Data sources

Anglrithm makes no weather, tide or ocean data of its own. It reads public feeds from the agencies and providers below, grades the forecasts against what the stations measured, and names the source and the age of every number it shows.

What it compiles

Anglrithm compiles 71 public data feeds from 35 agencies and providers into one view of South Florida water: seven weather models and three wave models graded against eight NOAA stations over 137,452 station-hours, 78 tide stations, 2,153 wrecks and reefs, and the satellite water, each number with its source and its age.

How the forecasts hold up against the stations is on the accuracy page, and the studies behind the guidance on the science page.

Feeds by agency

FWC

  • Artificial reefs, wrecks and obstructions: Chart, Where to go and Spot pages
  • Boating safety zones: Chart, Float plan and Rules and the Position card
  • Fish kill hotline reports: Water health
  • Fishing spots, reefs and wrecks: Chart
  • Manatee protection zones: Chart, Float plan and Rules and the Position card
  • Red tide samples: Water health, Chart and Home

NOAA CO-OPS

  • High tide bulletin: Home, Float plan and Tides
  • High tide flooding outlook: Home, Float plan and Tides
  • Inlet current predictions: Chart, Float plan, Tides, Spot pages and Weather
  • Tide predictions: Home, Tides, Spot pages, Weather, Float plan and Rules and the Position card
  • Tide station datums: Rules and the Position card, Chart and Float plan
  • Water level station observations: Home and Weather

NOAA CoastWatch

  • Satellite water temperature grid: Spot pages, Home and Chart
  • Sea level altimetry and currents: Temperature breaks
  • VIIRS chlorophyll: Chart and Temperature breaks
  • Water clarity, gap-filled reconstruction: Chart
  • Water clarity, NOAA-20 VIIRS: Chart and Water health
  • Water clarity, NOAA-21 VIIRS: Chart

NOAA National Weather Service

  • Coastal Waters Forecast: Home, Temperature breaks, Weather and Float plan
  • Forecast zone lookup: Chart and Weather
  • Gridpoint forecast: Weather and Float plan
  • Hazardous Weather Outlook: Home and Weather
  • Marine warnings, watches and advisories: Home, Weather, Float plan, Where to go and Plan and share cards
  • Sanctuary zones and park boundaries: Home, Weather and Float plan

Florida Department of Environmental Protection

  • Beach access points: Chart and Float plan
  • Beach fill and sand placement: Chart and Water health
  • Clean Marina locations (not shown until the licence is confirmed): Chart and Float plan
  • Inlet management areas: Float plan
  • Paddling trails: Chart

NOAA NDBC

  • Buoy and C-MAN observations: Home, Weather, Accuracy and Float plan
  • Buoy history: Home, Weather and Accuracy
  • Buoy ocean files: Spot pages
  • Buoy wave spectra: Weather and Accuracy
  • Station monthly medians: Spot pages

NOAA Office of Coast Survey

  • Artificial reefs, wrecks and obstructions: Chart, Where to go and Spot pages
  • BlueTopo survey bathymetry: Chart, Spot pages and Rules and the Position card
  • BlueTopo survey relief: Chart, Spot pages and Rules and the Position card
  • Electronic Navigational Charts: Chart
  • Fishing spots, reefs and wrecks: Chart

Open-Meteo

  • Four wave models: Home and Weather
  • HRRR next six hours: Home
  • Marine forecast: waves, swell and water: Home, Weather, Spot pages and Float plan
  • Seven-model weather forecast: Home, Weather, Spot pages, Float plan and Where to go

NOAA AOML

  • Floating weed detections: Temperature breaks, Chart and Where to go
  • Florida Current transport, cable record: Temperature breaks
  • Florida Current transport, daily: Temperature breaks

NOAA NCEI

  • Coastal elevation models: Chart, Spot pages and Rules and the Position card
  • Coastal Relief Model: Chart
  • Storm Events database: Weather and Float plan

Broward County

  • Artificial reefs, wrecks and obstructions: Chart, Where to go and Spot pages
  • Fishing spots, reefs and wrecks: Chart

Florida Department of Health

  • Healthy Beaches results: Water health
  • Healthy Beaches sampling points: Water health

