Timeline of the 2020 Pacific hurricane season

The 2020 Pacific hurricane season was an event in the annual cycle of tropical cyclone formation, in which tropical cyclones form in the Eastern Pacific Ocean. The season officially started on May 15 in the Eastern Pacific—east of 140°W—and began on June 1 in the Central Pacific—the region between the International Date Line and 140°W–and ended on November 30. These dates typically cover the period of each year when most tropical cyclones form in the Eastern Pacific basin according to the National Hurricane Center. However, tropical cyclones sometimes form outside the bounds of an official season, as was evidenced by the formation of Tropical Depression One-E on April 25. The season effectively ended with the dissipation of its final storm, Tropical Storm Polo, on November 19.

The formation of One-E on April 25 marked the earliest start to a Pacific hurricane season on record. However, seasonal activity as a whole was generally below average. The season featured 16 named storms, in line with the 1981–2010 long-term average of 15. It featured just four hurricanes, or half the average. Three of those hurricanes intensified into major hurricanes, which compares to the average of four. A few storms produced substantial impact to land in 2020. In May, Tropical Storm Amanda caused widespread damage and killed numerous people in El Salvador, Guatemala, and Honduras. In August, the remnants of Tropical Storm Fausto sparked devastating wildfires across Northern California, while Genevieve produced hurricane-force winds and caused additional fatalities in the Baja California peninsula. Lesser but still deadly effects were produced there by Tropical Storm Hernan as well. A month prior, Hurricane Douglas passed very close to Oahu, though it caused only minor impact.

This timeline documents tropical cyclone formations, strengthening, weakening, landfalls, extratropical transitions, and dissipations during the season. It includes information that was not released throughout the season, meaning that data from post-storm reviews by the National Hurricane Center, such as a storm that was not initially warned upon, has been included.

By convention, meteorologists use one time zone when issuing forecasts and making observations: Coordinated Universal Time (UTC), and also use the 24-hour clock (where 00:00 = midnight UTC). Tropical cyclone advisories in the Eastern North Pacific basin use both UTC and the nautical time zone where the center of the tropical cyclone is currently located. Time zones utilized (east to west) are: Central, Mountain, Pacific and Hawaii. In this timeline, all information is listed by UTC first, with the respective regional time zone included in parentheses. Additionally, figures for maximum sustained winds and position estimates are rounded to the nearest 5 units (knots, miles, or kilometers), following National Hurricane Center practice. Direct wind observations are rounded to the nearest whole number. Atmospheric pressures are listed to the nearest millibar and nearest hundredth of an inch of mercury.

April
April 25
 * 06:00 UTC (11:00 p.m. PDT April 24) at 13.5°N, -115.5°W – Tropical Depression One-E forms from a low-pressure area about 805 mi southwest of the southern tip of the Baja California peninsula, becoming the earliest tropical cyclone on record in the East Pacific. It simultaneously attains peak winds of 35 mph (55 km/h) and a minimum barometric pressure of 1006 mb.

April 26
 * 12:00 UTC (5:00 a.m. PDT) at 15.5°N, -118.5°W – Tropical Depression One-E degenerates into a remnant low about 920 mi southwest of the southern tip of the Baja California peninsula.

May
May 15
 * The 2022 Pacific hurricane season officially begins in the East Pacific.

May 30
 * 18:00 UTC (1:00 p.m. CDT) at 12.2°N, -90.9°W – Tropical Depression Two-E forms from the complex interaction of a Kelvin wave, a cold-core low, and a tropical wave about 115 mi south of Puerto San José, Guatemala.

May 31
 * 06:00 UTC (1:00 a.m. CDT) at 13.3°N, -90.4°W – Tropical Depression Two-E strengthens into Tropical Storm Amanda about 35 mi south-southwest of the Guatemala–El Salvador border. It reaches peak winds of 40 mph (65 km/h) and a minimum barometric pressure of 1003 mb.
 * 10:00 UTC (5:00 a.m. CDT) at 13.8°N, -90.3°W – Tropical Storm Amanda makes landfall near Las Lisas, Guatemala, with winds of 40 mph (65 km/h).
 * 18:00 UTC (1:00 p.m. CDT) at 16°N, -90°W – Tropical Storm Amanda dissipates about 100 mi (165 km) north-northeast of Guatemala City, Guatemala. Its remnants lead to the formation of Tropical Storm Cristobal in the Gulf of Mexico.

