Hurricane names: Why is it named Hurricane Irene?
Hurricane names say more about that hurricane and hurricane season than you might think.
Hurricane names can't tell you how strong a storm will be, but they can hint at it. Hurricanes in September have a record of being strongest and a hurricane's name can tell you how many there have already been in the season. Here, Hurricane Irene passes to the east of Nassau on New Providence Island in the Bahamas, Thursday.
Lynne Sladky/AP
New York
With hundreds of storm-tracking stations trying to relay information as quickly as possible, scientists need a short, easy to understand naming convention for hurricanes.
Before 1950, hurricanes didn't have names. The more memorable ones were simply described, such as the "1935 Labor Day hurricane" and the "1821 Norfolk and Long Island hurricane."
Starting in 1950, hurricanes began getting names but for the first three years the same names repeated each year, which became confusing.
From 1953 until 1979, it was customary to use only female names, supposedly after girlfriends and wives of Army and Navy meteorologists.
The system we have today began in 1979, and runs alphabetically through male and female names starting with a name beginning with the letter A, such as Arlene.
Each year the names are different from the last until the six-year cycle restarts. In 2011, the following names have been allocated:
Arlene, Bret, Cindy, Don, Emily, Franklin, Gert, Harvey, Irene, Jose, Katia, Lee, Maria, Nate, Ophelia, Philippe, Rina, Sean, Tammy, Vince, Whitney
Next year the names will begin with Alberto, Beryl, Chris, and so on.
The last time Irene was used was in 2005 - the same year Hurricane Katrina hit the Gulf Coast.
Like 74 other Atlantic hurricanes, Katrina's name has been permanently retired to reduce confusion and show respect for those who lost their lives in the hurricane. All hurricanes that result in extraordinary loss of life have their names retired, and are replaced by another name beginning with the same letter. The name Katrina was replaced with Katia, which will be the name assigned to the eleventh hurricane in the 2011 season.
Irene 2005 never came ashore and only reached Category 2. This year, Hurricane Irene is expected to reach Category 4 by the time it comes ashore.