What do you know
The most important rain of the season in Los Angeles arrives this week. The brunt of the storm has brought extensive rain since Thursday morning, with peak intensity expected later that day. Flash flood clocks will be in effect in most parts of the area from 1pm on Thursday to 4am on Friday. Torrential rains can cause slides on hillsides that have been stripped of vegetation by wildfires in Southern California.
Flash flood clocks will take effect later this week, with strong storms bringing significant rainfall to the region in broad areas of Los Angeles and Southern California.
Rain begins Thursday afternoon on Wednesday before flash flood monitoring that continues throughout the night in most of the Los Angeles area. High rainfall rates can cause flash floods and slides in vulnerable burn scar areas such as Altadena and Pallisade in the Pacific Ocean.
Rainfall timeline
Clouds are expected to cover most of the region starting Wednesday, with half an inch of rain available. The brunt of the storm arrived Thursday, with widespread rain potentially affecting the area for about 36 hours. The rain will turn into a shower on Friday and decrease that afternoon.
Flash flood clocks will be in effect in most parts of the area from 1pm on Thursday to 4am on Friday. Flash flood watches show conditions that can lead to flash flooding. Flash flood warnings that could be issued during the storm indicate that flooding is occurring or imminent.
Wednesday: Stable light to medium rain and mountain snow. Thursday morning: extensive rain, heavy side showers. Thursday afternoon and evening: peak rain intensity, the risk of flood problems is the highest, burning the flow of scar debris. A gust of wind is predicted. Friday: prolonged showers and snow in the mountains.
Storms can drop 1.5 to 3 inches across most parts of the area, and more than 3 inches into coastal hills and mountains.
Snow levels were about 5,000 feet on Wednesday and rose to 7,000 feet on Thursday before returning to about 5,000 feet. The higher the altitude, the more likely you will see several feet of snow.
High temperatures are in your 50s every day during the storm. This is about 5-10 degrees, the usual.
The area is in severe drought to extreme drought after a dry start to Southern California’s rainy season. After two seasons of above average rainfall, a month of dry spells were covered in dry brushes to fuel wildfires.
The average annual rainfall in downtown LA is 14.25. During the 2022-2023 rainy season, 28.40 inches of rain fell on the area and 25.19 inches of rain from 2023-2024. So far, downtown LA has been well below average.
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