FINAL MORNING OF RAIN - 10/18/05
The upper-level low pressure system that was located 300 nautical miles SSW of Los Angeles 24 hours ago...is now moving onshore over San Diego. Multiple bands of showers are continuing to rotate around this system. In the last 24 hours...these showers have produced between 1 to 2.5 inches of rain from the San Gabriel Mountains west to the mountains of Santa Barbara.
This morning there was a temporary lull in the shower activity over much of the region. However...2 more bands of showers are now beginning to overspread the region. The heaviest showers are now moving west through Los Angeles County. These have already produced some local street flooding in the Antelope Valley and an advisory for urban flooding has been issued for that area. These heavier showers will continue to move westward through all of Los Angeles County, Ventura County and Santa Barbara County. The forecast calls for up to an inch of rain along the south coastal sections and valleys of the counties...with local higher amounts in the mountains between 1 to 1.5 inches. Note that the flash flood watch will remain in effect for all burn areas.
Late this afternoon, the upper-level low is expected to move into Arizona...taking the rain showers and thunderstorms with it. Look for showers to end with improving conditions from the west this afternoon.
Wednesday should be much drier...but with all that moisture on the ground, expect areas of fog to be fairly widespread overnight through tomorrow morning.
Look for seasonal conditions the remainder of the week with mostly clear skies, except for the return of marine clouds and fog to the coasts by the weekend. In addition, look for a slight warming trend.
This morning there was a temporary lull in the shower activity over much of the region. However...2 more bands of showers are now beginning to overspread the region. The heaviest showers are now moving west through Los Angeles County. These have already produced some local street flooding in the Antelope Valley and an advisory for urban flooding has been issued for that area. These heavier showers will continue to move westward through all of Los Angeles County, Ventura County and Santa Barbara County. The forecast calls for up to an inch of rain along the south coastal sections and valleys of the counties...with local higher amounts in the mountains between 1 to 1.5 inches. Note that the flash flood watch will remain in effect for all burn areas.
Late this afternoon, the upper-level low is expected to move into Arizona...taking the rain showers and thunderstorms with it. Look for showers to end with improving conditions from the west this afternoon.
Wednesday should be much drier...but with all that moisture on the ground, expect areas of fog to be fairly widespread overnight through tomorrow morning.
Look for seasonal conditions the remainder of the week with mostly clear skies, except for the return of marine clouds and fog to the coasts by the weekend. In addition, look for a slight warming trend.
WET WEATHER CONTINUES - 10/17/05
An upper-level low is centered 300 nautical miles SSW of Los Angeles. The counter-clockwise circulation around this low has brought strong winds to the mountains along with rain showers and thunderstorms. Rain and thunderstorms this morning have prompted the issuance of flood warnings for the recent Harvard and Topanga burn areas. Earlier this morning, an east-west band of showers set up over the burn areas and, although individual showers are light enough not to produce immediate flash flooding and debris flows, the continuous training of showers over the same areas raises the potential for flooding to where warnings are required.
Showers are expected to diminish later this morning, but redevelop later this afternoon and tonight as the upper-level low begins to move north and east towards San Diego County. Therefore, the threat for more heavy rain will continue later today and through early Tuesday. This threat has prompted the issuance of a flash flood watch for both Ventura and Los Angeles Counties from now through mid-day Tuesday.
The storm system is expected to move into Arizona on Wednesday, taking the rain with it. Therefore, look for improving conditions from the south and west on Tuesday with sunny skies becoming more widespread on Wednesday. Snow levels are very high (above 8000 feet). Very strong winds are occuring in the mountains of Ventura and Los Angeles County this morning. Most wind gusts are in the 35-45 MPH range, but isolated areas like Warm Springs and Chilao have continued to gust above 50 MPH, occasionaly gusting as high as 70 MPH. We will stick with the wind advisory this morning, but isolated gusts above advisory criteria will be possible during the morning hours.
Showers are expected to diminish later this morning, but redevelop later this afternoon and tonight as the upper-level low begins to move north and east towards San Diego County. Therefore, the threat for more heavy rain will continue later today and through early Tuesday. This threat has prompted the issuance of a flash flood watch for both Ventura and Los Angeles Counties from now through mid-day Tuesday.
The storm system is expected to move into Arizona on Wednesday, taking the rain with it. Therefore, look for improving conditions from the south and west on Tuesday with sunny skies becoming more widespread on Wednesday. Snow levels are very high (above 8000 feet). Very strong winds are occuring in the mountains of Ventura and Los Angeles County this morning. Most wind gusts are in the 35-45 MPH range, but isolated areas like Warm Springs and Chilao have continued to gust above 50 MPH, occasionaly gusting as high as 70 MPH. We will stick with the wind advisory this morning, but isolated gusts above advisory criteria will be possible during the morning hours.
