STATISTICAL ABSTRACT: ATLANTIC HURRICANE SEASONS
Hurricane Seasons: 1950-2003
Total Storms:
Named Storms: 535
Hurricanes: 324
Major Hurricanes: 137
Category 5 Hurricanes: 23
Category 4 Hurricanes: 48
Category 3 Hurricanes: 66
Category 2 Hurricanes: 59
Category 1 Hurricanes: 128
Tropical Storms: 207
Named Storms:
Most: 19, 1995
Least: 4, 1972 and 1983
Average: 9.9
Hurricanes:
Most: 12, 1969
Least: 2, 1982
Average: 6.0
Major Hurricanes:
Most: 8, 1950
Least: 0, 1968, 1972, 1986, and 1994
Average: 2.5
Highest Percentage of Hurricanes becoming Major Hurricanes: 100%, 1964 (6H/6MH)
Lowest Percentage of Hurricanes becoming Major Hurricanes: 0%, 1968 (5H/0MH)
…Note: 1972, 1986, and 1994 also had no major hurricanes but had fewer hurricanes
Highest Percentage of Named Storms becoming Major Hurricanes: 63.6%, 1961 (11S/7MH)
Lowest Percentage of Named Storms becoming Major Hurricanes: 0%, 1968 (8S/0MH)
…Note: 1972, 1986, and 1994 also had no major hurricanes but had fewer named storms
Hurricanes:
Most Category 5 Storms: 2, 1960, 1961, and 1998
Most Category 4 Storms: 5, 1999
Most Category 4 or 5 Storms: 5, 1999
Most Category 3 Storms: 5, 1950
Most Category 3 Storms or Stronger: 8, 1950
Most Category 2 Storms: 4, 1998
Most Category 1 Storms: 5, 1959, 1968, 1969, and 1990
Most Category 1 or 2 Storms: 7, 1969, 1980, 1990, and 1998
Years with 4 or More Category 4 or Stronger Storms: 1961, 1964, and 1999
Years with at least 1 storm of every Category: 1950, 1951, 1955
Tropical Storms:
Most: 9, 2003
Least: 1, 1952, 1972, 1977, and 1983
Average: 3.8
Seasonal Productivity:
Most days between named storms: 43.5 days, 1952
Fewest days between named storms: 5.2 days, 1950
Average: 12.3 days
Most days between hurricanes: 60.0 days, 1982
Fewest days between hurricanes: 6.1 days, 1950
Average: 23.0 days
Length of Season:
Longest season: 261 days, 1952 (February 2-October 20)
Shortest season: 42 days, 1983 (August 15-September 26)
Average: 121.4 days
…Note: Length of season is measured from the dates storms formed
Storm Formation:
Earliest date for the first named storm: February 2, 1952
Latest date for the first named storm: August 29, 1977
Years in which the first named storm formed before June 1: 1951, 1952, 1953, 1959, 1970, 1981, and 2003
Years in which the first named storm formed August 1 or later: 1950, 1962, 1967, 1974, 1977, 1983, 1984, 1987, 1988, 1992, and 2000
Earliest date for the last named storm: September 17, 1960
Latest date for the last named storm: December 30, 1954
Years in which the last storm formed September 30 or earlier: 1960, 1982, 1983, 1993, and 2002
Years in which the last storm formed December 1 or later: 1953, 1954, 1975, 1984, and 2003
Named Storms by Month of Formation:
February: 1
April: 1
May: 5
June: 31
July: 46
August: 141
September: 190
October: 92
November: 23
December: 5
Hurricanes by Month of Formation:
May: 2
June: 10
July: 25
August: 89
September: 126
October: 54
November: 16
December: 2
Percentage of Named Storms Becoming Hurricanes by Month of Formation:
February: 0.0%
April: 0.0%
May: 40.0%
June: 32.3%
July: 54.3%
August: 63.1%
September: 66.3%
October: 58.6%
November: 69.6%
December: 40.0%
Major Hurricanes by Month of Formation:
May: 1
June: 2
July: 4
August: 48
September: 65
October: 15
November: 2
Percentage of Hurricanes Becoming Major Hurricanes by Month of Formation:
May: 50.0%
June: 20.0%
July: 16.0%
August: 53.9%
September: 51.6%
October: 27.8%
November: 12.5%
December: 0.0%
Early-Starting Seasons and Statistics:
Seasons beginning before June 1:
Averages:
Named Storms: 11.1
Hurricanes: 6.4
