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Alert Archives for All California Counties
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91 total alerts issued on this day

Updates Every 15 Minutes
Spacer GifLast Update:March 19, 2026 - 7:00 am PDT
Alameda County
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 18 9:18 pm Expired: Mar 19 5:30 am Duration: 8 hrs   12 mins  
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 19 5:09 am Expired: Mar 19 3:00 pm Duration: 9 hrs   51 mins  
Contra Costa County
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 18 9:18 pm Expired: Mar 19 5:30 am Duration: 8 hrs   12 mins  
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 19 5:09 am Expired: Mar 19 3:00 pm Duration: 9 hrs   51 mins  
Los Angeles County
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 18 9:18 pm Expired: Mar 19 5:30 am Duration: 8 hrs   12 mins  
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 19 5:09 am Expired: Mar 19 3:00 pm Duration: 9 hrs   51 mins  
Marin County
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 18 9:18 pm Expired: Mar 19 5:30 am Duration: 8 hrs   12 mins  
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 19 5:09 am Expired: Mar 19 3:00 pm Duration: 9 hrs   51 mins  
Monterey County
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 18 9:18 pm Expired: Mar 19 5:30 am Duration: 8 hrs   12 mins  
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 19 5:09 am Expired: Mar 19 3:00 pm Duration: 9 hrs   51 mins  
Napa County
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 18 9:18 pm Expired: Mar 19 5:30 am Duration: 8 hrs   12 mins  
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 19 5:09 am Expired: Mar 19 3:00 pm Duration: 9 hrs   51 mins  
San Benito County
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 18 9:18 pm Expired: Mar 19 5:30 am Duration: 8 hrs   12 mins  
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 19 5:09 am Expired: Mar 19 3:00 pm Duration: 9 hrs   51 mins  
San Francisco County
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 18 9:18 pm Expired: Mar 19 5:30 am Duration: 8 hrs   12 mins  
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 19 5:09 am Expired: Mar 19 3:00 pm Duration: 9 hrs   51 mins  
San Mateo County
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 18 9:18 pm Expired: Mar 19 5:30 am Duration: 8 hrs   12 mins  
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 19 5:09 am Expired: Mar 19 3:00 pm Duration: 9 hrs   51 mins  
Santa Clara County
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 18 9:18 pm Expired: Mar 19 5:30 am Duration: 8 hrs   12 mins  
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 19 5:09 am Expired: Mar 19 3:00 pm Duration: 9 hrs   51 mins  
Santa Cruz County
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 18 9:18 pm Expired: Mar 19 5:30 am Duration: 8 hrs   12 mins  
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 19 5:09 am Expired: Mar 19 3:00 pm Duration: 9 hrs   51 mins  
Sonoma County
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 18 9:18 pm Expired: Mar 19 5:30 am Duration: 8 hrs   12 mins  
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Effective: Mar 19 5:09 am Expired: Mar 19 3:00 pm Duration: 9 hrs   51 mins  
Imperial County
SVW.gif   EXTREME HEAT WARNING   (2 updates)
Areas affected: Parker Valley; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Mar 18 1:43 pm Expired: Mar 19 2:00 am Duration: 12 hrs   17 mins  
Areas affected: Parker Valley; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Mar 19 12:06 am Expired: Mar 19 3:00 pm Duration: 14 hrs   54 mins  
Riverside County   2 alerts
SVW.gif   EXTREME HEAT WARNING   (8 updates)
Areas affected: Parker Valley; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Mar 18 1:43 pm Expired: Mar 19 2:00 am Duration: 12 hrs   17 mins  
Areas affected: Coachella Valley
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: San Gorgonio Pass Near Banning
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: Parker Valley; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Mar 19 12:06 am Expired: Mar 19 3:00 pm Duration: 14 hrs   54 mins  
Areas affected: San Gorgonio Pass Near Banning
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: Coachella Valley
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: Coachella Valley
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
Areas affected: San Gorgonio Pass Near Banning
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
HTY.gif   HEAT ADVISORY   (9 updates)
Areas affected: Santa Ana Mountains and Foothills
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: Riverside County Mountains
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: Santa Ana Mountains and Foothills
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: Riverside County Mountains
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: Santa Ana Mountains and Foothills
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
Areas affected: Riverside County Mountains
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
San Bernardino County   2 alerts
SVW.gif   EXTREME HEAT WARNING   (4 updates)
Areas affected: Parker Valley; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Mar 18 1:43 pm Expired: Mar 19 2:00 am Duration: 12 hrs   17 mins  
Areas affected: Northwest Plateau; Lake Havasu and Fort Mohave; Northwest Deserts; Lake Mead National Recreation Area; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Lake Mead National Recreation Area; Southern Clark County
Effective: Mar 18 10:50 am Expired: Mar 19 1:00 am Duration: 14 hrs   10 mins  
Areas affected: Parker Valley; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Mar 19 12:06 am Expired: Mar 19 3:00 pm Duration: 14 hrs   54 mins  
Areas affected: Northwest Plateau; Lake Havasu and Fort Mohave; Northwest Deserts; Lake Mead National Recreation Area; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Lake Mead National Recreation Area; Southern Clark County
