Dr. Jeff Masters' WunderBlog

PSU Atlantic hurricane season forecast: 16 named storms
Posted by: Dr. Jeff Masters, 03:25 PM GMT die 18o May, anno 2011 +6
Expect a busy Atlantic hurricane season this year, with sixteen named storms, say Pennsylvania State University (PSU) hurricane scientists Michael Mann and Michael Kozar. Their annual Atlantic hurricane season forecast issued on May 16 calls for 12 - 20 named storms this season, which starts June 1 and runs until November 30. An average season has 10 - 11 named storms. Their prediction was made using statistics of how past hurricane seasons have behaved in response to sea surface temperatures (SSTs), the El Niño/La Niña oscillation, the North Atlantic Oscillation (NAO), and other factors. This year's forecast is primarily based on three factors:

1) The current above-average sea surface temperatures in the Atlantic Main Development Region (MDR) for hurricanes, from Central America to the coast of Africa between 10°C and 20°C North latitude, will continue into the main part of hurricane season;
2) The fading La Niña event in the Eastern Pacific Ocean will be replaced by neutral El Niño/La Niña conditions;
3) The North Atlantic Oscillation (NAO) will be near average during hurricane season.


Figure 1. Hurricane Igor of 2010 as seen from the International Space Station.

The PSU team will also be making a new experimental forecast based not on the absolute MDR sea surface temperatures, but on difference between the MDR SST and ocean temperatures over the rest of the globe's tropical oceans. Some research has suggested that Atlantic hurricane activity is greater when this relative difference in SSTs is high, not necessarily when the absolute MDR SST is high (in other words, if all the world's tropical oceans have record high SSTs, we wouldn't get an unusually active Atlantic hurricane season, even with record warm SSTs in the Atlantic.) This new experimental forecast is predicting higher activity: 19 named storms in the Atlantic this year.

The PSU team has been making Atlantic hurricane season forecasts since 2007, and these predictions have done pretty well:

2007 prediction: 15 Actual: 15
2009 prediction: 12.5 Actual: 9
2010 prediction: 23 Actual: 19

NOAA will be issuing their annual pre-season Atlantic hurricane season forecast at 11:30am on Thursday, and I'll make a post on that Thursday afternoon. Tropical Storm Risk, Inc. (TSR) issues their pre-season forecast on May 24, and Colorado State University issues theirs on June 1.

My next post on the Mississippi flood will be on Friday.

Links:

PSU 2011 Atlantic hurricane season forecast issued on May 16.

Jeff Masters
Categories: Hurricane
  Permalink | A A A
Reader Comments
Display: 0, 50, 100, 200 Sort: Newest First - Order Posted
Viewing: 201 - 251

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15Blog Index

201. DopplarDee 07:26 PM GMT die 18o May, anno 2011    
U guys r killin me!!! ... this is more amusing than tv any day of the week :))
Member Since: July 24, 2006 Posts: 22 Comments: 103
202. Levi32 07:26 PM GMT die 18o May, anno 2011    
The first tropical wave of the season is now advancing into Guyana, and will likely bring showers/thunderstorms to Trinidad and Tobago tomorrow.

Member Since: November 24, 2005 Posts: 593 Comments: 25604
203. sunlinepr 07:28 PM GMT die 18o May, anno 2011    





Member Since: August 2, 2010 Posts: 19 Comments: 8466
204. Patrap 07:29 PM GMT die 18o May, anno 2011    
31 years ago today,,was a BIG BADA BOOM!!

Member Since: July 3, 2005 Posts: 377 Comments: 112968
205. KeysieLife 07:29 PM GMT die 18o May, anno 2011    
Quoting presslord:
Proof?!?!?! You want proof?!?!?!?! Here's your proof!!!!!!!!!!
Link


I say meteor...two reasons, one explanation.

Reason 1: No one "heard" anything because it sounded like a gun shot...too normal of a sound so no one paid attention.

Reason 2: No one "found" anything because there was a cool rock laying there and it was stolen immediately to sell for another cool "rock"

Explanation: IT'S NEW YORK!
Member Since: September 10, 2010 Posts: 2 Comments: 380
206. Patrap 07:30 PM GMT die 18o May, anno 2011    
Thank you developers for da Minus button.

