More for California: Highest flood risk cities · California live outlook
Current risk outlook
Flooding and heavy rain risk for Tamalpais-Homestead Valley, CA.
Live view assembled just now. Source update times vary; cached data may be delayed or incomplete.
This view focuses on street flooding, ponding in low-lying areas, and how heavy rain tends to behave around this city.
Live risk outlook
LOWLow
Next 6–24 hours: Today: Low (10/100) · Rain 0% · 0.0 in · Max wind 0 to 7 mph.
2 active alerts nearby.
Sources: NOAA, NWS, SPC, NHC, FEMA, USGS.
Local decision support
Next 24–72 hours: risk-to-action packet
Baseline
40/100
Moderate long-term exposure
Live signal
Low
Current source-derived signal
Official alerts
2
active local alerts
Practical, non-emergency steps
- STEP 1
Reduce water entry points
Clear gutters, drains, and low-area grates when it is safe to do so, and move valuables from low storage areas.
- STEP 2
Document before conditions change
Keep current photos of the exterior and important records in an accessible place for a later coverage conversation.
- STEP 3
Follow local flood direction
Do not use this packet for route, evacuation, or floodwater decisions; follow official local and NWS alerts instead.
Official source links
This packet supports preparation conversations. It is not an emergency alert, evacuation instruction, insurance quote, property inspection, or medical guidance. Follow official local instructions for time-sensitive decisions.
Historical risk score
Long-term baseline derived from historical hazard activity.
40
/ 100
For typical homes located in Tamalpais-Homestead Valley, CA.
Baseline context
FEMA NFHL flood zones: 13 features intersect this tile.
Compare other local risks
See how Tamalpais-Homestead Valley scores across each hazard model.
City snapshot
All hazards combined
Wind risk
Roof stress and gust-driven damage
AQI risk
Ingested air quality and AQI snapshot
Lightning risk
Thunderstorm and strike exposure
Wildfire risk
Fuels, dryness, and fire potential
Tornado risk
Historic tornado corridor exposure
Hail risk
Hail frequency and roof impact potential
Local historical hazard map
Tamalpais-Homestead Valley, CA
Click a tile to update scores. These layers show long-term historical baseline risk, not live warnings or short-term forecast risk.
Live flood alerts & official forecast (NWS)
Forecast office: MTR · radar KMUX
Active alerts near Tamalpais-Homestead Valley
Beach Hazards Statement
Effective local time
Beach Hazards Statement issued November 11 at 12:14AM PST until November 13 at 6:00PM PST by NWS San Francisco CA
Everyone should remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure. Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.
High Surf Warning
Effective local time
High Surf Warning issued November 11 at 12:14AM PST until November 15 at 4:00AM PST by NWS San Francisco CA
Everyone should remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure. Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.
Protect your home before the next storm
Turn today’s risk into a checklist for your home.
Coverage request
Keep local storm exposure with the coverage questions you want to ask.
Home-protection request
Record roof, window, or hardening work you are considering around local risk.
Emergency prep essentials guide
Build a storm kit and action checklist in 30 minutes.
Flood intelligence snapshot
FEMA flood zones (NFHL)
Dominant zone: X (70% of features)
SFHA share: 26% (feature-weighted)
NFHL features in tile: 209
Tile risk label: Moderate
Source: FEMA NFHL (MapServer).
Nearest river gauge (USGS)
REDWOOD C A HWY 1 BRIDGE A MUIR BEACH CA (11460151)
Stage: 0.97 ft
Discharge: 0 ft3/s
Observed: local time
Distance from Tamalpais-Homestead Valley: 2 mi
Source: USGS NWIS (instant values).
Soil saturation (model)
Soil moisture: 13% volumetric
Last 24h rain: 0.00 in
Updated: local time
Source: Open-Meteo soil model (proxy).
Protect your home before the next storm
Turn today's flood exposure into a checklist for drains, valuables, and coverage in Tamalpais-Homestead Valley, CA.
Coverage request
Keep local storm exposure with the coverage questions you want to ask.
Home-protection request
Record roof, window, or hardening work you are considering around local risk.
Emergency prep essentials guide
Build a storm kit and action checklist in 30 minutes.
5-day flood & rain outlook
Today
LOWRain chance: 0% · 0.0 in
Max wind: 0 to 7 mph
Risk score: 10/100
Tomorrow
LOWRain chance: 6% · 0.1 in
Max wind: 5 to 10 mph
Risk score: 12/100
Fri
ELEVATEDRain chance: 99% · 0.9 in
Max wind: 17 to 28 mph
Risk score: 62/100
Sat
LOWRain chance: 41%
Max wind: 7 mph
Risk score: 26/100
Sun
MODERATERain chance: 79%
Max wind: 7 to 18 mph
Risk score: 42/100
Outlook blends NWS forecast, WPC QPF totals, and Excessive Rainfall Outlook categories.
Historical flooding exposure
Local flood data facts
Data from FEMA NFHL, USGS gauges, and Open-Meteo soil moisture.
Historical flooding exposure in Tamalpais-Homestead Valley
- Lowest-lying streets and drainage chokepoints tend to flood first during heavy rain.
- Long-duration rainfall can raise ponding risk even without a named storm.
- Local elevation and canal/river networks can amplify or reduce flood impacts.
Flood & storm risk FAQs for Tamalpais-Homestead Valley
Does Tamalpais-Homestead Valley flood often?
Flooding risk depends on elevation, drainage, and rainfall intensity. This model summarizes localized flood patterns from public datasets.
What causes street flooding without a storm surge?
Short bursts of heavy rain can overwhelm drains; longer events can saturate soils and keep water standing even after rain ends.