Henriette (2019)

A small tropical cyclone formed from a tropical wave that crossed into the eastern North Pacific and developed into a tropical depression about 240 nautical miles south of the southern tip of Baja California Sur, Mexico around 0000 UTC on 12 August 2019. The system strengthened into Tropical Storm Henriette about six hours later while passing north of Socorro Island. Henriette moved generally west-northwestward and westward over a period of roughly three days, weakening rapidly after peak and degenerating to a remnant low by 1200–1800 UTC 13 August and dissipating by 0600 UTC 15 August about 450 n mi west-southwest of the southern tip of Baja California Sur.

Henriette did not make any landfalls. Its closest approach to land was when it passed north of Socorro Island early on 12 August; there were no tropical cyclone watches or warnings issued.

The storm’s peak intensity was estimated at 40 knots (46 mph) with a minimum central pressure of 1003 mb at 1200 UTC 12 August. That intensity corresponds to a weak tropical storm (below hurricane strength).

There were no reports of storm surge or measured coastal inundation attributed to Henriette, and no reported observations of tropical-storm-force winds at ships or on land. Because the circulation remained offshore and was compact, there were also no notable rainfall reports tied to the cyclone in populated areas.

No casualties or damage were reported in association with Henriette. The cyclone’s formation was relatively poorly forecast at long lead times, which is common for short-lived weak systems, but the limited official track and intensity forecasts that verified had smaller-than-average errors for the short period the storm existed.