Land Management Forecasts
Issued by NWS Los Angeles, CA
Issued by NWS Los Angeles, CA
762 FNUS86 KLOX 311622 FWLLOX ECCDA Discussions National Weather Service Los Angeles/Oxnard CA 922 AM PDT Sun Aug 31 2025 ECC029-011030- Los Padres National Forest- Discussion for Vandenberg ECC Dispatch 922 AM PDT Sun Aug 31 2025 ...Discussion from Monterey... ...ELEVATED FIRE WEATHER THREAT IN THE INTERIOR MOUNTAINS THROUGH THE WEEKEND DUE TO LOW RH AND MODERATE AFTERNOON BREEZES... Large scale sinking air, compressional warming and drying aloft, a strong low level temperature inversion coupled with diurnal late August solar warming will continue to produce hot and dry conditions over the interior today and Monday. Conditions remain cooler along the immediate coast due to a shallow marine layer and generally light to locally moderate afternoon sea breezes. Above the shallow marine layer very low daytime humidities and poor overnight recoveries have persisted just away from the immediate coast. Winds remain onshore, but breezy afternoon winds will elevate the fire weather threat in the interior mountains, especially through favored gaps and passes. Note : All winds are 20-foot Winds Unless otherwise specified. Thunderstorms imply strong, gusty and erratic winds. ...Discussion from Los Angeles/Oxnard... ...WARMING AND DRYING TREND THROUGH HOLIDAY WEEKEND WITH ELEVATED FIRE WEATHER CONDITIONS ACROSS INTERIOR INCLUDING RISK OF LARGE PLUME DOMINATED FIRES... ...POTENTIAL INCREASE IN MONSOONAL MOISTURE AND INSTABILITY WILL BRING THREAT OF THUNDERSTORMS AND ENHANCED RISK OF LARGE PLUME DOMINATED FIRES LATE MONDAY NIGHT THROUGH FRIDAY... Temperatures will warm today through Tuesday as high pressure aloft reestablishes and builds back into the Four Corners Region. The peak of the heat will be Monday through Wednesday, when highs of 95 to 106 will be common across the valleys, lower mountains, and deserts. The hotter temperatures combined with increased instability will bring deeper mixing heights which are expected to peak Monday through Wednesday at 12,000 to 18,000 feet across the interior. As a result, there is an elevated risk for large plume dominated fires across the interior. Humidities between 10 and 25 percent will be common over the warmest valleys and mountains through Tuesday, then potential humidity increase by Wednesday due to an influx of monsoonal moistures. Increasing mid level moisture associated with an upper level disturbance will bring a slight chance of showers and thunderstorms by late Monday night into Tuesday morning across LA/Ventura counties. From Tuesday afternoon through Friday, the focus will be more traditional mountain/desert shower and thunderstorm activity, with the best chances (15-30%) over the San Gabriel mountains and Antelope Valley. but there is also a 5-15% chance of thunderstorms for other portions of Southwest California including coastal/valley areas. The leading edge of the monsoon surge may be somewhat drier at low levels, which may lead to the potential for isolated dry lightning strikes and gusty/erratic downburst/outflow winds late Monday night into Tuesday. $$ ECC028-011030- Santa Barbara County excluding Los Padres National Forest- Discussion for Santa Barbara ECC Dispatch 922 AM PDT Sun Aug 31 2025 ...WARMING AND DRYING TREND THROUGH HOLIDAY WEEKEND WITH ELEVATED FIRE WEATHER CONDITIONS ACROSS INTERIOR INCLUDING RISK OF LARGE PLUME DOMINATED FIRES... ...POTENTIAL INCREASE IN MONSOONAL MOISTURE AND INSTABILITY WILL BRING THREAT OF THUNDERSTORMS AND ENHANCED RISK OF LARGE PLUME DOMINATED FIRES LATE MONDAY NIGHT THROUGH FRIDAY... Temperatures will warm today through Tuesday as high pressure aloft reestablishes and builds back into the Four Corners Region. The peak of the heat will be Monday through Wednesday, when highs of 95 to 106 will be common across the valleys, lower mountains, and deserts. The hotter temperatures combined with increased instability will bring deeper mixing heights which are expected to peak Monday through Wednesday at 12,000 to 18,000 feet across the interior. As a result, there is an elevated risk for large plume dominated fires across the interior. Humidities between 10 and 25 percent will be common over the warmest valleys and mountains through Tuesday, then potential humidity increase