Free tools Windows power users keep installed
One-click scans. No signup required.
El Niño can raise the risk of heavy rain, flooding, coastal impacts and related hazards in California, but it does not guarantee a wet winter or a particular storm. California’s September 21, 2026 preparedness announcement urges residents to prepare early. Check your address-specific hazards, sign up for local alerts, protect people before property, and use current forecasts and emergency instructions—not the seasonal outlook alone—to decide what to do.
Start with the hazards around your address
Enter your address in California’s MyHazards tool, then check local flood information and ask your city or county emergency management office what risks and instructions apply to your neighborhood. A single map layer cannot describe every flood hazard. California can experience riverine, coastal, flash, alluvial-fan, debris-flow and localized flooding.
As an Amazon Associate I earn from qualifying purchases.
Consider what is near your home: creeks, drainage channels, the coast, steep slopes, or areas affected by recent wildfires. For coastal homes, El Niño can contribute to stronger storms, heavier rainfall, larger waves, coastal flooding and beach erosion; exposure varies by location. Follow local officials and National Weather Service advisories, watches and warnings. See the California Department of Water Resources’ flood preparedness guidance and the California Coastal Commission’s El Niño and extreme weather information.
Prepare before storms are imminent
- Set up alerts and a household plan. Sign up for city or county emergency alerts and monitor National Weather Service forecasts. Choose a meeting place, an out-of-area contact, an evacuation destination and a primary and alternate route. Include pets and anyone who may need assistance.
- Clear drainage on your property. Remove debris from gutters and downspouts and clear drains where you can do so safely and lawfully. Do not put yourself at risk to clear a drain during a storm.
- Prepare supplies and records. Keep medications, food, water and essentials ready. Make a household inventory and keep copies of important documents somewhere safe and accessible. Pack a go-bag in case you need to leave.
- Learn utility shutoffs in advance. Ask your utility company how to shut off services safely, and do not attempt a shutoff if conditions make it dangerous.
- Review insurance early. Contact your insurer or agent to ask what your policy covers and whether flood insurance is available for your property.
Build a practical emergency kit
The National Weather Service recommends having food, water and medicine available for at least three days. Its before-a-flood guidance also lists batteries, blankets, flashlights, a first-aid kit, rubber boots, rubber gloves and a NOAA Weather Radio or other battery-operated radio. Account for household members’ specific needs, including prescriptions, infant supplies and pet food.
#1 Best Overall
- 6 FT SLIDING DOOR BARRIERS: Use as protection for sliding doors, french doors, and similar at risk areas; Fresh water activated barriers offer easy protection against flooding and leaks in 5-10 min
- NO SAND REQUIRED: Evenly filled with water absorbing Sand Gel that stays in place; No sand, shovels, or heavy lifting required; Foldable and lightweight before deployment for compact storage
- 2 PACK: Measures 72 L x 5 W and expands up to 3 H inches; Great for absorbing and diverting water in front of sliding doors or around leaking appliances; Buy multiple for more coverage
- HEAVY-DUTY: Thick puncture-resistant fabric is built to last unlike traditional sandbags that rip and leak; Sand Gel filler solidifies once set to resist leaking for dependable performance
- EASY TO USE: Lay in the path of slow moving water to activate or pre-soak in a bucket to prep for fast moving water; Avoid contact with chlorine or salt water which can prevent activation or deactivate the gel; Packaging may vary
Use flood barriers only when appropriate
If your property is prone to flooding, California’s Department of Water Resources advises keeping flood-fighting materials such as sandbags and plastic sheeting on hand. Before buying sandbags for flood protection, check whether your city or county offers them and follow its instructions for placement and use. The right approach depends on the site and local guidance; temporary barriers do not guarantee a dry home or make it safe to ignore an evacuation order.
Do not enter floodwater to place, adjust or retrieve barriers. If conditions are worsening, prioritize people and evacuation instructions over property protection.
Rank #2
- Water Activated Flood Barriers, Rated #1 in Flood Control
- Grows to 3.5in high in minutes, just get them wet
- Long, flexible design creates all sorts of shapes
- Use to control, contain & divert flood water
- Ready to use, no sand or labor needed
Know what to do when flooding threatens
- Follow evacuation orders promptly. Take people, pets, medications and essential documents. Do not delay to protect belongings.
