Expert forecasts for 2013 N Atlantic season

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Re: Expert forecasts for 2013 N Atlantic season (See 1rst post)

#81 Postby wxman57 » Sun Mar 31, 2013 7:53 pm

HURRICANELONNY wrote:I have to put my 2 cents in. As most of us know the pro's failed miserably in 2012. The factors change so fast it's hard to get a grip on what's happening in the tropics pertaining to Hurricane season. For sure and most models showed El Nino forming last year and it didn't. I don't know if El nino will form this year or if shear or SAL will have an influence. I guess any guess is good this early. :eek:


I would disagree with that assessment. True, there were more named storms than expected, but at least 3-4 of those were very short-lived out in the open Atlantic. In my outlook, I said that the MDR looked unfavorable for development in 2012, and that the eastern Caribbean would probably be spared any significant impact because of that. That prediction was quite good. Others predicted similarly unfavorable conditions in the MDR. I also discussed the analog years and stressed that in most of them a hurricane passed through the Florida Straits and struck the mid Gulf coast - something I said to watch out for in 2012. Isaac was a good verification of that. Now I certainly didn't expect 8 hurricanes to form in the subtropics, and one (Chris) north of 40N. I think that was the real surprise in 2012. Otherwise, the season behaved quite as expected.

There were only 2 major hurricanes in 2012, and both were just barely Cat 3s (just as predicted). I had predicted that the tropics would be generally unfavorable for strengthening due to increased low-level shear, dust, and a general lack of instability (at least in the deep tropics). I think that it was the general unfavorable conditions aloft that led to two large, disorganized hurricanes to impact the U.S. - Isaac and Sandy. Neither could get its act together before landfall, though Sandy started to organize before it hit Cuba.
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Re: Expert forecasts for 2013 N Atlantic season (See 1rst post)

#82 Postby Blown Away » Mon Apr 01, 2013 8:15 am

Personally I really respect JB and likely I'm reading to much into this. JB loves the NE hurricane and IMO his tone suggests more NE CONUS action when the meat of his ACE graphic suggests FL and EGOM?
http://www.weatherbell.com/2013-Hurrica ... n-Forecast
Last edited by Blown Away on Wed Apr 03, 2013 7:04 am, edited 1 time in total.
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Re: Expert forecasts for 2013 N Atlantic season (See 1rst post)

#83 Postby Hurricaneman » Mon Apr 01, 2013 4:37 pm

Blown Away wrote:Personally I really respect JB and likely I'm reading to much into this. JB loves the NE hurricane and IMO his tone suggests more NE CONUS action when the meat of his graphic suggests FL and EGOM?
JB Video: http://www.weatherbell.com/saturday-sum ... ch-30-2013
http://img20.imageshack.us/img20/4526/jbpredictions.jpg


The analogs he uses fit more to the graphic than to his thoughts which is quite confusing and can confuse the public
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Re: Expert forecasts for 2013 N Atlantic season (See 1rst post)

#84 Postby MGC » Mon Apr 01, 2013 6:42 pm

JB is just trying to drum up some more traffic on his site....scare the folks in the NY area after Sandy. That and all the climate change manure people are getting fed is causing a lot of hurricane anxiety. Everyone here on the Mississippi Coast was worried about the forecasts for the 2006 season after just going through Katrina....turns out 2006 was a big bust for most hurricane forecasts. Lets hope 2013 is not busy......MGC
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Re: Expert forecasts for 2013 N Atlantic season (See 1rst post)

#85 Postby Blown Away » Wed Apr 03, 2013 6:56 am

Image
JB Video: http://www.weatherbell.com/saturday-sum ... ch-30-2013
JB Summary: http://www.weatherbell.com/2013-Hurrica ... n-Forecast

Map of the analog years JB uses, in his video he compares the current condition to the 1950's, but doesn't use a 1950's analog year? Not bashing at all and I really enjoy reading/listening to his predictions, just get confused when he talks 1950's and NE CONUS impacts and his analog years say something different?? Wow, if his ideas about the 2013 season are close, it's gonna be a bad year.

