Late-starting hurricane seasons
Late-starting hurricane seasons--ones where the first named storm of the year doesn't occur until August--have happened in eleven of the fifty years between 1960 - 2009 (a 22% occurrence.) Only two of these eleven seasons ended up with more hurricanes than average (seven or greater). The record for the latest starting hurricane season since 1851 was set in 1914, when the only storm of the season formed on September 15. The year 1941 was also late starting, with the season's first storm arriving on September 11. Of course, we didn't have satellites back then, so it's a good bet there were storms earlier in these seasons that got missed. However, there's a good possibility that 1914 really did have only one storm. A re-analysis of the hurricane activity in the decade 1911-1920 (Landsea et al., 2008) found 1.3 missing tropical cyclones per year, thanks to the inclusion of a new database of ship weather reports called COADS. However, 1914 was not one of those years. Various authors have estimated that we missed an average of between one and three tropical cyclones per year during that time period, so it is quite possible 1914 had only one storm.

Figure 1. The hurricane season of 1914 featured only one tropical storm, and was the latest-starting hurricane season on record (September 15).
The latest dates for the first named storm of the season in the recent past, followed by the number of named storms, hurricanes, and intense hurricanes that year are:
2009 (August 15) 9,3,2
2004 (August 1) 15,9,6
2000 (August 4) 15,8,3
1988 (August 7) 12,6,3
1987 (August 9) 7,3,1
1984 (August 18) 13,5,1
1983 (August 15) 4,2,1
1977 (August 30) 6,5,1
1967 (August 30) 8,6,2
1963 (August 2) 9,6,2
1962 (August 22) 5,3,1
We can also add 1992 to the list if we ignore the unnamed subtropical storm that formed in April of that year. That year had the notorious Hurricane Andrew as its first named storm. Andrew formed on August 17 of that year, and was the only major hurricane in a year that had only seven named storms and four hurricanes. For comparison, an average Atlantic hurricane season has 10 named storms, 6 hurricanes, and 2 intense hurricanes. So, it is a good bet that 2009 will be a below-average season.
References
Landsea, C. W. , D. A. Glenn, W. Bredemeyer, M. Chenoweth, R. Ellis J. Gamache, L. Hufstetler, C. Mock, R. Perez, R. Prieto, J. Sanchez-Sesma, D. Thomas, and L. Woolcock, 2008, A Reanalysis of the 1911-20 Atlantic Hurricane Database", Journal of Climate, 21, p.2138-2168.
Jeff Masters
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We're getting Ana, and the longer we wait the stronger Ana will be. I don't see how this will be a below average season, the El Nino is weaker than in 2006 and the conditions are more favorable. Plus, it only takes one.
This sound familiar OZ?
you would have said the exact same thing for 2004... or 2000.. or whatever late starting atlantic season that was quite active in the end. june and july are nothing compared to august and september, even october. you have a chance of being right, but a bigger chance of being wrong.
Conventional wisdom says that there will be some sort of outbreak of tropical activity in August/Sept/Oct. How could there not be? It's unheard of for nothing to happen during those months.
We all know about conventional wisdom, however. It is going to be VERY interesting to watch the rest of the season play out. It's interesting to note that some of the slowest seasons have been some of the worst in terms of landfalling hurricanes. What about 1992? That was the year of Andrew, which I believe formed on August 16th. I didn't see it included in that list but maybe I am missing something?
HJ
Yes, also notice that in 4 of the last 5 late-start years, we ended up with >10 named storms.
probably, the longer this energy is stored up in the tropics the more of an explosion its gonna make when it is released. just like earthquakes and volcanoes
also notice in the link i posted that the two major forcasts they show are 9-14 and 12. thats a lot compared to how much the UKMET is forcasting (6)
There was an unnamed subtropical storm in April of 1992.
I'm at work and that link is blocked for me :(
Yeah...I was wondering the same thing...Dr. Masters?? Anyone...Anyone...Bueller? Bueller?
HJ
I think that CSU will update theirs and go like 9 storms or something. NOAA is supposed to update theirs 8/6.
Maybe Something brewing in the ATL/Global Tropics...need to be awaken...maybe
Huh? 1914 only had 1 storm. Why is that a big deal? Now if you were to say that about the 2005 season I'd understand your sentiment.
HJ
Can someone please look into their Crystal Ball-ster for WS/JFV? I only have one of those eight ball things and they don't work well for weather.
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