The 1999 season

Hurricane Gert (1999)

Hurricane Gert reached Category 4 in the North Atlantic between September 11, 1999 and September 23, 1999, with a lowest pressure of 930 mb.

Track and intensity

The whole track of Hurricane Gert, colored by strength, with the other storms of the 1999 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
North Atlantic
Dates
September 11, 1999 to September 23, 1999
Peak strength
Category 4, 130 kt (150 mph)
Lowest pressure
930 mb (27.46 inHg)
Landfall
No; closest approach 86 km (53 mi)
Accumulated cyclone energy
42.3
Fastest the center moved
28 kt (32 mph)
Identifier
AL091999

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Sep 11, 12:0012.6N 24.2W30 kt1006 mbTropical depression
Sep 11, 18:0012.9N 26.1W30 kt1005 mbTropical depression
Sep 12, 00:0013.3N 28.0W30 kt1006 mbTropical depression
Sep 12, 06:0013.8N 29.8W30 kt1005 mbTropical depression
Sep 12, 12:0014.2N 31.9W35 kt1001 mbTropical storm
Sep 12, 18:0014.8N 33.8W45 kt997 mbTropical storm
Sep 13, 00:0015.1N 35.6W55 kt995 mbTropical storm
Sep 13, 06:0015.4N 37.3W60 kt990 mbTropical storm
Sep 13, 12:0015.9N 39.2W65 kt984 mbHurricane
Sep 13, 18:0016.1N 40.8W70 kt979 mbHurricane
Sep 14, 00:0016.3N 42.2W75 kt976 mbHurricane
Sep 14, 06:0016.6N 43.5W85 kt973 mbHurricane
Sep 14, 12:0016.8N 44.6W90 kt968 mbHurricane
Sep 14, 18:0017.1N 45.8W95 kt962 mbHurricane
Sep 15, 00:0017.2N 46.9W100 kt955 mbHurricane
Sep 15, 06:0017.4N 47.9W110 kt948 mbHurricane
Sep 15, 12:0017.5N 48.9W115 kt940 mbHurricane
Sep 15, 18:0017.7N 50.0W125 kt933 mbHurricane
Sep 16, 00:0017.8N 50.8W130 kt930 mbHurricane
Sep 16, 06:0018.0N 51.7W130 kt933 mbHurricane
Sep 16, 12:0018.2N 52.6W125 kt941 mbHurricane
Sep 16, 18:0018.6N 53.4W120 kt940 mbHurricane
Sep 17, 00:0019.0N 54.2W115 kt944 mbHurricane
Sep 17, 06:0019.4N 55.0W125 kt942 mbHurricane
Sep 17, 12:0019.9N 55.7W125 kt945 mbHurricane
Sep 17, 18:0020.4N 56.3W115 kt950 mbHurricane
Sep 18, 00:0020.9N 56.8W110 kt953 mbHurricane
Sep 18, 06:0021.6N 57.1W105 kt954 mbHurricane
Sep 18, 12:0022.2N 57.4W105 kt953 mbHurricane
Sep 18, 18:0022.8N 57.8W105 kt950 mbHurricane
Sep 19, 00:0023.4N 58.1W110 kt947 mbHurricane
Sep 19, 06:0024.1N 58.7W115 kt946 mbHurricane
Sep 19, 12:0024.7N 59.2W115 kt946 mbHurricane
Sep 19, 18:0025.5N 60.0W115 kt946 mbHurricane
Sep 20, 00:0026.2N 60.7W115 kt947 mbHurricane
Sep 20, 06:0026.8N 61.4W110 kt947 mbHurricane
Sep 20, 12:0027.6N 62.4W105 kt948 mbHurricane
Sep 20, 18:0028.3N 62.7W100 kt949 mbHurricane
Sep 21, 00:0029.2N 62.9W95 kt950 mbHurricane
Sep 21, 06:0030.1N 62.8W90 kt952 mbHurricane
Sep 21, 12:0031.3N 62.6W85 kt955 mbHurricane
Sep 21, 18:0032.7N 62.1W80 kt958 mbHurricane
Sep 22, 00:0034.3N 61.2W75 kt960 mbHurricane
Sep 22, 06:0036.2N 60.4W75 kt961 mbHurricane
Sep 22, 12:0038.1N 59.4W70 kt962 mbHurricane
Sep 22, 18:0040.3N 57.9W65 kt963 mbHurricane
Sep 23, 00:0042.2N 55.6W60 kt964 mbTropical storm
Sep 23, 06:0044.6N 54.5W60 kt968 mbTropical storm
Sep 23, 12:0046.6N 51.9W60 kt972 mbExtratropical

Other North Atlantic storms of 1999

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.