County storm facts
Storm prep for San Francisco residents
San Francisco has had 147 flood insurance claims since 1978, 7 federal disaster declarations for fires, storms, floods or mudslides since 1995, and 4 mapped wildfires that started here since 2021.
Sources:
Local data from official sources, updated weekly. This snapshot: September 29, 2026. Alerts load live from the National Weather Service when you open this page.
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Source: National Weather Service alerts.
Forecasts for this county (NWS county zone CAC075) come from:
Source: National Weather Service (the exact query), data as of September 29, 2026.
Help right now
Live from FEMA and the Red Cross shelter list. Check your address on the home page for what’s nearest you.
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FEMA assistance
Open shelters
Evacuation status
Live evacuation status isn’t shown here yet. Your county’s evacuation map has the current orders and warnings.
Road conditions
Closures, chain controls and incidents on state highways.
Recent burn areas
4 fires that started in San Francisco since January 1, 2021 have a mapped perimeter.
Burned hillsides can’t soak up heavy rain, so mud and debris can rush downhill with little warning.
Source: NIFC WFIGS Interagency Fire Perimeters (the exact query), data as of September 29, 2026.
Flood history
147 flood insurance claims have been filed in San Francisco since 1978. 18 of them were for floods from 2017 to 2026.
The years with the most claims: 1982 (45), 1978 (24), 1980 (14).
This is history, not a prediction. These are National Flood Insurance Program claims, so they only count insured buildings.
FEMA’s data runs through September 8, 2026.
Source: FEMA OpenFEMA, NFIP Redacted Claims (the exact query), data as of September 29, 2026.
Federal disaster declarations
San Francisco has been part of 7 federal disaster declarations for fires, storms, floods or mudslides since 1995: 0 for fires and 7 for storms, floods or mudslides.
Most recent
- Severe Winter Storms, Straight-line Winds, Flooding, Landslides, and MudslidesApril 3, 2023 · DR-4699-CA
- Severe Winter Storms, Flooding, Landslides, and MudslidesMarch 10, 2023 · EM-3592-CA
- Severe Winter Storms, Flooding, Landslides, and MudslidesJanuary 14, 2023 · DR-4683-CA
FEMA’s ids start with DR for a major disaster, EM for an emergency and FM for fire management.
Source: FEMA OpenFEMA, Disaster Declarations Summaries (the exact query), data as of September 29, 2026.
Coast and tsunami
The California Geological Survey maps tsunami hazard areas in San Francisco. If you live, work or travel near the coast or bay shore, check whether your address is in one.
CGS tsunami hazard maps for San Francisco
Source: California Geological Survey tsunami hazard areas (the exact query), data as of September 29, 2026.
Rain in past strong El Niño winters
October–March rainfall at the Downtown San Francisco weather station in past strong El Niño winters, compared with its 1991–2020 normal.
Oct–Mar rainfall in past strong El Niño winters, as % of the 1991–2020 normal — Downtown San Francisco
6 of the 7 strong El Niño winters on record at Downtown San Francisco were wetter than normal. They ranged from 86% of normal (1991-92) to 191% (1997-98) — a tendency, not a guarantee.
| Winter | ONI (DJF) | Oct–Mar total | % of normal | Source |
|---|---|---|---|---|
| 1957-58 | 1.69 | 28.57 in | 136% | NOAA NCEI daily precipitation |
| 1972-73 | 1.55 | 33.67 in | 160% | NOAA NCEI daily precipitation |
| 1982-83 | 2.14 | 33.50 in | 159% | NOAA NCEI daily precipitation |
| 1991-92 | 1.54 | 18.01 in | 86% | NOAA NCEI daily precipitation |
| 1997-98 | 2.22 | 40.25 in | 191% | NOAA NCEI daily precipitation |
| 2015-16 | 2.50 | 21.36 in | 101% | NOAA NCEI daily precipitation |
| 2023-24 | 1.84 | 23.52 in | 112% | NOAA NCEI daily precipitation |
Source: NOAA NCEI (the exact query), data as of September 29, 2026.
Local help
Alerts sign-up, free sandbags, evacuation zones and help lines for this county.
- Emergency management officeSF Department of Emergency Management (opens in a new tab)
- Alerts sign-upAlertSF (opens in a new tab)Or text your ZIP code to 888-777
- 211 / 311SF 311 (unverified — search for it directly)311, or (415) 701-2311
- Evacuation mapGenasys Protect (opens in a new tab)
- SandbagsSF Public Works sandbags (opens in a new tab)
- Help finding food, shelter and other services211 California (opens in a new tab)Call 211
Power and internet outages
Power
- Outage mapPacific Gas & Electric (PG&E) (opens in a new tab)
- Planned power shutoffs (PSPS)CPUC Public Safety Power Shutoff resources (opens in a new tab)
Internet and phone
- Carrier statusAT&T outage map (opens in a new tab)
- Carrier statusSpectrum service status (opens in a new tab)
- Regional internet outagesCloudflare Radar — internet outages (opens in a new tab)
4 more we haven’t verified: search for them by name
- Carrier statusVerizon outage/status
- Carrier statusT-Mobile service status
- Carrier statusXfinity/Comcast support
- Carrier statusFrontier outage map
What about your street?
County numbers can’t tell you about your home. Check your address against the official flood, fire, landslide and tsunami maps.