LoL

..for when a link wont do
Member Since: July 3, 2005 Posts: 377 Comments: 112968
207. jeffs713 07:31 PM GMT die 18o May, anno 2011    
203. Is there a short form of that? Or a Reader's Digest version?
Member Since: August 3, 2008 Posts: 15 Comments: 5729
210. PrivateIdaho 07:32 PM GMT die 18o May, anno 2011    
Member Since: August 29, 2010 Posts: 0 Comments: 5211
211. PrivateIdaho 07:34 PM GMT die 18o May, anno 2011    
Quoting DopplarDee:
U guys r killin me!!! ... this is more amusing than tv any day of the week :))
...not sure that's a complement.
Member Since: August 29, 2010 Posts: 0 Comments: 5211
212. DopplarDee 07:35 PM GMT die 18o May, anno 2011    
lol it is ... I love it all
Member Since: July 24, 2006 Posts: 22 Comments: 103
213. jeffs713 07:36 PM GMT die 18o May, anno 2011    
Quoting PrivateIdaho:
Somewhere, ancient Mesoamericans are getting one heck of a laugh...
Member Since: August 3, 2008 Posts: 15 Comments: 5729
214. HurricaneDean07 07:36 PM GMT die 18o May, anno 2011    
im leaving before this doomsday fest chugs down the track with the crazy train, and the pshyco clown that follows.
Member Since: October 3, 2010 Posts: 40 Comments: 4129
215. HurricaneDean07 07:38 PM GMT die 18o May, anno 2011    
Quoting Levi32:
The first tropical wave of the season is now advancing into Guyana, and will likely bring showers/thunderstorms to Trinidad and Tobago tomorrow.

the wave is looking nice, isn't it levi
Member Since: October 3, 2010 Posts: 40 Comments: 4129
216. DopplarDee 07:40 PM GMT die 18o May, anno 2011    
Ive always loved things that fall from the sky ...rain, snow, ... but I hadnt concidered all this
Member Since: July 24, 2006 Posts: 22 Comments: 103
217. VAbeachhurricanes 07:40 PM GMT die 18o May, anno 2011    
Friday is going to be the best, I can tell its going to be hella fun in here.
Member Since: September 6, 2007 Posts: 0 Comments: 4878
218. Patrap 07:40 PM GMT die 18o May, anno 2011    
Member Since: July 3, 2005 Posts: 377 Comments: 112968
219. Neapolitan 07:41 PM GMT die 18o May, anno 2011    
Quoting presslord:
Proof?!?!?! You want proof?!?!?!?! Here's your proof!!!!!!!!!!
Link

Ha!

(Okay, the buzzkill: I work with a meteorite group that sent some experts to the house two days after the incident, and they immediately ruled out any possible meteorite strike. FWIW, they've decided on two possibilities: a) pranksters either set off a small buried charge [black powder would do the damage with a relatively small bang], or tied a stout rope to a small tree/large bush planted at the site and drove quickly away [and roots in and around the hole agree with this]; b) there was a natural or man-made buildup of some sort of gas followed by an ignition. There's no fracking anywhere nearby, so dirt from the "crater" is being analyzed for trace elements. I go with A. If you live near there and want to check it out yourself, WU-mail for the address.)
Member Since: November 8, 2009 Posts: 4 Comments: 11302
220. PrivateIdaho 07:42 PM GMT die 18o May, anno 2011    

Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
But if it had to perish twice,
I think I know enough of hate
To say that for destruction ice
Is also great
And would suffice.

Robert Frost





Member Since: August 29, 2010 Posts: 0 Comments: 5211
222. presslord 07:44 PM GMT die 18o May, anno 2011    
Quoting Neapolitan:

Ha!

(Okay, the buzzkill: I work with a meteorite group that sent some experts to the house two days after the incident, and they immediately ruled out any possible meteorite strike. FWIW, they've decided on two possibilities: a) pranksters either set off a small buried charge [black powder would do the damage with a relatively small bang], or tied a stout rope to a small tree/large bush planted at the site and drove quickly away [and roots in and around the hole agree with this]; b) there was a natural or man-made buildup of some sort of gas followed by an ignition. There's no fracking anywhere nearby, so dirt from the "crater" is being analyzed for trace elements. I go with A. If you live near there and want to check it out yourself, WU-mail for the address.)


you. are.no.fun.at.all.
Member Since: August 13, 2007 Posts: 0 Comments: 10405
225. Patrap 07:48 PM GMT die 18o May, anno 2011    
I beg yer pardon ?
Member Since: July 3, 2005 Posts: 377 Comments: 112968
227. presslord 07:50 PM GMT die 18o May, anno 2011    
Quoting Neapolitan:

Ha!

(Okay, the buzzkill: I work with a meteorite group that sent some experts to the house two days after the incident, and they immediately ruled out any possible meteorite strike. FWIW, they've decided on two possibilities: a) pranksters either set off a small buried charge [black powder would do the damage with a relatively small bang], or tied a stout rope to a small tree/large bush planted at the site and drove quickly away [and roots in and around the hole agree with this]; b) there was a natural or man-made buildup of some sort of gas followed by an ignition. There's no fracking anywhere nearby, so dirt from the "crater" is being analyzed for trace elements. I go with A. If you live near there and want to check it out yourself, WU-mail for the address.)