MarineCadastre

  • Daily vessel positions, relative index only: Float plan, Spot pages and Chart
  • Vessel transit counts: Chart

Miami-Dade County

  • Artificial reefs, wrecks and obstructions: Chart, Where to go and Spot pages
  • Fishing spots, reefs and wrecks: Chart

National Park Service

  • Everglades markers: Chart and Float plan
  • Fishing spots, reefs and wrecks: Chart

NOAA Climate Prediction Center

  • 6 to 10 and 8 to 14 day outlooks: Weather and Home
  • Global tropics hazards outlook: Weather and Float plan

NOAA Fisheries

  • Billfish tag releases: Species cards and Temperature breaks
  • Recreational catch intercepts: Species cards

NOAA Florida Keys National Marine Sanctuary

  • Fishing spots, reefs and wrecks: Chart
  • Florida Keys sanctuary zones: Chart, Rules and the Position card, Where to go and Spot pages

NOAA National Hurricane Center

  • Active storms, advisories and the cone: Weather
  • Hurricane season climatology: Weather and Home

Palm Beach County

  • Artificial reefs, wrecks and obstructions: Chart, Where to go and Spot pages
  • Fishing spots, reefs and wrecks: Chart

US Army Corps of Engineers

  • Water control structure flows: Water health and Home
  • Wave hindcast: Temperature breaks, Weather and Float plan

Esri

  • Ocean and imagery basemaps: Chart, Spot pages and Weather

FAU Harbor Branch Oceanographic Institute

  • Indian River Lagoon water quality sondes: Water health and Spot pages

GEBCO

  • GEBCO depth relief: Chart

Iowa Environmental Mesonet

  • NEXRAD radar tiles: Weather and Chart

Martin County

  • Fishing spots, reefs and wrecks: Chart

NASA JPL

  • MUR satellite water temperature: Chart and Temperature breaks

NOAA Coral Reef Watch

  • Coral Reef Watch reef stations: Home, Temperature breaks and Species cards

NOAA NCCOS

  • Fishing spots, reefs and wrecks: Chart

NOAA NERRS

  • Buoy ocean files: Spot pages

NOAA Physical Sciences Laboratory

  • Daily water temperature normals: Home, Spot pages and Weather

NOAA Regional Climate Centers

  • Air temperature and rain normals: Weather, Home and Float plan

St. Lucie County

  • Fishing spots, reefs and wrecks: Chart

US Energy Information Administration

  • Fuel prices: Float plan and Home

USGS

  • National Hydrography Dataset: Chart

71 public feeds from 35 agencies and providers, from the app's source registry; a feed published by two agencies is listed under both. Beside them the app computes 19 products of its own: Best Bets, the accuracy scoreboard, the receipts, the detected breaks and the like.

