Los Angeles, CA – Southern Californians are being advised to soak up the sunshine early this week, as it will be short-lived. With the region still dealing with saturated ground from last week’s atmospheric river, meteorologists say another Pacific storm system is on track to move in, delivering widespread rainfall and a soggy send-off to 2025.
According to the National Weather Service, the incoming storm will begin impacting parts of the state by Tuesday evening, with rainfall gradually spreading eastward and intensifying through Wednesday night, New Year’s Eve, and New Year’s Day.
Rain Timeline: When the Storm Arrives
Forecasters report that rain will first develop along the Central Coast on Tuesday evening, then steadily push into Southern California overnight. By Wednesday, much of the region — including metro Los Angeles — will be under increasing rain chances.
The heaviest rainfall is expected to occur Wednesday night through Thursday, coinciding with New Year’s Eve celebrations and New Year’s Day events. During this period, rainfall rates are forecast to peak between 0.25 and 0.50 inches per hour, with the possibility of isolated heavier downpours.
Meteorologists emphasized that while this storm is significant, it should not be as intense as the last one.
“This will be the period of heaviest rainfall with this storm, but likely still at least 50% lighter than the last event,” weather officials stated.
Impacts on New Year’s Eve Celebrations
The approaching storm has already prompted changes to major holiday plans across the region. The City of Fullerton announced the cancellation of its large outdoor New Year’s Eve celebration, citing safety concerns related to weather conditions.
City officials explained that rainy and potentially hazardous conditions could pose risks for public safety, attractions, entertainment, and fireworks, making it difficult to proceed with the event as planned.
Other cities may follow suit depending on how forecast conditions evolve over the next 48 hours.
Rainfall Totals and Flooding Concerns
Total rainfall amounts from this system are projected to range between 1.25 and 1.5 inches through New Year’s Day, according to forecast models. While these totals may not sound extreme, the concern lies in the already saturated soil, which increases the risk for urban flooding, ponding on roadways, and minor mudslides in vulnerable areas.
Residents in hillside and burn scar regions are encouraged to remain alert, especially during periods of heavier rain late Wednesday night.
Rose Parade Attendees Should Expect Rain
Those planning to attend the iconic Rose Parade in Pasadena should prepare for wet conditions. The National Weather Service says the likelihood of rain during the parade — including overnight hours when spectators traditionally camp out — is extremely high.
“The chances of a wet New Year’s Parade are 80% to 90% at this point,” forecasters said.
Notably, the last time rain fell on the Rose Parade was in 2006, making this potential rainfall a rare occurrence for one of Southern California’s most celebrated traditions.
Brief Break, Then Another Round of Rain
After the main system moves through, forecasters expect a brief break in steady rainfall from Thursday night into Friday, though scattered light showers may linger. However, the dry window won’t last long.
Another cold front from the northwest is expected to approach the region, bringing additional rain late Friday into Saturday.
“Round two moves into the area Friday into Saturday,” said KTLA weather anchor Kacey Montoya, noting that the exact rainfall amounts with the second system remain uncertain.
What Residents Should Do Now
Meteorologists recommend that residents:
- Monitor local weather updates closely
- Allow extra travel time during wet conditions
- Secure outdoor items ahead of rain and wind
- Prepare umbrellas and rain gear for holiday events
With multiple systems lined up, Southern California is poised for a wet transition into the New Year.
Are your New Year’s Eve or Rose Parade plans changing because of the rain? Do you welcome the wet weather, or are you hoping it clears out quickly?
Share your thoughts, plans, and weather photos in the comments below and let us know how the storm is affecting your area.
