hurricanesmapped

EASTERN PACIFIC · SEASON MAP

2004 Pacific hurricane season

Every recorded track, mapped · 17 storms · 22 May 2004–26 Oct 2004

ACCUMULATED CYCLONE ENERGY71.1
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2004 Pacific hurricane season: every recorded storm trackRecorded tracks of all 17 storms, colored by the wind category at each observation. Hover or focus a storm in the table to highlight its track.UNITED STATESMEXICOCUBACHINAJAPANPHILIPPINESINDIAGulf of MexicoAtlantic OceanPacific OceanPhilippine SeaArabian SeaBay of BengalAgatha: 22 May–24 May, peak 50 kt, Tropical stormUnnamed: 2 Jul–3 Jul, peak 30 kt, Tropical depressionUnnamed: 4 Jul–6 Jul, peak 25 kt, Tropical depressionBlas: 12 Jul–15 Jul, peak 55 kt, Tropical stormCelia: 19 Jul–25 Jul, peak 75 kt, Category 1Darby: 26 Jul–1 Aug, peak 105 kt, Category 3Unnamed: 1 Aug–2 Aug, peak 25 kt, Tropical depressionEstelle: 19 Aug–24 Aug, peak 60 kt, Tropical stormFrank: 23 Aug–26 Aug, peak 75 kt, Category 1Unnamed: 23 Aug–26 Aug, peak 30 kt, Tropical depressionGeorgette: 26 Aug–30 Aug, peak 55 kt, Tropical stormHoward: 30 Aug–5 Sep, peak 120 kt, Category 4Isis: 8 Sep–16 Sep, peak 65 kt, Category 1Javier: 10 Sep–19 Sep, peak 130 kt, Category 4Kay: 4 Oct–6 Oct, peak 40 kt, Tropical stormLester: 11 Oct–13 Oct, peak 45 kt, Tropical stormUnnamed: 25 Oct–26 Oct, peak 30 kt, Tropical depression

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Whole season

DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5Post-tropical
Every storm of the 2004 Pacific hurricane season. Column headers sort the list.
Agatha–50Tropical storm997430
Unnamed–30Tropical depression1007640
Unnamed–25Tropical depression1007660
Blas–55Tropical storm9911,590
Celia–75Cat 19811,410
Darby–105Cat 39571,760
Unnamed–25Tropical depression1008110
Estelle–60Tropical storm9891,390
Frank–75Cat 1979780
Unnamed–30Tropical depression1005930
Georgette–55Tropical storm9952,360
Howard–120Cat 49432,060
Isis–65Cat 19871,890
Javier–130Cat 49301,880
Kay–40Tropical storm1004600
Lester–45Tropical storm1000270
Unnamed–30Tropical depression1004450

17 storms with an IBTrACS 2004 hurricane season record. Tracks are the archived center positions, first observation 22 May 2004, last 26 Oct 2004.

Tropical storms12

Tropical-stage US-agency wind of 34 kt or more

Hurricanes6

64 kt or more, one-minute sustained

Major (Category 3+)3

96 kt or more, Saffir–Simpson scale

Category 50

137 kt or more at any tropical-stage observation

Strongest stormJavier

130 kt · 150 mph / 241 km/h

Lowest pressure930 hPa

Javier, 14 Sept 2004

Longest track record12.8 days

Isis, full archive record

Storms without US-agency wind0

Mapped, but outside the counts above

QUICK ANSWERS

The 2004 season in brief

How many hurricanes were there in the 2004 Pacific hurricane season?

The archive records 6 hurricanes (one-minute winds of 64 kt or more) among 12 tropical storms, with 3 major hurricanes reaching 96 kt. Counts use US-agency winds during the tropical stage.

What was the strongest storm of the 2004 Pacific hurricane season?

Javier, with a peak one-minute sustained wind of 130 kt (Category 4) on 14 Sept 2004, 00:00 UTC and a minimum central pressure of 930 hPa.

How many Category 5 storms were there in 2004?

None. No storm in the 2004 Pacific hurricane season reached Category 5 on the Saffir–Simpson one-minute wind scale in the archive.

When did the 2004 Pacific hurricane season start and end?

The first tropical-stage observation is on 22 May 2004 and the last on 26 Oct 2004, from 17 tracked storms in the archive.

What was the first hurricane of the 2004 Pacific hurricane season?

Celia, which reached hurricane strength (64 kt) on 22 Jul 2004, 00:00 UTC.

METHODOLOGY

Data sources and limitations

The map and totals are generated from NOAA’s IBTrACS v04r01 archive. A storm belongs to this page when the archive lists it in the Eastern Pacific basin for the 2004 season, so a December storm whose track ends in January stays with its season. Storms that cross between basins appear on the page of their archive basin only.

Counts use US-agency one-minute winds during the tropical stage: 34 kt for a tropical storm, 64 kt for hurricane strength and 96 kt for major intensity, on the Saffir–Simpson scale in every basin. Local agencies classify storms differently, and official season summaries can differ from the archive. Accumulated cyclone energy sums squared winds at six-hourly synoptic times, counting observations in the calendar year. Storms with no US-agency wind are mapped but cannot enter the counts.

The map frame is the same for every Eastern Pacific season, so a track that leaves it is cut at the edge. Lines show each storm’s center, not its size, rainfall or flood extent. Coastlines use Natural Earth’s 1:10m land data.

Archive retrieved

NOAA IBTrACS archive · Field documentation

Sources & methodology