Preparedness library

Complete guide library

Browse practical planning guidance for outages, water, food, backup power, communication, and home safety. Start with a topic or browse by publication date.

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Each topic helps you choose a guide for the decision in front of you, with planning tools and supporting reading when useful.

258 published guides

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Use only the charger supplied or explicitly approved by the bike/battery manufacturer, remain present and awake while charging, and keep exits clear. Do not charge a damaged, modified or recalled pack or use an unapproved universal charger. Verify the exact bike's current recall status and electrical system certification; damaged lithium-ion packs require special professional and disposal guidance.

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A traditional UPS is designed to keep compatible equipment running through a short power interruption; some portable power stations also advertise UPS or EPS modes, but their exact transfer specifications vary. Verify device tolerance, output waveform, continuous watts, runtime and supported test procedure. Never assume a larger Wh rating guarantees seamless switching or connect either device to household wiring by backfeeding.

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A fiber ONT needs local power, but an ONT battery marketed for phone service may not power home internet, Wi-Fi or cordless phones. Map every powered box from the fiber entry to your device, confirm which outputs the provider backs up, then size a maker-approved backup for the complete permitted path. A charged ONT cannot fix a failed upstream provider network.

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Track disaster expenses as they occur, including date, provider, category, actual amount paid, payment method, receipt location and claim conversation. Distinguish normal baseline expenses from additional costs caused by temporary relocation. Insurance reimbursement depends on your exact policy, peril and state rules; a spreadsheet entry by itself does not prove coverage.

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When cell service fails, do not assume texting, phone apps or satellite features will always work. Before an emergency, agree on a safe meeting point, an out-of-area contact, paper numbers and how family members will respond to official instructions. Add independent sources of alerts such as a tested local NOAA weather radio where coverage exists, and verify each device's exact limits in advance.

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After flooding, do not begin repairs just because visible water has drained. First confirm authorities permit return, avoid structural and electrical hazards, and contact appropriate utilities or professionals. Photograph damage safely for the insurer, stop further entry of water when authorized, then arrange safe drying and qualified structural, electrical and contaminated-material assessment before cosmetic restoration.

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A practical readiness budget starts with known household hazards, required safe repairs, emergency contacts, food and water, and the cash you can realistically spare. List upfront costs and ongoing replacement expenses, then prioritize items that prevent an urgent unsafe condition or preserve essential functions. There is no universally correct percentage to spend on backup gadgets, and debt-funded upgrades require careful personal review.

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An indoor PM2.5 monitor estimates fine particle concentration; it cannot detect every indoor gas or certify that a room is safe. Read the exact pollutant and unit, place the sensor away from very local emissions and obstructions, and use repeated observations alongside outdoor alerts. Consumer monitors vary in accuracy and can respond to humidity, so a single reading is not a medical or regulatory all-clear.

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After a disaster, verify contractor licensing with the state or county licensing authority, ask for proof of insurance, collect comparable written bids and read the full contract before signing. Avoid pressure to sign immediately, blank contracts, large unexplained advance payments or instructions to transfer an insurance check. Emergency safety and utility work should be handled only by authorized qualified personnel.

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NOAA Weather Radio and smartphone Wireless Emergency Alerts are complementary, not substitutes. NWR requires a functioning receiver in range of a transmitter; WEA requires a compatible phone and operating cell-broadcast infrastructure. Weather apps usually need a network path. Check local radio reception and phone settings before storms, then follow the exact current official warning and evacuation order.

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Offline maps can help with basic streets and orientation when mobile data fails, but downloaded maps do not guarantee current road closures, fire perimeters, flood levels or official evacuation routes. Before a disaster, save sufficient geographic coverage for likely safe destinations, print key contacts and verify how to obtain fresh instructions from local authorities. Never drive around a barricade because a saved route looks open.

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A useful neighbor emergency group starts with consent: choose a small contact tree, share only the minimum details people agree to, and establish how to pass along official warnings or ask for help. Agree on check-in times and what to do if someone is unreachable; do not enter homes, collect medical data or replace emergency responders. Practice once before a real event.

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A properly sized window AC may be a more efficient room-cooling option, but it needs a suitable permitted window and safe installation. A floor-standing portable AC needs a compatible outdoor exhaust path and space, and performance ratings are not always directly comparable to window models. Check the exact model, room and circuit—and have another cool location ready if power fails.

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An emergency pantry works best when its inventory reflects actual meals and safe packaging, not just item count. Record each food, serving quantity, storage zone, unopened storage guidance, after-opening refrigeration rule and next use/replace check. Move older safe stock into normal meals and replenish what was eaten, while following labels and FoodSafety.gov rather than assuming every date is a safety deadline.

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For a small apartment emergency pantry, start with familiar shelf-stable meals you can eat without refrigeration or fuel, then expand toward the household's chosen duration. Keep water and heavy containers on stable suitable surfaces, check food labels and keep exits and electrical areas clear. Rotate through normal meals instead of buying bulky novelty survival food.

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FoodSafety.gov says an unopened refrigerator generally keeps food cold for about four hours during an outage. Perishable refrigerated food such as meat, eggs, milk and leftovers should be discarded after four hours without power, or when its unsafe temperature history meets the official category chart. Never taste food to decide safety; use verified time and appliance readings.

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A seismic gas shutoff valve reacts to qualifying shaking, while an excess-flow device responds to certain abnormal gas-flow conditions. They solve different problems and neither detects every leak. Check the serving utility, local code, California approval and a licensed plumbing installer before selecting a device. Never install equipment on utility facilities or restore gas service yourself after a suspected leak.

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Interconnected smoke alarms are intended to sound together when one activates. Both hardwired and manufacturer-supported wireless interconnection options exist, but models, powering, permitted placement and installation rules differ. Check local fire code, exact model compatibility and a qualified electrician for hardwired work; test the whole group according to the manuals.