Katana VentraIP

2020 Pacific typhoon season

The 2020 Pacific typhoon season was the first of an ongoing series of below average Pacific typhoon seasons, and became the first with below-average tropical cyclone activity since 2014, with 23 named storms, 10 of which became typhoons and only 2 became super typhoons. This low activity was a consequence of La Niña that persisted from the summer of the year. It had the sixth-latest start in the basin on record, slightly behind 1973, and was the first to start that late since 2016. The first half of the season was unusually inactive, with only four systems, two named storms and one typhoon at the end of July. Additionally, the JTWC recorded no tropical cyclone development in the month of July, the first such occurrence since reliable records began. The season's first named tropical cyclone, Vongfong, developed on May 8, while the season's last named tropical cyclone, Krovanh, dissipated on December 24. However, the season's last system was an unnamed tropical depression which dissipated on December 29.

2020 Pacific typhoon season

May 8, 2020

December 29, 2020

220 km/h (140 mph)
(10-minute sustained)

905 hPa (mbar)

32

23

10

2 (unofficial)[nb 1]

457 total

$6 billion (2020 USD)

The scope of this article is limited to the Pacific Ocean to the north of the equator between 100°E and 180th meridian. Within the northwestern Pacific Ocean, there are two separate agencies that assign names to tropical cyclones which can often result in a cyclone having two names. The Japan Meteorological Agency (JMA) will name a tropical cyclone should it be judged to have 10-minute sustained wind speeds of at least 65 kilometers per hour (40 mph) anywhere in the basin, whilst the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) assigns names to tropical cyclones which move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N–25°N regardless of whether or not a tropical cyclone has already been given a name by the JMA. Tropical depressions that are monitored by the United States' Joint Typhoon Warning Center (JTWC) are given a number with a "W" suffix.

Duration

May 8 – May 18

155 km/h (100 mph) (10-min);
960 hPa (mbar)

June 10 – June 14

75 km/h (45 mph) (10-min);
996 hPa (mbar)

July 11 – July 15

<55 km/h (35 mph) (10-min);
1004 hPa (mbar)

July 30 – August 5

130 km/h (80 mph) (10-min);
975 hPa (mbar)

July 31 – August 3

75 km/h (45 mph) (10-min);
985 hPa (mbar)

August 6 – August 11

85 km/h (50 mph) (10-min);
994 hPa (mbar)

August 8 – August 13

55 km/h (35 mph) (10-min);
1012 hPa (mbar)

August 9 – August 11

95 km/h (60 mph) (10-min);
992 hPa (mbar)

August 16 – August 20

100 km/h (65 mph) (10-min);
992 hPa (mbar)

August 20 – August 27

155 km/h (100 mph) (10-min);
950 hPa (mbar)

August 27 – September 3

175 km/h (110 mph) (10-min);
935 hPa (mbar)

August 30 – September 7

195 km/h (120 mph) (10-min);
910 hPa (mbar)

September 10 – September 12

55 km/h (35 mph) (10-min);
1006 hPa (mbar)

September 15 – September 18

85 km/h (50 mph) (10-min);
992 hPa (mbar)

September 19 – September 24

110 km/h (70 mph) (10-min);
975 hPa (mbar)

September 25 – September 30

110 km/h (70 mph) (10-min);
980 hPa (mbar)

October 4 – October 17

130 km/h (80 mph) (10-min);
965 hPa (mbar)

October 6 – October 12

85 km/h (50 mph) (10-min);
994 hPa (mbar)

October 11 – October 14

85 km/h (50 mph) (10-min);
990 hPa (mbar)

October 13 – October 16

<55 km/h (35 mph) (10-min);
1002 hPa (mbar)

October 18 – October 25

120 km/h (75 mph) (10-min);
975 hPa (mbar)

October 19 – October 23

55 km/h (35 mph) (10-min);
998 hPa (mbar)

October 22 – October 29

165 km/h (105 mph) (10-min);
940 hPa (mbar)

October 26 – November 6

220 km/h (140 mph) (10-min);
905 hPa (mbar)

October 30 – November 7

95 km/h (60 mph) (10-min);
992 hPa (mbar)

November 6 – November 10

85 km/h (50 mph) (10-min);
992 hPa (mbar)

November 8 – November 16

155 km/h (100 mph) (10-min);
955 hPa (mbar)

December 18 – December 24

65 km/h (40 mph) (10-min);
1000 hPa (mbar)

Late on July 27, the JMA began to track a weak tropical depression in the open Western Pacific. Later the next day, the system would be classified as a subtropical depression by the JTWC, having been given a low chance of transitioning to a tropical cyclone. In a marginal environment with cyclonic easterly flow, moderate to strong wind shear and 28–30 °C sea surface temperatures, the system was expected to recurve poleward and be absorbed by a larger extratropical low. Instead, it dissipated on July 30.[304]

[303]

The began monitoring a tropical depression south of Japan on September 27.[305] The system moved generally northeastward until it was last noted on 18:00 UTC on September 29.[306]

JMA

On October 7, the (VNCHF) monitored a tropical depression that had made landfall in the Khánh Hòa province.[307] Enhanced by the seasonal northeast monsoon, the system caused many provinces nearby to experience heavy rainfall with average accumulations of 200–300 mm. In Sa Huỳnh (Quảng Ngãi), rainfalls peaked at 360 mm. By October 11, heavy floods partially caused by the depression killed 9 people.[308]

Vietnam Center for Hydro-Meteorological Forecasting

On December 5, a tropical depression formed south of Japan. The depression would be short-lived, as it dissipated the next day after being embedded into a frontal zone.[310]

[309]

On December 29, the JMA would track a weak tropical depression east of .[311]

Vietnam

Weather of 2020

Tropical cyclones in 2020

Pacific typhoon season

List of wettest tropical cyclones

2020 Atlantic hurricane season

2020 Pacific hurricane season

2020 North Indian Ocean cyclone season

South-West Indian Ocean cyclone seasons: , 2020–21

2019–20

Australian region cyclone seasons: , 2020–21

2019–20

South Pacific cyclone seasons: , 2020–21

2019–20

China Meteorological Agency

Digital Typhoon

Hong Kong Observatory

Japan Meteorological Agency

Multilingual Tropical Cyclone Information

Joint Typhoon Warning Center

Korea Meteorological Administration

Malaysian Meteorological Department

National Weather Service Guam

Philippine Atmospheric, Geophysical and Astronomical Services Administration

Taiwan Central Weather Bureau

TCWC Jakarta

Thai Meteorological Department

Typhoon2000

Vietnam's National Hydro-Meteorological Service