Sources and their terms

Weather, marine and ocean data

  • Open-Meteo forecast and marine APIs (terms)
    Wind, gust, pressure, air, rain, cloud
  • Have I Been Pwned, Pwned Passwords range API (terms)
    Rejects passwords found in known breaches at sign-up, reset and change
  • NWS api.weather.gov (terms)
    Marine zone alerts, Coastal Waters Forecast text, zone lookup for a custom spot, the gridpoint forecast for a public place
  • NWS Graphical Hazardous Weather Outlook
    The hazard tick on each day of Home's score strip, the office's level name and definition verbatim
  • Federal Register documents API
    The daily query for Coast Guard rules and notices under 33 CFR 100 and 165 that feed the "On the water" timeline
  • GovInfo
    The HTML of each Federal Register document, parsed for the WGS 84 vertices and the enforcement hours of a safety zone
  • USCG NAVCEN Maritime Safety Information export
    Confirms a CFR event with its dates and area on the timeline
  • NOAA NDBC (terms)
    Live buoy wind, gust, pressure, waves, water temperature
  • NOAA National Hurricane Center (terms)
    The tropical panel on the Weather page: active Atlantic storms with the latest advisory, the forecast cone, the five-day track and forecast points, and the...
  • NOAA CO-OPS Tides and Currents (terms)
    Tide predictions, 78 stations
  • NOAA CO-OPS current predictions
    The Weather day strip's inlet current lane: max and slack events at the nearest of nine inlet and pass stations within 6 nm
  • NOAA CO-OPS observations (terms)
    Live wind, gust, air and water temperature and pressure at the NOS gauges Virginia Key 8723214, Lake Worth Pier 8722670, Key West 8724580 and, since October 15...
  • USGS GNIS
    Names and positions of six southwest Gulf passes for the water names and, since October 15, 2026, as the Best Bets Gulf region's run origins and of Gordon Pass...
  • NWS marine zone polygons
    The Gulf coast zones GMZ656, GMZ676, GMZ836, GMZ853, GMZ856, GMZ873 and GMZ876, simplified
  • Satellite water check
    The accuracy page's "Satellite water against the buoys" table: the JPL MUR analysis at each station's nearest ocean pixel against the station's water...
  • Seas grading record
    The accuracy page's "Seas, the moving record" table and the B14 line on the Weather and spot pages: the four wave models' wave height, mean period and peak...
  • SST forecast record (terms)
    The accuracy page's "Sea temperature forecast against the satellite" card: the CMEMS global physics forecast's sea temperature at 0.494 m for one to five days...
  • Forecast replay
    The accuracy page's "Forecast replay": for a past day at a verifying station, each model's wind or wave height 24, 48 and 72 hours ahead against what the buoy...
  • Unclamped water grid
    Satellite water temperature at each Best Bets place: the 0.02 degree block mean of the same pass
  • NOAA CoastWatch ERDDAP
    ACSPO and MUR SST, chlorophyll
  • NOAA CoastWatch ERDDAP
    NOAA-21 VIIRS chlorophyll, 750 m, daily, a single day's observation: the chart's and Spots map's water colour fill and the Breaks page's colour-change layer...
  • NOAA CoastWatch ERDDAP
    Sentinel-3A and 3B OLCI chlorophyll, 300 m, daily, sectors EH and FH stitched at 80 W: the water colour fill when NOAA-21 has no pass with water inside 3 days
  • NOAA AOML OceanWatch ERDDAP
    Sargassum detection
  • NOAA FKNMS 2026 zone boundaries
    The closed-area chips on a spot's card: the 41 zones whose
  • Federal and state rule text: 50 CFR 622.182 and 622.183, FWC rules 68B-6.004 F.A.C. and 68B-7 F.A.C.
    The SMZ, MPA and seasonal polygons and rule sentences behind the closed-area chips
  • FDEP geodata: Public Beach Access Sites, the Florida Circumnavigational Saltwater Paddling Trail, Coastal Inlet Management and Sand Placement Events
    The chart's Beach access and paddling, and Inlets and beach fill overlays
  • NPS Everglades National Park waterway markers
    The chart's Everglades markers overlay, each mark with its NPS survey date
  • FWC Biscayne National Park rules, Seasonal Closed Area (terms)
    The bonefish pre-spawning closure on the chart's zones layer, and left out of Best Bets in a run whose week reaches the season
  • FWC Atlantic red snapper season page and NOAA Fisheries bulletin FB26-052
    The two dated red snapper rule rows
  • FWC 2025 South Atlantic red snapper season report
    The St. Lucie and Fort Pierce inlet rows and the statewide private-boat totals under the red snapper rule rows, drawn as interval bars with the same numbers in...
  • NOAA Coral Reef Watch virtual stations
    The reef water against normal chart: daily SST, anomaly, hot spot, degree heating weeks and the bleaching alert level since 1985, the monthly means and MMM
  • NOAA Fisheries MRIP intercept microdata and wave-level estimates
    The season clock: catch per angler trip by month from the Southeast Florida intercepts, five years pooled, with n, standard error and PSE
  • E.U. Copernicus Marine Service sea level altimetry
    The Gulf Stream distance history: the northward geostrophic speed along four inlet latitudes, the edge and the axis by day
  • NASA JPL MUR SST v4.1 through NOAA CoastWatch ERDDAP
    The Gulf Stream distance history: the SST edge along the same transects
