The 2018 season

Tropical Storm Ampil (2018)

Tropical Storm Ampil peaked at 55 kt in the Western Pacific between July 17, 2018 and July 26, 2018, with a lowest pressure of 982 mb, and made landfall.

Track and intensity

The whole track of Tropical Storm Ampil, 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
Western Pacific
Dates
July 17, 2018 to July 26, 2018
Peak strength
Tropical Storm, 55 kt (63 mph)
Lowest pressure
982 mb (29.00 inHg)
Landfall
Yes
Accumulated cyclone energy
3.6
Tropical-storm-force wind reached
180 nmi (333 km, 207 mi) from the center at its widest
Eyewall radius at its peak
60 nmi (111 km, 69 mi)
Overall size
390 nmi (722 km, 449 mi) to the outermost closed isobar
Peak gust in the best track
55 kt (63 mph)
Fastest the center moved
27 kt (31 mph)
Identifier
WP122018

Radar at RODN as it neared land, Jul 21, 00:00 UTC

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Jul 17, 12:0018.4N 127.9E1000 mbTropical storm
Jul 17, 18:0018.9N 128.0E1000 mbTropical storm
Jul 18, 00:0019.2N 128.4E1000 mbTropical storm
Jul 18, 06:0019.5N 129.0E1000 mbTropical storm
Jul 18, 12:0019.6N 129.4E30 kt1000 mbMD
Jul 18, 18:0019.8N 130.1E35 kt996 mbMD
Jul 19, 00:0020.1N 130.9E40 kt993 mbMD
Jul 19, 06:0020.6N 131.5E40 kt992 mbTropical storm
Jul 19, 12:0021.1N 131.7E40 kt989 mbTropical storm
Jul 19, 18:0021.9N 131.4E45 kt989 mbTropical storm
Jul 20, 00:0022.6N 131.0E45 kt989 mbTropical storm
Jul 20, 06:0023.3N 130.6E45 kt989 mbTropical storm
Jul 20, 12:0024.4N 129.8E45 kt987 mbTropical storm
Jul 20, 18:0025.4N 128.9E45 kt985 mbTropical storm
Jul 21, 00:0026.6N 127.9E45 kt986 mbTropical storm
Jul 21, 06:0027.7N 126.8E45 kt983 mbTropical storm
Jul 21, 12:0028.8N 125.6E45 kt985 mbTropical storm
Jul 21, 18:0029.8N 124.0E50 kt985 mbTropical storm
Jul 22, 00:0030.8N 123.0E55 kt982 mbTropical storm
Jul 22, 06:0031.9N 122.0E55 kt982 mbTropical storm
Jul 22, 12:0032.6N 120.9E45 kt989 mbTropical storm
Jul 22, 18:0033.5N 119.7E40 kt993 mbTropical storm
Jul 23, 00:0034.4N 119.0E35 kt991 mbTropical storm
Jul 23, 06:0035.4N 118.4E30 kt989 mbTropical depression
Jul 23, 12:0036.6N 117.8E30 kt1000 mbTropical depression
Jul 23, 18:0037.7N 117.5E25 kt1004 mbTropical depression
Jul 24, 00:0039.1N 117.5E25 kt1004 mbTropical depression
Jul 24, 06:0040.1N 118.4E25 kt1004 mbTropical depression
Jul 24, 12:0041.6N 120.2E25 kt1004 mbTropical depression
Jul 24, 18:0043.7N 121.6E996 mbMixed
Jul 25, 00:0045.3N 124.6E996 mbExtratropical
Jul 25, 06:0046.4N 127.6E996 mbExtratropical
Jul 25, 12:0047.1N 131.4E998 mbExtratropical
Jul 25, 18:0047.7N 135.0E1000 mbExtratropical
Jul 26, 00:0048.1N 137.0E1002 mbExtratropical
Jul 26, 06:0048.5N 138.8E1004 mbExtratropical

Other Western 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.