June
June 1
 * The season in the Central Pacific officially begins.

June 24
 * 06:00 UTC (8:00 p.m. HST, June 23) at 10°N, -131.9°W – Tropical Depression Three-E forms from the complex interaction of a tropical wave, an area of disturbed weather, and the favorable phase of the Madden–Julian oscillation about 1710 mi southwest of the southern tip of the Baja California peninsula.

June 25
 * 18:00 UTC (8:00 a.m. HST) at 11°N, -136.8°W – Tropical Depression Three-E strengthens into Tropical Storm Boris about 1,330 mi (2,145 km) east-southeast of Hilo, Hawaii. It attains peak winds of 40 mph (65 km/h) and a minimum barometric pressure of 1005 mb.

June 26 June 28
 * 06:00 UTC (8:00 p.m. HST, June 25) at 11.6°N, -138.1°W – Tropical Storm Boris weakens into a tropical depression about 1,235 mi (1,990 km) east-southeast of Hilo, Hawaii.
 * 00:00 UTC (2:00 p.m. HST, June 27) at 12.2°N, -141.7°W – Tropical Depression Boris degenerates to a remnant low about 1,015 mi (1,635 km) east-southeast of Hilo, Hawaii.

June 29
 * 18:00 UTC (12:00 p.m. MDT) at 20.5°N, -112.6°W – Tropical Depression Four-E forms from the interaction of an area of disturbed weather and a tropical wave about 255 mi southwest of the southern tip of the Baja California peninsula. It attains peak winds of 30 mph (45 km/h) and a minimum barometric pressure of 1006 mb.

June 30
 * 18:00 UTC (12:00 p.m. MDT) at 20.5°N, -112.6°W – Tropical Depression Four-E degenerates to a remnant low about 235 mi (380 km) southwest of the southern tip of the Baja California peninsula.

July
July 6
 * 18:00 UTC (1:00 p.m. CDT) at 10.4°N, -99.5°W – Tropical Depression Five-E forms from a tropical wave about 435 mi south of Acapulco, Mexico.

July 7
 * 06:00 UTC (1:00 a.m. CDT) at 11.4°N, -101.5°W – Tropical Depression Five-E intensifies into Tropical Storm Cristina about 390 mi south-southwest of Acapulco, Mexico.

July 10
 * 18:00 UTC (1:00 p.m. MDT) at 19.4°N, -114.8°W – Tropical Storm Cristina attains peak winds of 70 mph (110 km/h) and a minimum barometric pressure of 993 mb about 390 mi southwest of the southern tip of the Baja California peninsula.

July 12 July 13
 * 18:00 UTC (11:00 a.m. PDT) at 20.6°N, -124.8°W – Tropical Storm Cristina degenerates to a remnant low about 965 mi west-southwest of the southern tip of the Baja California peninsula.
 * 12:00 UTC (6:00 a.m. MDT) at 16.6°N, -110.4°W – Tropical Depression Six-E forms from a tropical wave about 470 mi south-southwest of Cabo San Lucas, Mexico. It attains peak winds of 35 mph (55 km/h) and a minimum barometric pressure of 1007 mb.

