Los Angeles, California
Regional Weather Alerts
| Alert: | Coastal Flood Advisory |
| Area(s): | Northern Coastal Humboldt |
| Effective: | 2026-08-11 @ 4:17 am -> 2026-08-11 @ 12:30 pm |
| Onset: | 2026-08-12 @ 12:00 am -> 2026-08-12 @ 3:00 am |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Eureka CA on 2026-08-11 @ 4:17 am |
| Headline: | Coastal Flood Advisory issued August 11 at 2:17AM PDT until August 12 at 1:00AM PDT by NWS Eureka CA |
| Description: |
* WHAT...High astronomical tides will cause minor flooding in low lying areas around Humboldt Bay. Up to one half foot of saltwater inundation above ground level is possible near shorelines and tidal waterways. Between 8.7 and 8.9 feet MLLW at the North Spit tide gauge is predicted. * WHERE...Northern Coastal Humboldt County. * WHEN...From 10 PM this evening to 1 AM PDT Wednesday. High tide is at 11:17 PM at the Humboldt Bay North Spit tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. * IMPACTS...Flooding of low lying areas around Humboldt Bay including parks and roads with only isolated closures expected. Flooding will likely impact Jackson Ranch Road in the Arcata Bottoms and several roads in King Salmon. |
| Alert: | Coastal Flood Advisory |
| Area(s): | San Diego County Coastal Areas; Orange County Coastal |
| Effective: | 2026-08-11 @ 3:37 am -> 2026-08-11 @ 4:00 pm |
| Onset: | 2026-08-11 @ 3:37 am -> 2026-08-13 @ 1:00 am |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Diego CA on 2026-08-11 @ 3:37 am |
| Headline: | Coastal Flood Advisory issued August 11 at 1:37AM PDT until August 12 at 11:00PM PDT by NWS San Diego CA |
| Description: |
* WHAT...Minor coastal flooding expected during the evening high tides. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...From 6 PM Monday to 11 PM PDT Wednesday. * IMPACTS...Flooding of low lying parking lots, parks, and roads. * ADDITIONAL DETAILS...High tides of 7.2 to 7.5 will peak each evening between 7:30PM-10PM due to astronomical high tides. |
| Alert: | Coastal Flood Advisory |
| Area(s): | San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast |
| Effective: | 2026-08-11 @ 12:18 am -> 2026-08-12 @ 2:00 am |
| Onset: | 2026-08-11 @ 12:18 am -> 2026-08-13 @ 4:00 am |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS San Francisco CA on 2026-08-11 @ 12:18 am |
| Headline: | Coastal Flood Advisory issued August 10 at 10:18PM PDT until August 13 at 2:00AM PDT by NWS San Francisco CA |
| Description: |
* WHAT...Up to 1.6 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along the San Francisco Bay, San Pablo Bay, and Monterey Bay. * WHEN...Until 2 AM PDT Thursday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.6 ft above normal (7.44 ft MLLW) at 10:57 PM Tuesday 8/11 and 1.4 ft above normal (7.24 ft MLLW) at 11:49 PM Wednesday 8/12. These predictions include both astronomical tides and roughly 3-6 inches of additional water mainly from a combination of thermal expansion and accumulated sea level rise since the tidal datum was established (1983- 2001). High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively. |
| Alert: | Coastal Flood Advisory |
| Area(s): | Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Malibu Coast; Los Angeles County Beaches |
| Effective: | 2026-08-10 @ 10:58 pm -> 2026-08-11 @ 5:00 pm |
| Onset: | 2026-08-10 @ 10:58 pm -> 2026-08-13 @ 2:00 am |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Los Angeles/Oxnard CA on 2026-08-10 @ 10:58 pm |
| Headline: | Coastal Flood Advisory issued August 10 at 8:58PM PDT until August 13 at 12:00AM PDT by NWS Los Angeles/Oxnard CA |
| Description: |
* WHAT...Minor coastal flooding expected during the evening high tides. * WHERE...Santa Barbara County Southwestern Coast, Santa Barbara County Southeastern Coast, Ventura County Beaches, Malibu Coast and Los Angeles County Beaches. * WHEN...Through midnight PDT Wednesday night. * IMPACTS...Flooding of sea water is likely, around the time of high tide, over vulnerable low-lying coastal areas such as parking lots, beaches, and walkways. Significant damage to roads or structures is NOT expected. * ADDITIONAL DETAILS...Coastal flooding concerns will peak each evening between about 8 PM and 10 PM due to astronomical high tides of 7.3 to 7.5 feet. |