Land Management Forecasts
Issued by NWS Los Angeles, CA
Issued by NWS Los Angeles, CA
144 FNUS86 KLOX 051633 FWLLOX ECCDA Discussions National Weather Service Los Angeles/Oxnard CA 933 AM PDT Fri Jul 5 2024 ECC029-061045- Los Padres National Forest- Discussion for Vandenberg ECC Dispatch 933 AM PDT Fri Jul 5 2024 ...Discussion from Monterey... ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM PDT SATURDAY FOR CRITICALLY DRY FUELS AND LOW HUMIDITY FOR NORTH BAY INTERIOR MOUNTAINS, EAST BAY HILLS, AND SANTA CRUZ MOUNTAINS... ...RED FLAG WARNING IN EFFECT FROM 9 AM FRIDAY TO 9 PM PDT SATURDAY FOR WINDS, CRITICALLY DRY FUELS, AND LOW HUMIDITY FOR SANTA LUCIA MOUNTAINS, MOUNTAINS OF SAN BENTIO COUNTY AND INTERIOR MONTEREY COUNTY, AND THE SOUTHERN SALINAS VALLEY... Onshore winds are moderate, gusting in the 15-25 mph range for most locations. While these winds are bringing a marginal improvement to the critically low RH over the next few days, this prolonged heat wave will continue to slowly cure and dry the larger fuels. ERC values are exceeding or approaching the max moving average for a number of regions. Conditions are dangerous, and we urge extreme caution. Note : All winds are 20-foot Winds Unless otherwise specified. Thunderstorms imply strong, gusty and erratic winds. ...Discussion from Los Angeles/Oxnard... ...RED FLAG WARNING IN EFFECT UNTIL 6 AM SATURDAY FOR THE INTERSTATE 5 CORRIDOR, VENTURA COUNTY MOUNTAINS, SANTA BARBARA COUNTY MOUNTAINS, SOUTHWEST SANTA BARBARA COAST, INTERIOR SAN LUIS OBISPO COUNTY, AND CUYAMA VALLEY... ...WIDESPREAD ELEVATED TO BRIEF CRITICAL FIRE WEATHER CONDITIONS ELSEWHERE ACROSS VALLEYS AND MOUNTAINS THROUGH MUCH OF NEXT WEEK, MOST SIGNIFICANT TODAY AND SATURDAY... Long lasting and extremely hot conditions Will continue through much of next week. Today will likely be the hottest across much of the region as the onshore flow weakens and some northerly wind flow has pushed closer to the coast. On Saturday, similar very hot temperatures are expected across the interior, but some increasing onshore flow should bring some cooling to the coast and coastal valleys. A few all time record highs will be threatened today and Saturday. Over the mountains and interior valleys, high temperatures will climb to 108 to 118 today with minimum humidities falling to 5 to 10 percent. Over the coastal valleys and foothills, high temperatures will climb to 100 to 110 today with minimum humidities falling to 10 to 20 percent. Coastal areas will also warm and dry significantly, but exactly how the marine layer behaves will drive the magnitude. Sundowner winds will likely surface across much of the Santa Ynez Range today through tonight, descending into portions of the foothills including areas near San Marcos Pass, Mission Canyon, and Montecito Hills. Northwest to north wind gusts of 25 to 40 mph will be common in sundowner prone areas as well as the I-5 corridor through tonight, except isolated gusts to around 45 mph near Gaviota/Refugio this evening. Areas exposed to the sundowner winds will likely see temperatures soar to between 90 and 105 degrees today, with minimum minimum humidities falling to 10 to 20 percent...especially in the foothills. Overnight lows between 75 and 90 will be common in the mountains, foothills and deserts with poor humidity recoveries of 15 to 35 percent. Meanwhile, northwest to northeast winds gusting between 15 and 35 mph will be common today over many mountains, interior valleys, and the Antelope Valley. The extreme heat will also generate very deep mixing heights of 10000 to 18000 feet today through the weekend across the interior, increasing the potential for large plume dominated fires, especially in the mountains and foothills. While classic Red Flag thresholds will likely not be met, considering the extreme nature of this heat event (including the plume dominated fire potential) and the holiday fire ignition sources available, conditions are favorable for critical fire weather activity and behavior. Less hot conditions are likely for the coastal and adjacent valley areas by Sunday or Monday, but the extremely hot conditions will change little over the mountains and interior through most if not all of next week. Gusty southwest to northwest winds are expected to increase across much of the interior during the afternoon and evening hours Saturday through Monday, as onshore flow increases. This will lead to a large area of elevated to brief critical fire weather conditions across the interior, with possible extensions of Red Flag Warnings for certain areas which will be further examined by this afternoon. This is one of the longest and most extreme heat waves