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Helendale Warnings, Watches and Advisories

NWS Active Alerts for CA - Map View

State: CA Total alerts: 6 Updated: Nov 1, 2026 9:42am PST

Coastal Flood Advisory

Area
San Francisco; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Coastal Flood Advisory issued November 1 at 1:07AM PDT until November 1 at 6:00PM PST by NWS San Francisco CA

* WHAT...For the Coastal Flood Advisory, Up to 1.5 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, An increased risk for sneaker waves and strong rip currents. * WHERE...San Francisco, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...For the Coastal Flood Advisory, until 6 PM PDT Sunday. For the Beach Hazards Statement, from late Sunday night through Tuesday evening. * IMPACTS...High tides will result in flooding of low-lying infrastructure, isolated road closures, and coastal erosion. Rising tides will bring water and waves farther up the beach than normal, restricting escape from beaches and coastal areas. Waves can sweep across the shoreline without warning, pulling people into the sea from beaches, jetties, and rocks. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.0 ft above normal (6.8 ft MLLW) on Sunday 11/01 at 3:59 PM. These predictions include up to 1.5 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

Coastal Flood Advisory

Area
North Bay Interior Valleys; San Francisco Bay Shoreline
Coastal Flood Advisory issued November 1 at 1:07AM PDT until November 1 at 6:00PM PST by NWS San Francisco CA

* WHAT...Up to 1.5 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 6 PM PDT Sunday. * IMPACTS...High tides will result in flooding of low-lying infrastructure, isolated road closures, and coastal erosion. Rising tides will bring water and waves farther up the beach than normal, restricting escape from beaches and coastal areas. More substantial impacts are expected along bayshore Marin County where increased flooding is anticipated across low lying areas. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.0 ft above normal (6.8 ft MLLW) on Sunday 11/01 at 3:59 PM. These predictions include up to 1.5 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

Beach Hazards Statement

Area
Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast
Beach Hazards Statement issued November 1 at 1:07AM PDT until November 3 at 8:00PM PST by NWS San Francisco CA

* WHAT...An increased risk for sneaker waves and strong rip currents. * WHERE...Coastal North Bay Including Point Reyes National Seashore and San Francisco Peninsula Coast Counties. * WHEN...From late Sunday night through Tuesday evening. * IMPACTS...Waves can sweep across the shoreline without warning, pulling people into the sea from beaches, jetties, and rocks.

Beach Hazards Statement

Area
San Francisco; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Beach Hazards Statement issued November 1 at 1:07AM PDT until November 3 at 8:00PM PST by NWS San Francisco CA

* WHAT...For the Coastal Flood Advisory, Up to 1.5 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, An increased risk for sneaker waves and strong rip currents. * WHERE...San Francisco, Northern Monterey Bay and Southern Monterey Bay and Big Sur Coast Counties. * WHEN...For the Coastal Flood Advisory, until 6 PM PDT Sunday. For the Beach Hazards Statement, from late Sunday night through Tuesday evening. * IMPACTS...High tides will result in flooding of low-lying infrastructure, isolated road closures, and coastal erosion. Rising tides will bring water and waves farther up the beach than normal, restricting escape from beaches and coastal areas. Waves can sweep across the shoreline without warning, pulling people into the sea from beaches, jetties, and rocks. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.0 ft above normal (6.8 ft MLLW) on Sunday 11/01 at 3:59 PM. These predictions include up to 1.5 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

Flood Watch

Area
Northwest Plateau; Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Hualapai Mountains; Northwest Deserts; San Bernardino County-Upper Colorado River Valley; Lincoln County; Northeast Clark County; Lake Mead - NV side; Lake Mohave - NV side
Flood Watch issued November 1 at 12:13AM PDT until November 2 at 4:00AM PST by NWS Las Vegas NV

* WHAT...Flash flooding caused by excessive rainfall will be possible. * WHERE...Portions of northwest Arizona, including the following areas, Hualapai Mountains, Lake Havasu and Fort Mohave, Lake Mead - AZ side, Lake Mohave - AZ side, Northwest Deserts and Northwest Plateau, southeast California, including the following area, San Bernardino County-Upper Colorado River Valley, and Nevada, including the following areas, Lake Mead - NV side, Lake Mohave - NV side, Lincoln County and Northeast Clark County. * WHEN...Now through late Sunday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - Moderate to heavy rain is possible at times. Between a half an inch and an inch of rain will be possible. With saturated soils and significant run off expected, flash flooding may occur. - http://www.weather.gov/safety/flood

Beach Hazards Statement

Area
Coastal Del Norte; Northern Coastal Humboldt; Southwestern Humboldt; Coastal Mendocino
Beach Hazards Statement issued October 31 at 10:07PM PDT until November 2 at 10:00PM PST by NWS Eureka CA

* WHAT...Increased threat of sneaker waves expected. * WHERE...Coastal Del Norte, Northern Coastal Humboldt, Southwestern Humboldt and Coastal Mendocino Counties. * WHEN...From Sunday evening through Monday evening. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These sneaker waves can also move large objects such as logs, crushing anyone caught underneath.

SAFETY and DATA MESSAGE

When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Helendale.

Use the Radar Maps link provided to understand the trajectory of a storm.

For more official information about severe storms and how to stay safe, visit the National Weather Service's Severe Thunderstorm Safety page. We encourage you to also monitor Excessive Rainfall Forecasts on their Weather Prediction Center website.

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