Key - Shading by Saffir Simpson Hurricane Scale
| Tropical Depression or Unknown or Missing |
Tropical Storm | Hurricane Cat 1 | Cat 2 | Cat 3 | Cat 4 | Cat 5 |
1870
Storms are listed in the basin where they reached their maximum intensity. Asterisks denote landfall on a major island or continent.
| Northern Atlantic | Southern Indian |
|
AL01
*
Jul 29-31 |
UNNAMED
Oct 31-Nov 8 |
|
UNNAMED
Aug 1-3 |
UNNAMED
Dec 11-16 |
|
AL02
*
Aug 25-Sep 5 |
UNNAMED
Dec 10-14 |
|
AL03
Aug 29-Sep 13 |
UNNAMED
Jan 1-5 |
|
UNNAMED
Sep 8-20 |
UNNAMED
Jan 1-3 |
|
AL04
Sep 17-20 |
UNNAMED
Jan 21-25 |
|
UNNAMED
Sep 20-Oct 1 |
UNNAMED
Jan 21-23 |
|
UNNAMED
*
Oct 5-18 |
UNNAMED
Feb 11-17 |
|
UNNAMED
Oct 7-12 |
UNNAMED
Feb 14-19 |
|
UNNAMED
*
Oct 17-22 |
UNNAMED
Feb 21-Mar 1 |
|
AL05
*
Oct 22-24 |
UNNAMED
*
Apr 10-19 |
|
UNNAMED
Oct 24-25 |
UNNAMED
Apr 11-22 |
|
UNNAMED
*
Oct 27-Nov 4 |
UNNAMED
Apr 10-20 |
|
AL06
Nov 5-16 |
|
|
UNNAMED
Nov 20-26 |