Preparedness Brief | September 21, 2026: Before the First Heavy Rain

Issue date: September 21, 2026
Reporting window: September 15–21, with a September 22 tropical-weather update
Source review: September 22, 2026

The most useful storm preparation often happens before there is anything dramatic to photograph: replacing worn wipers, checking a roof leak, filling the water supply, and finding out whether the battery in the closet actually runs the equipment you bought it for.

This week, work through the household you already have. Keep what works. Replenish what is missing. Make the decisions that would be harder in the dark or with a road closed.

Why this week deserves attention

California: On September 21, the state declared an emergency to accelerate preparations for a potentially very strong El Niño. The action addresses flood, landslide and coastal risks and the resources needed before severe weather. It is an early-preparation measure, not a prediction that every community will flood. El Niño does not guarantee a particular storm or a wet winter at your address. Cal OES announcement, September 21, 2026.

Pacific watch: Associated Press reporting on September 22, citing the National Hurricane Center, describes Hurricane Polo off southwestern Mexico and Tropical Storm Odalys farther out in the eastern Pacific. That activity matters for affected communities and travel, but it is not a California landfall forecast. Use current local forecasts for local decisions. Associated Press, September 22, 2026.

The practical response is a checklist, not a panic purchase. California households should pay particular attention to runoff, burn scars, coastal access and power interruptions. The same supply and maintenance checks are useful well beyond the state.

1. Stock the things your household actually uses

• Drinking water: Start with at least one gallon per person per day for three days. A four-person household needs at least 12 gallons for that starting reserve, before pets and extra needs. CDC advises trying for two weeks if possible. Use sealed commercial water or properly cleaned food-grade containers, and check storage dates. CDC water-storage guidance, June 27, 2025.
• Food and everyday supplies: Check shelf-stable meals you will actually eat, a manual can opener, infant needs, pet food, hygiene supplies and trash bags. Plan a no-cook option. Do not bring outdoor cooking equipment indoors.
• Prescription medicines: Count what is on hand and ask your pharmacist or prescriber about an appropriate emergency supply before access becomes difficult. Keep a medication list with doses, allergies, pharmacy and prescriber contacts. Ask how to maintain the required temperature during an outage or evacuation; do not improvise with medicines that require refrigeration. CDC prescriptions guidance, April 18, 2024.
• First aid and lighting: Replace used or expired kit contents. Put a working flashlight or headlamp where each household member can find it. Check spare batteries and charging leads.
• Sandbags: If your property needs runoff protection, arrange bags, suitable fill, a shovel and gloves now. Ask local public works or your fire department about distribution, limits and correct placement; availability varies. Sandbags can help divert some water, but are not a guarantee against flooding. Do not block exits or public drainage. LAFD guidance, February 14, 2026.

Water safety matters: Do not assume a camping filter makes floodwater drinkable. Water containing fuel or toxic chemicals cannot be made safe by boiling or disinfecting. Use a safe alternative source and follow your water utility and health department's instructions. CDC emergency-water guidance, September 19, 2024.

2. Test stored battery power, not just its charge indicator

Make a short list of the equipment you need during an outage: phone, lighting, radio, and any essential household devices. Beside each item, write its connector, power requirement and the number of hours you need it to work.

1. Inspect: Check the battery, enclosure, cords and plugs for damage. Follow the manufacturer's instructions; do not use a swollen, damaged or wet battery.
2. Charge: Recharge stored power banks and power stations as directed. Gather the actual cables and adapters that belong with the devices.
3. Connect and test: For ordinary nonmedical equipment, run the intended load under safe, supervised conditions. A charging icon alone does not establish useful runtime. Note settings, elapsed time and remaining charge, then restore the battery's charge.
4. Record the result: Label the kit with the test date and what it powered. Put a reminder on your calendar to recheck it according to the manufacturer's storage guidance.

For medical equipment: Call the device supplier or clinician to confirm approved backup power, adapters, alarms and a relocation plan. Do not disconnect essential treatment to run a test. A consumer power station is not automatically suitable for every medical device, and an advertised capacity is not a guaranteed treatment duration. FDA medical-device disaster guidance, reviewed September 22, 2026.

When a power bank is not enough: consider the NESTOUT 700N

The NESTOUT 700N portable power station is an option for compatible essentials that need more than a small USB battery. Its rated capacity is 712Wh, with 700W continuous AC output and 1,300W surge. Those numbers describe different things: capacity is stored energy; output is the load it can support.

