El Niño storm prep for El Dorado Hills: trees, wind, flooding, food and heat

By Shannon Yoffie, DRE# 01803503 | Yoffie Real Estate Group | Last updated October 29, 2026

A strong El Niño is on its way, and the next few dry weekends are the best time to get an El Dorado Hills home ready for it. NOAA's Climate Prediction Center issued an El Niño Advisory on October 8, 2026, with ocean temperatures in the key Pacific monitoring area running 2.1 degrees Celsius above normal, and NOAA's October 15 winter outlook favors a wetter-than-average winter in parts of California.

A strong El Niño doesn't guarantee a flood year up here. Strong El Niño winters in the Sacramento region have ranged from below average to above average, though two of the strongest on record, 1982-83 and 1997-98, brought record rain to much of California. What causes trouble in the foothills is usually a handful of big storms: wind that brings down oaks and pines, power lines that come down with them, and rain that falls faster than gutters and hillsides can move it.

We put everything below on a printable El Niño prep checklist you can stick on the fridge. And if you need an arborist, roofer or electrician, talk to our team and we'll share the local pros our clients have used.

Is El Niño going to bring a wet winter to El Dorado Hills?

The odds lean wetter than normal across much of California this winter, but El Niño's pull is usually strongest in Southern California, so El Dorado Hills should plan for a stormy winter without counting on any one outcome.

National Weather Service director Ken Graham said when NOAA released its winter outlook that heavy rain this winter could bring flash flooding and mudslides even as it eases drought. For a foothill town with mature trees and sloped lots, that's the reason to prepare now, whatever the final rain totals turn out to be.

Start with trees and wind

Trees are the first thing to check in El Dorado Hills, because a wind-thrown oak or pine can take out a roof, a car or a power line in one storm.

Saturated soil plus strong wind is when big trees go over, and the older hillside lots in Serrano and Promontory have plenty of mature oaks and gray pines. Walk your property and look for trees leaning toward the house or driveway, dead limbs over the roof, cracks where big branches meet the trunk, mushrooms at the base, or soil lifting on one side of a tree. If something worries you, have an ISA-certified arborist take a look. The county points residents to isa-arbor.com and treesaregood.org to find one.

Oaks have their own rules here. El Dorado Hills is unincorporated, so El Dorado County's oak ordinance applies, and it treats storm-damaged and hazardous oaks differently from healthy ones.

Source: El Dorado County Planning Division, Oak Resources Conservation Ordinance summary (Chapter 130.39). Questions: (530) 621-5355 or planning@edcgov.us. Confirm with the county before removing any oak.

Leave anything near a power line to PG&E. If a line comes down, stay away, call 911 and then PG&E at 1-800-743-5000. Before a windy forecast, tie down or bring in patio umbrellas, cushions, trampolines and trash cans.

Get water off the roof and away from the house

Most storm leaks and wet crawl spaces start with water that has nowhere to go, so clear gutters and drains before the heavy rain arrives.

Oak leaves keep dropping into November, so plan to clean gutters more than once. Make sure downspouts empty several feet away from the foundation, clear leaves from yard drains and the culvert at the bottom of your driveway, and check the roof for loose or missing shingles and tiles. On a sloped lot, look for bare soil that could wash out and cover it with straw wattles or mulch. If you have a sump pump, pour a bucket of water in and make sure it runs.

For low spots, El Dorado Hills Fire Station 85 at 1050 Wilson Boulevard is a county sandbag location. Pre-filled bags are often available, and you can bring a shovel and fill your own if they aren't. Flood insurance is worth a look now, too. Standard homeowners policies generally don't cover flooding, and a new National Flood Insurance Program policy typically takes 30 days to start, so a policy bought after the first atmospheric river may not help with it.

A home is the biggest asset most families here own. AreaPro market data put the median El Dorado Hills sale price at roughly $990,000 on October 1, and the $750,000 to $1 million band was the busiest in town. A few hundred dollars of drainage and tree work protects a lot of value.

Food and water for a few days at home

Plan to stay home for a few days without power or easy road access, because winter storms here can do both at once.

