1970 season
Atlantic (21)
- Hurricane AlmaHurricane Category 1 · 75 mph · May 17–May 27
- Tropical Storm BeckyTropical Storm · 65 mph · 1 landfall · Jul 19–Jul 23
- Unnamed Tropical Depression, AL03 1970Tropical Depression · 35 mph · Jul 28–Aug 1
- Hurricane CeliaHurricane Category 4 · 140 mph · 2 landfalls · Jul 31–Aug 5
- Unnamed Tropical Depression, AL05 1970Tropical Depression · 35 mph · Aug 2–Aug 6
- Unnamed Hurricane, AL08 1970Hurricane Category 1 · 80 mph · 2 landfalls · Aug 7–Aug 24
- Unnamed Tropical Depression, AL07 1970Tropical Depression · 35 mph · Aug 11–Aug 18
- Tropical Storm DorothyTropical Storm · 70 mph · 1 landfall · Aug 18–Aug 22
- Unnamed Tropical Depression, AL20 1970Tropical Depression · 35 mph · Sep 1–Sep 2
- Unnamed Tropical Storm, AL10 1970Tropical Storm · 45 mph · Sep 3–Sep 13
- Unnamed Tropical Depression, AL11 1970Tropical Depression · 30 mph · Sep 5–Sep 7
- Hurricane EllaHurricane Category 3 · 125 mph · 2 landfalls · Sep 8–Sep 13
- Tropical Storm FeliceTropical Storm · 70 mph · 1 landfall · Sep 12–Sep 19
- Unnamed Tropical Storm, AL21 1970Tropical Storm · 45 mph · Sep 19–Sep 23
- Unnamed Tropical Depression, AL14 1970Tropical Depression · 30 mph · Sep 22–Sep 25
- Tropical Storm GretaTropical Storm · 45 mph · Sep 26–Oct 4
- Unnamed Hurricane, AL15 1970Hurricane Category 1 · 85 mph · Sep 30–Oct 22
- Unnamed Hurricane, AL18 1970Hurricane Category 2 · 100 mph · Oct 12–Oct 17
- Unnamed Hurricane, AL19 1970Hurricane Category 2 · 100 mph · Oct 20–Oct 28
- Unnamed Tropical Depression, AL22 1970Tropical Depression · 35 mph · Nov 13–Nov 15
- Unnamed Tropical Storm, AL23 1970Tropical Storm · 70 mph · Nov 26–Dec 6
Eastern Pacific (18)
- Hurricane AdeleHurricane Category 1 · 85 mph · May 30–Jun 7
- Tropical Storm BlancaTropical Storm · 60 mph · Jun 10–Jun 12
- Tropical Storm ConnieTropical Storm · 50 mph · Jun 17–Jun 21
- Tropical Storm EileenTropical Storm · 45 mph · Jun 26–Jun 30
- Hurricane FrancescaHurricane Category 2 · 100 mph · Jul 1–Jul 10
- Tropical Storm GretchenTropical Storm · 50 mph · Jul 14–Jul 21
- Tropical Storm HelgaTropical Storm · 60 mph · Jul 16–Jul 20
- Tropical Storm Ione-2Tropical Storm · 50 mph · Jul 22–Jul 26
- Tropical Storm Ione-1Tropical Storm · 60 mph · Jul 24–Jul 25
- Tropical Storm JoyceTropical Storm · 60 mph · Jul 29–Aug 4
- Tropical Storm KristenTropical Storm · 50 mph · Aug 5–Aug 8
- Hurricane LorraineHurricane Category 2 · 100 mph · Aug 16–Aug 27
- Tropical Storm MaggieTropical Storm · 60 mph · Aug 20–Aug 27
- Tropical Storm NormaTropical Storm · 60 mph · Aug 31–Sep 6
- Tropical Storm OrleneTropical Storm · 65 mph · Sep 7–Sep 9
- Hurricane PatriciaHurricane Category 2 · 110 mph · Oct 4–Oct 11
- Tropical Storm RosalieTropical Storm · 50 mph · Oct 21–Oct 23
- Tropical Storm SelmaTropical Storm · 70 mph · Nov 1–Nov 8
Central Pacific (1)
- Hurricane DotHurricane Category 1 · 80 mph · Sep 1–Sep 4