Mostly Sunny But Quite Cold Weather Moves Into Pasadena

A winter storm warning is in effect Thursday until 8 a.m. for parts of Los Angeles County and the San Gabriel Mountains, and a flash flood warning has been issued as the tail end of week-long storms makes it way out of the region.

There was a much-needed break from the rain Wednesday, but forecasters said another small storm cell will push through the area before the area dries out for the weekend.

National Weather Service forecasters said a fast-moving front will make its way into the area, but it “should be in and out before midnight tonight.” The system could generate some pockets of heavy rain, with most areas receiving a quarter- to half-inch of precipitation, possibly more in foothill and mountain areas.

“The rain amounts and intensities with this system wouldn’t normally cause much concern, and for most urban areas issues should be minimal and confined to just standard minor road flooding,” according to the NWS.

“Friday through at least Tuesday will be dry and warmer, but still cooler than normal,” according to the NWS.

The upbeat forecast is a welcome end to a relentless storm that dropped rain nearly non-stop from Sunday into Tuesday, shattering multiple rainfall records in the Southland.

Gov. Gavin Newsom declared a state of emergency in eight counties in the state while the storm was raging, including Los Angeles and Orange counties.

Los Angeles County later declared its own state of emergency, and Los Angeles Mayor Karen Bass on Monday also signed a local emergency declaration.

The emergency proclamations will help expedite procurement of vital supplies and resources, deployment of disaster service workers and the use of emergency protective measures such as evacuation orders, officials said.

“We’ll get any help on the way as soon as you guys request it, so just let me know,” President Joe Biden told Bass in a telephone call during her late Monday afternoon briefing.

Here is the National Weather Service forecast for the Pasadena area, as of 3:18 a.m. Thursday morning:

Today: Mostly sunny, with a high near 57. West southwest wind 5 to 10 mph.

Tonight: Partly cloudy, with a low around 44. South wind 5 to 10 mph becoming east in the evening.

Friday: Mostly sunny, with a high near 58. East wind around 5 mph becoming south southwest in the afternoon.

Friday Night: Mostly clear, with a low around 41. Northwest wind around 5 mph.

Saturday: Sunny, with a high near 61. Northwest wind around 10 mph, with gusts as high as 15 mph.

Saturday Night: Clear, with a low around 39.

Sunday: Sunny, with a high near 64.

Sunday Night: Mostly clear, with a low around 41.

Monday: Sunny, with a high near 65.

Monday Night: Mostly clear, with a low around 42.

Tuesday: Sunny, with a high near 66.