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WESTERN PACIFIC · SEASON MAP

1977 Pacific typhoon season

Every recorded track, mapped · 28 storms · 10 Jan 1977–8 Jan 1978

ACCUMULATED CYCLONE ENERGY162.0
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1977 Pacific typhoon season: every recorded storm trackRecorded tracks of all 28 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: 10 Jan–13 Jan, no US-agency windPatsy: 23 Mar–29 Mar, peak 50 kt, Tropical stormUnnamed: 24 May–28 May, peak 30 kt, Tropical depressionRuth: 12 Jun–17 Jun, peak 60 kt, Tropical stormUnnamed: 3 Jul–6 Jul, peak 30 kt, Tropical depressionSarah: 15 Jul–22 Jul, peak 75 kt, Category 1Thelma: 19 Jul–25 Jul, peak 85 kt, Category 2Vera: 25 Jul–1 Aug, peak 110 kt, Category 3Wanda: 29 Jul–7 Aug, peak 45 kt, Tropical stormUnnamed: 13 Aug–16 Aug, no US-agency windUnnamed: 15 Aug–17 Aug, no US-agency windAmy: 16 Aug–25 Aug, peak 40 kt, Tropical stormUnnamed: 21 Aug–22 Aug, no US-agency windUnnamed: 27 Aug–28 Aug, no US-agency windCarla: 30 Aug–4 Sep, peak 35 kt, Tropical stormBabe: 31 Aug–11 Sep, peak 130 kt, Category 4Dinah: 11 Sep–27 Sep, peak 75 kt, Category 1Emma: 12 Sep–21 Sep, peak 60 kt, Tropical stormFreda: 21 Sep–26 Sep, peak 55 kt, Tropical stormGilda: 2 Oct–8 Oct, peak 70 kt, Category 1Unnamed: 11 Oct–14 Oct, no US-agency windUnnamed: 13 Oct–16 Oct, no US-agency windHarriet: 14 Oct–20 Oct, peak 55 kt, Tropical stormIvy: 18 Oct–27 Oct, peak 90 kt, Category 2Jean: 27 Oct–5 Nov, peak 65 kt, Category 1Kim: 4 Nov–17 Nov, peak 125 kt, Category 4Lucy: 26 Nov–8 Dec, peak 115 kt, Category 4Mary: 18 Dec–8 Jan, peak 95 kt, Category 2

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Whole season

DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5Post-tropical
Every storm of the 1977 Pacific typhoon season. Column headers sort the list.
Unnamed–—Unclassified—610
Patsy–50Tropical storm9901,210
Unnamed–30Tropical depression—4,390
Ruth–60Tropical storm9755,000
Unnamed–30Tropical depression—810
Sarah–75Cat 19702,820
Thelma–85Cat 29501,970
Vera–110Cat 39251,750
Wanda–45Tropical storm9853,400
Unnamed–—Unclassified—1,090
Unnamed–—Unclassified—2,750
Amy–40Tropical storm9852,330
Unnamed–—Unclassified9881,490
Unnamed–—Unclassified—500
Carla–35Tropical storm9902,030
Babe–130Cat 49053,320
Dinah–75Cat 19653,340
Emma–60Tropical storm9653,530
Freda–55Tropical storm9801,680
Gilda–70Cat 19652,930
Unnamed–—Unclassified9901,880
Unnamed–—Unclassified—1,110
Harriet–55Tropical storm9803,780
Ivy–90Cat 29403,220
Jean–65Cat 19702,000
Kim–125Cat 49203,470
Lucy–115Cat 49204,960
Mary–95Cat 29455,370

28 storms with an IBTrACS 1977 typhoon season record. Tracks are the archived center positions, first observation 10 Jan 1977, last 8 Jan 1978.

Tropical storms19

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

Typhoons11

64 kt or more, one-minute sustained

Major (Category 3+)4

96 kt or more, Saffir–Simpson scale

Category 50

137 kt or more at any tropical-stage observation

Strongest stormBabe

130 kt · 150 mph / 241 km/h

Lowest pressure905 hPa

Babe, 8 Sept 1977

Longest track record20.8 days

Mary, full archive record

Storms without US-agency wind7

Mapped, but outside the counts above

QUICK ANSWERS

The 1977 season in brief

How many typhoons were there in the 1977 Pacific typhoon season?

The archive records 11 typhoons (one-minute winds of 64 kt or more) among 19 tropical storms, with 4 major typhoons reaching 96 kt. Counts use US-agency winds during the tropical stage.

What was the strongest storm of the 1977 Pacific typhoon season?

Babe, with a peak one-minute sustained wind of 130 kt (Category 4) on 8 Sept 1977, 00:00 UTC and a minimum central pressure of 905 hPa.

How many Category 5 storms were there in 1977?

None. No storm in the 1977 Pacific typhoon season reached Category 5 on the Saffir–Simpson one-minute wind scale in the archive.

When did the 1977 Pacific typhoon season start and end?

The first tropical-stage observation is on 10 Jan 1977 and the last on 8 Jan 1978, from 28 tracked storms in the archive.

What was the first typhoon of the 1977 Pacific typhoon season?

Sarah, which reached typhoon strength (64 kt) on 19 Jul 1977, 15:00 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 1977 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