on record for interior areas. Elevated fire weather conditions will continue for the foreseeable future, with a high risk for grass fires and plume dominated wildfires. There is a high risk for heat related illness as well. $$ ECC028-061045- Santa Barbara County excluding Los Padres National Forest- Discussion for Santa Barbara ECC Dispatch 933 AM PDT Fri Jul 5 2024 ...RED FLAG WARNING IN EFFECT UNTIL 6 AM SATURDAY FOR THE INTERSTATE 5 CORRIDOR, VENTURA COUNTY MOUNTAINS, SANTA BARBARA COUNTY MOUNTAINS, SOUTHWEST SANTA BARBARA COAST, INTERIOR SAN LUIS OBISPO COUNTY, AND CUYAMA VALLEY... ...WIDESPREAD ELEVATED TO BRIEF CRITICAL FIRE WEATHER CONDITIONS ELSEWHERE ACROSS VALLEYS AND MOUNTAINS THROUGH MUCH OF NEXT WEEK, MOST SIGNIFICANT TODAY AND SATURDAY... Long lasting and extremely hot conditions Will continue through much of next week. Today will likely be the hottest across much of the region as the onshore flow weakens and some northerly wind flow has pushed closer to the coast. On Saturday, similar very hot temperatures are expected across the interior, but some increasing onshore flow should bring some cooling to the coast and coastal valleys. A few all time record highs will be threatened today and Saturday. Over the mountains and interior valleys, high temperatures will climb to 108 to 118 today with minimum humidities falling to 5 to 10 percent. Over the coastal valleys and foothills, high temperatures will climb to 100 to 110 today with minimum humidities falling to 10 to 20 percent. Coastal areas will also warm and dry significantly, but exactly how the marine layer behaves will drive the magnitude. Sundowner winds will likely surface across much of the Santa Ynez Range today through tonight, descending into portions of the foothills including areas near San Marcos Pass, Mission Canyon, and Montecito Hills. Northwest to north wind gusts of 25 to 40 mph will be common in sundowner prone areas as well as the I-5 corridor through tonight, except isolated gusts to around 45 mph near Gaviota/Refugio this evening. Areas exposed to the sundowner winds will likely see temperatures soar to between 90 and 105 degrees today, with minimum minimum humidities falling to 10 to 20 percent...especially in the foothills. Overnight lows between 75 and 90 will be common in the mountains, foothills and deserts with poor humidity recoveries of 15 to 35 percent. Meanwhile, northwest to northeast winds gusting between 15 and 35 mph will be common today over many mountains, interior valleys, and the Antelope Valley. The extreme heat will also generate very deep mixing heights of 10000 to 18000 feet today through the weekend across the interior, increasing the potential for large plume dominated fires, especially in the mountains and foothills. While classic Red Flag thresholds will likely not be met, considering the extreme nature of this heat event (including the plume dominated fire potential) and the holiday fire ignition sources available, conditions are favorable for critical fire weather activity and behavior. Less hot conditions are likely for the coastal and adjacent valley areas by Sunday or Monday, but the extremely hot conditions will change little over the mountains and interior through most if not all of next week. Gusty southwest to northwest winds are expected to increase across much of the interior during the afternoon and evening hours Saturday through Monday, as onshore flow increases. This will lead to a large area of elevated to brief critical fire weather conditions across the interior, with possible extensions of Red Flag Warnings for certain areas which will be further examined by this afternoon. This is one of the longest and most extreme heat waves on record for interior areas. Elevated fire weather conditions will continue for the foreseeable future, with a high risk for grass fires and plume dominated wildfires. There is a high risk for heat related illness as well. $$ ECC031-061045- Angeles National Forest- Discussion for Lancaster ECC Dispatch 933 AM PDT Fri Jul 5 2024 ...RED FLAG WARNING IN EFFECT UNTIL 6 AM SATURDAY FOR THE INTERSTATE 5 CORRIDOR, VENTURA COUNTY MOUNTAINS, SANTA BARBARA COUNTY MOUNTAINS, SOUTHWEST SANTA BARBARA COAST, INTERIOR SAN LUIS OBISPO COUNTY, AND CUYAMA VALLEY... ...WIDESPREAD ELEVATED TO BRIEF CRITICAL FIRE WEATHER CONDITIONS ELSEWHERE ACROSS VALLEYS AND MOUNTAINS THROUGH MUCH OF NEXT WEEK, MOST SIGNIFICANT TODAY AND SATURDAY... Long lasting and extremely hot conditions Will continue through much of next week. Today will likely be the hottest across much of the region as the onshore flow weakens and some northerly wind flow has pushed closer to the coast. On