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Next week of high tides — the actionable warning band
Each bar is a predicted high tide over the next seven days at the tracked US stations. Green means a normal high tide. Orange means within half a metre of NOAA's minor-flood threshold — pay attention. Red means at or above the threshold — streets can flood at high tide even on a sunny day. If the panel looks mostly empty, no flood-class tides are forecast this week, which is the good outcome.
Sunny-day floods are multiplying
Annual count of days water reached NOAA’s minor high-tide-flooding threshold — a slow-motion signal separate from hurricane surge.
Which coasts are flooding faster?
Ten-year average minor-flood days vs the latest NOAA year — sorted by acceleration. Taller orange bar = more nuisance floods recently.
How much higher by 2050?
IPCC AR6 central estimates for how much local sea level could rise by 2050, under two futures: a moderate-emissions path (the world makes some climate progress) vs a high-emissions path (fossil-heavy trajectory). Bars are illustrative reference constants — not live forecasts.
Coastal gauge map
What drives this
- Sea-level rise →Higher baseline water turns ordinary high tides into street floods.
- Hurricanes →Storm surge rides on top of the local tide and sea-level baseline.
- Ocean heat →Warmer oceans expand and help lift mean sea level.
What this drives
- Food-system shocks →Storm surge and saltwater intrusion can damage coastal crops and ports.
- Long-tail risk →Ice-sheet thresholds shape the flood baseline for centuries.
Tide gauges — live readings
| Station | Live level | Peak 24h | vs minor flood |
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How we know this
- Gauges & predictions: NOAA Tides & Currents CO-OPS API — 6-minute water levels and high/low tide predictions for thirteen US stations, compiled daily.
- Nuisance floods: NOAA High Tide Flooding annual counts (minor/moderate/major days per year, 1920–present where reported).
- 2050 bars: IPCC AR6 Sea Level Projection Tool central estimates (SSP2-4.5 and SSP5-8.5) — reference constants refreshed on assessment updates.
- Datum note: Live levels are NAVD; flood thresholds and tide predictions use MLLW. Our “near / above threshold” screen is deliberately coarse — not an official flood call.
- “Nearest gauge”: Uses ipapi.co IP geolocation in your browser; pick another station from the dropdown anytime.
- Not wired yet: NHC storm-surge/SLOSH, ECMWF/Copernicus surge, UK EA warnings, Venice CPSM — see About for scope.
- Official sources: NHC storm surge · NOAA T&C · How this page is built
Evacuation: For life-safety decisions, follow the National Hurricane Center and your local emergency management — never rely on this page alone.