I'll bet you're one o' those 'Climate Change' cultists, too...
Member Since: August 13, 2007 Posts: 0 Comments: 10405
229. sunlinepr 07:52 PM GMT die 18o May, anno 2011    
Another round of rain for PR

Member Since: August 2, 2010 Posts: 19 Comments: 8466
231. Patrap 07:53 PM GMT die 18o May, anno 2011    
enjoy your "Vacation"
Member Since: July 3, 2005 Posts: 377 Comments: 112968
233. aquak9 07:55 PM GMT die 18o May, anno 2011    
Hasta la Vista for
Rasta la Stevah!
Member Since: August 13, 2005 Posts: 163 Comments: 25036
234. DopplarDee 07:55 PM GMT die 18o May, anno 2011    
Ya'll have fun with that .... Im out c u later
Member Since: July 24, 2006 Posts: 22 Comments: 103
235. jeffs713 08:00 PM GMT die 18o May, anno 2011    
See this line here?

Most of the blog is on this side.
---------------------------
But you stepped over it, and are now alone on this side.
Enjoy your time off...
Member Since: August 3, 2008 Posts: 15 Comments: 5729
239. Tropicsweatherpr 08:02 PM GMT die 18o May, anno 2011    
Quoting sunlinepr:
Another round of rain for PR



Otra vez cayo granizo,ahora fue en Morovis.

Again,hail fell in Puerto Rico,this time in a town called Morovis.

Link
Member Since: April 29, 2009 Posts: 67 Comments: 8763
240. PrivateIdaho 08:02 PM GMT die 18o May, anno 2011    
Quoting jeffs713:
See this line here?

Most of the blog is on this side.
---------------------------
But you stepped over it, and are now alone on this side.
Enjoy your time off...
from R. Frost to that...a rapid trip to the gutter.
Member Since: August 29, 2010 Posts: 0 Comments: 5211
241. jeffs713 08:03 PM GMT die 18o May, anno 2011    
Well, about an hour ago, it was a fun, freewheeling conversation that was quite humorous. But as usually happens, people got caught up in the moment, pushed the boundaries, and stepped over a line.

Now its a buzzkill (and back to work).
Member Since: August 3, 2008 Posts: 15 Comments: 5729
244. sunlinepr 08:04 PM GMT die 18o May, anno 2011    
This can improve Weather satellite technology...

Invisibility Cloak: Scientists Achieve Optical Invisibility in Visible Light Range of Spectrum

ScienceDaily (May 18, 2011) — "Seeing something invisible with your own eyes is an exciting experience," say Joachim Fischer and Tolga Ergin. For about one year, both physicists and members of the team of Professor Martin Wegener at KIT's Center for Functional Nanostructures (CFN) have worked on refining the structure of the Karlsruhe invisibility cloak to such an extent that it is also effective in the visible spectral range.

"The invisibility cloak now developed is an attractive object demonstrating the fantastic possibilities of the rather new field of transformation optics and metamaterials. The design options that opened up during the last years had not been deemed possible before," emphasizes Ergin. "We expect dramatic improvements of light-based technologies, such as lenses, solar cells, microscopes, objectives, chip production, and data communication."

Link
Member Since: August 2, 2010 Posts: 19 Comments: 8466
246. TropicalAnalystwx13 08:05 PM GMT die 18o May, anno 2011    
OK....in an attempt to get the blog back on track...Our first TW is looking rather spirally.

Member Since: July 6, 2010 Posts: 92 Comments: 25956
249. RitaEvac 08:07 PM GMT die 18o May, anno 2011    
Quoting sunlinepr:
This can improve Weather satellite technology...

Invisibility Cloak: Scientists Achieve Optical Invisibility in Visible Light Range of Spectrum

ScienceDaily (May 18, 2011) — "Seeing something invisible with your own eyes is an exciting experience," say Joachim Fischer and Tolga Ergin. For about one year, both physicists and members of the team of Professor Martin Wegener at KIT's Center for Functional Nanostructures (CFN) have worked on refining the structure of the Karlsruhe invisibility cloak to such an extent that it is also effective in the visible spectral range.

"The invisibility cloak now developed is an attractive object demonstrating the fantastic possibilities of the rather new field of transformation optics and metamaterials. The design options that opened up during the last years had not been deemed possible before," emphasizes Ergin. "We expect dramatic improvements of light-based technologies, such as lenses, solar cells, microscopes, objectives, chip production, and data communication."

Link


This will help with Ghost Adventurers, Zak will have a field day chasing spirits and taunting them like hell.
Member Since: July 14, 2008 Posts: 1 Comments: 8953
250. jeffs713 08:07 PM GMT die 18o May, anno 2011    
Quoting RitaEvac:


This will help with Ghost Adventurers, Zak will have a field day chasing spirits and taunting them like hell.

LOL
Member Since: August 3, 2008 Posts: 15 Comments: 5729

Viewing: 201 - 251

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15Blog Index

New Comment
Community Standards Policy Comments will take a few seconds to appear.
Post Your Comments
Please sign in to post comments.
Not only will you be able to leave comments on this blog, but you'll also have the ability to upload and share your photos in our Wunder Photos section.
About JeffMasters
Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

Community Activity