  • Sailfish tournament results, transcribed facts
    The sailfish season curve's validation dots: dates, boats, releases per event with a source link per row
  • NOAA NDBC historical standard meteorological files
    Day-of-year percentiles of wind, seas and water temperature per station, the ribbon behind Home's sparklines
  • NOAA NDBC historical standard meteorological and ocean files and the station table
    The station medians on the spot page's Stations card: "October median, 2016-2025" of daily means of water, wind, seas and salinity per station and month over...
  • USACE Wave Information Studies Atlantic hindcast
    Week-of-year seas, wind and period percentiles and calm-day odds per break
  • NOAA Regional Climate Centers ACIS
    Air temperature and rain against the 1991-2020 normals, year to date, for Miami, Fort Lauderdale, West Palm Beach and Key West
  • NOAA Climate Prediction Center 6-10 and 8-14 day outlooks and Global Tropics Hazards KML
    The two-week outlook chip and the weeks 2-3 tropical formation line
  • NOAA National Hurricane Center climatology page
    The season dates and Table 1, parsed on each run
  • NOAA Physical Sciences Laboratory, OISST v2.1 daily long-term mean 1991-2020 (terms)
    The 1991-2020 daily water temperature normal over the South Florida box: the third water tier behind the satellite pass and the marine model, labelled...
  • NOAA CO-OPS derived product API, high tide flooding and the high tide bulletin
    Annual flood day counts and the coming year's daily flood likelihood at Virginia Key, Lake Worth Pier and Key West: the king tide calendar
  • NOAA NCEI Storm Events database
    Marine events by month in the South Florida marine zones since 2014: waterspouts, marine thunderstorm wind and the rest
  • US EIA open data API
    Weekly Miami and Florida gasoline and Florida diesel prices for the trip fuel line
  • NOAA Fisheries SWFSC billfish tag releases
    Releases by week of year inside the South Florida box, with n
  • FWC-FWRI red tide samples
    The chart's Red tide samples marks: Karenia brevis samples from the last eight days, FWC's abundance category, the sample date and the distance from the...
  • FWC Fish Kill Hotline reports
    The chart's Fish kill reports marks: calls from the last ten days, private ponds, private canals, retention ponds and stormwater dropped
  • Florida Department of Health, Healthy Beaches Program: sampling points and the public results pages
    The chart's Beach bacteria marks: the latest enterococci sample at each point, FDOH's rating bands and FDOH's own advisory column, with the sample date
  • USACE CWMS Data API
    The release chips: the 14-day mean flow at S-79 and S-80 against the final RECOVER 2020 Northern Estuaries salinity envelope, linked to the documentation sheet...
  • USACE Jacksonville District water management pages and morning reports
    Lake Okeechobee stage against its 1965-2007 normal, the release schedule, the 7-day outflow split, structure flows and stages, South Dade and C-44, and each...
  • USACE Jacksonville District camera stills
    Stills of S-79, S-80, S-308 and S-77 for the structures layer
  • SECOORA ERDDAP live station reads and the station catalog
    The live station plumbing: NPS Everglades, NOAA CO-OPS, NWS and NDBC stations and USF COMPS C10 and C13 at launch
  • USGS Water Data OGC API v1 and USGS CWIS
    Live series at 224 surface-water sites
  • SECOORA ERDDAP daily means for the almanac and NOAA NDBC historical and realtime2 files for six buoys and C-MAN stations
    The almanac: day-of-year normals, percentile bands, anomaly decay and the held-out backtest at 52 stations
  • NOAA NDBC realtime2 ocean file for Rookery Bay NERRS Lower Henderson Creek
    The newest salinity, dissolved oxygen and water temperature on the spot water card within 15 nm of the sonde, labelled guidance and never in the score
  • OBIS, Ocean Tracking Network datasets FSUGG and COBREPRO
    Nothing on screen yet. Cited in the curated sources file
  • Bonefish and Tarpon Trust bottom-temperature loggers on SECOORA ERDDAP
    Tuning only: calibrating flats bottom temperature against satellite water in three regions by month
  • Sportfish program findings
    The "From the research programs" lines in the species cards' "What the science says" fold: 87 findings for the app's fish in our own words, each linked to its...
  • FDEP numeric nutrient criteria
  • Water Quality Portal copy of FDOH beach results
  • FAU Harbor Branch IRLON, the Indian River Lagoon Observatory Network of Environmental Sensors
    The spot page's chlorophyll note: each LOBO sonde's newest good chlorophyll reading, kept only inside an FDEP estuary segment with an annual-mean criterion and...
  • NOAA AOML Western Boundary Time Series, daily Florida Current transport at 27N: the cable file and the pressure-gauge file
    One line under the Bluewater page's Gulf Stream chart: the newest valid daily transport with its own date and age, said to be a past day while the series runs...
  • NOAA CoastWatch Kd490: NOAA-20 and NOAA-21 VIIRS daily merges and the DINEOF reconstruction
    The chart's Water clarity fill: the newer VIIRS merge, the DINEOF reconstruction only when neither answers, labelled "reconstructed "