July 14 July 20
 * 18:00 UTC (11:00 a.m. PDT) – Tropical Depression Six-E dissipates about 610 mi west-southwest of the southern tip of the Baja California peninsula.
 * 00:00 UTC (5:00 p.m. PDT, July 19) at 17°N, -128°W – Tropical Depression Seven-E forms from a tropical wave about 1235 mi west-southwest of the southern tip of the Baja California peninsula.
 * 00:00 UTC (5:00 p.m. PDT, July 19) at 14.7°N, -118.8°W – Tropical Depression Eight-E forms from a tropical wave about 805 mi southwest of the southern tip of the Baja California peninsula.
 * 12:00 UTC at 18.3°N, -129.7°W – Tropical Depression Seven-E intensifies into an unnamed tropical storm about 1315 mi west-southwest of the southern tip of the Baja California peninsula. It attains peak winds of 40 mph (65 km/h) and a minimum barometric pressure of 1006 mb.
 * 18:00 UTC (11:00 a.m. PDT) at 13.5°N, -120°W – Tropical Depression Eight-E intensifies into Tropical Storm Douglas about 920 mi south of the southern tip of the Baja California peninsula.

July 22
 * 18:00 UTC (11:00 a.m. PDT) at 11.9°N, -130.3°W – Tropical Storm Douglas intensifies into a Category 1 hurricane about midway between the coastline of southwestern Mexico and Hawaii.

July 23 July 24
 * 06:00 UTC (11:00 p.m. PDT, July 22) at 12.8°N, -133.3°W – Hurricane Douglas rapidly intensifies into a Category 3 hurricane about 1680 mi southwest of the southern tip of the Baja California Peninsula.
 * 00:00 UTC (5:00 p.m. PDT, July 23) at 14.6°N, -138°W – Hurricane Douglas intensifies into a Category 4 hurricane about 1915 mi west-southwest of the southern tip of the Baja California peninsula. It simultaneously attains peak winds of 130 mph (215 km/h) and a minimum barometric pressure of 954 mb.
 * 12:00 UTC (2:00 a.m. HST) at 16.1°N, -141.1°W – Hurricane Douglas weakens to a Category 3 hurricane  about 950 mi southeast of Hilo, Hawaii, as it crosses into the Central Pacific Hurricane Center area of responsibility.

July 25
 * 06:00 UTC (8:00 p.m. HST, July 24) at 18.2°N, -145.9°W – Hurricane Douglas weakens to a Category 2 hurricane about 610 mi southeast of Hilo, Hawaii.

July 26
 * 00:00 UTC (2:00 p.m. HST, July 25) at 19.7°N, -150.7°W – Hurricane Douglas weakens to a Category 1 hurricane about 285 mi east of Hilo, Hawaii.

July 28
 * 00:00 UTC (2:00 p.m. HST, July 27) at 22.9°N, -162.8°W – Hurricane Douglas weakens to a tropical storm about 545 mi northwest of Hilo, Hawaii.

July 29
 * 12:00 UTC (2:00 a.m. HST) at 24.6°N, -174.4°W – Tropical Storm Douglas degenerates to a remnant low about 1285 mi northwest of Hilo, Hawaii.

August
August 8 August 9
 * 18:00 UTC (1:00 p.m. CDT) at 14.1°N, -101°W – Tropical Depression Nine-E forms from a tropical wave about 175 mi south-southwest of Lazaro Cardenas, Mexico.
 * 06:00 UTC (1:00 a.m. CDT) at 15.6°N, -103.4°W – Tropical Depression Nine-E intensifies into Tropical Storm Elida about 230 mi south-southeast of Manzanillo, Mexico.

August 10 August 11
 * 18:00 UTC (12:00 p.m. MDT) at 19.2°N, -110.3°W – Tropical Storm Elida intensifies into a Category 1 hurricane about 255 mi south of the southern tip of the Baja California peninsula.
 * 12:00 UTC (6:00 a.m. MDT) at 21.1°N, -113.5°W – Hurricane Elida intensifies into a Category 2 hurricane about 255 mi southwest of the southern tip of the Baja California peninsula. It simultaneously attains peak winds of 105 mph (165 km/h) and a minimum barometric pressure of 971 mb.

August 12
 * 00:00 UTC (5:00 p.m. PDT, August 11) at 22.2°N, -116°W – Hurricane Elida weakens to a Category 1 hurricane about 390 mi west-southwest of the southern tip of the Baja California peninsula.
 * 12:00 UTC (5:00 a.m. PDT) at 23.1°N, -118.3°W – Hurricane Elida weakens to a tropical storm about 530 mi west of the southern tip of the Baja California peninsula.

