Timeline of the 2021 Pacific hurricane season

The 2021 Pacific hurricane season was a moderately active hurricane season, with above-average tropical activity in terms of named storms,[nb 1] but featured below-average activity in terms of major hurricanes.[nb 2] It is the first season to have at least five systems make landfall in Mexico, the most since 2018.[1] It was also the second consecutive season in which no tropical cyclones formed in the Central Pacific (between 140°W and the International Date Line). The season officially began on May 15 in the Eastern Pacific (east of 140°W longitude), and on June 1 in the Central Pacific; both ended on November 30. These dates historically describe the period each year when most tropical cyclones form in the eastern and central Pacific and are adopted by convention.[2] However, the formation of tropical cyclones is possible at any time of the year, as illustrated this year by the formation of Tropical Storm Andres on May 9. This was the earliest forming tropical storm on record in the Eastern Pacific.[3]

Timeline of the
2021 Pacific hurricane season
The cumulative track of all systems in the 2021 Pacific hurricane season.
Season summary map
Season boundaries
First system formedMay 9, 2021
Last system dissipatedNovember 10, 2021
Strongest system
NameFelicia
Maximum winds145 mph (230 km/h)
(1-minute sustained)
Lowest pressure945 mbar (hPa; 27.91 inHg)
Longest lasting system
NameLinda
Duration10 days
Storm articles

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).[4] 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.

Timeline

Hurricane Rick (2021)Hurricane PamelaHurricane Olaf (2021)Hurricane Nora (2021)Hurricane Enrique (2021)Tropical Storm Dolores (2021)Saffir–Simpson scale

May

Tropical Storm Andres off the coast of Central America on May 9. The storm is at peak intensity, and most of its clouds are on its west side.
Tropical Storm Andres at peak intensity on May 9

May 9

  • 06:00 UTC (12:00 a.m. MDT) at 13.4°N 107.5°W / 13.4; -107.5 (Tropical Depression One-E forms) Tropical Depression One-E forms from a disturbance about 350 nmi (405 mi; 650 km) south-southeast of Socorro Island.[3]
  • 12:00 UTC (6:00 a.m. MDT) at 13.7°N 107.9°W / 13.7; -107.9 – Tropical Depression One-E strengthens into Tropical Storm Andres, and subsequently reaches peak intensity with winds of 40 mph (65 km/h) and a central pressure of 1005 mbar (29.68 inHg).[3]

May 10

  • 18:00 UTC (6:00 p.m. MDT) at 15.7°N 109.7°W / 15.7; -109.7 – Tropical Storm Andres weakens into a tropical depression about 200 nmi (230 mi; 370 km) south of the southern tip of Baja California due to strong wind shear.[3]

May 11

May 15

  • The Eastern Pacific hurricane season officially begins.[2]

May 30

Tropical Storm Blanca on May 31. The system is over the open ocean and is near peak intensity.
Tropical Storm Blanca near peak intensity

May 31

June

June 1

June 2

June 4

June 12

  • 12:00 UTC (5:00 a.m. PDT) at 11.6°N 122.3°W / 11.6; -122.3 Tropical Depression Three-E forms about 975 nmi (1,120 mi; 1,805 km) southwest of the southern tip of Baja California due to improved deep convection.[7]
  • 18:00 UTC (11:00 a.m. PDT) at 11.8°N 123.3°W / 11.8; -123.3 Tropical Depression Three-E strengthens into Tropical Storm Carlos a mere 6 hours after becoming a tropical depression.[7]

June 13

  • 06:00 UTC (11:00 p.m. PDT June 12) at 11.9°N 125.0°W / 11.9; -125.0 Tropical Storm Carlos reaches peak intensity with winds of 45 kn (50 mph; 85 km/h) and a minimum central pressure of 1,003 mbar (29.6 inHg) [7]

June 14

  • 18:00 UTC (11:00 a.m. PDT) at 10.9°N 129.5°W / 10.9; -129.5 Tropical Storm Carlos weakens into a tropical depression about 1,325 nmi (1,525 mi; 2,455 km) west-southwest of the southern tip of the Baja California Peninsula after losing organisation.[7]

June 16

  • 12:00 UTC (5:00 a.m. PDT) at 8.8°N 134.9°W / 8.8; -134.9 Tropical Depression Carlos transitions into a tropical low about 1,675 nmi (1,930 mi; 3,100 km) west-southwest of the southern tip of the Baja California Peninsula after losing deep convection.[7]

