There is no way of knowing for sure, but NOAA estimates there will be 6-10 Atlantic hurricanes in 2011. However, these predictions are not very accurate.
The most recent hurricane of the 2011 season is Hurricane Katia. This storm is in fact still active. Two other storms are active in the Atlantic: Tropical Storms Maria and Nate. Nate is expected to become a hurricane soon.
The tenth named storm of the 2011 season was Tropical Storm Jose.
Neither. Hurricane names proceed in alphabetical order and Irene is 9th on the list. However, Irene was the first Atlantic storm of 2011 to become a hurricane. The first eight named systems of that season were only tropical storms.
Names for tropical storms and hurricanes are selected an alphabetical list. Irene was the ninth Atlantic tropical storm to form in 2011 and Irene was the ninth name on the list.
The 2011 hurricane season officially begins on June 1 2011.
The last hurricane in 2011's official hurricane season (which ended on November 30), was Hurricane Rina, which lasted between October 23 and October 28, 2011. However, there has been a tropical storm, Sean, that brewed up in early November (November 3-8, 2011), but it dissipated before it became a hurricane. However, just because the official hurricane season is over doesn't mean you should stop looking. There have actually been a handful of storms that have formed in December. Two storms, one having become a Category 1 Hurricane back in 1954-1955, have even spanned two calendar years, brewing in the last few days of December and dissipating in the first few days of January.
The first 3 tropical storms of 2011 will be Arlene, Bret, and Cindy. However, there is no way of know if all or any of them will reach hurricane strength.
No storm has entered Missouri while designated at hurricane strength. According to an internet search, between 1900 and 2011, Missouri was hit by the remnants of 44 hurricanes or tropical storms. Of those 44, only six were at tropical storm strength when they entered Missouri.
Following the naming convention for tropical storms, the next storm name after Don in the Atlantic hurricane season would be Emily. The names are chosen from a predetermined list, and they follow an alphabetical order. In 2011, the next name on the list after Don was indeed Emily.
Hurricanes in tropical storms are given names from a preselected alphabetical list. Every time a new system becomes a tropical storm it is given the next name on the list. The hurricane we now call Irma was the ninth storm of 2017 to become a hurricane, so it was given the ninth name of the list: Irma. Names are re-used on a six year rotation unless a storm is particularly bad, in which case the name is retired from reuse. Irma was used for the first time in 2017 after the name Irene was retired following the 2011 hurricane season.
For the 2011 Atlantic hurricane season the name beginning with B will be Bret.
The name of a hurricane is retired if it is especially deadly or damaging, and Hurricane Dennis was a very damaging hurricane. So now no new storms will be named Dennis (normally names are re-used every six years). So, instead of Dennis the 4th storm of the 2011 hurricane season was named Don.