Saturday, similar very hot temperatures are expected across the interior, but some increasing onshore flow should bring some cooling to the coast and coastal valleys. A few all time record highs will be threatened today and Saturday. Over the mountains and interior valleys, high temperatures will climb to 108 to 118 today with minimum humidities falling to 5 to 10 percent. Over the coastal valleys and foothills, high temperatures will climb to 100 to 110 today with minimum humidities falling to 10 to 20 percent. Coastal areas will also warm and dry significantly, but exactly how the marine layer behaves will drive the magnitude. Sundowner winds will likely surface across much of the Santa Ynez Range today through tonight, descending into portions of the foothills including areas near San Marcos Pass, Mission Canyon, and Montecito Hills. Northwest to north wind gusts of 25 to 40 mph will be common in sundowner prone areas as well as the I-5 corridor through tonight, except isolated gusts to around 45 mph near Gaviota/Refugio this evening. Areas exposed to the sundowner winds will likely see temperatures soar to between 90 and 105 degrees today, with minimum minimum humidities falling to 10 to 20 percent...especially in the foothills. Overnight lows between 75 and 90 will be common in the mountains, foothills and deserts with poor humidity recoveries of 15 to 35 percent. Meanwhile, northwest to northeast winds gusting between 15 and 35 mph will be common today over many mountains, interior valleys, and the Antelope Valley. The extreme heat will also generate very deep mixing heights of 10000 to 18000 feet today through the weekend across the interior, increasing the potential for large plume dominated fires, especially in the mountains and foothills. While classic Red Flag thresholds will likely not be met, considering the extreme nature of this heat event (including the plume dominated fire potential) and the holiday fire ignition sources available, conditions are favorable for critical fire weather activity and behavior. Less hot conditions are likely for the coastal and adjacent valley areas by Sunday or Monday, but the extremely hot conditions will change little over the mountains and interior through most if not all of next week. Gusty southwest to northwest winds are expected to increase across much of the interior during the afternoon and evening hours Saturday through Monday, as onshore flow increases. This will lead to a large area of elevated to brief critical fire weather conditions across the interior, with possible extensions of Red Flag Warnings for certain areas which will be further examined by this afternoon. This is one of the longest and most extreme heat waves on record for interior areas. Elevated fire weather conditions will continue for the foreseeable future, with a high risk for grass fires and plume dominated wildfires. There is a high risk for heat related illness as well. $$ ECC024-061045- San Luis Obispo County- Discussion for San Luis Obispo ECC Dispatch 933 AM PDT Fri Jul 5 2024 ...RED FLAG WARNING IN EFFECT UNTIL 6 AM SATURDAY FOR THE INTERSTATE 5 CORRIDOR, VENTURA COUNTY MOUNTAINS, SANTA BARBARA COUNTY MOUNTAINS, SOUTHWEST SANTA BARBARA COAST, INTERIOR SAN LUIS OBISPO COUNTY, AND CUYAMA VALLEY... ...WIDESPREAD ELEVATED TO BRIEF CRITICAL FIRE WEATHER CONDITIONS ELSEWHERE ACROSS VALLEYS AND MOUNTAINS THROUGH MUCH OF NEXT WEEK, MOST SIGNIFICANT TODAY AND SATURDAY... Long lasting and extremely hot conditions Will continue through much of next week. Today will likely be the hottest across much of the region as the onshore flow weakens and some northerly wind flow has pushed closer to the coast. On Saturday, similar very hot temperatures are expected across the interior, but some increasing onshore flow should bring some cooling to the coast and coastal valleys. A few all time record highs will be threatened today and Saturday. Over the mountains and interior valleys, high temperatures will climb to 108 to 118 today with minimum humidities falling to 5 to 10 percent. Over the coastal valleys and foothills, high temperatures will climb to 100 to 110 today with minimum humidities falling to 10 to 20 percent. Coastal areas will also warm and dry significantly, but exactly how the marine layer behaves will drive the magnitude. Sundowner winds will likely surface across much of the Santa Ynez Range today through tonight, descending into portions of the foothills including areas near San Marcos Pass, Mission Canyon, and Montecito Hills. Northwest to north wind gusts of 25 to 40 mph will be common in sundowner prone areas as well as the I-5 corridor through tonight, except isolated gusts