The 2018 season

Hurricane Miriam (2018)

Hurricane Miriam reached Category 2 in the Eastern Pacific between August 25, 2018 and September 3, 2018, with a lowest pressure of 974 mb.

Track and intensity

The whole track of Hurricane Miriam, colored by strength, with the other storms of the 2018 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.

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The storm

Basin
Eastern Pacific
Dates
August 25, 2018 to September 3, 2018
Peak strength
Category 2, 85 kt (98 mph)
Lowest pressure
974 mb (28.76 inHg)
Landfall
No; closest approach 1261 km (784 mi)
Accumulated cyclone energy
10.6
Tropical-storm-force wind reached
100 nmi (185 km, 115 mi) from the center at its widest
Hurricane-force wind reached
20 nmi (37 km, 23 mi) from the center at its widest
Eyewall radius at its peak
20 nmi (37 km, 23 mi)
Overall size
180 nmi (333 km, 207 mi) to the outermost closed isobar
Peak gust in the best track
105 kt (121 mph)
Fastest the center moved
13 kt (15 mph)
Identifier
EP152018

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Aug 25, 12:0012.8N 120.8W25 kt1009 mbLow
Aug 25, 18:0012.9N 121.7W25 kt1009 mbLow
Aug 26, 00:0013.0N 122.6W30 kt1009 mbLow
Aug 26, 06:0013.2N 123.7W30 kt1008 mbTropical depression
Aug 26, 12:0013.5N 124.9W35 kt1005 mbTropical storm
Aug 26, 18:0013.7N 126.1W40 kt1004 mbTropical storm
Aug 27, 00:0013.8N 127.3W45 kt1002 mbTropical storm
Aug 27, 06:0013.9N 128.6W50 kt1000 mbTropical storm
Aug 27, 12:0013.9N 129.9W55 kt999 mbTropical storm
Aug 27, 18:0014.0N 131.1W55 kt999 mbTropical storm
Aug 28, 00:0014.0N 132.3W55 kt999 mbTropical storm
Aug 28, 06:0014.1N 133.5W55 kt999 mbTropical storm
Aug 28, 12:0014.1N 134.7W55 kt999 mbTropical storm
Aug 28, 18:0014.1N 135.8W50 kt1000 mbTropical storm
Aug 29, 00:0014.1N 136.9W50 kt1000 mbTropical storm
Aug 29, 06:0014.0N 137.9W55 kt999 mbTropical storm
Aug 29, 12:0014.0N 138.7W60 kt996 mbTropical storm
Aug 29, 18:0014.0N 139.4W65 kt992 mbHurricane
Aug 30, 00:0014.1N 140.1W65 kt988 mbHurricane
Aug 30, 06:0014.4N 140.8W70 kt985 mbHurricane
Aug 30, 12:0014.9N 141.3W70 kt985 mbHurricane
Aug 30, 18:0015.5N 141.5W75 kt982 mbHurricane
Aug 31, 00:0016.1N 141.5W75 kt981 mbHurricane
Aug 31, 06:0016.9N 141.5W80 kt978 mbHurricane
Aug 31, 12:0017.8N 141.3W80 kt978 mbHurricane
Aug 31, 18:0018.7N 141.2W85 kt974 mbHurricane
Sep 1, 00:0019.7N 140.9W85 kt974 mbHurricane
Sep 1, 06:0020.7N 141.0W75 kt980 mbHurricane
Sep 1, 12:0021.8N 141.1W65 kt986 mbHurricane
Sep 1, 18:0022.8N 141.3W50 kt997 mbTropical storm
Sep 2, 00:0023.8N 142.0W40 kt1004 mbTropical storm
Sep 2, 06:0024.7N 142.8W35 kt1005 mbTropical storm
Sep 2, 12:0025.4N 143.7W30 kt1006 mbTropical depression
Sep 2, 18:0026.0N 144.3W30 kt1008 mbLow
Sep 3, 00:0026.8N 145.3W30 kt1009 mbLow

Other Eastern Pacific storms of 2018

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.