Major Hurricanes: 3.1
Most Named Storms: 16, 2003
Least Named Storms: 6, 1952
Most Hurricanes: 7, 1959, 1981, and 2003
Least Hurricanes: 5, 1952 and 1970
Most Major Hurricanes: 5, 1951
Least Major Hurricanes: 2, 1959 and 1970
Late-Starting Seasons and Statistics:
Seasons beginning on or after August 1:
Averages:
Named Storms: 8.5
Hurricanes: 5.2
Major Hurricanes: 2.1
Most Named Storms: 14, 2000
Least Named Storms: 4, 1983
Most Hurricanes: 11, 1950
Least Hurricanes: 3, 1962, 1983, and 1987
Most Major Hurricanes: 8, 1950
Least Major Hurricanes: 1, 1962, 1967, 1977, 1983, 1984, 1987, and 1992
Date of First Storm and Number of Storms:
Before June 1:
6/7 (86%) of seasons had 10 or more named storms; 1/7 (14%) had 8 or fewer named storms
…Average: 11.1 named storms; 6.4 hurricanes; 3.1 major hurricanes
…Most: 16 named storms; 8 hurricanes; 5 major hurricanes
…Least: 6 named storms; 5 hurricanes; 2 major hurricanes
Month in which the last named storm formed:
October: 4
November: 2
December: 2
Earliest: October 15
Latest: December 7
June 1-June 30:
9/23 (39%) of seasons had 10 or more named storms; 14/23 (51%) had 8 or fewer named storms
…Average: 9.2 named storms; 5.5 hurricanes; 2.4 major hurricanes
…Most: 19 named storms; 11 hurricanes; 6 major hurricanes
…Least: 4 named storms; 2 hurricanes; 0 major hurricanes
Month in which the last named storm formed:
September: 3
October: 9
November: 9
December: 2
Earliest: September 17
Latest: December 30
July 1-July 31:
10/13 (77%) of seasons had 10 or more named storms; 2/13 (15%) had 8 or fewer named storms
…Average: 11.5 named storms; 7.3 hurricanes; 2.8 major hurricanes
…Most: 17 named storms; 12 hurricanes; 7 major hurricanes
…Least: 7 named storms; 4 hurricanes; 1 major hurricane
Month in which the last named storm formed:
September: 1
October: 6
November: 6
Earliest: September 21
Latest: November 25
August 1 or later:
4/11 (36%) of seasons had 10 or more named storms; 7/11 (64%) had 8 or fewer named storms
…Average: 8.5 named storms; 5.2 hurricanes; 2.1 major hurricanes
…Most: 14 named storms; 11 hurricanes; 8 major hurricanes
…Least: 4 named storms; 3 hurricanes; 1 major hurricane
Month in which the last named storm formed:
September: 1
October: 8
November: 1
December: 1
Earliest: September 26
Latest: December 12
Landfalling Major U.S. Hurricanes:
Most major hurricanes making landfall: 3, 1954 (1 Category 4; 2 Category 3) and 1955 (3 Category 3)
Years with Category 5 Hurricanes making landfall:
1969 and 1992
Years with Category 4 Hurricanes making landfall:
1954, 1957, 1960, 1961, and 1989
Years with Category 3 Hurricanes making landfall:
1950, 1954, 1955, 1959, 1964, 1965, 1967, 1970, 1974, 1975, 1979, 1980, 1983, 1985, 1993, 1995, 1996, and 1999
Number of seasons with major U.S. landfalling hurricanes (1950-2003): 30/54 (55.6%)
Number of seasons without major U.S. landfalling hurricanes (1950-2003): 24/54 (44.4%)
Statistical Abstract: Atlantic Hurricane Seasons
Moderator: S2k Moderators
Forum rules
The posts in this forum are NOT official forecasts and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or STORM2K. For official information, please refer to products from the National Hurricane Center and National Weather Service.
-
- S2K Analyst
- Posts: 2718
- Joined: Mon Sep 15, 2003 8:49 pm
- Location: New York
Statistical Abstract: Atlantic Hurricane Seasons
Last edited by donsutherland1 on Sat Aug 14, 2004 8:00 am, edited 5 times in total.
0 likes
-
- S2K Analyst
- Posts: 2718
- Joined: Mon Sep 15, 2003 8:49 pm
- Location: New York
Who is online
Users browsing this forum: Ulf and 42 guests