Pasadena Braces for Three-Day Rainfall

Pasadena is likely in for three more days of rain, with the National Weather Service predicting a 20% chance of rain late Sunday, 70% on Monday, 60% on Tuesday and 40% on Wednesday. The city is expected to see less impact than many other parts of Los Angeles County.

The storm system, affecting Southwestern California from this afternoon through Tuesday, will bring periods of heavy rain, gusty winds, cooler temperatures, and a slight chance of thunderstorms.

Rainfall totals of 2 to 5 inches across valleys are expected through Wednesday, with peak rainfall rates of 0.5 to 1 inch per hour likely. The highest rates are anticipated across south-facing mountain slopes/foothills and any thunderstorms that form.

A Flood Watch for Pasadena will be in effect from late this afternoon through Wednesday morning.

LA County, while projected to see lower rainfall totals compared to Ventura County northward, remains at an elevated risk level due to last week’s heavy rains. Additional flooding/mudslide activity is likely in the coming days.

Temperatures are not expected to change significantly once the rain starts, with highs lingering around the low to mid-60s. This is typical for rain events in February.

Dry weather with warming temperatures is expected to follow on Thursday and Friday, bringing temperatures to near normal for this time of year by Friday.

Here is the National Weather Service forecast for Pasadena issued at 309 a.m. Sunday morning

Today: A 20 percent chance of rain after 10:00 a.m.. Partly sunny, with a high near 62. South southeast wind 5 to 10 mph becoming southwest in the afternoon.

Tonight: A 50 percent chance of rain. Mostly cloudy, with a low around 50. Southeast wind around 5 mph. New precipitation amounts between a tenth and quarter of an inch possible.

Washington’s Birthday: Rain likely. Cloudy, with a high near 58. South wind 10 to 15 mph, with gusts as high as 20 mph. The chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

Monday Night: Rain likely. Cloudy, with a low around 50. East southeast wind 5 to 10 mph. The chance of precipitation is 70%. New precipitation amounts between a half and three-quarters of an inch possible.

Tuesday: Rain likely. Mostly cloudy, with a high near 59. Southeast wind 5 to 10 mph. The chance of precipitation is 60%. New precipitation amounts between a half and three-quarters of an inch possible.

Tuesday Night: Rain likely. Mostly cloudy, with a low around 48. The chance of precipitation is 70%.

Wednesday: A 40% chance of showers before 10 a.m. Partly sunny, with a high near 62.

Wednesday Night: Partly cloudy, with a low around 45.

Thursday: Mostly sunny, with a high near 66.

Thursday Night: Partly cloudy, with a low around 46.

Friday: Mostly sunny, with a high near 70.

Friday Night: Partly cloudy, with a low around 48.

Saturday: A slight chance of rain. Partly sunny, with a high near 67.