The 2017 season

Unnamed tropical storm (2017)

Unnamed tropical storm peaked at 40 kt in the South Pacific between April 4, 2017 and April 11, 2017, with a lowest pressure of 993 mb.

Radar

Reflectivity now over Unnamed tropical storm. Open it to see storms, cones and warnings on the map.

Open the live radar with storms, cones and warnings

Radar mosaic and map layers from NOAA MRMS. Boundaries from the Iowa Environmental Mesonet.

The storm

Basin
South Pacific
Dates
April 4, 2017 to April 11, 2017
Peak strength
Tropical Storm, 40 kt (46 mph)
Lowest pressure
993 mb (29.32 inHg)
Landfall
No; closest approach 480 km (298 mi)
Accumulated cyclone energy
1.1
Identifier
SH142017

Deaths and damage

No source this site reads carries a casualty or damage figure for this storm.

Track

Time (UTC)PositionWindPressureStatus
Apr 4, 00:0016.8S 169.0W25 kt1004 mbTropical depression
Apr 4, 06:0017.8S 169.4W25 kt1004 mbTropical depression
Apr 4, 12:0018.5S 169.6W30 kt1000 mbTropical depression
Apr 4, 18:0019.0S 169.8W35 kt996 mbTropical storm
Apr 5, 00:0019.5S 170.1W35 kt996 mbTropical storm
Apr 5, 06:0019.9S 170.5W35 kt996 mbTropical storm
Apr 5, 12:0020.0S 170.6W35 kt998 mbTropical storm
Apr 5, 18:0020.2S 170.7W35 kt998 mbTropical storm
Apr 6, 00:0020.4S 170.5W35 kt1001 mbTropical storm
Apr 6, 06:0020.7S 170.1W35 kt996 mbTropical storm
Apr 6, 12:0021.1S 169.5W35 kt996 mbTropical storm
Apr 6, 18:0021.5S 168.8W35 kt996 mbTropical storm
Apr 7, 00:0022.1S 168.6W30 kt1000 mbTropical depression
Apr 7, 06:0021.9S 169.1W30 kt1000 mbTropical depression
Apr 7, 12:0021.8S 169.5W25 kt1004 mbTropical depression
Apr 7, 18:0021.9S 169.5W25 kt1004 mbTropical depression
Apr 8, 00:0022.0S 170.4W25 kt1004 mbTropical depression
Apr 8, 06:0021.9S 171.0W25 kt1004 mbTropical depression
Apr 8, 12:0021.7S 171.5W25 kt1004 mbTropical depression
Apr 8, 18:0021.7S 172.0W25 kt1004 mbTropical depression
Apr 9, 00:0021.9S 172.8W25 kt1004 mbTropical depression
Apr 9, 06:0022.4S 173.4W25 kt1004 mbTropical depression
Apr 9, 12:0023.0S 173.7W30 kt1000 mbSubtropical depression
Apr 9, 18:0023.8S 173.5W30 kt1000 mbSubtropical depression
Apr 10, 00:0024.5S 173.0W30 kt1000 mbSubtropical depression
Apr 10, 06:0024.8S 172.2W30 kt1000 mbSubtropical depression
Apr 10, 12:0025.1S 171.3W30 kt1000 mbSubtropical depression
Apr 10, 18:0025.5S 170.2W30 kt1000 mbSubtropical depression
Apr 11, 00:0025.8S 168.9W30 kt1000 mbSubtropical depression
Apr 11, 06:0025.9S 168.4W35 kt996 mbSubtropical storm
Apr 11, 12:0026.1S 168.1W35 kt996 mbSubtropical storm
Apr 11, 18:0025.8S 168.0W40 kt993 mbSubtropical storm

Other South Pacific storms of 2017

What this means

A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.

Sources

Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.