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063 FNUS86 KLOX 251632 FWLLOX ECCDA Discussions National Weather Service Los Angeles/Oxnard CA 932 AM PDT Sun Jul 25 2021 ECC029-261045- Los Padres National Forest- Discussion for Vandenberg ECC Dispatch 932 AM PDT Sun Jul 25 2021 ...Discussion from Los Angeles/Oxnard... ...INCREASING MONSOONAL MOISTURE WITH A THREAT OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS THIS AFTERNOON THROUGH MONDAY... ...SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS ACROSS THE MOUNTAINS AND DESERTS ON TUESDAY... An upper level high pressure system centered over Nevada will continue to bring moist easterly flow aloft across Southwest California through Monday. By later this afternoon and evening, there will be a 20 percent chance of showers and thunderstorms across Los Angeles county. An upper level low pressure system with deeper monsoonal moisture and elevated instability will move westward from the desert Southwest into Southwest California later tonight into Monday. This system will bring a threat of more widespread showers and a slight chance of thunderstorms to areas south of Point Conception from later tonight through Monday, with a slight chance of showers and thunderstorms reaching north of Point Conception by Monday afternoon and evening. Due to the ample moisture associated with this system, any thunderstorms that develop later tonight through Monday will likely bring wetting rains and gusty winds, however there is always the threat of isolated dry lighting strikes on the periphery of storms. Rainfall amounts are expected to be widely varying, but are generally expected to remain below 0.50 inches. Locally higher rainfall totals are possible across the mountains of Los Angeles and Ventura counties as well as the Antelope Valley. These areas will have the greatest threat for brief heavier downpours, bringing a slight risk for flash flooding on Monday. There will generally be a drying trend on Tuesday, however lingering monsoonal moisture and instability will bring a slight chance of afternoon thunderstorms across the mountains of Los Angeles and Ventura counties as well as the Antelope Valley. ...Discussion from Monterey... ...Isolated thunderstorms possible Monday into early Tuesday... Stagnant high pressure will remain in control across the region through the next several days. The marine layer will remain along the coast at around 1000-1400 feet with seasonable conditions featuring afternoon seabreezes at the lower elevations. Warm and dry conditions will persist for the interior and higher elevations. Otherwise, increasing monsoonal moisture will arrive beginning Sunday. A second deeper monsoonal surge arrives Monday into Tuesday and will bring a slight risk of showers and thunderstorms. Any thunderstorms that develop are expected to be wet however any lightning will be capable of striking outside the rain shaft. Warmer and drier conditions then develop by midweek and last through the end of the month. Note : All winds are 20-foot Winds Unless otherwise specified. Thunderstorms imply strong, gusty and erratic winds. $$ ECC028-261045- Santa Barbara County excluding Los Padres National Forest- Discussion for Santa Barbara ECC Dispatch 932 AM PDT Sun Jul 25 2021 ...INCREASING MONSOONAL MOISTURE WITH A THREAT OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS THIS AFTERNOON THROUGH MONDAY... ...SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS ACROSS THE MOUNTAINS AND DESERTS ON TUESDAY... An upper level high pressure system centered over Nevada will continue to bring moist easterly flow aloft across Southwest California through Monday. By later this afternoon and evening, there will be a 20 percent chance of showers and thunderstorms across Los Angeles county. An upper level low pressure system with deeper monsoonal moisture and elevated instability will move westward from the desert Southwest into Southwest California later tonight into Monday. This system will bring a threat of more widespread showers and a slight chance of thunderstorms to areas south of Point Conception from later tonight through Monday, with a slight chance of showers and thunderstorms reaching north of Point Conception by Monday afternoon and evening. Due to the ample moisture associated with this system, any thunderstorms that develop later tonight through Monday will likely bring wetting rains and gusty winds, however there is always the threat of isolated dry lighting strikes on the periphery of storms. Rainfall amounts are expected to be widely varying, but are generally expected to remain below 0.50 inches. Locally higher rainfall totals are possible across the mountains of Los Angeles and Ventura counties as well as the Antelope Valley. These areas will have the greatest threat for brief heavier downpours, bringing a slight risk for flash flooding on Monday. There will generally be a drying trend on Tuesday, however lingering monsoonal moisture and instability will bring a slight chance of afternoon thunderstorms across the mountains of Los Angeles and Ventura counties as well as the Antelope Valley. $$ ECC031-261045- Angeles National Forest- Discussion for Lancaster ECC Dispatch 932 AM PDT Sun Jul 25 2021 ...INCREASING MONSOONAL MOISTURE WITH A THREAT OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS THIS AFTERNOON THROUGH MONDAY... ...SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS ACROSS THE MOUNTAINS AND DESERTS ON TUESDAY... An upper level high pressure system centered over Nevada will continue to bring moist easterly flow aloft across Southwest California through Monday. By later this afternoon and evening, there will be a 20 percent chance of showers and thunderstorms across Los Angeles county. An upper level low pressure system with deeper monsoonal moisture and elevated instability will move westward from the desert Southwest into Southwest California later tonight into Monday. This system will bring a threat of more widespread showers and a slight chance of thunderstorms to areas south of Point Conception from later tonight through Monday, with a slight chance of showers and thunderstorms reaching north of Point Conception by Monday afternoon and evening. Due to the ample moisture associated with this system, any thunderstorms that develop later tonight through Monday will likely bring wetting rains and gusty winds, however there is always the threat of isolated dry lighting strikes on the periphery of storms. Rainfall amounts are expected to be widely