- Never drive or walk through floodwater. It can be deeper or faster-moving than it appears, and the road beneath it may be damaged. Turn around and choose another route.
- Keep monitoring official alerts. Conditions and instructions can change quickly. Follow local emergency management and National Weather Service updates.
- If officials advise sheltering in place and it is safe, use your prepared supplies, keep communications available and follow their directions.
Check flood insurance before you need it
Standard homeowners’ and renters’ policies typically exclude flood damage. California Department of Insurance guidance also notes that flooding, mudslides and debris flows may be excluded unless a policy exception applies; a landlord’s policy generally does not cover a renter’s personal belongings. Flood insurance may be available through the National Flood Insurance Program in participating communities or from private insurers.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
The California Department of Insurance says the usual flood-insurance waiting period is 30 days, with an exception for some home purchases where coverage is required by a lender. Coverage, eligibility, exclusions and timing depend on the policy and situation, so confirm details directly with your insurer or agent. Its September 22, 2026 guidance is available at the California Department of Insurance.
Quick Recap
Best Value
- Increased Caliber Sandbags: Our long canvas sandbags are 6’ × 6” in size (empty), enlarged caliber, holding more sand, and the height after filling with sand has a better waterproof treatment effect.
- Thickened Canvas Material: Those rain wind flood barriers are made of thickened canvas with a thickness of about 0.48mm, which are sturdy, abrasion-resistant, tear-resistant, nice toughness, durable, good waterproof, not fade, and can be reused.
- Flexible Elastic Band: The opening of our sandbag tube are designed with a bound elastic band, convenient, flexible and easy to use, just tighten the elastic band to prevent sand leakage after being filled with sand.
- Wide Application: The reusable long sand bags for flooding are suitable for all kinds of places that need flood control, such as house doors and windows, fences, gates, sewer entrances, parking lots, garden gates, elevator entrances, garage entrances, basement skylights, etc., which are strong barriers against heavy rains, floods and wind.
- Package Includes: You will receive 4pcs 6ft canvas sand bag tube, 24ft in total length, sufficient quantity and length for your waterproof treatment. You can also share our high-quality canvas flood protection sand bags to your relatives and friends for joint waterproofing.
Rank #4
- TOUGHEST MATERIAL: Our woven polypropylene sand bags are built to endure the elements. All DURASACK Heavy Duty Sand Bags and tie strings are treated with a UV inhibitor so they can stay intact after prolonged sun exposure — ideal for long-term outdoor storage, job sites, and any application where bags must hold up to sun, rain, and wind.
- ULTIMATE FLOOD AND STORM PROTECTION: We engineered DURASACK Sand Bags to keep your home and business safe from flooding. These sandbags are portable, easy to fill with a 50 lbs capacity, and effective as building blocks when you need a quick dam or flood barrier. The DURASACK Sand Bag retail pack is a must-have for your year-round disaster and emergency preparedness kit.
- MULTIPLE USES: Whether you are working on a landscaping project, construction site, or erosion control application, DURASACK bags deliver. Also perfect for: anchoring canopies, tents, event tents, and pop-up awnings; motorcycle and dirt bike track berms and barriers; military and tactical training; shooting range backstops; ballast weight for trucks, trailers, and ATVs; storing dry materials like sand, gravel, or mulch; temporary road and trail repair; and counterweighting scaffolding, staging, and lifting equipment. Convenient built-in tie strings give you total control over when, where, and how you want to use these UV-treated utility bags.
- PROVEN QUALITY: Family owned and operated, DURASACK has been a leader in the bag and packaging industry since 1876. Customers have trusted us to provide the highest quality bags for almost 150 years.
- CONVENIENT SIZE: Each bag has dimensions of 14 x 26 inches and a 50-pound capacity — the ideal size for flood control, sand bag walls, ballast, trail repair, or filling with gravel to anchor signage, fencing, and portable structures.
Rank #3
- Water Activated Flood Bags, Rated #1 in Flood Control
- Grows to 3.5in high in minutes, just get them wet
- Use to control, contain & divert flood water
- Ready to use, no sand or labor needed
- Compact & Lightweight, stores away until needed
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
