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Subject: E17) How many hurricanes have there been in each month?
Contributed by Chris Landsea
This table shows the total and average
number of tropical storms, and those which became hurricanes, by
month, for the period 1851-2006. It also shows the monthly total
and average number of hurricanes to strike the U. S. since 1851.
Total and Average Number of Tropical Storms by Month
Month |
Tropical Storms$ |
Hurricanes |
U.S. Landfalling Hurricanes |
Total | Average | Total | Average | Total | Average |
JANUARY-APRIL | 5 | * | 1 | * | 0 | * |
MAY | 18 | 0.1 | 4 | * | 0 | * |
JUNE | 79 | 0.5 | 28 | 0.2 | 19 | 0.12 |
JULY | 101 | 0.6 | 50 | 0.3 | 25 | 0.15 |
AUGUST | 344 | 2.2 | 217 | 1.4 | 75 | 0.48 |
SEPTEMBER | 459 | 3.0 | 319 | 2.0 | 104 | 0.67 |
OCTOBER | 280 | 1.8 | 159 | 1.0 | 51 | 0.33 |
NOVEMBER | 61 | 0.4 | 39 | 0.2 | 5 | 0.03 |
DECEMBER | 10 | 0.1 | 5 | * | 0 | * |
|
YEAR | 1357 | 8.5 | 822 | 5.2 | 279 | 1.78 |
* Less than 0.05.
$ Includes subtropical storms after 1967. See Neumann et al. (1999) for details.
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