June 18

The track of Tropical Storm Dolores from June 18 to June 20, 2021. The track starts parallel to the coast of Central America as a potential tropical cyclone. As Dolores goes west, it strengthens into a tropical storm, before taking a sharp turn to the north, dissipating over Mexico.
Track of Tropical Storm Dolores from June 18–20, according to the Saffir-Simpson scale

June 19

June 20

  • 00:00 UTC (7:00 p.m. CDT June 19) at 21.4°N 104.1°W / 21.4; -104.1 Tropical Storm Dolores weakens into a Tropical Depression soon after making landfall. [8]
  • 06:00 UTC (1:00 a.m. CDT) Tropical Depression Dolores dissipates soon after weakening into a tropical depression over central Mexico. [8]

June 25

June 26

Hurricane Enrique on June 27 off the western coast of Mexico. The storm has a noticeable, but not clear eye, and more of the clouds are located to the southwest of the center.
Hurricane Enrique on June 27, 2021

June 27

  • 18:00 UTC (12:00 p.m. MDT) at 18.7°N 105.7°W / 18.7; -105.7 Hurricane Enrique reaches peak intensity with winds of 80 kn (90 mph; 150 km/h) and a minimum central pressure of 972 millibars (28.7 inHg).[9]

June 28

June 30

  • 12:00 UTC (6:00 a.m. MDT) at 24.3°N 109.8°W / 24.3; -109.8 Tropical Storm Enrique weakens into a tropical depression about 30 nmi (35 mi; 55 km) northeast of La Paz, Mexico.[9]
  • 18:00 UTC (12:00 p.m. MDT) Tropical Depression Enrique dissipates into a trough of low pressure roughly 20 mi (30 km) north of La Paz, Mexico.[9]

July

July 14

Hurricane Felicia

July 15

  • 06:00 UTC (11:00 p.m. PDT July 14) at 15.1°N 117.1°W / 15.1; -117.1 Tropical Storm Felicia strengthens into a Category 1 hurricane about 750 nmi (865 mi; 1,390 km) southwest of the southern tip of Baja California. [10]
  • 18:00 UTC (11:00 a.m. PDT) at 15.3°N 119.0°W / 15.3; -119.0 Hurricane Felicia strengthens into a Category 2 hurricane about 815 mi (1,310 km) southwest of the southern tip of Baja California. [10]

July 16

  • 09:00 UTC (2:00 a.m. PDT) at 15.1°N 121.0°W / 15.1; -121.0 Hurricane Felicia strengthens into a Category 3 hurricane about 900 mi (1,450 km) southwest of the southern tip of Baja California.[11]
  • 21:00 UTC (11:00 a.m. HST) at 14.9°N 122.4°W / 14.9; -122.4 Hurricane Felicia strengthens into a Category 4 hurricane about 985 mi (1,585 km) west-southwest of the southern tip of Baja California.[12]

July 17

  • 15:00 UTC (5:00 a.m. HST) at 14.6°N 124.6°W / 14.6; -124.6 Hurricane Felicia reaches peak intensity with winds of 145 mph (235 km/h) and a minimum central pressure of 945 mbar (27.9 inHg) about 1,120 mi (1,800 km) west-southwest of the southern tip of Baja California.[13]
  • 15:00 UTC (9:00 a.m. MDT) at 16.8°N 109.2°W / 16.8; -109.2 Tropical Depression Seven-E forms about 425 mi (685 km) south of the southern tip of Baja California.[14]
  • 21:00 UTC (3:00 p.m. MDT) at 17.1°N 110.1°W / 17.1; -110.1 Tropical Depression Seven-E strengthens into Tropical Storm Guillermo about 400 mi (645 km) south-southeast of the southern tip of Baja California.[15]

July 18

  • 21:00 UTC (11:00 a.m. HST) at 16.0°N 129.0°W / 16.0; -129.0 Hurricane Felicia weakens into a Category 3 hurricane about 1,330 mi (2,140 km) west-southwest of the southern tip of Baja California.[16]
  • 21:00 UTC (3:00 p.m. MDT) at 18.7°N 113.8°W / 18.7; -113.8 Tropical Storm Guillermo reaches peak intensity with winds of 60 mph (95 km/h) and a minimum central pressure of 999 mbar (29.5 inHg) about 385 mi (620 km) southwest of the southern tip of Baja California.[17]