August 13 August 16 August 17
 * 00:00 UTC (5:00 p.m. PDT, August 12) at 24.1°N, -120°W – Tropical Storm Elida degenerates to a remnant low about 405 mi southwest of the central portion of the Baja California peninsula coastline.
 * 06:00 UTC (11:00 p.m. PDT, August 12) at 13.5°N, -128.8°W – Tropical Depression Ten-E forms from a disturbance in the monsoon trough about 1610 mi west-southwest of the southern tip of the Baja California peninsula. It simultaneously attains peak winds of 35 mph (55 km/h) and a minimum barometric pressure of 1004 mb.
 * 00:00 UTC (5:00 p.m. PDT, August 15) at 18°N, -118.2°W – Tropical Depression Eleven-E forms from a tropical wave about 635 mi west-southwest of the southern tip of the Baja California peninsula.
 * 12:00 UTC (5:00 a.m. PDT) at 13.6°N, -133.9°W – Tropical Depression Ten-E degenerates to a remnant low about 1695 mi southwest of the southern tip of the Baja California peninsula.
 * 12:00 UTC (5:00 a.m. PDT) at 20.4°N, -119.3°W – Tropical Depression Eleven-E intensifies into Tropical Storm Fausto about 625 mi southwest of the southern tip of the Baja California peninsula. It attains peak winds of 40 mph (65 km/h) and a minimum barometric pressure of 1004 mb.
 * 18:00 UTC (11:00 a.m. PDT) at 21.7°N, -120.5°W – Tropical Storm Fausto weakens to a tropical depression about 680 mi west-southwest of the southern tip of the Baja California peninsula.
 * 12:00 UTC (7:00 a.m. CDT) at 11.3°N, -96.5°W – Tropical Depression Twelve-E forms from a tropical wave about 300 mi south of Puerto Ángel, Mexico.
 * 18:00 UTC (1:00 p.m. CDT) at 11.8°N, -98°W – Tropical Depression Twelve-E intensifies into Tropical Storm Genevieve about 365 mi southeast of Acapulco, Mexico.
 * 12:00 UTC (5:00 a.m. PDT) at 23.3°N, -125.3°W – Tropical Depression Fausto degenerates to a remnant low about 980 mi west of the southern tip of the Baja California peninsula.
 * 12:00 UTC (7:00 a.m. CDT) at 13.9°N, -102.3°W – Tropical Storm Genevieve intensifies into a Category 1 hurricane about 290 mi south of Lazaro Cardenas, Mexico.

August 18
 * 00:00 UTC (6:00 p.m. MDT, August 17) at 16°N, -105.3°W – Hurricane Genevieve intensifies into a Category 2 hurricane about 370 mi west-southwest of Acapulco, Mexico.
 * 12:00 UTC (6:00 a.m. MDT) at 17.7°N, -107.6°W – Hurricane Genevieve rapidly intensifies into a Category 4 hurricane, skipping Category 3 status, about 225 mi west-southwest of Manzanillo, Mexico. It simultaneously attains peak winds of 130 mph (215 km/h) and a minimum barometric pressure of 950 mb.
 * 18:00 UTC (12:00 p.m. MDT) at 18.3°N, -108.3°W – Hurricane Genevieve weakens to a Category 3 hurricane about 330 mi south-southeast of the southern tip of the Baja California peninsula.

August 19
 * 06:00 UTC (12:00 a.m. MDT) at 19.9°N, -109.2°W – Hurricane Genevieve weakens to a Category 2 hurricane about 210 mi south of the southern tip of the Baja California peninsula.
 * 18:00 UTC (12:00 p.m. MDT) at 21.1°N, -109.9°W – Hurricane Genevieve weakens to a Category 1 hurricane about 120 mi south of the southern tip of the Baja California peninsula.

