The 1999 season

Typhoon Olga (1999)

Typhoon Olga reached Category 1 in the Western Pacific between July 26, 1999 and August 5, 1999, with a lowest pressure of 970 mb, and made landfall.

Radar

Reflectivity now over Typhoon Olga. 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
Western Pacific
Dates
July 26, 1999 to August 5, 1999
Peak strength
Category 1, 80 kt (92 mph)
Lowest pressure
970 mb (28.64 inHg)
Landfall
Yes
Accumulated cyclone energy
8.3
Identifier
WP111999

Radar at RODN as it neared land, Aug 1, 12:00 UTC

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Jul 26, 18:005.5N 138.7E20 ktNot reported
Jul 27, 00:005.9N 138.5E20 ktNot reported
Jul 27, 06:006.7N 138.1E20 ktNot reported
Jul 27, 12:007.3N 137.9E20 ktNot reported
Jul 27, 18:008.2N 137.5E20 ktNot reported
Jul 28, 00:009.3N 136.8E20 ktNot reported
Jul 28, 06:0010.0N 136.2E20 ktNot reported
Jul 28, 12:0010.9N 135.6E20 ktNot reported
Jul 28, 18:0011.7N 135.2E20 ktNot reported
Jul 29, 00:0012.5N 134.8E25 kt1000 mbTropical storm
Jul 29, 06:0013.5N 134.4E30 kt1000 mbTropical storm
Jul 29, 12:0014.4N 134.0E30 kt1000 mbTropical storm
Jul 29, 18:0015.5N 133.7E35 kt998 mbTropical storm
Jul 30, 00:0016.9N 133.6E40 kt996 mbTropical storm
Jul 30, 06:0018.9N 133.3E40 kt994 mbTropical storm
Jul 30, 12:0020.3N 132.4E45 kt990 mbTropical storm
Jul 30, 18:0021.0N 131.8E55 kt985 mbTropical storm
Jul 31, 00:0021.7N 131.2E60 kt985 mbTropical storm
Jul 31, 06:0022.7N 130.8E60 kt985 mbTropical storm
Jul 31, 12:0023.2N 130.4E65 kt985 mbTropical storm
Jul 31, 18:0023.7N 130.0E70 kt980 mbTropical storm
Aug 1, 00:0024.7N 129.2E70 kt980 mbTropical storm
Aug 1, 06:0025.5N 128.7E75 kt975 mbTropical storm
Aug 1, 12:0026.4N 127.9E65 kt970 mbTropical storm
Aug 1, 18:0027.2N 127.2E75 kt975 mbTropical storm
Aug 2, 00:0027.8N 126.5E75 kt975 mbTropical storm
Aug 2, 06:0028.7N 126.3E75 kt975 mbTropical storm
Aug 2, 12:0030.0N 126.0E80 kt975 mbTropical storm
Aug 2, 18:0031.6N 126.0E75 kt975 mbTropical storm
Aug 3, 00:0033.5N 126.0E70 kt975 mbTropical storm
Aug 3, 06:0035.7N 126.3E70 kt975 mbTropical storm
Aug 3, 12:0037.4N 126.5E55 kt985 mbTropical storm
Aug 3, 18:0040.0N 126.5E35 kt990 mbMixed
Aug 4, 00:0041.8N 126.5E25 kt996 mbMixed
Aug 4, 06:0045.1N 126.8E998 mbMixed
Aug 4, 12:0046.7N 127.2E1000 mbMixed
Aug 4, 18:0048.3N 128.1E1000 mbExtratropical
Aug 5, 00:0049.7N 129.8E1000 mbExtratropical
Aug 5, 06:0050.9N 131.1E996 mbExtratropical

Other Western Pacific 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.