Overall Green alert Tropical Cyclone for GRETEL-20
in Norfolk Island, New Caledonia, New Zealand

Event Summary

Tropical Cyclone GRETEL-20 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Updated: this report is based on advisory number 6: (17 Mar 2020 09:20).

Name GRETEL-20
From - To 14 Mar - 16 Mar
Exposed countries Norfolk Island, New Caledonia, New Zealand
Exposed population No people in Category 1 or higher
Maximum wind speed 102 km/h, Tropical storm
Maximum storm surge 0.3
Vulnerability Medium (New Caledonia)

Weather forecast centres

Regional Specialized Meteorological Centres (RSMCs), Tropical Cyclone Warning Centres (TCWCs).


RSMC Nadi-Tropical Cyclone Centre/Fiji Meteorological Service

TCWC-Brisbane/Bureau of Meteorology, Australia

TCWC-Port Moresby/National Weather Service, Papua New Guinea

TCWC-Wellington/Meteorological Service of New Zealand

National Meteorological and Hydrological Services (NMHSs)

Meteo France Nouvelle Calédonie, National Weather Service of New Caledonia


Source: NOAA-GFS(Meteo); GDACS/JTWC (TcTrack )

Source: NOAA-GFS(Meteo); GDACS/JTWC (TcTrack )

Source: NOAA-GFS(Meteo); GDACS/JTWC (TcTrack )

Source: NOAA-GFS(Meteo); GDACS/JTWC (TcTrack )

Source: NOAA-GFS

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