Weather forecast centres
Regional Specialized Meteorological Centres (RSMCs), Tropical Cyclone Warning Centres (TCWCs).
RSMC Honolulu-Hurricane Center/NOAA/NWS, USA
http://www.prh.noaa.gov/hnl/cphc/
National Meteorological and Hydrological Services (NMHSs)
National Oceanic and Atmospheric Administration, National Weather Service of U.S.A.
http://www.weather.gov