(1 of 29) ...An approaching upper low will bring in a plume of monsoonal moisture. Thunderstorm chances will begin to develop this afternoon for portions of Lake, Mendocino, and Trinity counties, with increasing chances late tonight through Sunday. The dry surface environment will favor dry showers and likely dry thunderstorms which will be capable of gusty, erratic winds... * AFFECTED AREA...Fire weather zone 277.Fire weather zone 283. * THUNDERSTORMS...Likely dry thunderstorms. * OUTFLOW WINDS..Gusty and erratic outflow winds with stronger showers or thunderstorms. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. (2 of 29) * CHANGES...No Changes * Affected Area...Fire Weather Zone 270 Surprise Valley California, Fire Weather Zone 271 Western Lassen, Eastern Plumas, and Eastern Sierra Counties, Fire Weather Zone 272 Greater Lake Tahoe and Truckee Area, Fire Weather Zone 274 Southern Mono County, Fire Weather Zone 278 Eastern Lassen County, Fire Weather Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties, Fire Weather Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties, Fire Weather Zone 423 West Humboldt Basin in Pershing County, Fire Weather Zone 429 Lahontan Basin including Churchill and Eastern Mineral Counties and Fire Weather Zone 458 Northern Washoe County. * Thunderstorms...Scattered mix of wet and dry thunderstorms. * Outflow Winds...Gusts upwards of 50 mph near thunderstorms. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a fire to rapidly grow in size and intensity before first responders can contain them. (3 of 29) ..RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR MOSTLY DRY THUNDERSTORMS AND STRONG OUTFLOW WINDS ACROSS MOST MOUNTAINS, FOOTHILLS, ANTELOPE VALLEY, AND VALLEYS OF SAN LUIS OBISPO AND SANTA BARBARA COUNTIES, AS WELL AS OJAI AND CASITAS VALLEY... .An upper-atmospheric weather disturbance off the Pacific Coast will interact with an influx of monsoonal moisture to create widely scattered and mostly dry thunderstorms through this evening. Average thunderstorm motions will range from north- northwestward to north- northeastward at 20 to 35 mph. Thunderstorms will be high-based and will produce little to no precipitation, especially considering the faster movement of storm activity. Thunderstorms will also be capable of producing gusty, erratic outflow winds, gusting upwards of 45 to 60 mph on a localized basis. With the ongoing extended heatwave, contributing to significant drying of fuels, there is a significant fire- weather risk through this evening. * THUNDERSTORMS...Widely scattered mostly dry thunderstorms are occurring this morning across portions of Southwest California and are expected to increase through the day. Thunderstorms will be high-based, and produce little, if any, precipitation, resulting in an increased threat of lightning induced new fire ignitions. * OUTFLOW WINDS...Strong and erratic outflow winds produced by the dry thunderstorms, locally gusting to 45 to 60 mph, will have the potential to cause rapid spread of any ongoing fires, as well as any new fires. This includes the ongoing Lake Fire in Santa Barbara County. * IMPACTS...Conditions will be favorable for lightning-induced ignitions from mostly dry thunderstorms. Conditions will also be favorable for rapid wildfire spread and extreme fire behavior due to strong and erratic outflow winds. These conditions could threaten life and property. In addition, hot temperatures will bring the potential for large vertical plume growth. These conditions have the potential to be EXTREMELY DANGEROUS for wildfire operations. (4 of 29) * WHAT...Dangerously hot conditions with many valleys reaching between 100 and 107 degrees. * WHERE...Northern Mendocino Interior. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat. This level of heat will affect anyone without effective cooling or adequate hydration. * ADDITIONAL DETAILS...Heat can significantly impact outdoor activities. (5 of 29) * WHAT...Dangerously hot conditions with high temperatures between 105 and 115 degrees. * WHERE...Trinity County and Northern Humboldt Interior. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat. * ADDITIONAL DETAILS...Heat can significantly impact outdoor activities. (6 of 29) * WHAT...Dangerously hot conditions with widespread locations reaching between 105 and 113 degrees. * WHERE...Lake County and Southeastern Mendocino Interior. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat. This level of heat will affect anyone without effective cooling or adequate hydration. * ADDITIONAL DETAILS...Heat can significantly impact outdoor activities. (7 of 29) * WHAT...High temperatures of 100 to 110 degrees * WHERE...Western and central Siskiyou County. This includes the cities of Yreka, Weed, Etna, Happy Camp, Mt Shasta City, and Dunsmuir. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Area rivers will be cold and can cause shock to swimmers. (8 of 29) * WHAT...Dangerously hot conditions with high temperatures 100 to 105. Low temperatures in the 70s. * WHERE...Apple and Lucerne Valleys. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Thunderstorms are possible with gusty winds. Major heat risk. (9 of 29) * WHAT...Dangerously hot conditions with high temperatures of 108 to 115. Low temperatures only falling to the 80s. * WHERE...Coachella Valley and San Diego County Deserts. * WHEN...Until 9 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. A prolonged period of extreme temperatures will exacerbate impacts from the heat. * ADDITIONAL DETAILS...Highs on Sunday will fall a few degrees compared to Saturday to 108 to around 110 degrees, but increased moisture will result in muggy conditions. (10 of 29) ...Complex fire weather environment evolves this weekend... .Hot, dry and windy conditions will remain in place over most of Oregon today, and approaching monsoon moisture from the south will increase the threat of lightning across the forecast area beginning today and even more so on Sunday. Storms will likely be dry today given a very dry sub-cloud layer. The threat for storms is higher on Sunday as the moisture content increases and storms become a mix of wet and dry. * IMPACTS...Given the recent prolonged stretch of very hot and very dry conditions, lightning efficiency will be high to very high for fire starts. Any fires that develop will likely spread rapidly. * AFFECTED AREA...Eastern portions of FWZ 621, east of the Jackson/Josephine county border. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to have very little to no precipitation, especially outside of storm cores. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. These outflow winds can travel up to 50 miles away from the thunderstorm that caused it. * ADDITIONAL INFORMATION...The best chance for storms will be Sunday afternoon into Sunday evening, but isolated thunderstorms are possible late tonight into Sunday morning. Storms are likely to be dry tonight due to a very dry sub-cloud layer. Storms will trend wetter on Sunday, but remain a mix of wet and dry storms. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr (11 of 29) ...Complex fire weather environment evolves this weekend... .Hot, dry and windy conditions will remain in place over most of Oregon today, and approaching monsoon moisture from the south will increase the threat of lightning across the forecast area beginning today and even more so on Sunday. Storms will likely be dry today given a very dry sub-cloud layer. The threat for storms is higher on Sunday as the moisture content increases and storms become a mix of wet and dry. ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY EVENING FOR LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 281 AND 282... * IMPACTS...Given the recent prolonged stretch of very hot and very dry conditions, lightning efficiency will be high to very high for fire starts. Any fires that develop will likely spread rapidly. * AFFECTED AREA...All areas in Fire Weather Zones 281 and 282. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to have very little to no precipitation, especially outside of storm cores. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. These outflow winds can travel up to 50 miles away from the thunderstorm that caused it. * ADDITIONAL INFORMATION...The best chance for storms will be Sunday afternoon into Sunday evening, but isolated thunderstorms are possible late tonight into Sunday morning. Storms are likely to be dry tonight due to a very dry sub-cloud layer. Storms will trend wetter on Sunday, but remain a mix of wet and dry storms. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr (12 of 29) ...Complex fire weather environment evolves this weekend... .Hot, dry and windy conditions will remain in place over most of Oregon today, and approaching monsoon moisture from the south will increase the threat of lightning across the forecast area beginning today and even more so on Sunday. Storms will likely be dry today given a very dry sub-cloud layer. The threat for storms is higher on Sunday as the moisture content increases and storms become a mix of wet and dry. ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY EVENING FOR LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 284 AND 285... * IMPACTS...Given the recent prolonged stretch of very hot and very dry conditions, lightning efficiency will be high to very high for fire starts. Any fires that develop will likely spread rapidly. * AFFECTED AREA...For the Red Flag Warning, along and east of Highway 97, expanding to all areas tonight through Sunday. For the Fire Weather Watch on Monday, all areas. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to be mostly dry or have little precipitation. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. These outflow winds can travel up to 50 miles away from the thunderstorm that caused it. * ADDITIONAL INFORMATION...Storms will occur mainly during the afternoon and evening, with the greatest coverage expected Sunday afternoon into Sunday evening. Isolated thunderstorms are possible late tonight into Sunday morning and again Sunday night into Monday morning. Storms are likely to be dry today due to a very dry sub-cloud layer. Storms will trend wetter on Sunday, but remain a mix of wet and dry storms. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr (13 of 29) ...Complex fire weather environment evolves this weekend... .Hot, dry and windy conditions will remain in place over most of Oregon today, and approaching monsoon moisture from the south will increase the threat of lightning across the forecast area beginning today and even more so on Sunday. Storms will likely be dry today given a very dry sub-cloud layer. The threat for storms is higher on Sunday as the moisture content increases and storms become a mix of wet and dry. ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY EVENING FOR LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONE 280... * IMPACTS...Given the recent prolonged stretch of very hot and very dry conditions, lightning efficiency will be high to very high for fire starts. Any fires that develop will likely spread rapidly. * AFFECTED AREA...Much of Fire Weather Zone 280 east of Happy Camp. This includes the Shelly Fire. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to have very little to no precipitation, especially outside of storm cores. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. These outflow winds can travel up to 50 miles away from the thunderstorm that caused it. * ADDITIONAL INFORMATION...The greatest coverage for storms will be Sunday afternoon into Sunday evening, but isolated thunderstorms are possible late tonight into Sunday morning and again Sunday night into Monday morning. Storms are likely to be dry tonight due to a very dry sub-cloud layer. Storms will trend wetter on Sunday, but remain a mix of wet and dry storms. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr (14 of 29) ...RED FLAG WARNINGS CONTINUE... .The Red Flag Warning continues for FWZ 592>595 until Sunday at 900 PM PDT and the Red Flag Warning continues for FWZ 596>599 until Sunday at 900 AM PDT. * AFFECTED AREA...Southern Sierra Nevada from Kern County through Yosemite National Park. * OUTFLOW WINDS...Erratic wind gusts 40 to 50 mph in thunderstorm outflow. * HUMIDITY...Minimum daytime humidity levels as 10% or less. * THUNDERSTORMS...20-30% chance of thunderstorms - including dry lightning - each afternoon from Friday through Sunday. Less than a 10% chance of wetting rain with these storms. Thunderstorm potential is the greatest in the afternoon and evening on Saturday and Sunday * IMPACTS...Any fires that develop will likely spread rapidly due to dry fuels. Outdoor burning is not recommended. * HIGHEST THREAT...Dry thunderstorms can ignite fire and create wind gust favorable for rapid fire spread. (15 of 29) ...RED FLAG WARNINGS CONTINUE... .The Red Flag Warning continues for FWZ 592>595 until Sunday at 900 PM PDT and the Red Flag Warning continues for FWZ 596>599 until Sunday at 900 AM PDT. * AFFECTED AREA...Fire weather zone 597. * OUTFLOW WINDS...Erratic wind gusts 40 to 50 mph in thunderstorm outflow. * HUMIDITY...Minimum daytime humidity levels as 15% or less. * THUNDERSTORMS...5-15% chance of thunderstorms - including dry lightning - each afternoon from Friday through Sunday. Less than a 10% chance of wetting rain with these storms. Thunderstorm potential is the greatest in the afternoon and evening on Saturday and Sunday * IMPACTS...Any fires that develop will likely spread rapidly due to dry fuels. Outdoor burning is not