August 20
 * 18:00 UTC (12:00 p.m. MDT) at 23.4°N, -112°W – Hurricane Genevieve weakens to a tropical storm about 140 mi west-northwest of the southern tip of the Baja California peninsula.

August 21 August 26
 * 18:00 UTC (11:00 a.m. PDT) at 25.4°N, -115.2°W – Tropical Storm Genevieve degenerates to a remnant low about 375 mi west-northwest of the southern tip of the Baja California peninsula.
 * 06:00 UTC (12:00 a.m. MDT) at 17.2°N, -106.8°W – Tropical Storm Hernan forms from a disturbance in the monsoon trough about 340 mi south-southwest of Cabo Corrientes, Mexico.
 * 12:00 UTC (5:00 a.m. PDT) at 15.3°N, -117.1°W – Tropical Depression Fourteen-E forms from a tropical wave about 690 mi southwest of the southern tip of the Baja California peninsula.
 * 18:00 UTC (2:00 p.m. PDT) at 15.5°N, -116.8°W – Tropical Depression Fourteen-E intensifies into Tropical Storm Iselle about 680 mi south-southwest of the southern tip of the Baja California peninsula.

August 27 August 28
 * 06:00 UTC (12:00 a.m. MDT) at 18.4°N, -105.8°W – Tropical Storm Hernan attains peak winds of 45 mph (75 km/h) and a minimum barometric pressure of 1001 mb about 110 mi southwest of Manzanillo, Mexico.
 * 06:00 UTC (11:00 p.m. PDT, August 27) at 17.7°N, -115.6°W – Tropical Storm Iselle attains peak winds of 50 mph (85 km/h) and a minimum barometric pressure of 997 mb about 510 mi southwest of the southern tip of the Baja California peninsula.
 * 12:00 UTC (6:00 a.m. MDT) at 23.1°N, -108.6°W – Tropical Storm Hernan weakens to a tropical depression about 90 mi east of the southern tip of the Baja California peninsula.
 * 18:00 UTC (12:00 p.m. MDT) at 23°N, -109.6°W – Tropical Depression Hernan degenerates to a remnant low just offshore the southern tip of the Baja California peninsula.

August 30
 * 06:00 UTC (12:00 a.m. MDT) at 22.1°N, -113.8°W – Tropical Storm Iselle weakens to a tropical depression about 250 mi west-southwest of the southern tip of the Baja California peninsula.
 * 18:00 UTC (12:00 p.m. MDT) at 23.4°N, -113.3°W – Tropical Depression Iselle degenerates to a remnant low about 215 mi west-northwest of the southern tip of the Baja California peninsula.

September
September 5
 * 00:00 UTC (7:00 p.m. CDT, September 4) at 14.8°N, -97.4°W – Tropical Storm Julio forms from the remnants of the Atlantic's Hurricane Nana about 85 mi southwest of Puerto Ángel, Mexico.

September 6
 * 00:00 UTC (7:00 p.m. CDT, September 5) at 16.8°N, -103.9°W – Tropical Storm Julio attains peak winds of 45 mph (75 km/h) and a minimum barometric pressure of 1004 mb about 155 mi south-southeast of Manzanillo, Mexico.

September 7
 * 00:00 UTC (6:00 p.m. MDT, September 6) at 19.3°N, -110.7°W – Tropical Storm Julio weakens to a tropical depression about 40 mi north-northeast of Socorro Island.
 * 06:00 UTC (12:00 a.m. MDT) – Tropical Depression Julio dissipates.

September 12 September 13
 * 18:00 UTC (12:00 p.m. MDT) at 15.8°N, -112°W – Tropical Depression Sixteen-E forms from a tropical wave about 540 mi south-southwest of the southern tip of the Baja California peninsula.
 * 06:00 UTC (12:00 a.m. MDT) at 17°N, -113.4°W – Tropical Depression Sixteen-E intensifies into Tropical Storm Karina about 460 mi southwest of the southern tip of the Baja California peninsula.