by Wednesday due to an influx of monsoonal moistures. Increasing mid level moisture associated with an upper level disturbance will bring a slight chance of showers and thunderstorms by late Monday night into Tuesday morning across LA/Ventura counties. From Tuesday afternoon through Friday, the focus will be more traditional mountain/desert shower and thunderstorm activity, with the best chances (15-30%) over the San Gabriel mountains and Antelope Valley. but there is also a 5-15% chance of thunderstorms for other portions of Southwest California including coastal/valley areas. The leading edge of the monsoon surge may be somewhat drier at low levels, which may lead to the potential for isolated dry lightning strikes and gusty/erratic downburst/outflow winds late Monday night into Tuesday. $$ ECC031-011030- Angeles National Forest- Discussion for Lancaster ECC Dispatch 922 AM PDT Sun Aug 31 2025 ...WARMING AND DRYING TREND THROUGH HOLIDAY WEEKEND WITH ELEVATED FIRE WEATHER CONDITIONS ACROSS INTERIOR INCLUDING RISK OF LARGE PLUME DOMINATED FIRES... ...POTENTIAL INCREASE IN MONSOONAL MOISTURE AND INSTABILITY WILL BRING THREAT OF THUNDERSTORMS AND ENHANCED RISK OF LARGE PLUME DOMINATED FIRES LATE MONDAY NIGHT THROUGH FRIDAY... Temperatures will warm today through Tuesday as high pressure aloft reestablishes and builds back into the Four Corners Region. The peak of the heat will be Monday through Wednesday, when highs of 95 to 106 will be common across the valleys, lower mountains, and deserts. The hotter temperatures combined with increased instability will bring deeper mixing heights which are expected to peak Monday through Wednesday at 12,000 to 18,000 feet across the interior. As a result, there is an elevated risk for large plume dominated fires across the interior. Humidities between 10 and 25 percent will be common over the warmest valleys and mountains through Tuesday, then potential humidity increase by Wednesday due to an influx of monsoonal moistures. Increasing mid level moisture associated with an upper level disturbance will bring a slight chance of showers and thunderstorms by late Monday night into Tuesday morning across LA/Ventura counties. From Tuesday afternoon through Friday, the focus will be more traditional mountain/desert shower and thunderstorm activity, with the best chances (15-30%) over the San Gabriel mountains and Antelope Valley. but there is also a 5-15% chance of thunderstorms for other portions of Southwest California including coastal/valley areas. The leading edge of the monsoon surge may be somewhat drier at low levels, which may lead to the potential for isolated dry lightning strikes and gusty/erratic downburst/outflow winds late Monday night into Tuesday. $$ ECC024-011030- San Luis Obispo County- Discussion for San Luis Obispo ECC Dispatch 922 AM PDT Sun Aug 31 2025 ...WARMING AND DRYING TREND THROUGH HOLIDAY WEEKEND WITH ELEVATED FIRE WEATHER CONDITIONS ACROSS INTERIOR INCLUDING RISK OF LARGE PLUME DOMINATED FIRES... ...POTENTIAL INCREASE IN MONSOONAL MOISTURE AND INSTABILITY WILL BRING THREAT OF THUNDERSTORMS AND ENHANCED RISK OF LARGE PLUME DOMINATED FIRES LATE MONDAY NIGHT THROUGH FRIDAY... Temperatures will warm today through Tuesday as high pressure aloft reestablishes and builds back into the Four Corners Region. The peak of the heat will be Monday through Wednesday, when highs of 95 to 106 will be common across the valleys, lower mountains, and deserts. The hotter temperatures combined with increased instability will bring deeper mixing heights which are expected to peak Monday through Wednesday at 12,000 to 18,000 feet across the interior. As a result, there is an elevated risk for large plume dominated fires across the interior. Humidities between 10 and 25 percent will be common over the warmest valleys and mountains through Tuesday, then potential humidity increase by Wednesday due to an influx of monsoonal moistures. Increasing mid level moisture associated with an upper level disturbance will bring a slight chance of showers and thunderstorms by late Monday night into Tuesday morning across LA/Ventura counties. From Tuesday afternoon through Friday, the focus will be more traditional mountain/desert shower and thunderstorm activity, with the best chances (15-30%) over the San Gabriel