El Niño Rain Season Prep for Solano and Napa Homes
What NOAA actually forecasts, what to do before the first big storm, where to get sandbags, and when wet floors need a restoration crew.
The short version
- NOAA gives a greater than 90% chance of a very strong El Niño this fall and winter.
- For Northern California, the weather service leans toward above-normal rain from December to February. That tilts the odds. It does not promise a flood.
- Clear gutters and drains, check the roof, look up your flood zone and sort flood insurance now, because a policy typically takes 30 days to start.
- If water gets in, photograph it, get it out and get things drying within 24 to 48 hours.
Is the El Niño talk real? Here is what the forecasters say, in their words, and what we would do in your house before the first heavy storm. Each forecast quote carries the date it was issued, and each one links to the original.
What NOAA and the weather service actually say
| Source | Issued | What it says |
|---|---|---|
| NOAA Climate Prediction Center, ENSO discussion | 10 Sep 2026 | El Niño Advisory in effect: "El Niño is strengthening, with a greater than 90% chance of a very strong event during the Northern Hemisphere fall and winter 2026-27." |
| NOAA Climate Prediction Center, 3-month outlook | 17 Sep 2026 | For October to December the wet lean covers "the southern half of California". Later in the winter, "probabilities favoring wetter-than-normal conditions increase across California." |
| National Weather Service Sacramento, ENSO briefing | 24 Sep 2026 | December to February: "NorCal Precipitation: Leaning Above Normal". Also: "Record Strength does not guarantee Record Impacts". |
The El Niño part is not hype. The rain part needs care. The NWS Sacramento briefing counts six very strong El Niño winters since 1950, and Northern California had two wet, two normal and two dry winters among them. Southern California had five wet ones. The same briefing says how much rain falls at one location is not reliably predictable a season ahead, and only becomes clearer in the forecast 1 to 2 weeks out.
The briefing also warns that El Niño raises sea levels, so a king tide or a winter storm brings a higher chance of coastal and Delta flooding. If your home sits near the water in Suisun City, Benicia or Vallejo, that line is the one to read twice.
These forecasts expire fast. CPC publishes its next ENSO discussion on 8 October 2026 and new seasonal outlooks on 15 October 2026, and says California's wet odds may be raised then. The NWS briefing is marked for use only until mid-October 2026. Check the links in the table for the latest numbers.
Before the rain: an eight-step checklist
- Clear drains, rain gutters and downspouts. It is on Napa County's flood preparedness page. Water from a blocked gutter has to go somewhere, and too often that is down the wall or under the house.
- Look at the roof now. Napa County says to inspect it for damage and arrange repairs before water starts to leak inside.
- Look up your flood risk. The Solano County Water Agency points homeowners to FEMA's Flood Map Service Center. Type in your address and see which zone you are in.
- Sort flood insurance early. The water agency says a flood policy "typically takes 30-days for a policy to go into effect" and that "Standard homeowner policies do not cover flooding." The California Department of Insurance also lists flood among the perils a homeowners policy generally does not cover. Read your own exclusions and ask your agent.
- Sign up for alerts. Alert Solano is the county's regional emergency notification system and sends alerts by text, email or phone. Napa County residents can sign up for Alert Napa County from the county's flood page.
- Know where your shut-offs are. The water agency's family plan includes the locations of utility shut-offs. Find the water main and the breaker panel while it is dry and light out, not at 2 a.m. with water on the floor.
- Move valuables up. The agency's advice is to move valuables to higher levels. In a room that has taken water before, we would also roll up area rugs, lift boxes off the floor and keep photo albums and paperwork out of a garage or basement.
- Photograph your rooms before anything happens. Pictures of floors, carpet and furniture in good condition make it easier to show your insurer what changed. A phone is enough.
Where to get sandbags
| Area | What the official page says |
|---|---|
| Solano County | "All locations are self serve. Please bring your own shovel." Check the county page for the current sites in your city. Solano County sandbag page |
| City of Napa | Free to City residents and business owners "the first Saturday of each month from November through April", 8 a.m. to 4 p.m. at 720 Jackson St. Self-serve, bring gloves and a shovel, "Limit of 10 bags per household". Extra distribution when the National Weather Service posts a flood or flash flood watch for the Napa River or its tributaries. City of Napa sandbag program |
| Napa County | Stations open "generally 48 hours before a storm" on a first-come, first-served basis, and "Most home improvement stores have sandbags for sale." Napa County flood preparedness |
Keep your expectations right. Solano County says properly filled and placed sandbags "can act as a barrier to divert moving water around instead of through buildings", and also that "Sandbag construction does not, however, guarantee a water tight seal."
During a heavy storm
The water agency's first rule is the one people break: "Do not walk, swim, or drive through flood waters. Turn Around. Don't Drown!" It also says to stay away from streams, rivers and flood control channels.