varying, but are generally expected to remain below 0.50 inches. Locally higher rainfall totals are possible across the mountains of Los Angeles and Ventura counties as well as the Antelope Valley. These areas will have the greatest threat for brief heavier downpours, bringing a slight risk for flash flooding on Monday. There will generally be a drying trend on Tuesday, however lingering monsoonal moisture and instability will bring a slight chance of afternoon thunderstorms across the mountains of Los Angeles and Ventura counties as well as the Antelope Valley. $$ ECC024-261045- San Luis Obispo County- Discussion for San Luis Obispo ECC Dispatch 932 AM PDT Sun Jul 25 2021 ...INCREASING MONSOONAL MOISTURE WITH A THREAT OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS THIS AFTERNOON THROUGH MONDAY... ...SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS ACROSS THE MOUNTAINS AND DESERTS ON TUESDAY... An upper level high pressure system centered over Nevada will continue to bring moist easterly flow aloft across Southwest California through Monday. By later this afternoon and evening, there will be a 20 percent chance of showers and thunderstorms across Los Angeles county. An upper level low pressure system with deeper monsoonal moisture and elevated instability will move westward from the desert Southwest into Southwest California later tonight into Monday. This system will bring a threat of more widespread showers and a slight chance of thunderstorms to areas south of Point Conception from later tonight through Monday, with a slight chance of showers and thunderstorms reaching north of Point Conception by Monday afternoon and evening. Due to the ample moisture associated with this system, any thunderstorms that develop later tonight through Monday will likely bring wetting rains and gusty winds, however there is always the threat of isolated dry lighting strikes on the periphery of storms. Rainfall amounts are expected to be widely varying, but are generally expected to remain below 0.50 inches. Locally higher rainfall totals are possible across the mountains of Los Angeles and Ventura counties as well as the Antelope Valley. These areas will have the greatest threat for brief heavier downpours, bringing a slight risk for flash flooding on Monday. There will generally be a drying trend on Tuesday, however lingering monsoonal moisture and instability will bring a slight chance of afternoon thunderstorms across the mountains of Los Angeles and Ventura counties as well as the Antelope Valley. $$ ECC032-261045- Ventura County excluding Los Padres National Forest- Discussion for Ventura ECC Dispatch 932 AM PDT Sun Jul 25 2021 ...INCREASING MONSOONAL MOISTURE WITH A THREAT OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS THIS AFTERNOON THROUGH MONDAY... ...SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS ACROSS THE MOUNTAINS AND DESERTS ON TUESDAY... An upper level high pressure system centered over Nevada will continue to bring moist easterly flow aloft across Southwest California through Monday. By later this afternoon and evening, there will be a 20 percent chance of showers and thunderstorms across Los Angeles county. An upper level low pressure system with deeper monsoonal moisture and elevated instability will move westward from the desert Southwest into Southwest California later tonight into Monday. This system will bring a threat of more widespread showers and a slight chance of thunderstorms to areas south of Point Conception from later tonight through Monday, with a slight chance of showers and thunderstorms reaching north of Point Conception by Monday afternoon and evening. Due to the ample moisture associated with this system, any thunderstorms that develop later tonight through Monday will likely bring wetting rains and gusty winds, however there is always the threat of isolated dry lighting strikes on the periphery of storms. Rainfall amounts are expected to be widely varying, but are generally expected to remain below 0.50 inches. Locally higher rainfall totals are possible across the mountains of Los Angeles and Ventura counties as well as the Antelope Valley. These areas will have the greatest threat for brief heavier downpours, bringing a slight risk for flash flooding on Monday. There will generally be a drying trend on Tuesday, however lingering monsoonal moisture and instability will bring a slight chance of afternoon thunderstorms across the mountains of Los Angeles and Ventura counties as well as the Antelope Valley. $$ ECC030-261045- Los Angeles County excluding Angeles National Forest- Discussion for Los Angeles ECC Dispatch 932 AM PDT Sun Jul 25 2021 ...INCREASING MONSOONAL MOISTURE WITH A THREAT OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS THIS AFTERNOON THROUGH MONDAY... ...SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS ACROSS THE MOUNTAINS AND DESERTS ON TUESDAY... An upper level high pressure system centered over Nevada will continue to bring moist easterly flow aloft across Southwest California through Monday. By later this afternoon and evening, there will be a 20 percent chance of showers and thunderstorms across Los Angeles county. An upper level low pressure system with deeper monsoonal moisture and elevated instability will move westward from the desert Southwest into Southwest California later tonight into Monday. This system will bring a threat of more widespread showers and a slight chance of thunderstorms to areas south of Point Conception from later tonight through Monday, with a slight chance of showers and thunderstorms reaching north of Point Conception by Monday afternoon and evening. Due to the ample moisture associated with this system, any thunderstorms that develop later tonight through Monday will likely bring wetting rains and gusty winds, however there is always the threat of isolated dry lighting strikes on the periphery of storms. Rainfall amounts are expected to be widely varying, but are generally expected to remain below 0.50 inches. Locally higher rainfall totals are possible across the mountains of Los Angeles and Ventura counties as well as the Antelope Valley. These areas will have the greatest threat for brief heavier downpours, bringing a slight risk for flash flooding on Monday. There will generally be a drying trend on Tuesday, however lingering monsoonal moisture and instability will bring a slight chance of afternoon thunderstorms across the mountains of Los Angeles and Ventura counties as well as the Antelope Valley. $$