mountains and Antelope Valley. but there is also a 5-15% chance of thunderstorms for other portions of Southwest California including coastal/valley areas. The leading edge of the monsoon surge may be somewhat drier at low levels, which may lead to the potential for isolated dry lightning strikes and gusty/erratic downburst/outflow winds late Monday night into Tuesday. $$ ECC032-011030- Ventura County excluding Los Padres National Forest- Discussion for Ventura ECC Dispatch 922 AM PDT Sun Aug 31 2025 ...WARMING AND DRYING TREND THROUGH HOLIDAY WEEKEND WITH ELEVATED FIRE WEATHER CONDITIONS ACROSS INTERIOR INCLUDING RISK OF LARGE PLUME DOMINATED FIRES... ...POTENTIAL INCREASE IN MONSOONAL MOISTURE AND INSTABILITY WILL BRING THREAT OF THUNDERSTORMS AND ENHANCED RISK OF LARGE PLUME DOMINATED FIRES LATE MONDAY NIGHT THROUGH FRIDAY... Temperatures will warm today through Tuesday as high pressure aloft reestablishes and builds back into the Four Corners Region. The peak of the heat will be Monday through Wednesday, when highs of 95 to 106 will be common across the valleys, lower mountains, and deserts. The hotter temperatures combined with increased instability will bring deeper mixing heights which are expected to peak Monday through Wednesday at 12,000 to 18,000 feet across the interior. As a result, there is an elevated risk for large plume dominated fires across the interior. Humidities between 10 and 25 percent will be common over the warmest valleys and mountains through Tuesday, then potential humidity increase by Wednesday due to an influx of monsoonal moistures. Increasing mid level moisture associated with an upper level disturbance will bring a slight chance of showers and thunderstorms by late Monday night into Tuesday morning across LA/Ventura counties. From Tuesday afternoon through Friday, the focus will be more traditional mountain/desert shower and thunderstorm activity, with the best chances (15-30%) over the San Gabriel mountains and Antelope Valley. but there is also a 5-15% chance of thunderstorms for other portions of Southwest California including coastal/valley areas. The leading edge of the monsoon surge may be somewhat drier at low levels, which may lead to the potential for isolated dry lightning strikes and gusty/erratic downburst/outflow winds late Monday night into Tuesday. $$ ECC030-011030- Los Angeles County excluding Angeles National Forest- Discussion for Los Angeles ECC Dispatch 922 AM PDT Sun Aug 31 2025 ...WARMING AND DRYING TREND THROUGH HOLIDAY WEEKEND WITH ELEVATED FIRE WEATHER CONDITIONS ACROSS INTERIOR INCLUDING RISK OF LARGE PLUME DOMINATED FIRES... ...POTENTIAL INCREASE IN MONSOONAL MOISTURE AND INSTABILITY WILL BRING THREAT OF THUNDERSTORMS AND ENHANCED RISK OF LARGE PLUME DOMINATED FIRES LATE MONDAY NIGHT THROUGH FRIDAY... Temperatures will warm today through Tuesday as high pressure aloft reestablishes and builds back into the Four Corners Region. The peak of the heat will be Monday through Wednesday, when highs of 95 to 106 will be common across the valleys, lower mountains, and deserts. The hotter temperatures combined with increased instability will bring deeper mixing heights which are expected to peak Monday through Wednesday at 12,000 to 18,000 feet across the interior. As a result, there is an elevated risk for large plume dominated fires across the interior. Humidities between 10 and 25 percent will be common over the warmest valleys and mountains through Tuesday, then potential humidity increase by Wednesday due to an influx of monsoonal moistures. Increasing mid level moisture associated with an upper level disturbance will bring a slight chance of showers and thunderstorms by late Monday night into Tuesday morning across LA/Ventura counties. From Tuesday afternoon through Friday, the focus will be more traditional mountain/desert shower and thunderstorm activity, with the best chances (15-30%) over the San Gabriel mountains and Antelope Valley. but there is also a 5-15% chance of thunderstorms for other portions of Southwest California including coastal/valley areas. The leading edge of the monsoon surge may be somewhat drier at low levels, which may lead to the potential for isolated dry lightning strikes and gusty/erratic downburst/outflow winds late Monday night into Tuesday. $$