Southland Overview

* WHAT...West winds 15 to 25 mph with gusts 30 to 40 mph expected. * WHERE...Orange County Coastal Areas, Orange County Inland Areas, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Coastal Areas, San Diego County Valleys, and Santa Ana Mountains and Foothills. * WHEN...From noon to 8 PM PDT Thursday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.More

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...A portion of Southwest California, including the following areas, Orange County Coastal Areas, Orange County Inland Areas, Riverside County Mountains, San Bernardino County Mountains, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Coastal Areas, San Diego County Mountains, San Diego County Valleys and Santa Ana Mountains and Foothills. * WHEN...From 10 PM PDT this evening through Thursday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Debris flow are possible near recent burn scars. Areas of flooding possible in the mountains below the snow level. * ADDITIONAL DETAILS... - An atmospheric river will generate moderate to heavy rainfall tonight through Thursday afternoon. Rainfall rates of 0.50 to 0.75 inch per hour are expected, locally up to one inch per hour possible in the mountains below the snow level and where thunderstorms develop. This watch includes the following burn scars: Bridge, Line, and Airport. The heaviest rainfall for late tonight through Thursday morning is expected with the passage of the cold front with another round of locally heavy rain possible Thursday afternoon with any thunderstorms that develop. - https://www.weather.gov/safety/floodMore

* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Antelope Valley. * WHEN...Until 6 AM PDT Thursday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.More

* WHAT...Southwest winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Eastern Santa Monica Mountains Recreational Area, Santa Susana Mountains, and Western Santa Monica Mountains Recreational Area. * WHEN...From 10 PM this evening to 6 AM PDT Thursday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.More

* WHAT...Flash flooding and debris flows caused by excessive rainfall are possible. * WHERE...Much of Los Angeles and Ventura Counties (below 5,000 to 6,000 feet), and the Santa Barbara County South Coast including the Santa Ynez Range. Higher concern for recent burn scars within the watch area. * WHEN...From this evening through Thursday afternoon. * IMPACTS...Potential for heavy rain over the burn scars may trigger hazardous and damaging flooding and debris flows. Flooding may also occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Peak rates of 0.5 to 0.75 inch/hr are possible, with a 10 to 20 percent chance rates of 1.0+ inch/hr (due to thunderstorms or heavy showers). - http://www.weather.gov/safety/floodMore

* WHAT...Heavy snow possible with 12 to 24 inches possible above 6500-7000 feet, 6-12 inches 5500-7000, 1-5 inches 4000-5500 feet, and up to an inch as low as 3000 feet. Winds could gust as high as 50 mph. * WHERE...The mountains of Los Angeles, Ventura, and Santa Barbara Counties. * WHEN...From 4 PM this afternoon to 5 AM PDT Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Wednesday evening and Thursday morning commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...The heaviest snow is expected to be tonight into Thursday morning. A second, and much weaker system will move into the mountains Friday into Friday night generating much lighter accumulations.More