1950's Map:
Image

1950's, many fishies in the basin!
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#86 Postby TheStormExpert » Wed Apr 03, 2013 12:34 pm

JB's analog years show quite a few major hurricanes hitting s. florida! It doesn't surprise me all that much as it could if florida didn't have a 7 year hurricane-free streak going on. :eek:
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Re: Expert forecasts for 2013 N Atlantic season (See 1rst post)

#87 Postby MGC » Wed Apr 03, 2013 6:51 pm

By the look of that chart, I'd say JB just about has the entire basin covered....hard for a forecast to not verify......MGC
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Re: Expert forecasts for 2013 N Atlantic season (See 1rst post)

#88 Postby TropicalAnalystwx13 » Wed Apr 03, 2013 8:54 pm

MGC wrote:By the look of that chart, I'd say JB just about has the entire basin covered....hard for a forecast to not verify......MGC

That's the point. With a setup like this years, everybody is at risk. There's an elevated hurricane threat to the East Coast though.
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Re: Expert forecasts for 2013 N Atlantic season (See 1rst post)

#89 Postby Blown Away » Thu Apr 04, 2013 9:43 am

Thanks for your email and for considering our WeatherBell Premium Service.
From the opening line of the hurricane discussion: A wild season is on the way, and the "major hit drought" on the US coast should end. In fact, multiple major hits are likely this year with the cold PDO, warm AMO decadalsignal favoring the East Coast, as in the 1950s. Here is the answer: The decadol signal for hits favors the east coast. Because of much more sophisticated ways of seeing storms, we have much higher ACE indices and storm totals from more recent years. However, the total ACE is based on the closest analog years, and those 5 were. The decadol signal is leads to more worry about the east coast, the 400/sst connection deep tropics ACE. In recent years, it has been a strong correlation for the total ace, nut the opening line of the forecast and the chart go right to the 1950s for the landfall signal. I use the other for the total ACE.

Hope this helps.

The WeatherBell Analytics Team
-------------------------------------------------------------------------------------------
Date: Wednesday, April 3, 2013 3:34 PM
To: <subscriptions@weatherbell.com>
Subject: WeatherBell Analytics Contact FormMessage:

Enjoy Joe's hurricane predictions and weather video's and considering a subscription. Confused why Joe refers to current conditions being similar to the 1950's and no 1950's years were used in his analog years?? Thanks…
Date Of Submission: April 3, 2013, 3:34 pm


See my question to Weatherbell and their quick response. Appreciate their follow up!!
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Re: Expert forecasts for 2013 Atl season: (TSR up at 1rst post)

#90 Postby cycloneye » Fri Apr 05, 2013 5:33 am

Tropical Storm Risk (TSR) April forecast is up at first post.

Here is the summary by TSR.

TSR continues to predict an active Atlantic hurricane season in 2013. Based on current and projected climate signals, Atlantic basin tropical cyclone activity in 2013 is forecast to be about 30% above the long-term (1950-2012) norm but slightly below the recent 2003-2012 10-year norm. There is a 57% likelihood that activity will be in the top one-third of years historically.

For Atlantic basin hurricane activity referenced to long-term norm values, TSR forecasts:
•15 tropical storms including eight hurricanes and three intense hurricanes. This compares to long-term norms of 11, six and three respectively.
•An ACE (Accumulated Cyclone Energy) value of 131. The long-term norm is 103.

The key factors behind the TSR forecast for an above-norm hurricane season in 2013 are the anticipated persistence through summer 2013 of warmer-than-normal sea surface temperatures in the tropical North Atlantic, and an expectation of neutral or weak negative ENSO conditions in the tropical Pacific Ocean. These factors would help to energise and sustain more storms.

