NOAA National Hurricane Center

Returns every tropical cyclone NHC and CPHC currently have advisories out on, each with name, basin id, classification, intensity in knots, pressure, position, movement and links to the latest public advisory, forecast discussion, track cone and best-track GIS products.

Polygon features for the 34, 50 and 64 knot wind extents as of the current advisory for every active cyclone.

Point features for the named coastal breakpoints NHC uses to define the endpoints of tropical storm and hurricane watches and warnings, with name, state or country and position.

Polygon features giving the NHC cone of uncertainty for each active cyclone, the area the centre is likely to track through over the forecast period.

Point features for each forecast position of every active cyclone, carrying storm name, type, advisory number and date, maximum sustained wind, gusts, central pressure and Saffir-Simpson category.

Line features joining the forecast positions of every active cyclone into a single projected path per storm.

Polygon features for the forecast 34, 50 and 64 knot wind extents at each forecast time of every active cyclone.

Point features for each disturbance in the seven-day Graphical Tropical Weather Outlook, with its current location and formation chance.

Line features showing the expected direction of motion of each seven-day outlook disturbance.

Polygon features for the regions where a disturbance could develop into a tropical cyclone within seven days, shaded by formation probability.

Point features for each disturbance in the two-day Graphical Tropical Weather Outlook, with its current location and the chance of tropical cyclone formation.

Point features for the observed historical positions of every active cyclone so far this advisory cycle, with intensity, pressure and timestamp at each fix.

Line features joining the observed past positions of every active cyclone into one path per storm.

Polygon features for the observed 34, 50 and 64 knot wind radii at past fix times of each active cyclone.

Polygon features showing the cumulative area already swept by 34, 50 and 64 knot winds for each active cyclone.

Line features of the peak storm surge inundation forecast along the coast, in feet above ground level. Empty when no surge event is in progress.

Point features of the peak storm surge inundation forecast for an active US landfall threat, in feet above ground level. Empty when no surge event is in progress.

Polygon features of the peak storm surge inundation forecast areas, banded by height in feet above ground level. Empty when no surge event is in progress.

Lists the five NOAA map services carrying NHC data: NHC_tropical_weather, NHC_tropical_weather_summary, NHC_Breakpoints, NHC_PeakStormSurge and StormSurgeRisk.

Queries one layer of the per-storm tropical weather service, which carries the same products as the summary service but split into fixed basin slots AT1-AT5, EP1-EP5 and CP1-CP5 so a single storm can be pulled in isolation.

Returns the full layer tree of the per-storm tropical weather service: every basin slot AT1-AT5, EP1-EP5, CP1-CP5 with its forecast, past track, wind, arrival time and inundation sublayers and their numeric ids.

Queries one layer of the national Storm Surge Risk map service, the climatological worst-case inundation by hurricane category for the US East and Gulf coasts, Puerto Rico, Hispaniola, Yucatan, Hawaii, southern California, Guam and American Samoa.

Returns the metadata of one layer of the tropical weather summary service: its geometry type, extent, drawing info and the full field list with names, aliases, types and coded value domains.

Returns the layer tree of the tropical weather summary service: every layer id with its name, geometry type, parent group and scale range, covering outlook, forecast, past track, wind, arrival time, inundation and probabilistic wind layers.

Point features for the reference locations NHC uses when communicating storm surge values, with name and position.

Returns the layer tree of the national Storm Surge Risk service: every region (Atlantic, US East and Gulf Coast, Puerto Rico, Hispaniola, Yucatan, Hawaii, southern California, Guam, American Samoa) with its per-category boundary, footprint and image layer ids.

Polygon features giving the earliest reasonable arrival time of 34 knot winds, the time by which preparations should be complete.

Polygon features giving the most likely arrival time of 34 knot winds across the forecast area.

Line features for the coastline currently under tropical storm or hurricane watches and warnings, labelled with the watch or warning type.

Polygon features giving the cumulative probability of 34 knot (tropical storm force) sustained winds over the forecast period.

Polygon features giving the cumulative probability of 50 knot sustained winds over the forecast period.

Polygon features giving the cumulative probability of 64 knot (hurricane force) sustained winds over the forecast period.