The 2021 season

Typhoon Cempaka (2021)

Typhoon Cempaka reached Category 1 in the Western Pacific between July 17, 2021 and July 25, 2021, with a lowest pressure of 965 mb, and made landfall.

Radar

Reflectivity now over Typhoon Cempaka. 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 17, 2021 to July 25, 2021
Peak strength
Category 1, 80 kt (92 mph)
Lowest pressure
965 mb (28.50 inHg)
Landfall
Yes
Accumulated cyclone energy
3.3
Tropical-storm-force wind reached
70 nmi (130 km, 81 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
15 nmi (28 km, 17 mi)
Overall size
130 nmi (241 km, 150 mi) to the outermost closed isobar
Peak gust in the best track
35 kt (40 mph)
Fastest the center moved
7 kt (8 mph)
Identifier
WP102021

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Jul 17, 00:0018.9N 117.1E1004 mbTropical storm
Jul 17, 06:0018.9N 115.8E15 kt1002 mbDisturbance
Jul 17, 12:0019.3N 115.7E15 kt1002 mbDisturbance
Jul 17, 18:0019.6N 115.4E15 kt1004 mbDisturbance
Jul 18, 00:0019.9N 115.0E20 kt1001 mbDisturbance
Jul 18, 06:0020.2N 114.3E25 kt1000 mbTropical depression
Jul 18, 12:0020.5N 113.8E30 kt998 mbTropical depression
Jul 18, 18:0020.7N 113.3E35 kt998 mbTropical storm
Jul 19, 00:0020.9N 113.1E40 kt995 mbTropical storm
Jul 19, 06:0021.0N 112.9E45 kt991 mbTropical storm
Jul 19, 12:0021.1N 112.8E55 kt985 mbTropical storm
Jul 19, 18:0021.2N 112.6E65 kt978 mbTyphoon
Jul 20, 00:0021.3N 112.4E65 kt977 mbTyphoon
Jul 20, 06:0021.5N 112.2E80 kt965 mbTyphoon
Jul 20, 12:0021.7N 111.9E75 kt970 mbTyphoon
Jul 20, 18:0021.8N 111.5E55 kt984 mbTropical storm
Jul 21, 00:0021.9N 111.2E35 kt998 mbTropical storm
Jul 21, 06:0022.2N 110.9E30 kt996 mbTropical depression
Jul 21, 12:0022.5N 110.5E25 kt999 mbTropical depression
Jul 21, 18:0022.7N 109.8E25 kt999 mbTropical depression
Jul 22, 00:0022.8N 109.0E25 kt1000 mbTropical depression
Jul 22, 06:0022.7N 108.3E25 kt1000 mbTropical depression
Jul 22, 12:0022.2N 108.0E25 kt1000 mbTropical depression
Jul 22, 18:0021.7N 107.8E20 kt1003 mbDisturbance
Jul 23, 00:0021.2N 107.7E20 kt1001 mbDisturbance
Jul 23, 06:0020.7N 107.4E20 kt1001 mbDisturbance
Jul 23, 12:0020.2N 107.0E20 kt1000 mbDisturbance
Jul 23, 18:0019.9N 107.1E20 kt1003 mbDisturbance
Jul 24, 00:0019.5N 107.0E20 kt1005 mbDisturbance
Jul 24, 06:0018.9N 106.4E15 kt999 mbDisturbance
Jul 24, 12:0018.5N 106.6E996 mbMixed
Jul 24, 18:0018.2N 106.7E998 mbTropical storm
Jul 25, 00:0018.1N 107.1E998 mbTropical storm

Other Western Pacific storms of 2021

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.