September 15
 * 00:00 UTC (5:00 p.m. PDT, September 14) at 18.7°N, -119.3°W – Tropical Storm Karina attains peak winds of 60 mph (95 km/h) and a minimum barometric pressure of 996 mb about 690 mi west-southwest of the southern tip of the Baja California peninsula.

September 16
 * 18:00 UTC (11:00 a.m. PDT) at 22.8°N, -124.1°W – Tropical Storm Karina degenerates to a remnant low about 920 mi west of the southern tip of the Baja California peninsula.

September 20
 * 18:00 UTC (12:00 p.m. MDT) at 15.7°N, -108°W – Tropical Depression Seventeen-E forms from a trough that originates on the southern side of the Atlantic's Tropical Storm Beta. It organizes into a tropical depression about 575 mi south-southeast of the southern tip of the Baja California peninsula.

September 21 September 23
 * 18:00 UTC (12:00 p.m. MDT) at 17.2°N, -112.8°W – Tropical Depression Seventeen-E intensifies into Tropical Storm Lowell about 460 mi south-southwest of the southern tip of the Baja California peninsula.
 * 06:00 UTC (11:00 p.m. PDT, September 22) at 19.6°N, -119.3°W – Tropical Storm Lowell attains peak winds of 50 mph (85 km/h) and a minimum barometric pressure of 1001 mb about 805 mi south-southwest of the southern tip of the Baja California peninsula.

September 25
 * 18:00 UTC (11:00 a.m. PDT) at 21.5°N, -129.8°W – Tropical Storm Lowell degenerates to a remnant low about 1265 mi west of the southern tip of the Baja California peninsula.

September 29
 * 06:00 UTC (12:00 a.m. MDT) at 13.5°N, -107°W – Tropical Depression Eighteen-E forms from a disturbance within the monsoon trough about 415 mi southwest of Manzanillo, Mexico.
 * 18:00 UTC (12:00 p.m. MDT) at 13.6°N, -109°W – Tropical Depression Eighteen-E intensifies into Tropical Storm Marie about 490 mi south-southwest of Manzanillo, Mexico.

October
October 1 October 2
 * 00:00 UTC (5:00 p.m. PDT, September 30) at 14.4°N, -116.1°W – Tropical Storm Marie intensifies into a Category 1 hurricane about 710 mi south-southwest of the southern tip of the Baja California peninsula.
 * 12:00 UTC (5:00 a.m. PDT) at 14.8°N, -119°W – Hurricane Marie intensifies into a Category 2 hurricane about 810 mi southwest of the southern tip of the Baja California peninsula.
 * 00:00 UTC (5:00 p.m. PDT, October 1) at 15.4°N, -121.5°W – Hurricane Marie intensifies into a Category 3 hurricane about 910 mi southwest of the southern tip of the Baja California peninsula.
 * 06:00 UTC (11:00 p.m. PDT, October 1) at 15.9°N, -122.6°W – Hurricane Marie intensifies into a Category 4 hurricane about 955 mi southwest of the southern tip of the Baja California peninsula. It attains peak winds of 140 mph (220 km/h) and a minimum barometric pressure of 945 mb.

October 3
 * 12:00 UTC (5:00 a.m. PDT) at 18.1°N, -126.7°W – Hurricane Marie weakens to a Category 3 hurricane about 1130 mi west-southwest of the southern tip of the Baja California peninsula.

October 4
 * 06:00 UTC (11:00 p.m. PDT, October 3) at 19.5°N, -128°W – Hurricane Marie weakens to a Category 2 hurricane about 1180 mi west-southwest of the southern tip of the Baja California peninsula.
 * 12:00 UTC (5:00 a.m. PDT) at 19.8°N, -128.5°W – Hurricane Marie weakens to a Category 1 hurricane about 1205 mi west-southwest of the southern tip of the Baja California peninsula.