recommended. * HIGHEST THREAT...Dry thunderstorms can ignite fire and create wind gust favorable for rapid fire spread. (16 of 29) ...RED FLAG WARNINGS CONTINUE... .The Red Flag Warning continues for FWZ 592>595 until Sunday at 900 PM PDT and the Red Flag Warning continues for FWZ 596>599 until Sunday at 900 AM PDT. * AFFECTED AREA...Southern Sierra Nevada from Kern County through Yosemite National Park. * OUTFLOW WINDS...Erratic wind gusts 40 to 50 mph in thunderstorm outflow. * HUMIDITY...Minimum daytime humidity levels as 15% or less. * THUNDERSTORMS...20-30% chance of thunderstorms - including dry lightning - each afternoon from Friday through Sunday. Less than a 10% chance of wetting rain with these storms. Thunderstorm potential is the greatest in the afternoon and evening on Saturday and Sunday * IMPACTS...Any fires that develop will likely spread rapidly due to dry fuels. Outdoor burning is not recommended. * HIGHEST THREAT...Dry thunderstorms can ignite fire and create wind gust favorable for rapid fire spread. (17 of 29) * Affected Area...Fire Zone 221 Stanislaus NF West of the Sierra Crest and Fire Zone 269 Northern Sierra Including the Tahoe and ElDorado NF/S West of the Sierra Crest. * Isolated thunderstorms with little to no associated precipitation are possible both today and Sunday over higher elevations of the Sierra Nevada. Best chances are today into tonight. * Gusty strong and erratic outflow wind will be possible near any thunderstorm development. * Impacts...Lightning can create new fire starts and may combine with gusty wind to cause fires to rapidly grow in size and intensity. (18 of 29) The National Weather Service in Sacramento has issued a Red Flag Warning for thunderstorms with little to no precipitation and gusty outflow winds, which is in effect from 2 AM to 11 PM PDT Sunday. The Fire Weather Watch is no longer in effect. * Affected Area...Fire Zone 213 Eastern Portion of Shasta/Trinity NF, Fire Zone 263 Southeast Edge Shasta-Trinity NF and Western Portions of Tehama-Glenn Unit, and Fire Zone 279 Eastern Mendocino NF. * Isolated thunderstorms with little to no associated precipitation are possible. * Gusty strong and erratic outflow wind could occur near any thunderstorm development. * Impacts...Lightning can create new fire starts and may combine with gusty wind to cause fires to rapidly grow in size and intensity. (19 of 29) * WHAT...Dangerously hot conditions. Afternoon temperatures 100 to 110 degrees. * WHERE...Western portion of Joshua Tree National Park, Eastern portion of Joshua Tree National Park, and Chiriaco Summit. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. (20 of 29) * WHAT...Dangerously hot conditions. Afternoon temperatures 102 to 112 degrees. * WHERE...Southeastern Imperial County, Salton Sea, and Chuckwalla Mountains. * WHEN...Until 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. (21 of 29) For Fire Weather Zones 460, 461, and 462 in Nevada: Isolated to scattered showers and thunderstorms will develop across the southern Great Basin this afternoon and evening. Chances for wetting rains are minimal due to limited low level moisture and swift storm motion, which increases the threat posed by dry lightning. Another round of showers and thunderstorms capable of producing gusty outflow winds and dry lightning will be possible tomorrow afternoon. However, this convection will be more isolated in nature. For Fire Weather Zone 226 in California: Scattered thunderstorms are expected to develop Saturday and Sunday afternoons along the Sierra crest. Limited low level moisture and swift storm motion will make the chance of wetting rain low, increasing dry lightning concerns. * THUNDERSTORMS...Scattered thunderstorms with little to no rainfall. * OUTFLOW WINDS...40 to 50 mph. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. (22 of 29) * WHAT...Dangerously hot conditions with high temperatures 108 to 115. Widespread Major to Extreme HeatRisk continues. * WHERE...Central Sacramento Valley, Motherlode, Mountains Southwestern Shasta County to Western Colusa County, Northeast Foothills/Sacramento Valley, Northern Sacramento Valley, and Shasta Lake Area / Northern Shasta County. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, particularly for those working outside or participating in outdoor activities. * ADDITIONAL DETAILS...Heat could significantly impact outdoor activities. (23 of 29) * WHAT...Dangerously hot conditions with high temperatures 100 to 110 expected. Widespread Major HeatRisk with localized Extreme HeatRisk. * WHERE...Northern San Joaquin Valley and Southern Sacramento Valley. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events, particularly for those working outside or participating in outdoor activities. * ADDITIONAL DETAILS...Heat could significantly impact outdoor activities. (24 of 29) * WHAT...High temperatures 15 to 20 degrees above normal. Major to Extreme HeatRisk. * WHERE...San Joaquin River Canyon. * WHEN...Until 10 AM PDT Sunday. * IMPACTS...Well above normal temperatures, even for the high Sierra, will make outdoor activities more likely to cause heat-related illnesses than folks are used to even at high elevation. * ADDITIONAL DETAILS...Impacts likely in most health systems, heat-sensitive industries and infrastructure. (25 of 29) * WHAT...Dangerously hot conditions as extreme Heat-Risk will occur through the duration of this heat wave. * WHERE...A portion of central California. * WHEN...Until 10 AM PDT Sunday. * IMPACTS...This level of rare, long-duration extreme heat with little to no overnight relief affects everyone, especially those without effective cooling and/or adequate hydration. * ADDITIONAL DETAILS...Impacts likely in most health systems, heat-sensitive industries and infrastructure. (26 of 29) * WHAT...Dangerously hot conditions and Extreme HeatRisk. * WHERE...Indian Wells Valley and Mojave Desert. * WHEN...Until 10 AM PDT Sunday. * IMPACTS...This level of rare, long-duration extreme heat with little to no overnight relief affects everyone, especially those without effective cooling and/or adequate hydration. * ADDITIONAL DETAILS...Impacts likely in most health systems, heat-sensitive industries and infrastructure. (27 of 29) * WHAT...Dangerously hot conditions with a 50% probability of temperatures 105 degrees or hotter. * WHERE...Grapevine. * WHEN...Until 10 AM PDT Sunday. * IMPACTS...This level of rare, long-duration extreme heat with little to no overnight relief affects everyone, especially those without effective cooling and/or adequate hydration. * ADDITIONAL DETAILS...Impacts likely in most health systems, heat-sensitive industries and infrastructure. (28 of 29) Scattered showers and thunderstorms are expected Saturday and Sunday afternoon and early evening. Some of these storms could produce lightning outside of areas of wetting rain. Erratic and strong winds are possible where thunderstorms develop. The threat for wildfire starts is significant due to dry fuels from the recent heat wave. Any ignitions could be accompanied by strong winds creating extreme fire weather. The National Weather Service in San Diego has issued a Red Flag Warning for dry lightning and gusty outflow winds, which is in effect until 9 PM PDT Sunday. The Fire Weather Watch has been upgraded to the Red Flag Warning. * IMPACTS... Strong erratic winds and lightning are possible. Chances of fire starts are more likely in areas where lightning occurs outside of areas of wetting rain. Strong and erratic wind gusts have the potential to cause rapid spread of ongoing or new fires. * LOCATION...San Bernardino County Mountains-Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest, Riverside County Mountains- Including The San Jacinto Ranger District Of The San Bernardino National Forest, Victor Valley -Apple Valley - Lucerne Valley -Johnson Valley and San Gorgonio Pass Near Banning. * THUNDERSTORMS...Scattered thunderstorms could produce gusty erratic winds and frequent lightning. Lightning has the potential to strike outside of areas of heavy rain. * OUTFLOW WINDS...Erratic wind gusts of 35 to 50 mph in stronger thunderstorms. (29 of 29) * WHAT...Dangerously hot conditions with high temperatures of 102 to 109 degrees, and very warm nights. * WHERE...A portion of southwest California. * WHEN...Until 9 PM PDT this evening. * IMPACTS...There is a high risk for dangerous heat illness for anyone, especially for the very young, the very old, those without air conditioning, and those active outdoors.
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California Amateur Radio Repeaters

California Amateur Radio Repeaters

3 repeaters found in California.


= On-Air      = Off-Air      = Testing/Reduced      = Unknown

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Access Location County Call Use Modes
224.2800 - 107.2 Arcadia, Santa Anita Ridge Los Angeles WA6CGR OPEN FM ON-AIR
224.2800 - 110.9 Chico Butte WA6UHF OPEN FM Unknown status
224.2800 - 100.0 San Jose Santa Clara WA6GFY OPEN FM ON-AIR

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