Charts, basemaps and bathymetry

  • GEBCO WMS (terms)
    Shaded depth basemap to zoom 11
  • GEBCO WMS GetFeatureInfo
    The last hop of the depth chain at a tapped point, one 15 arc-second cell, when BlueTopo, CUDEM and the Coastal Relief Model have no value
  • NOAA BlueTopo through nowCOAST
    The first hop of the depth chain and the chart's Depth shading and Survey relief layers, EPSG:3857 from zoom 10
  • NOAA NCEI DEM mosaic identify
    The second hop of the depth chain
  • NOAA Coastal Relief Model Vol 3 2023 through THREDDS
    The third hop of the depth chain
  • NOAA CO-OPS station datums
  • NOAA ENC MaritimeChartService
    Official chart alternate
  • NOAA Marine Cadastre AIS Vessel Transit Counts
    Vessel traffic layer
  • NOAA Marine Cadastre daily AIS positions
    Quiet-and-good crowding index: a weekly Action streams whole days, keeps the South Florida box, publishes a relative index only, never a count
  • NOAA NGS Continually Updated Shoreline Product, cells N25W085 and N20W085 (terms)
    The hard-land outline drawn over every fill on the chart, the Breaks map, Home, Where, the radar loop and Spots, baked once
  • OpenStreetMap
    The same outline for the Bahamas inside the box, where CUSP has no data
  • USGS The National Map
    Land imagery under the Breaks chart, baked once
  • USGS The National Map, National Hydrography Dataset
    The chart's inland water overlay: canals, lakes, rivers and ponds drawn live in one blue on every base, because no depth or water temperature reaches them
  • NASA GIBS
    Land imagery outside the United States in the same baked file
  • NASA GIBS
    The shoreline that cuts the baked land imagery
  • ETOPO 2022 15 arc-second relief, baked (terms)
    The weed layer's shallow-water mask and the depth check that leaves current samples over water under 20 m out

Structure data (public records)

  • FWC Artificial Reef Locations in Florida (terms)
  • Miami-Dade County DERM artificial reefs
  • Broward County artificial reefs
  • Palm Beach County ERM Environment Open Data
  • NOAA ENC wrecks and obstructions

Fishing spots layer

  • Martin County artificial reefs
  • St. Lucie County artificial reefs
  • NOAA Florida Keys National Marine Sanctuary Shipwreck Trail
  • NOAA ENC rocks
  • NOAA ENC named sea areas, with the charted fish haven areas
  • NOAA FKNMS mooring buoys
  • Biscayne National Park mooring buoy table
  • Miami-Dade County reef buoys
  • Palm Beach County mooring buoy sites
  • NOAA NCCOS deep-sea coral assessment, undersea features
  • FWC Florida Boat Ramp Inventory
  • NPS Public POIs

From the project's record of sources and terms, revised October 16, 2026: the sources in use, what each is used for, and a link to its terms where it publishes them. Nothing here is a legal opinion.

Attribution

  • Weather data by Open-Meteo.com (CC BY 4.0).
  • Weed detection: contains modified Copernicus Sentinel data, processed by NOAA AOML.
  • Depth relief: GEBCO Compilation Group, GEBCO grid; not for navigation.
  • Structure: FWC and the Miami-Dade, Broward and Palm Beach County reef programs, and the NOAA Office of Coast Survey charts, with the source and retrieval date on every card.
  • Coastline outside the United States: © OpenStreetMap contributors.

Questions about a source: [email protected].

Display only, not for navigation. Every figure here names its source; check the NWS marine forecast and the posted rules before you leave the dock.