Satellite intensity estimates gradually increased, and on July 23, the depression intensified into Tropical Storm Alex.

In the province of Zhejiang, Alex damaged or destroyed over 200 fishing boats, wiped out 22 bridges, snapped 32 power lines, and flooded four reservoirs.

Across South Korea, the storm dumped heavy rainfall, with daily totals of 300 mm (12 in) in some places, triggering flooding and landslides.

At 19:30 UTC, the JTWC issued a Tropical Cyclone Formation Alert despite satellite imagery only detecting a broad, ill-defined low-level circulation, with a minimum barometric pressure of 1005 mbar (29.68 inHg).

The next morning the JTWC declared Alex a typhoon while also estimating that the storm attained its peak intensity of 120 km/h (75 mph).

[3] Although satellite images continued to depict a warm spot, suggesting the presence of an eye,[2] both the JMA and JTWC estimated that Alex fell below typhoon intensity on July 26;[7] however, according to the JMA, Alex briefly re-intensified back to a typhoon that evening.

[3] Alex turned north in response to the aforementioned front, passing 55 km (34 mi) east of Taipei.

Interaction with the high terrain of Taiwan caused Alex to deflect west, striking Wenzhou as a weakening tropical storm[2] on the evening of July 27.

Even though Alex failed to regenerate according to the JTWC,[2] the JMA continued to track the system as a tropical depression through August 2.

The storm damaged or demolished more than 200 fishing boats, wiped out 22 bridges, snapped 32 power lines, and flooded four reservoirs.

[10] Throughout the suburbs of Shanghai, north of where the storm moved ashore 32 individuals sustained injuries and 400 homes were damaged or destroyed.