Users should be aware that the precision of TSR's April outlooks for upcoming Atlantic hurricane activity between 1980 and 2012 is low.
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Re: Expert forecasts for 2013 Atl season: (TSR up at 1rst post)

#91 Postby OuterBanker » Fri Apr 05, 2013 6:51 am

JB's longhand forecast. Legal link.

http://www.weatherbell.com/2013-Hurrica ... n-Forecast

Draw your own conclusion.
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Re: Expert forecasts for 2013 Atl season: (TSR up at 1rst post)

#92 Postby OuterBanker » Fri Apr 05, 2013 7:06 am

cycloneye wrote:Tropical Storm Risk (TSR) April forecast is up at first post.


Interesting, ever so slightly less than their Dec forecast. The only one so far. They are also not as drastic as the other forecasters.
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Re: Expert forecasts for 2013 Atl season: (TSR up at 1rst post)

#93 Postby cycloneye » Fri Apr 05, 2013 7:54 am

OuterBanker wrote:
cycloneye wrote:Tropical Storm Risk (TSR) April forecast is up at first post.


Interesting, ever so slightly less than their Dec forecast. The only one so far. They are also not as drastic as the other forecasters.

It will be interesting to see if CSU goes like TSR or are a little bit higher. They will be up on the 10th.
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Re: Expert forecasts for 2013 N Atlantic season ( See 1rst post)

#94 Postby cycloneye » Sat Apr 06, 2013 1:01 pm

Here is what Crown Weather has in terms of % of landfalls in the North Atlantic for 2013. Click the images to see in a closeup the probabilities. I am at 25% but that doesn't mean PR will be spared this season. Preparations for the season always have to go ahead and my family does it every year no matter what transpires.

https://www.facebook.com/media/set/?set ... 871&type=1
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Re: Expert forecasts for 2013 N Atlantic season ( See 1rst post)

#95 Postby Javlin » Sat Apr 06, 2013 1:56 pm

Luis Crown's map kinda fits my thinking since Nov of last year with it being alittle colder this season and much more rain like winter of 04/05.The next tidbit was the fact we may trend neutral come the heart of the season again like some years the GOM has been active.It seems we will have to see if the highs set the NGOM in the slot for a porption of the season.
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Re: Expert forecasts for 2013 N Atlantic season ( See 1rst post)

#96 Postby OuterBanker » Sat Apr 06, 2013 3:10 pm

Luis, Bre and I would gladly trade our 80%+ for your 25%.

Geeze Louise that's a scary prognostication.

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Re: Expert forecasts for 2013 N Atlantic season ( See 1rst post)

#97 Postby cycloneye » Sun Apr 07, 2013 3:37 pm

OuterBanker wrote:Luis, Bre and I would gladly trade our 80%+ for your 25%.

Geeze Louise that's a scary prognostication.

https://www.facebook.com/media/set/?set ... 871&type=1


Well,I would want both areas and the rest to be at 0%. :) I am super optimistic right?

Next expert forecast with numbers for the first time for the 2013 North Atlantic season from Dr's Klotzbach / Gray of Colorado State University will be up on the 10th of April.
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Re: Expert forecasts (See 1rst post) (Next up CSU on 10th)

#98 Postby Riptide » Sun Apr 07, 2013 4:29 pm

2005 esque predictions but with more emphasis on eastern tracks seems to be the trend.
Makes sense considering the persistently negative NAO and displaced subtropical high, unable to keep storms in the tropics.
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Re: Expert forecasts (See 1rst post) (Next up CSU on the 10th)

#99 Postby SFLcane » Mon Apr 08, 2013 8:56 am

TWC 2013 Atlantic Hurricane Season Outlook: Active Season Ahead

16/9/5

http://www.weather.com/news/weather-hurricanes/hurricane-season-outlook-april-20130408
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Re: Expert forecasts (See 1rst post) (Next up CSU on the 10th)

#100 Postby cycloneye » Mon Apr 08, 2013 9:17 am

TWC has been added to the first post list.
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