EASTERN PACIFIC · SEASON MAP
1984 Pacific hurricane season
Every recorded track, mapped · 21 storms · 17 May 1984–8 Nov 1984
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| Alma | – | 50 | Tropical storm | — | 1,280 |
|---|---|---|---|---|---|
| Boris | – | 65 | Cat 1 | — | 1,910 |
| Cristina | – | 90 | Cat 2 | — | 1,300 |
| Douglas | – | 125 | Cat 4 | — | 2,560 |
| Elida | – | 115 | Cat 4 | — | 1,930 |
| Fausto | – | 95 | Cat 2 | — | 1,000 |
| Genevieve | – | 100 | Cat 3 | — | 1,310 |
| Hernan | – | 45 | Tropical storm | — | 850 |
| Iselle | – | 115 | Cat 4 | — | 1,850 |
| Julio | – | 55 | Tropical storm | — | 690 |
| Keli | – | 100 | Cat 3 | — | 1,470 |
| Kenna | – | 50 | Tropical storm | — | 800 |
| Lala | – | 45 | Tropical storm | — | 2,110 |
| Lowell | – | 75 | Cat 1 | — | 1,100 |
| Moke | – | — | Unclassified | — | 0 |
| Marie | – | 80 | Cat 1 | — | 1,260 |
| Norbert | – | 115 | Cat 4 | — | 1,890 |
| Odile | – | 90 | Cat 2 | — | 710 |
| Polo | – | 100 | Cat 3 | — | 1,560 |
| Rachel | – | 55 | Tropical storm | — | 1,390 |
| Simon | – | 55 | Tropical storm | — | 2,110 |
21 storms with an IBTrACS 1984 hurricane season record. Tracks are the archived center positions, first observation 17 May 1984, last 8 Nov 1984.
Tropical-stage US-agency wind of 34 kt or more
64 kt or more, one-minute sustained
96 kt or more, Saffir–Simpson scale
137 kt or more at any tropical-stage observation
125 kt · 144 mph / 232 km/h
No tropical-stage pressure in the archive
Boris, full archive record
Mapped, but outside the counts above
QUICK ANSWERS
The 1984 season in brief
How many hurricanes were there in the 1984 Pacific hurricane season?
The archive records 13 hurricanes (one-minute winds of 64 kt or more) among 21 tropical storms, with 7 major hurricanes reaching 96 kt. Counts use US-agency winds during the tropical stage.
What was the strongest storm of the 1984 Pacific hurricane season?
Douglas, with a peak one-minute sustained wind of 125 kt (Category 4) on 29 Jun 1984, 00:00 UTC.
How many Category 5 storms were there in 1984?
None. No storm in the 1984 Pacific hurricane season reached Category 5 on the Saffir–Simpson one-minute wind scale in the archive.
When did the 1984 Pacific hurricane season start and end?
The first tropical-stage observation is on 17 May 1984 and the last on 8 Nov 1984, from 21 tracked storms in the archive.
What was the first hurricane of the 1984 Pacific hurricane season?
Boris, which reached hurricane strength (64 kt) on 30 May 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 Eastern Pacific 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 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