Effective: Mar 19 12:03 am Expired: Mar 19 3:00 pm Duration: 14 hrs   57 mins  
HTY.gif   HEAT ADVISORY   (6 updates)
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: San Bernardino County Mountains
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: San Bernardino County Mountains
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
Areas affected: San Bernardino County Mountains
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
Inyo County   2 alerts
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: Owens Valley; Esmeralda and Central Nye County; Lincoln County
Effective: Mar 18 10:50 am Expired: Mar 19 1:00 am Duration: 14 hrs   10 mins  
Areas affected: Owens Valley; Esmeralda and Central Nye County; Lincoln County
Effective: Mar 19 12:03 am Expired: Mar 19 3:00 pm Duration: 14 hrs   57 mins  
SVW.gif   EXTREME HEAT WARNING   (2 updates)
Areas affected: Northwest Plateau; Lake Havasu and Fort Mohave; Northwest Deserts; Lake Mead National Recreation Area; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Lake Mead National Recreation Area; Southern Clark County
Effective: Mar 18 10:50 am Expired: Mar 19 1:00 am Duration: 14 hrs   10 mins  
Areas affected: Northwest Plateau; Lake Havasu and Fort Mohave; Northwest Deserts; Lake Mead National Recreation Area; Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Lake Mead National Recreation Area; Southern Clark County
Effective: Mar 19 12:03 am Expired: Mar 19 3:00 pm Duration: 14 hrs   57 mins  
Orange County
HTY.gif   HEAT ADVISORY   (9 updates)
Areas affected: Orange County Inland
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: Santa Ana Mountains and Foothills
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: Orange County Coastal
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: Orange County Inland
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: Orange County Coastal
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: Santa Ana Mountains and Foothills
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: Orange County Coastal
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
Areas affected: Santa Ana Mountains and Foothills
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
Areas affected: Orange County Inland
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
San Diego County   2 alerts
HTY.gif   HEAT ADVISORY   (12 updates)
Areas affected: Santa Ana Mountains and Foothills
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: San Diego County Coastal Areas
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: San Diego County Mountains
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: San Diego County Inland Valleys
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: Santa Ana Mountains and Foothills
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: San Diego County Coastal Areas
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: San Diego County Inland Valleys
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: San Diego County Mountains
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: Santa Ana Mountains and Foothills
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
Areas affected: San Diego County Inland Valleys
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
Areas affected: San Diego County Mountains
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
Areas affected: San Diego County Coastal Areas
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
SVW.gif   EXTREME HEAT WARNING   (3 updates)
Areas affected: San Diego County Deserts
Effective: Mar 18 7:53 pm Expired: Mar 19 4:00 am Duration: 8 hrs   07 mins  
Areas affected: San Diego County Deserts
Effective: Mar 19 1:51 am Expired: Mar 19 4:00 pm Duration: 14 hrs   09 mins  
Areas affected: San Diego County Deserts
Effective: Mar 19 9:56 am Expired: Mar 19 10:15 pm Duration: 12 hrs   19 mins  
San Luis Obispo County   2 alerts
SVW.gif   EXTREME HEAT WARNING  
Areas affected: Santa Lucia Mountains; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains
Effective: Mar 18 1:06 pm Expired: Mar 20 8:00 pm Duration: 2 days   6 hrs   54 mins  
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: Cuyama Valley; Southern Salinas Valley; San Luis Obispo County Interior Valleys
Effective: Mar 18 1:06 pm Expired: Mar 20 8:00 pm Duration: 2 days   6 hrs   54 mins  
Areas affected: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast
Effective: Mar 18 1:06 pm Expired: Mar 20 8:00 pm Duration: 2 days   6 hrs   54 mins  
Santa Barbara County   2 alerts
SVW.gif   EXTREME HEAT WARNING  
Areas affected: Santa Lucia Mountains; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains
Effective: Mar 18 1:06 pm Expired: Mar 20 8:00 pm Duration: 2 days   6 hrs   54 mins  
HTY.gif   HEAT ADVISORY   (3 updates)
Areas affected: Cuyama Valley; Southern Salinas Valley; San Luis Obispo County Interior Valleys
Effective: Mar 18 1:06 pm Expired: Mar 20 8:00 pm Duration: 2 days   6 hrs   54 mins  
Areas affected: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast
Effective: Mar 18 1:06 pm Expired: Mar 20 8:00 pm Duration: 2 days   6 hrs   54 mins  
Areas affected: San Miguel and Santa Rosa Islands; Santa Cruz and Anacapa Islands
Effective: Mar 18 1:06 pm Expired: Mar 20 8:00 pm Duration: 2 days   6 hrs   54 mins  
Ventura County   2 alerts
SVW.gif   EXTREME HEAT WARNING   (2 updates)
Areas affected: Santa Lucia Mountains; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains
Effective: Mar 18 1:06 pm Expired: Mar 20 8:00 pm Duration: 2 days   6 hrs   54 mins  
Areas affected: Santa Clarita Valley; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Los Angeles County Inland Coast including Downtown Los Angeles; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Effective: Mar 18 1:06 pm Expired: Mar 20 8:00 pm Duration: 2 days   6 hrs   54 mins  
HTY.gif   HEAT ADVISORY  
Areas affected: Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills
Effective: Mar 18 1:06 pm Expired: Mar 20 8:00 pm Duration: 2 days   6 hrs   54 mins  




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