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Related: Editorials & Other Articles, Issue Forums, Alliance Forums, Region ForumsAs we approack the Atlantic Hurricane peak season here's Jeff Masters must read
http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=2484<snip>
As we stand on the cusp of the peak part of hurricane season, all of the major groups that perform long-range seasonal hurricane forecasts are still calling for an active 2013 Atlantic hurricane season. NOAA forecasts an above-normal and possibly very active Atlantic hurricane season in 2013, in their August 8 outlook. They give a 70% chance of an above-normal season, a 25% chance of an near-normal season, and 5% chance of a below-normal season. They predict a 70% chance that there will be 13 - 19 named storms, 6 - 9 hurricanes, and 3 - 5 major hurricanes, with an Accumulated Cyclone Energy (ACE) 120% - 190% of the median. If we take the midpoint of these numbers, NOAA is calling for 16 named storms, 7.5 hurricanes, 4 major hurricanes, and an ACE index 155% of normal. This is well above the 1981 - 2010 average of 12 named storms, 6 hurricanes, and 3 major hurricanes. Hurricane seasons during the active hurricane period 1995 - 2012 have averaged 15 named storms, 8 hurricanes, and 4 major hurricanes, with an ACE index 151% of the median.
Figure 1. Tropical Storm Dorian on July 25, 2013, when the storm reached peak intensity--sustained winds of 60 mph. Formation of early-season tropical storms like Chantal and Dorian in June and July in the deep tropics is usually a harbinger of an active Atlantic hurricane season. Image credit: NASA.
NOAA cites five main reasons to expect an active remainder of hurricane season:
1) Sea Surface Temperatures (SSTs) are above average in the Main Development Region (MDR) for hurricanes, from the coast of Africa to the Caribbean. As of August 9, SST were 0.4°C (0.8°F) above average.
2) Trade winds are weaker than average across the MDR, which has caused the African Monsoon to grow wetter and stronger, the amount of spin over the MDR to increase, and the amount of vertical wind shear to decrease.
3) No El Niño event is present or expected this fall.
4) There have been two early-season tropical storms in the deep tropics (Tropical Storms Chantal and Dorian), which is generally a harbinger of an above-normal season.
5) We are in an active hurricane period that began in 1995.
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As we approack the Atlantic Hurricane peak season here's Jeff Masters must read (Original Post)
malaise
Aug 2013
OP
Cooley Hurd
(26,877 posts)1. If another slams into the Northeast, then I would say...
...something is DEFINITELY amiss. That would be 3 in three years. One's (Irene) a fluke. Two (Sandy) is even flukier. But THREE??
1-Old-Man
(2,667 posts)2. As the boys used to say, 'its gonna come a blow'.
Mojorabbit
(16,020 posts)3. K and R nt