The National Weather Service warned another powerful storm would slam the Southland Tuesday, with potentially heavy rain and gusty winds anticipated across the region and raised concerns of localized flooding. The NWS dialed up its previous forecast for Pasadena, now predicting heavy showers that could dump 1 to 2 inches of rain on the City of Roses.
Mountains and foothills could potentially get up to 8 inches of rain, with most areas receiving between 3 and 6, the NWS said, possibly between a half-inch and 1 inch per hour.
“Confidence is fairly high that this storm will bring significant widespread heavy rainfall to the region,” according to the NWS. “In fact, it will be a big surprise if it does not do so.”
The storm is the latest in what has been a series of “atmospheric river” events to douse the state and Southland. While rain is likely to start falling in the pre-dawn hours in Los Angeles County, the brunt of the storm is expected to hit the area late Tuesday afternoon through late Tuesday night.
“There will likely be widespread and significant roadway flooding across the region from this storm, but there may also be more significant flooding, with mud and debris flows, rock slides, and some flooding of creeks and rivers,” according to the NWS.
A flood watch will be in effect from Tuesday morning through Wednesday morning in Pasadena. Forecasters warned that street flooding is possible.
Sand and sandbags are available for pickup at Pasadena Fire Stations 37, 3430 E. Foothill Blvd. and 38, 1150 Linda Vista Ave., The limit is 10 bags per resident. Fire personnel are available to assist with loading if they’re not responding to a call.
Dry weather is expected to return Wednesday night through Thursday night, with another smaller system sliding into the area by Friday and lasting into the weekend, although the bulk of that storm will likely remain to the north, resulting in a mostly dry but cool weekend.
Here is the National Weather Service forecast for Pasadena:
Tuesday: Rain, mainly after 11 a.m. High near 60. Southeast wind 5 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tuesday Night: Rain. The rain could be heavy at times. Low around 53. Southeast wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Wednesday: Rain. High near 62. Southeast wind 5 to 10 mph becoming south southwest in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night: A 20 percent chance of showers before 11 p.m. Mostly cloudy, with a low around 46. Southwest wind 5 to 10 mph becoming northwest after midnight.
Thursday: Partly sunny, with a high near 62.
Thursday Night: Mostly cloudy, with a low around 47.
Friday: Partly sunny, with a high near 65.
Friday Night: Mostly cloudy, with a low around 49.
Saturday: Partly sunny, with a high near 66.
Saturday Night: A slight chance of rain. Mostly cloudy, with a low around 49.
Sunday: A chance of rain. Mostly cloudy, with a high near 62.
Sunday Night: A slight chance of rain. Mostly cloudy, with a low around 48.
Monday: A slight chance of rain. Mostly cloudy, with a high near 62.