve hours after formation.
[9] By nightfall, the eye-like feature developed into a central dense overcast (CDO), and at around 0000 UTC on June 9, the NHC upgraded Adrian to a minimal hurricane as it attained sustained winds of 80 mph (130 km/h).
[1][10] Later that day, a well-defined eye formed beneath the CDO and the surrounding cloud tops reached below −80 °C (−112 °F), indicating intensification is present.
[14] Throughout most of June 9, Adrian began transitioning into an annular hurricane, displaying a large and circular eye around 25 miles (40 km) in diameter, devoid of any convective banding.
[15] Contrary to previous predictions by the NHC, Adrian continued to intensify, reaching its peak intensity at around 0000 UTC on June 10 while located about 320 mi (515 km) south-southwest of Manzanillo, Mexico.
[17] By then, Adrian also began moving into a more stable environment with stronger westerly wind shear, which is highly unfavorable for the sustaining tropical cyclones.
[19] Steered by a low-to-mid-level ridge over the northeastern Pacific, Adrian recurved to the west, traversing sea surface temperatures cooler than 26.5 °C (79.7 °F).
[19][20] Deteriorating faster than anticipated due to an unexpected increase in wind shear, Adrian weakened back into a tropical storm around 1800 UTC on June 11.
[23] Weakening resumed and Adrian degenerated into a tropical depression six hours later,[24] and subsequently decaying into a remnant low-pressure area at around 1200 UTC on June 12 while located about 585 mi (940 km) southwest of the southernmost tip of Baja California peninsula.
[1][25][26] Devoid of any convection, the remnant low of Adrian continued to move west for roughly two days, until gradual dissipation, as the low-level circulation opened up into a surface though.
[29] Plumes of moisture from the outer rainbands of Adrian caused heavy rain in the Mexican states of Oaxaca, Guerrero and Michoacán.