October 5 October 6
 * 00:00 UTC (5:00 p.m. PDT, October 4) at 20.4°N, -129.9°W – Hurricane Marie weakens to a tropical storm about 1290 mi west-southwest of the southern tip of the Baja California peninsula.
 * 06:00 UTC (1:00 a.m. CDT) at 11.4°N, -105°W – Tropical Depression Nineteen-E forms from a tropical wave about 635 mi southwest of Acapulco, Mexico.
 * 18:00 UTC (12:00 p.m. MDT) at 12.5°N, -105.3°W – Tropical Depression Nineteen-E intensifies into Tropical Storm Norbert about 455 mi south of Manzanillo, Mexico.
 * 12:00 UTC (6:00 a.m. MDT) at 13.9°N, -106.4°W – Tropical Storm Norbert attains peak winds of 60 mph (95 km/h) and a minimum barometric pressure of 1000 mb about 460 mi south of Manzanillo, Mexico.
 * 18:00 UTC (11:00 a.m. PDT) at 22.2°N, -135.4°W – Tropical Storm Marie degenerates to a remnant low about 1280 mi east of Hilo, Hawaii.

October 8
 * 00:00 UTC (6:00 p.m. MDT, October 7) at 13.3°N, -106.8°W – Tropical Storm Norbert weakens to a tropical depression about 425 mi south-southwest of Manzanillo, Mexico.

October 10
 * 00:00 UTC (6:00 p.m. MDT, October 9) at 13.5°N, -106.4°W – Tropical Depression Norbert dissipates about 520 mi south of Manzanillo, Mexico.

October 13
 * 18:00 UTC (12:00 p.m. MDT) at 19.3°N, -111.3°W – The remnants of Norbert regenerate into a tropical depression just northwest of Socorro Island.

October 14 October 15
 * 00:00 UTC (6:00 p.m. MDT, October 13) at 20.5°N, -112.2°W – Tropical Depression Norbert re-intensifies into a tropical storm about 215 mi southwest of the southern tip of the Baja California peninsula.
 * 00:00 UTC (5:00 p.m. PDT, October 14) at 25°N, -115.3°W – Tropical Storm Norbert degenerates to a remnant low about 185 mi south of Punta Eugenia, Mexico.

November
November 3
 * 18:00 UTC (11:00 a.m. PDT) at 13.7°N, -115.5°W – Tropical Storm Odalys forms from a tropical wave about 730 mi south-southwest of the southern tip of the Baja California peninsula.

November 5
 * 00:00 UTC (5:00 p.m. PDT, November 4) at 17.7°N, -121.2°W – Tropical Storm Odalys attains peak winds of 50 mph (85 km/h) and a minimum barometric pressure of 1000 mb about 810 mi southwest of the southern tip of the Baja California peninsula.
 * 18:00 UTC (11:00 a.m. PDT) at 18.6°N, -123.2°W – Tropical Storm Odalys degenerates to a remnant low about 905 mi southwest of the southern tip of the Baja California peninsula.

November 17 November 18
 * 18:00 UTC (12:00 p.m. MDT) at 15°N, -112.9°W – Tropical Depression Twenty-One-E forms from a disturbance in the monsoon trough about 575 mi south-southwest of the southern tip of the Baja California peninsula.
 * 00:00 UTC (6:00 p.m. MDT, November 17) at 15.4°N, -113.8°W – Tropical Depression Twenty-One-E intensifies into Tropical Storm Polo about 570 mi south-southwest of the southern tip of the Baja California peninsula.
 * 12:00 UTC (5:00 a.m. PDT) at 16°N, -115.6°W – Tropical Storm Polo attains peak winds of 45 mph (75 km/h) and a minimum barometric pressure of 1004 mb about 600 mi south-southwest of the southern tip of the Baja California peninsula.

November 19
 * 12:00 UTC (5:00 a.m. PDT) at 17°N, -119.8°W – Tropical Storm Polo weakens to a tropical depression about 760 mi southwest of the southern tip of the Baja California peninsula.
 * 18:00 UTC (11:00 a.m. PDT) at 16.9°N, -120.8°W – Tropical Depression Polo degenerates to a remnant low about 815 mi west-southwest of the southern tip of the Baja California peninsula.

November 30
 * The 2020 Pacific hurricane season ends in the East Pacific and Central Pacific basins.