July 19

July 20

July 21

July 30

August

August 1

  • 03:00 UTC (8:00 p.m. PDT July 31) at 14.3°N 118.7°W / 14.3; -118.7 Tropical Storm Hilda strengthens into a category 1 hurricane about 825 mi (1,330 km) southwest of the southern tip of Baja California.[27]
  • 09:00 UTC (2:00 a.m. PDT) at 14.5°N 119.6°W / 14.5; -119.6 Hurricane Hilda reaches peak intensity with winds of 85 mph (135 km/h) and a minimum central pressure of 985 mbar (29.1 inHg) about 860 mi (1,385 km) southwest of the southern tip of Baja California.[28]
  • 09:00 UTC (11:00 p.m. HST July 31) at 11.4°N 127.5°W / 11.4; -127.5 Tropical Depression Nine-E transitions into a post-tropical cyclone about 1,405 mi (2,260 km) west-southwest of the southern tip of Baja California.[29]
  • 21:00 UTC (3:00 p.m. MDT) at 17.4°N 111.9°W / 17.4; -111.9 Tropical Depression Ten-E forms about 400 mi (645 km) south-southwest of the southern tip of Baja California.[30]

August 2

  • 15:00 UTC (9:00 a.m. MDT) at 18.3°N 114.0°W / 18.3; -114.0 Tropical Depression Ten-E strengthens into Tropical Storm Ignacio about 415 mi (670 km) southwest of the southern tip of Baja California.[31]
  • 21:00 UTC (3:00 p.m. MDT) at 18.8°N 114.9°W / 18.8; -114.9 Tropical Storm Ignacio reaches peak intensity with winds of 40 mph (65 km/h) and a minimum central pressure of 1,004 mbar (29.6 inHg) about 430 mi (690 km) southwest of the southern tip of Baja California.[32]

August 3

  • 09:00 UTC (2:00 a.m. PDT) at 17.0°N 123.9°W / 17.0; -123.9 Hurricane Hilda weakens into a Tropical Storm about 995 mi (1,600 km) west-southwest of the southern tip of Baja California.[33]
  • 09:00 UTC (2:00 a.m. PDT) at 20.1°N 116.3°W / 20.1; -116.3 Tropical Storm Ignacio weakens into a Tropical Depression about 455 mi (730 km) west-southwest of the southern tip of Baja California.[34]

August 4

  • 03:00 UTC (8:00 p.m. PDT August 3) at 20.1°N 115.0°W / 20.1; -115.0 Tropical Depression Ignacio transitions into a post-tropical cyclone about 1,055 mi (1,700 km) west-southwest of the southern tip of Baja California.[35]
  • 21:00 UTC (11:00 a.m. HST) at 14.9°N 135.7°W / 14.9; -135.7 Tropical Depression Nine-E regenerates about 1,770 mi (2,850 km) west-southwest of the southern tip of Baja California.[36]

August 5

  • 09:00 UTC (11:00 p.m. HST August 4) at 15.5°N 136.6°W / 15.5; -136.6 Tropical Depression Nine-E strengthens into Tropical Storm Jimena about 1,810 mi (2,915 km) west-southwest of the southern tip of Baja California.[37]
  • 15:00 UTC (5:00 a.m. HST) at 16.1°N 137.2°W / 16.1; -137.2 Tropical Storm Jimena reaches peak intensity with winds of 40 mph (65 km/h) and a minimum central pressure of 1,005 mbar (29.7 inHg) about 1,835 mi (2,955 km) west of the southern tip of Baja California.[38]
  • 15:00 UTC (8:00 a.m. PDT) at 21.0°N 130.2°W / 21.0; -130.2 Tropical Storm Hilda weakens into a tropical depression about 1,305 mi (2,100 km) west of the southern tip of Baja California.[39]

August 6

  • 15:00 UTC (8:00 a.m. PDT) at 23.1°N 134.1°W / 23.1; -134.1 Tropical Depression Hilda transitions into a post-tropical cyclone about 1,535 mi (2,470 km) west of the southern tip of Baja California.[40]
  • 21:00 UTC (11:00 a.m. HST) at 17.6°N 140.0°W / 17.6; -140.0 Tropical Storm Jimena weakens into a tropical depression about 1,000 mi (1,610 km) east of Hilo, Hawaii.[41]