Ready.gov recommends storing at least one gallon of water per person per day for several days, for drinking and sanitation. Add water for pets. Stock food that doesn't need cooking or a fridge, like peanut butter, crackers, canned fish, fruit cups, granola and shelf-stable milk, plus a manual can opener. Refill prescriptions before a big storm, keep some cash on hand, and fill the car's gas tank when a storm is forecast, since gas pumps need power too.

Keep the fridge and freezer closed when the power goes out. The CDC says a closed refrigerator keeps food safe for about 4 hours, a full freezer for about 48 hours and a half-full one for about 24. Freezing a few jugs of water now fills empty freezer space and buys you time.

Staying warm safely when the power is out

The safest way to stay warm in an outage is layers and one closed-off room, and the most dangerous is any fuel-burning heat source used indoors.

Never use a gas oven, grill, camp stove or generator to heat the house or garage. Carbon monoxide has no smell, and California law requires CO alarms in homes with a gas appliance, a fireplace or an attached garage, which covers most homes in El Dorado Hills. Test them now and make sure they have battery backup. A fireplace or wood stove is a good heat source if the chimney has been inspected and cleaned. When the power is on, give space heaters three feet of clearance and plug them directly into a wall outlet.

On Friday we'll publish a full power outage plan for homes without a generator or battery, including how to add backup power and the PG&E rebate that's running low.

Shannon Yoffie and Yoffie Real Estate Group put this guide together for neighbors across El Dorado Hills, from Serrano and Promontory to Blackstone and the streets around El Dorado Hills Town Center. For more on protecting what your home is worth, see our 2026 El Dorado Hills housing market analysis, what your November property tax bill means and the live El Dorado Hills market data page.

Frequently asked questions

Is El Niño going to bring a wet winter to El Dorado Hills?

The odds lean wetter than normal. NOAA's Climate Prediction Center expects a strong to very strong El Niño through March 2027, and NOAA's October 15 winter outlook favors above-average precipitation in parts of California. El Niño's pull is usually strongest in Southern California, and past strong El Niño winters in the Sacramento region have ranged from below to above average, so plan for storms without counting on a specific total.

What should I do about trees near my house before El Niño storms?

Have an ISA-certified arborist look at any large tree that could reach your house, driveway or a power line, especially on sloped lots. In unincorporated El Dorado County, removing a dead, dying or hazardous oak usually needs an arborist's written certification and an Administrative Permit, while oaks under 6 inches in trunk diameter are exempt. Never trim near power lines yourself; call PG&E.

Where can I get sandbags in El Dorado Hills?

El Dorado Hills Fire Station 85 at 1050 Wilson Boulevard is a designated sandbag location for county residents during storm events. Pre-filled bags are often available, and if they aren't, you can bring a shovel and fill your own. Cal OES and the El Dorado County Office of Emergency Services list other locations.

Does homeowners insurance cover flooding in El Dorado Hills?

Standard homeowners policies generally don't cover flood damage, which is why flood insurance is sold separately, including through FEMA's National Flood Insurance Program. A new NFIP policy typically has a 30-day waiting period before it takes effect, so buying before the wettest months matters. Check your flood zone on FEMA's map and ask your agent what your policy covers.

How much food and water should we keep for a winter storm?

Store at least one gallon of water per person per day for several days, which is Ready.gov's guidance, plus water for pets. Add food that needs no cooking or refrigeration, a few days of medications, flashlights, batteries and charged power banks. Storms here can close roads and cut power at the same time, so plan to stay home for a few days.

How do I report a downed power line in El Dorado Hills?

Stay away from it, keep others away and assume it's live. PG&E says to call 911 first and then PG&E at 1-800-743-5000. Don't drive over a downed line or touch anything or anyone in contact with one.

Sources

NOAA Climate Prediction Center, ENSO Diagnostic Discussion and El Niño Advisory, October 8, 2026. NOAA U.S. Winter Outlook, October 15, 2026. California flood history: Golden Gate Weather Services. El Dorado County Planning Division, Oak Resources Conservation Ordinance. El Dorado Hills Fire Department, Flooding and Winter Storm Resources. FEMA, National Flood Insurance Program waiting period. Ready.gov, emergency water supply. CDC, food safety after a power outage, and carbon monoxide guidance. California Health and Safety Code section 17926. PG&E downed power line guidance. AreaPro market data as of October 1, 2026 (median sale price read from chart, approximate).