Before choosing it, list the devices you would run together, check their combined running power and startup demand, and identify the required outlets or adapters. Runtime varies with load, settings, conversion losses and battery condition. It is not a whole-home backup, and a router with power still needs a working upstream internet connection. The unit is not waterproof; keep it dry and follow its operating instructions. Manufacturer specifications, reviewed September 22, 2026.

Review the 700N for your backup-power plan. If you want help assessing the fit, send us the device model and your target runtime. For medical equipment, the device supplier must confirm the approved backup arrangement.

For a smaller gap, the NESTOUT 5,000mAh power bank is a phone-charging option, while the NITECORE NU21 headlamp provides hands-free lighting. Neither substitutes for a suitable medical-device power plan. If your existing gear passes the checks, keep using it.

3. Check the roof, drainage and vehicle while conditions are safe

At home

• Look from a safe ground-level position for missing or damaged roofing, loose flashing and obvious gutter problems. Check accessible indoor areas for signs of existing leaks.
• Arrange a qualified roofer's inspection and repairs before heavy rain and wind. Do not climb onto a wet roof or start roof work during a storm.
• Clear accessible gutters, downspouts and drains safely, or hire help. Check that runoff can move away from the building without creating another hazard.
• Secure loose outdoor furniture and other items that could move in wind. Put essential documents in a waterproof container and a copy somewhere accessible off-site or offline.
• If you rent or share a building, send maintenance concerns to the property manager now and confirm who handles drainage and storm repairs.

For your vehicle

Check tire condition and pressure, wiper blades and washer fluid, headlights and brake lights, defrosters, brakes and the starting battery. Address overdue service and warning lights with a mechanic. Maintain enough fuel or EV charge for your evacuation route and an alternative destination; do not depend on a station being open after an outage.

Stage water, a light, a phone cable, weather layers and the household's essential go items. Check current road conditions before leaving. A capable vehicle is not permission to enter floodwater. NHTSA vehicle-preparation guidance, reviewed September 22, 2026.

4. Decide where to go before the route becomes the problem

Write down your destination, a backup destination, primary and alternate routes, an out-of-area contact, and who will help anyone who cannot evacuate independently. Include pets, school pickup, mobility needs and any powered medical equipment. Save the plan offline and discuss it with the people who will use it.

Flooding, landslides and burn scars

If you live downhill or downstream of a recent burn, ask local emergency management about your specific risk and evacuation triggers. Intense rain can cause flash flooding and debris flows quickly, including before a warning reaches you. A dry street at home does not tell you what is falling uphill.

Choose routes that avoid vulnerable channels and low crossings where possible. Leave when directed and do not wait until a debris flow is visible. Sandbags and staying behind to defend the house will not stop a debris flow. Never drive around a closure or through floodwater. NWS burn-scar guidance, reviewed September 22, 2026.

Coastal evacuation considerations

Check local coastal-flood and evacuation maps for home, work and your route. Identify inland or higher-ground destinations outside the threatened area and low roads that could close first. Make a transportation plan early if you rely on one coastal road or need assistance.

Follow local coastal-flood, high-surf and evacuation instructions. Stay away from beaches, jetties and exposed shorelines during hazardous surf; do not go to watch the waves. A forecast track offshore is not a reason to ignore a local coastal warning, and sandbags are not protection from storm surge. Cal OES coastal-risk context, September 21; NWS evacuation-planning guidance, reviewed September 22.

A practical order for the next few days

• Today: Sign up for local alerts, check water and medicine, charge stored power, and write down the evacuation destination.
• This week, in safe weather: Test equipment, arrange the roof inspection, clear drainage safely, service the vehicle, and obtain sandbags if appropriate.
• When a local storm watch is issued: Review the actual forecast and routes, top up supplies and charge, and make sure everyone knows the plan.
• When officials direct evacuation: Follow their instructions. Do not delay to finish shopping, charge equipment or protect property.

There is no need to replace a working kit just because a storm has a name. The useful purchase is the one that solves a gap you have actually found. The useful plan is the one your household can carry out.

Keep learning

• SRO Field Manual: Hurricane Preparedness Guide
• SRO Field Manual: Build a Communications Redundancy Plan

For identified gaps, browse Water, Medical, Shelter, and Navigation & Signaling. Equipment supports the plan; it does not replace local instructions.

Featured image: NOAA National Ocean Service illustration of typical El Niño winter patterns, not a forecast for a specific storm. Public-domain U.S. government work. Source and rights context. Image unchanged. Sources are linked beside the statements they support; undated guidance was reviewed September 22, 2026.

Respectfully,
Charles Quarto
Founder & Owner, Stay Ready Outdoors

Stay Sharp. Stay Ready.