hurricanesmapped

NORTH ATLANTIC · SEASON MAP

1984 Atlantic hurricane season

Every recorded track, mapped · 20 storms · 11 Jun 1984–24 Dec 1984

ACCUMULATED CYCLONE ENERGY84.3
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1984 Atlantic hurricane season: every recorded storm trackRecorded tracks of all 20 storms, colored by the wind category at each observation. Hover or focus a storm in the table to highlight its track.UNITED STATESCANADAMEXICOCUBABRAZILAFRICAEUROPECHINAJAPANINDIAGulf of MexicoAtlantic OceanPacific OceanArabian SeaBay of BengalUnnamed: 11 Jun–14 Jun, peak 30 kt, Tropical depressionUnnamed: 18 Jun–20 Jun, peak 30 kt, Tropical depressionUnnamed: 24 Jul–26 Jul, peak 30 kt, Tropical depressionUnnamed: 6 Aug–8 Aug, peak 30 kt, Tropical depressionUnnamed: 18 Aug–21 Aug, no US-agency windArthur: 28 Aug–5 Sep, peak 45 kt, Tropical stormBertha: 30 Aug–4 Sep, peak 35 kt, Tropical stormCesar: 31 Aug–2 Sep, peak 50 kt, Tropical stormUnnamed: 6 Sep–8 Sep, peak 30 kt, Tropical depressionDiana: 8 Sep–16 Sep, peak 115 kt, Category 4Edouard: 14 Sep–15 Sep, peak 55 kt, Tropical stormFran: 15 Sep–20 Sep, peak 55 kt, Tropical stormGustav: 16 Sep–19 Sep, peak 45 kt, Tropical stormHortense: 24 Sep–2 Oct, peak 65 kt, Category 1Isidore: 25 Sep–1 Oct, peak 50 kt, Tropical stormJosephine: 8 Oct–18 Oct, peak 90 kt, Category 2Unnamed: 25 Oct–28 Oct, peak 30 kt, Tropical depressionKlaus: 5 Nov–12 Nov, peak 80 kt, Category 1Unnamed: 23 Nov–28 Nov, peak 30 kt, Tropical depressionLili: 20 Dec–24 Dec, peak 70 kt, Category 1

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Whole season

DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5Post-tropical
Every storm of the 1984 Atlantic hurricane season. Column headers sort the list.
Unnamed–30Tropical depression—360
Unnamed–30Tropical depression—290
Unnamed–30Tropical depression—1,330
Unnamed–30Tropical depression—480
Unnamed–—Unclassified—1,560
Arthur–45Tropical storm10041,440
Bertha–35Tropical storm10071,790
Cesar–50Tropical storm9921,010
Unnamed–30Tropical depression—190
Diana–115Cat 49491,820
Edouard–55Tropical storm99880
Fran–55Tropical storm9941,430
Gustav–45Tropical storm1006430
Hortense–65Cat 19932,550
Isidore–50Tropical storm9991,790
Josephine–90Cat 29653,110
Unnamed–30Tropical depression—1,020
Klaus–80Cat 19712,270
Unnamed–30Tropical depression—1,720
Lili–70Cat 19803,480

20 storms with an IBTrACS 1984 hurricane season record. Tracks are the archived center positions, first observation 11 Jun 1984, last 24 Dec 1984.

Tropical storms13

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

Hurricanes5

64 kt or more, one-minute sustained

Major (Category 3+)1

96 kt or more, Saffir–Simpson scale

Category 50

137 kt or more at any tropical-stage observation

Strongest stormDiana

115 kt · 132 mph / 213 km/h

Lowest pressure949 hPa

Diana, 12 Sept 1984

Longest track record13.8 days

Josephine, full archive record

Storms without US-agency wind1

Mapped, but outside the counts above

QUICK ANSWERS

The 1984 season in brief

How many hurricanes were there in the 1984 Atlantic hurricane season?

The archive records 5 hurricanes (one-minute winds of 64 kt or more) among 13 tropical storms, with 1 major hurricane reaching 96 kt. Counts use US-agency winds during the tropical stage.

What was the strongest storm of the 1984 Atlantic hurricane season?

Diana, with a peak one-minute sustained wind of 115 kt (Category 4) on 12 Sept 1984, 00:00 UTC and a minimum central pressure of 949 hPa.

How many Category 5 storms were there in 1984?

None. No storm in the 1984 Atlantic hurricane season reached Category 5 on the Saffir–Simpson one-minute wind scale in the archive.

When did the 1984 Atlantic hurricane season start and end?

The first tropical-stage observation is on 11 Jun 1984 and the last on 24 Dec 1984, from 20 tracked storms in the archive.

What was the first hurricane of the 1984 Atlantic hurricane season?

Diana, which reached hurricane strength (64 kt) on 10 Sept 1984, 12:00 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 North Atlantic basin for the 1984 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 North Atlantic 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