Sunny skies and warm temperatures Friday will give way to stormy weather early next week, forecasters said. The National Weather Service in Los Angeles/Oxnard reported that a strong Pacific storm system is expected to arrive Sunday night, bringing heavy rain, thunderstorms, mountain snow and strong winds to Pasadena and surrounding areas.
Friday will be clear and mild, with highs near 73 degrees and light winds shifting from northeast to southwest. Tonight will remain clear, with lows around 46 degrees.
Saturday will be mostly sunny with highs near 71 degrees. Clouds will increase by evening as the storm system approaches. Sunday will be cooler, with highs near 66 degrees and gusty winds up to 15 mph. Rain is likely late Sunday night, forecasters said.
The heaviest rainfall is expected Monday and Monday night, with totals of 1 to 3 inches possible in valleys and up to 5 inches in the mountains. Thunderstorms are possible, and forecasters warned of flooding and debris flows in burn areas. Showers will continue Tuesday and Wednesday, though lighter in intensity. Thursday is expected to be cold but mostly dry, with highs near 59 degrees.
The National Weather Service cautioned residents to prepare for flooding, debris flows and possible travel disruptions. Interstate 5 and other mountain routes may experience closures due to snow.
Here is the Pasadena forecast from the National Weather Service as of 3:47 a.m. Friday:
Today: Sunny, with a high near 73. North northeast wind 5 to 10 mph becoming west southwest in the afternoon.
Tonight: Clear, with a low around 46. East northeast wind around 5 mph becoming calm.
Saturday: Mostly sunny, with a high near 71. Calm wind becoming south around 5 mph in the morning.
Saturday Night: Mostly cloudy, with a low around 48. South wind around 5 mph.
Sunday: Mostly cloudy, with a high near 66. South wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday Night: Rain likely, mainly after 4:00 a.m. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Washington’s Birthday: Rain and possibly a thunderstorm. High near 55. Chance of precipitation is 90%.
Monday Night: Rain and possibly a thunderstorm. Cloudy, with a low around 45.
Tuesday: Rain. Cloudy, with a high near 55.
Tuesday Night: Rain, mainly before 4:00 a.m. Mostly cloudy, with a low around 44.
Wednesday: A chance of rain. Partly sunny, with a high near 55.
Wednesday Night: A chance of rain. Mostly cloudy, with a low around 41.
Thursday: A chance of rain. Partly sunny, with a high near 59.
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