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WESTERN PACIFIC · SEASON MAP

2004 Pacific typhoon season

Every recorded track, mapped · 34 storms · 12 Feb 2004–21 Dec 2004

ACCUMULATED CYCLONE ENERGY477.3
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2004 Pacific typhoon season: every recorded storm trackRecorded tracks of all 34 storms, colored by the wind category at each observation. Hover or focus a storm in the table to highlight its track.UNITED STATESCANADAMEXICOAFRICAEUROPECHINAJAPANPHILIPPINESINDIAGulf of MexicoPacific OceanPhilippine SeaArabian SeaBay of BengalUnnamed: 12 Feb–19 Feb, peak 40 kt, Tropical stormUnnamed: 16 Mar–23 Mar, peak 35 kt, Tropical stormSudal: 2 Apr–16 Apr, peak 130 kt, Category 4Nida: 13 May–21 May, peak 140 kt, Category 5Unnamed: 14 May–18 May, peak 35 kt, Tropical stormOmais: 15 May–22 May, peak 60 kt, Tropical stormConson: 5 Jun–11 Jun, peak 100 kt, Category 3Chanthu: 8 Jun–15 Jun, peak 75 kt, Category 1Dianmu: 12 Jun–21 Jun, peak 155 kt, Category 5Mindulle: 23 Jun–3 Jul, peak 125 kt, Category 4Tingting: 25 Jun–4 Jul, peak 80 kt, Category 1Kompasu: 11 Jul–16 Jul, peak 45 kt, Tropical stormNamtheun: 25 Jul–3 Aug, peak 115 kt, Category 4Unnamed: 26 Jul–27 Jul, no US-agency windMalou: 4 Aug–6 Aug, peak 35 kt, Tropical stormMeranti: 3 Aug–9 Aug, peak 90 kt, Category 2Rananim: 6 Aug–15 Aug, peak 90 kt, Category 2Malakas: 9 Aug–14 Aug, peak 35 kt, Tropical stormMegi: 13 Aug–20 Aug, peak 65 kt, Category 1Chaba: 18 Aug–30 Aug, peak 155 kt, Category 5Aere: 19 Aug–31 Aug, peak 90 kt, Category 2Unnamed: 26 Aug–28 Aug, peak 30 kt, Tropical depressionSongda: 27 Aug–7 Sep, peak 125 kt, Category 4Sarika: 3 Sep–9 Sep, peak 60 kt, Tropical stormHaima: 11 Sep–13 Sep, peak 35 kt, Tropical stormMeari: 19 Sep–29 Sep, peak 125 kt, Category 4Ma-On: 4 Oct–9 Oct, peak 140 kt, Category 5Tokage: 11 Oct–20 Oct, peak 125 kt, Category 4Nock-Ten: 14 Oct–25 Oct, peak 110 kt, Category 3Muifa: 14 Nov–26 Nov, peak 115 kt, Category 4Merbok: 22 Nov–23 Nov, no US-agency windNanmadol: 28 Nov–4 Dec, peak 130 kt, Category 4Talas: 9 Dec–20 Dec, peak 50 kt, Tropical stormNoru: 17 Dec–21 Dec, peak 55 kt, Tropical storm

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Whole season

DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5Post-tropical
Every storm of the 2004 Pacific typhoon season. Column headers sort the list.
Unnamed–40Tropical storm9941,530
Unnamed–35Tropical storm9971,750
Sudal–130Cat 49104,660
Nida–140Cat 58982,930
Unnamed–35Tropical storm997540
Omais–60Tropical storm9801,480
Conson–100Cat 39443,840
Chanthu–75Cat 19672,530
Dianmu–155Cat 58794,520
Mindulle–125Cat 49163,280
Tingting–80Cat 19634,370
Kompasu–45Tropical storm9911,380
Namtheun–115Cat 49272,290
Unnamed–—Unclassified—320
Meranti–90Cat 29542,280
Malou–35Tropical storm9971,710
Rananim–90Cat 29541,940
Malakas–35Tropical storm9941,900
Megi–65Cat 19764,170
Chaba–155Cat 58795,300
Aere–90Cat 29542,680
Unnamed–30Tropical depression1000540
Songda–125Cat 49165,660
Sarika–60Tropical storm9801,680
Haima–35Tropical storm9972,530
Meari–125Cat 49163,950
Ma-On–140Cat 58982,310
Tokage–125Cat 49165,320
Nock-Ten–110Cat 39334,090
Muifa–115Cat 49272,590
Merbok–—Unclassified1000370
Nanmadol–130Cat 49102,640
Talas–50Tropical storm9873,360
Noru–55Tropical storm9842,610

34 storms with an IBTrACS 2004 typhoon season record. Tracks are the archived center positions, first observation 12 Feb 2004, last 21 Dec 2004.

Tropical storms31

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

Typhoons20

64 kt or more, one-minute sustained

Major (Category 3+)14

96 kt or more, Saffir–Simpson scale

Category 54

137 kt or more at any tropical-stage observation

Strongest stormDianmu

155 kt · 178 mph / 287 km/h

Lowest pressure879 hPa

Dianmu, 16 Jun 2004

Longest track record19.5 days

Chaba, full archive record

Storms without US-agency wind2

Mapped, but outside the counts above

QUICK ANSWERS

The 2004 season in brief

How many typhoons were there in the 2004 Pacific typhoon season?

The archive records 20 typhoons (one-minute winds of 64 kt or more) among 31 tropical storms, with 14 major typhoons reaching 96 kt. Counts use US-agency winds during the tropical stage.

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

Dianmu, with a peak one-minute sustained wind of 155 kt (Category 5) on 16 Jun 2004, 06:00 UTC and a minimum central pressure of 879 hPa.

How many Category 5 storms were there in 2004?

4 storms in the 2004 Pacific typhoon season reached Category 5 on the Saffir–Simpson one-minute wind scale: Nida, Dianmu, Chaba, Ma-On.

When did the 2004 Pacific typhoon season start and end?

The first tropical-stage observation is on 12 Feb 2004 and the last on 21 Dec 2004, from 34 tracked storms in the archive.

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

Sudal, which reached typhoon strength (64 kt) on 6 Apr 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 Western 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 typhoon 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 Western 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