UPDATE: SpaceX scrubs scheduled launch due to approaching Hurricane Hilary.

VANDENBERG SPACE FORCE BASE, California — Despite the multiple launch options provided for a Falcon 9 launch of 21 Starlink satellites, all of those options have been scrubbed ahead of the arrival of Hurricane Hilary.

Tropical Storm Hilary strengthened into a hurricane Thursday, with forecasters warning it could potentially bring devastating rainfall and high winds to Southern California this weekend.

“Hilary is forecast by AccuWeather’s hurricane experts to become a major (Category 3) hurricane and peak as a Category 4 on the Saffir-Simpson Hurricane Wind Scale while spinning just off the southern tip of Mexico’s Baja peninsula this weekend.”

The last tropical storm to impact the state was 84 years ago, according to official records.

Under some forecast scenarios, Tropical Storm Hilary could bring a year’s worth of rain to typically dry locations in just two to three days, which would cause extensive flooding.

The NWS forecast office in Phoenix said the amount of atmospheric water vapor surging into the Southwest ahead of the storm may reach levels “almost never experienced this time of year.”

The National Hurricane Center said Hilary was about 475 miles south of Cabo San Lucas, Mexico, as of 5 p.m. Thursday ET, with maximum sustained winds of 110 mph. While Hilary is likely to weaken as it travels northward, it could bring heavy rainfall to the southwestern United States, along with large swells and high surf along the coast.

When the launch takes place this is the 15th flight for the first stage booster supporting this mission, which previously launched Crew-1, Crew-2, SXM-8, CRS-23, IXPE, Transporter-4, Transporter-5, Globalstar FM15, ISI EROS C-3, and five Starlink missions. Following stage separation, the first stage will land on the Of Course I Still Love You droneship, which will be stationed in the Pacific Ocean.

A live webcast of this mission will begin about five minutes prior to liftoff

PREVIOUSLY: SpaceX is targeting Thursday, August 17 at 1:42 a.m. PT (8:42 UTC) for a Falcon 9 launch of 21 Starlink satellites to low-Earth orbit from Space Launch Complex 4E (SLC-4E) at Vandenberg Space Force Base in California.

If needed, two additional opportunities are available at 2:33 a.m. PT (9:33 UTC) and 3:26 a.m. PT (10:26 UTC). Two backup opportunities are also currently available on Friday, August 18 at 12:30 a.m. (7:30 UTC) and 1:20 a.m. PT (8:20 UTC).

This is the 15th flight for the first stage booster supporting this mission, which previously launched Crew-1, Crew-2, SXM-8, CRS-23, IXPE, Transporter-4, Transporter-5, Globalstar FM15, ISI EROS C-3, and five Starlink missions. Following stage separation, the first stage will land on the Of Course I Still Love You droneship, which will be stationed in the Pacific Ocean.

A live webcast of this mission will begin about five minutes prior to liftoff