Rain Falling in Pasadena and Altadena as Storm Arrives

Light rain was reported in Pasadena on Tuesday and early Wednesday as an atmospheric river storm moved into Southern California, according to local weather accounts and resident observations. The onset of precipitation marked a shift from overcast skies to measurable rainfall in the region.

As of 4:30 a.m., up to 1.2 inches of rain have fallen in Los Angeles County, according to one report.

At 1:44 a.m. Wednesday, the Pasadena Weather account on X (formerly Twitter) noted conditions changing to light rain with temperatures rising to 58 degrees and winds increasing to 22 mph. Earlier, at 11:31 p.m. Tuesday, a local resident posted that rain had started in Pasadena, expressing concern about the storm’s severity.

These reports, shared on social media platform X (formerly Twitter), provide real-time confirmation of rainfall in Pasadena and surrounding areas. While broader flood warnings were issued for Southern California, the localized posts specifically document rain beginning in Pasadena, with implications for nearby foothill communities Altadena and Sierra Madre.

No special media or media reports reviewed in the past 10 hours mentioned active mudflows or debris movement. The focus remained on the arrival of rain and its immediate impact on local conditions.