August 7

August 8

  • 21:00 UTC (3:00 p.m. MDT) at 15.8°N 109.7°W / 15.8; -109.7 Tropical Storm Kevin reaches peak intensity with winds of 60 mph (95 km/h) and a minimum central pressure of 999 mbar (29.5 inHg) about 490 mi (790 km) south of the southern tip of Baja California.[45]

August 10

August 12

August 13

  • 15:00 UTC (9:00 a.m. MDT) at 16.9°N 111.8°W / 16.9; -111.8 Hurricane Linda strengthens into a category 2 hurricane about 430 mi (690 km) south-southwest of the southern tip of Baja California.[51]
  • 21:00 UTC (3:00 p.m. MDT) at 17.5°N 112.9°W / 17.5; -112.9 Hurricane Linda strengthens into a category 3 hurricane about 420 mi (675 km) south-southwest of the southern tip of Baja California.[52]

August 14

  • 15:00 UTC (8:00 a.m. PDT) at 18.8°N 116.1°W / 18.8; -116.1 Hurricane Linda strengthens into a category 4 hurricane about 490 mi (790 km) southwest of the southern tip of Baja California.[53]

August 15

  • 03:00 UTC (8:00 p.m. PDT August 14) at 19.3°N 118.2°W / 19.3; -118.2 Hurricane Linda weakens into a category 3 hurricane about 590 mi (950 km) west-southwest of the southern tip 6of Baja California.[54]
  • 21:00 UTC (11:00 a.m. HST) at 18.8°N 121.2°W / 18.8; -121.2 Hurricane Linda weakens into a category 2 hurricane about 780 mi (1,255 km) west-southwest of the southern tip of Baja California.[55]

August 17

  • 09:00 UTC (11:00 p.m. HST August 16) at 17.6°N 126.4°W / 17.6; -126.4 Hurricane Linda weakens into a category 1 hurricane about 1,130 mi (1,820 km) west-southwest of the southern tip of Baja California.[56]

August 18

  • 03:00 UTC (5:00 p.m. HST August 17) at 17.9°N 129.5°W / 17.9; -129.5 Hurricane Linda re-strengthens back into a category 2 hurricane about 1,315 mi (2,115 km) west-southwest of the southern tip of Baja California.[57]

August 19

August 20

August 23

August 24

  • 03:00 UTC (8:00 p.m. PDT August 23) at 20.7°N 115.8°W / 20.7; -115.8 Tropical Storm Marty reaches peak intensity with winds of 45 mph (70 km/h) and a minimum central pressure of 1,002 mbar (29.6 inHg) about 410 mi (660 km) west-southwest of the southern tip of Baja California.[62]
  • 15:00 UTC (8:00 a.m. PDT) at 20.6°N 118.1°W / 20.6; -118.1 Tropical Storm Marty weakens into a tropical depression about 550 mi (885 km) west-southwest of the southern tip of Baja California.[63]
  • 21:00 UTC (2:00 p.m. PDT) at 20.5°N 119.2°W / 20.5; -119.2 Tropical Depression Marty transitions into a post-tropical cyclone about 620 mi (1,000 km) west-southwest of the southern tip of Bala California.[64]

August 25

August 26

  • 15:00 UTC (10:00 a.m. CDT) at 12.5°N 100.8°W / 12.5; -100.8 Tropical Depression Fourteen-E strengthens into Tropical Storm Nora about 310 mi (500 km) south of Acapulco, Mexico.[66]

August 28

August 29

August 30

September

September 7

September 8

September 9

September 10

September 11

October

October 10

October 12

October 13

October 14

October 22

October 23

October 25

October 26

November

November 4

November 7

November 8

November 9

November 10

November 30

  • The Eastern and Central Pacific hurricane seasons officially end.[2]

See also

Notes

  1. An average Pacific hurricane season, as defined by the National Oceanic and Atmospheric Administration, has fifteen tropical storms, eight hurricanes and four major hurricanes.
  2. Hurricanes reaching Category 3 (111 miles per hour or 179 kilometers per hour) and higher on the five-level Saffir–Simpson wind speed scale are considered major hurricanes.

References

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  2. "Hurricane Season Information". Frequently Asked Questions About Hurricanes. Miami, Florida: NOAA Atlantic Oceanographic and Meteorological Laboratory. June 1, 2018. Retrieved April 13, 2021.
  3. Stewart, Stacy (June 30, 2021). Tropical Storm Andres Tropical Cyclone Report (PDF). nhc.noaa.gov (Report). Miami, Florida: National Hurricane Center. Retrieved Nov 2, 2021.
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