1978 season
Atlantic (24)
- Unnamed Subtropical Storm, AL01 1978Subtropical Storm · 45 mph · Jan 18–Jan 23
- Unnamed Tropical Depression, AL02 1978Tropical Depression · 30 mph · Jun 21–Jun 22
- Unnamed Tropical Depression, AL03 1978Tropical Depression · 35 mph · Jul 10–Jul 12
- Tropical Storm AmeliaTropical Storm · 50 mph · Jul 30–Aug 1
- Tropical Storm BessTropical Storm · 50 mph · Aug 5–Aug 8
- Hurricane CoraHurricane Category 1 · 90 mph · Aug 7–Aug 12
- Unnamed Tropical Depression, AL07 1978Tropical Depression · 35 mph · Aug 7–Aug 11
- Unnamed Tropical Depression, AL08 1978Tropical Depression · 30 mph · Aug 9–Aug 10
- Tropical Storm DebraTropical Storm · 60 mph · Aug 26–Aug 29
- Hurricane EllaHurricane Category 4 · 140 mph · Aug 30–Sep 5
- Unnamed Tropical Depression, AL11 1978Tropical Depression · 35 mph · Aug 30–Sep 1
- Unnamed Tropical Depression, AL12 1978Tropical Depression · 35 mph · Sep 3–Sep 11
- Hurricane FlossieHurricane Category 2 · 100 mph · Sep 4–Sep 16
- Unnamed Tropical Depression, AL14 1978Tropical Depression · 35 mph · Sep 8–Sep 10
- Tropical Storm HopeTropical Storm · 65 mph · Sep 12–Sep 21
- Hurricane GretaHurricane Category 4 · 130 mph · Sep 13–Sep 20
- Unnamed Tropical Depression, AL17 1978Tropical Depression · 35 mph · Sep 18–Sep 29
- Unnamed Tropical Depression, AL18 1978Tropical Depression · 35 mph · Sep 21–Sep 23
- Tropical Storm IrmaTropical Storm · 50 mph · Oct 2–Oct 5
- Tropical Storm JulietTropical Storm · 50 mph · Oct 7–Oct 11
- Unnamed Tropical Depression, AL21 1978Tropical Depression · 35 mph · Oct 13–Oct 17
- Unnamed Tropical Depression, AL22 1978Tropical Depression · 30 mph · Oct 26–Oct 29
- Hurricane KendraHurricane Category 1 · 80 mph · Oct 28–Nov 3
- Unnamed Tropical Depression, AL24 1978Tropical Depression · 30 mph · Nov 3–Nov 5
Eastern Pacific (18)
- Hurricane AlettaHurricane Category 1 · 75 mph · May 30–Jun 1
- Tropical Storm BudTropical Storm · 60 mph · Jun 17–Jun 20
- Hurricane CarlottaHurricane Category 4 · 130 mph · Jun 17–Jun 25
- Hurricane DanielHurricane Category 3 · 115 mph · Jun 26–Jul 3
- Tropical Storm EmiliaTropical Storm · 65 mph · Jul 6–Jul 10
- Hurricane FicoHurricane Category 4 · 140 mph · Jul 9–Jul 28
- Hurricane GilmaHurricane Category 3 · 115 mph · Jul 13–Jul 20
- Hurricane HectorHurricane Category 4 · 140 mph · Jul 22–Jul 29
- Hurricane IvaHurricane Category 1 · 75 mph · Aug 11–Aug 15
- Hurricane JohnHurricane Category 2 · 105 mph · Aug 18–Aug 30
- Hurricane KristyHurricane Category 2 · 105 mph · Aug 18–Aug 28
- Tropical Storm LaneTropical Storm · 50 mph · Aug 19–Aug 24
- Hurricane MiriamHurricane Category 1 · 90 mph · Aug 23–Sep 2
- Hurricane NormanHurricane Category 4 · 140 mph · Aug 30–Sep 7
- Hurricane OliviaHurricane Category 1 · 75 mph · Sep 20–Sep 23
- Tropical Storm PaulTropical Storm · 45 mph · Sep 23–Sep 27
- Hurricane RosaHurricane Category 1 · 85 mph · Oct 2–Oct 7
- Tropical Storm SergioTropical Storm · 40 mph · Oct 18–Oct 21
Central Pacific (1)
- Hurricane SusanHurricane Category 4 · 130 mph · Oct 18–Oct 24