to around 45 mph near Gaviota/Refugio this evening. Areas exposed to the sundowner winds will likely see temperatures soar to between 90 and 105 degrees today, with minimum minimum humidities falling to 10 to 20 percent...especially in the foothills. Overnight lows between 75 and 90 will be common in the mountains, foothills and deserts with poor humidity recoveries of 15 to 35 percent. Meanwhile, northwest to northeast winds gusting between 15 and 35 mph will be common today over many mountains, interior valleys, and the Antelope Valley. The extreme heat will also generate very deep mixing heights of 10000 to 18000 feet today through the weekend across the interior, increasing the potential for large plume dominated fires, especially in the mountains and foothills. While classic Red Flag thresholds will likely not be met, considering the extreme nature of this heat event (including the plume dominated fire potential) and the holiday fire ignition sources available, conditions are favorable for critical fire weather activity and behavior. Less hot conditions are likely for the coastal and adjacent valley areas by Sunday or Monday, but the extremely hot conditions will change little over the mountains and interior through most if not all of next week. Gusty southwest to northwest winds are expected to increase across much of the interior during the afternoon and evening hours Saturday through Monday, as onshore flow increases. This will lead to a large area of elevated to brief critical fire weather conditions across the interior, with possible extensions of Red Flag Warnings for certain areas which will be further examined by this afternoon. This is one of the longest and most extreme heat waves on record for interior areas. Elevated fire weather conditions will continue for the foreseeable future, with a high risk for grass fires and plume dominated wildfires. There is a high risk for heat related illness as well. $$ ECC032-061045- Ventura County excluding Los Padres National Forest- Discussion for Ventura ECC Dispatch 933 AM PDT Fri Jul 5 2024 ...RED FLAG WARNING IN EFFECT UNTIL 6 AM SATURDAY FOR THE INTERSTATE 5 CORRIDOR, VENTURA COUNTY MOUNTAINS, SANTA BARBARA COUNTY MOUNTAINS, SOUTHWEST SANTA BARBARA COAST, INTERIOR SAN LUIS OBISPO COUNTY, AND CUYAMA VALLEY... ...WIDESPREAD ELEVATED TO BRIEF CRITICAL FIRE WEATHER CONDITIONS ELSEWHERE ACROSS VALLEYS AND MOUNTAINS THROUGH MUCH OF NEXT WEEK, MOST SIGNIFICANT TODAY AND SATURDAY... Long lasting and extremely hot conditions Will continue through much of next week. Today will likely be the hottest across much of the region as the onshore flow weakens and some northerly wind flow has pushed closer to the coast. On Saturday, similar very hot temperatures are expected across the interior, but some increasing onshore flow should bring some cooling to the coast and coastal valleys. A few all time record highs will be threatened today and Saturday. Over the mountains and interior valleys, high temperatures will climb to 108 to 118 today with minimum humidities falling to 5 to 10 percent. Over the coastal valleys and foothills, high temperatures will climb to 100 to 110 today with minimum humidities falling to 10 to 20 percent. Coastal areas will also warm and dry significantly, but exactly how the marine layer behaves will drive the magnitude. Sundowner winds will likely surface across much of the Santa Ynez Range today through tonight, descending into portions of the foothills including areas near San Marcos Pass, Mission Canyon, and Montecito Hills. Northwest to north wind gusts of 25 to 40 mph will be common in sundowner prone areas as well as the I-5 corridor through tonight, except isolated gusts to around 45 mph near Gaviota/Refugio this evening. Areas exposed to the sundowner winds will likely see temperatures soar to between 90 and 105 degrees today, with minimum minimum humidities falling to 10 to 20 percent...especially in the foothills. Overnight lows between 75 and 90 will be common in the mountains, foothills and deserts with poor humidity recoveries of 15 to 35 percent. Meanwhile, northwest to northeast winds gusting between 15 and 35 mph will be common today over many mountains, interior valleys, and the Antelope Valley. The extreme heat will also generate very deep mixing heights of 10000 to 18000 feet today through the weekend across the interior, increasing the potential for large plume dominated fires, especially in the mountains and foothills. While classic Red Flag thresholds will likely not be met, considering the extreme nature of this heat event (including the plume dominated fire potential) and the holiday fire ignition sources