You can watch the water rise from your phone. The agency's page links the Solano County Water Agency flood monitoring stations, plus separate stations run by the City of Vacaville and the City of Fairfield. In the city of Napa, a National Weather Service flood watch for the Napa River is the signal that the city opens extra sandbag distribution.
If water starts coming in, this is the order we would follow:
- Stay out of any room where water is near outlets, cords or the panel, and call PG&E or an electrician.
- Stop what you safely can: clear a blocked drain or downspout, or move the water away from the door.
- Photograph the water and the damage before you move anything.
- Call your insurer, then a restoration company if the water is more than a towel can handle.
- Start getting the water out and the room drying, because the clock matters.
On that clock, the EPA says "In most cases, mold will not grow if wet or damp items are dried within 24-48 hours." The CDC says to clean up and dry your home quickly after a storm or flood, "within 24 to 48 hours if possible."
Rainwater from the roof vs floodwater from outside
They are different jobs. The EPA's flood cleanup page says damage from a pipe leak or rainwater "typically presents fewer hazards" than a flood. With a roof drip onto carpet, getting the water out and the room drying fast is most of the job.
Water that ran in under a door or up from the yard is floodwater. The CDC says "Floodwater can contain dangerous bacteria from overflowing sewage and agricultural and industrial waste," and its cleanup guide says to throw away what you cannot clean or dry quickly, a list that includes carpeting, carpet padding, rugs and upholstered furniture. It also says to "Remove and discard drywall and insulation that has been contaminated with sewage or floodwater."
The EPA adds that children, pregnant people and anyone with asthma or a weakened immune system should not take part in flood cleanup, and that "It may be best to get help from experienced and qualified professionals if you can."
When to call us
- Standing water on floors or carpet. That is emergency water extraction, and it is what our 24/7 line is for.
- Wet carpet pad, baseboards or drywall after the water is gone. Drying it out and tracking it with moisture readings is water damage restoration.
- A musty smell days or weeks after a storm. That is worth a look for hidden moisture and mold remediation.
- Water under the house. Our guide to crawl space vs subfloor water damage in Solano County explains where to look and what to do first.
We are a family-owned team based in Fairfield since 2013, with IICRC-certified technicians. We document the damage with photos and moisture readings and work with your adjuster. Call or text (707) 816-7103 any hour. Our first 4 hours after water damage guide covers what to do while you wait.
Rain season questions
Is a big El Niño really coming to Solano County this winter?
NOAA's Climate Prediction Center put out an El Niño Advisory on 10 September 2026 and gave a greater than 90% chance of a very strong event this fall and winter. That is about the ocean, not rain in your town. For Northern California, the National Weather Service in Sacramento leans toward above-normal rain for December to February, and its own briefing says record strength does not guarantee record impacts.
Does a strong El Niño mean Fairfield will flood?
No one can say that yet. NWS Sacramento counts six very strong El Niño winters since 1950, and Northern California had two wet, two normal and two dry ones among them. Its briefing also says rain totals for one location are not reliably predictable a season ahead. The odds lean wet for mid-winter, so do the prep now and watch the 1 to 2 week forecast.
When should I buy flood insurance?
Before the rain. The Solano County Water Agency says a flood policy typically takes 30 days to go into effect, and that standard homeowner policies do not cover flooding. The California Department of Insurance also lists flood among the perils a homeowners policy generally does not cover. Ask your own agent what your policy says.
Where can I get sandbags in Solano or Napa County?
Solano County lists self-serve sand and sandbag sites, and you bring your own shovel. The City of Napa hands them out free to city residents on the first Saturday of each month from November to April at 720 Jackson St, up to 10 bags per household. Napa County makes sandbags available during business hours, generally 48 hours before a storm. Solano County notes that sandbags do not guarantee a watertight seal.
How fast does a wet carpet need to be dried after a storm?
The EPA says that in most cases mold will not grow if wet or damp items are dried within 24 to 48 hours. The CDC gives the same 24 to 48 hour window for cleaning up and drying a home after a storm or flood. If water came in from outside, treat it as floodwater, which the CDC says can carry bacteria from overflowing sewage.
Should I clean up storm water myself?
A small amount of clean rainwater from a roof drip is often a homeowner job. Floodwater that came in from outside is different. The EPA calls flood cleanup difficult and dangerous work, says children, pregnant people and anyone with asthma or a weakened immune system should not take part, and says it may be best to get help from experienced and qualified professionals if you can.
Can I call you in the middle of a storm at night?
Yes. We answer (707) 816-7103 24 hours a day, seven days a week, by call or text, and water extraction is what that line is for. We work out of Fairfield and cover Solano County, Napa and the nearby Bay Area.
Water coming in right now?
Call or text us at any hour. Tell us where the water is and how it got in, and we will tell you what happens next.