available, conditions are favorable for critical fire weather activity and behavior. Less hot conditions are likely for the coastal and adjacent valley areas by Sunday or Monday, but the extremely hot conditions will change little over the mountains and interior through most if not all of next week. Gusty southwest to northwest winds are expected to increase across much of the interior during the afternoon and evening hours Saturday through Monday, as onshore flow increases. This will lead to a large area of elevated to brief critical fire weather conditions across the interior, with possible extensions of Red Flag Warnings for certain areas which will be further examined by this afternoon. This is one of the longest and most extreme heat waves on record for interior areas. Elevated fire weather conditions will continue for the foreseeable future, with a high risk for grass fires and plume dominated wildfires. There is a high risk for heat related illness as well. $$ ECC030-061045- Los Angeles County excluding Angeles National Forest- Discussion for Los Angeles ECC Dispatch 933 AM PDT Fri Jul 5 2024 ...RED FLAG WARNING IN EFFECT UNTIL 6 AM SATURDAY FOR THE INTERSTATE 5 CORRIDOR, VENTURA COUNTY MOUNTAINS, SANTA BARBARA COUNTY MOUNTAINS, SOUTHWEST SANTA BARBARA COAST, INTERIOR SAN LUIS OBISPO COUNTY, AND CUYAMA VALLEY... ...WIDESPREAD ELEVATED TO BRIEF CRITICAL FIRE WEATHER CONDITIONS ELSEWHERE ACROSS VALLEYS AND MOUNTAINS THROUGH MUCH OF NEXT WEEK, MOST SIGNIFICANT TODAY AND SATURDAY... Long lasting and extremely hot conditions Will continue through much of next week. Today will likely be the hottest across much of the region as the onshore flow weakens and some northerly wind flow has pushed closer to the coast. On Saturday, similar very hot temperatures are expected across the interior, but some increasing onshore flow should bring some cooling to the coast and coastal valleys. A few all time record highs will be threatened today and Saturday. Over the mountains and interior valleys, high temperatures will climb to 108 to 118 today with minimum humidities falling to 5 to 10 percent. Over the coastal valleys and foothills, high temperatures will climb to 100 to 110 today with minimum humidities falling to 10 to 20 percent. Coastal areas will also warm and dry significantly, but exactly how the marine layer behaves will drive the magnitude. Sundowner winds will likely surface across much of the Santa Ynez Range today through tonight, descending into portions of the foothills including areas near San Marcos Pass, Mission Canyon, and Montecito Hills. Northwest to north wind gusts of 25 to 40 mph will be common in sundowner prone areas as well as the I-5 corridor through tonight, except isolated gusts to around 45 mph near Gaviota/Refugio this evening. Areas exposed to the sundowner winds will likely see temperatures soar to between 90 and 105 degrees today, with minimum minimum humidities falling to 10 to 20 percent...especially in the foothills. Overnight lows between 75 and 90 will be common in the mountains, foothills and deserts with poor humidity recoveries of 15 to 35 percent. Meanwhile, northwest to northeast winds gusting between 15 and 35 mph will be common today over many mountains, interior valleys, and the Antelope Valley. The extreme heat will also generate very deep mixing heights of 10000 to 18000 feet today through the weekend across the interior, increasing the potential for large plume dominated fires, especially in the mountains and foothills. While classic Red Flag thresholds will likely not be met, considering the extreme nature of this heat event (including the plume dominated fire potential) and the holiday fire ignition sources available, conditions are favorable for critical fire weather activity and behavior. Less hot conditions are likely for the coastal and adjacent valley areas by Sunday or Monday, but the extremely hot conditions will change little over the mountains and interior through most if not all of next week. Gusty southwest to northwest winds are expected to increase across much of the interior during the afternoon and evening hours Saturday through Monday, as onshore flow increases. This will lead to a large area of elevated to brief critical fire weather conditions across the interior, with possible extensions of Red Flag Warnings for certain areas which will be further examined by this afternoon. This is one of the longest and most extreme heat waves on record for interior areas. Elevated fire weather conditions will continue for the foreseeable future, with a high risk for grass fires and plume dominated wildfires. There is a high risk for heat related illness as well. $$