Dr. Jeff Masters' WunderBlog

Hurricane Felicia hits Category 3; may affect Hawaii next week
Posted by: Dr. Jeff Masters, 02:45 PM GMT del 05 Agosto 2009 +4
As is often the case in an El Niño year, there's nothing to talk about today in the Atlantic, but the Eastern Pacific is very active. It has been 17 years since we went this long without a tropical cyclone in the Atlantic--the hurricane season of 1992 didn't start until August 16--but in the Eastern Pacific, we've already had six named storms this year. Hurricane Felicia is the latest addition, and Felicia has put on an impressive burst of intensification this morning by powering up to Category 3 status with 115 mph winds. Recent satellite loops show that Felicia has continued to intensify, with the cloud tops surrounding the eye cooling as they push higher into the troposphere.


Figure 1. Current satellite image of Hurricane Felicia.

While Felicia is an impressive hurricane now, its days of glory will be short-lived. Felicia is currently passing over a region of warm sea surface temperatures (SSTs) of 28.5°C, a full 2.5°C above the 26°C threshold needed to sustain a hurricane. These warm waters also extend to great depth, as seen on the Ocean Heat Content image (Figure 2). Felicia's west-northwest track will take the storm into a region of cooler waters with lower Oceanic Heat Content beginning tonight, which should induce a steady weakening trend beginning Thursday night. By Friday morning, SSTs should fall to 26°C, and decline to 25°C by Saturday. While wind shear is expected to remain in the low to moderate range over the next five days, 5 - 15 knots, the cooler SSTs should be able to significantly weaken the hurricane. By Monday, when most of the computer models indicate that Felicia will be nearing the Hawaiian Islands, the storm will be at tropical depression strength with top winds of about 35 mph, according to the latest runs of the HWRF and GFDL models. Exactly how close Felicia will get to the Hawaiian Islands is a bit tricky to call right now, since the hurricane is interacting with nearby Tropical Storm Enrique. Whenever two storms get within 900 miles of each other, they tend to rotate around a common center in a dance called the Fujiwhara Effect. This sort of storm-storm interaction is a complicated affair not well-handled by the computer forecast models.


Figure 2. Total oceanic heat content (also called the Tropical Cyclone Heat Potential, TCHP) along the forecast path of Hurricane Felicia. The initial time of the forecast is 06 UTC (1 am EDT) on August 5, 2009. Oceanic heat content of 90 kJ per square cm is often associated with rapid intensification of hurricanes. Felicia is currently over waters with high heat content, but the heat content will steadily decrease over the next two days. Image credit: NOAA/RAMMB.

There are no areas of disturbed weather in the Atlantic worth mentioning today, and no computer models forecast tropical storm development over the next seven days.

I'll have an update on Thursday.

Jeff Masters
Categories: Hurricane
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901. Patrap 01:16 AM GMT del 06 Agosto 2009    
Felicia 00:30 UTC 6 Aug

Dvorak Image

Member Since: Luglio 3, 2005 Posts: 377 Comments: 112986
903. extreme236 01:16 AM GMT del 06 Agosto 2009    
Quoting Tazmanian:



they been saying that for the past few weeks and have we seen that yet Nop


Difference between then and now is that it is August.
Member Since: Agosto 2, 2007 Posts: 19 Comments: 19234
904. extreme236 01:17 AM GMT del 06 Agosto 2009    
Quoting Tazmanian:



may i have that link too that info


Its in the same link I gave u before. Just click fix.
Member Since: Agosto 2, 2007 Posts: 19 Comments: 19234
905. FLWeatherFreak91 01:17 AM GMT del 06 Agosto 2009    
Wow. My new Macbook pro with 4gb of ram is having trouble loading the blog for some reason... anyone else having a prob?
Member Since: Dicembre 1, 2006 Posts: 2 Comments: 3516
906. hunkerdown 01:19 AM GMT del 06 Agosto 2009    
Quoting extreme236:


Difference between then and now is that it is August.
I am still waiting to see a signifucant change to begin to support the models. I am still a little skeptical of the models until I see a visual environmental change.
Member Since: Agosto 15, 2008 Posts: 0 Comments: 2514
907. CaicosRetiredSailor 01:19 AM GMT del 06 Agosto 2009    
Member Since: Luglio 12, 2007 Posts: 0 Comments: 5256
908. Alockwr21 01:21 AM GMT del 06 Agosto 2009    
What's the latest on the CATL low? Anything?
Member Since: Settembre 12, 2007 Posts: 0 Comments: 724
909. hunkerdown 01:20 AM GMT del 06 Agosto 2009    
Quoting FLWeatherFreak91:
Wow. My new Macbook pro with 4gb of ram is having trouble loading the blog for some reason... anyone else having a prob?
What is it doing ?
Member Since: Agosto 15, 2008 Posts: 0 Comments: 2514
911. Stoopid1 01:20 AM GMT del 06 Agosto 2009    
Latest intensity averages do come out to around 135-140mph on Felicia, which is more than originally expected she would be. That does give her a better chance of making a notable impact on Hawaii, though I still don't think it would be too much.
Member Since: Agosto 6, 2007 Posts: 21 Comments: 2390
912. KEEPEROFTHEGATE (Mod) 01:22 AM GMT del 06 Agosto 2009    
UW - CIMSS
ADVANCED DVORAK TECHNIQUE
ADT-Version 7.2.3
Tropical Cyclone Intensity Algorithm

----- Current Analysis -----
Date : 06 AUG 2009 Time : 003000 UTC
Lat : 14:45:28 N Lon : 130:06:53 W


CI# /Pressure/ Vmax
6.4 / 940.5mb/124.6kt


Final T# Adj T# Raw T#
(3hr avg)
6.4 6.7 6.7

Latitude bias adjustment to MSLP : +2.9mb

Estimated radius of max. wind based on IR : 16 km

Center Temp : +10.2C Cloud Region Temp : -70.2C

Scene Type : EYE

Positioning Method : RING/SPIRAL COMBINATION

Ocean Basin : EAST PACIFIC
Dvorak CI > MSLP Conversion Used : ATLANTIC

Tno/CI Rules : Constraint Limits : NO LIMIT
Weakening Flag : OFF
Rapid Dissipation Flag : OFF

****************************************************

Member Since: Luglio 15, 2006 Posts: 147 Comments: 41332
913. Stoopid1 01:22 AM GMT del 06 Agosto 2009    
Quoting Tazmanian:
when was the last time we had a strong Eastern Pacific cat 4???


Last year, Norbert was a 135mph cat 4, made two landfalls in Mexico.
Member Since: Agosto 6, 2007 Posts: 21 Comments: 2390
914. extreme236 01:22 AM GMT del 06 Agosto 2009    
Quoting Tazmanian:
when was the last time we had a strong Eastern Pacific cat 4???


Norbert of 08
Member Since: Agosto 2, 2007 Posts: 19 Comments: 19234
915. HaboobsRsweet 01:22 AM GMT del 06 Agosto 2009    
WS...you asked me earlier when I stepped out for dinner when I thought the season would start over in the Atlantic. My honest answer is I have no idea but I still need to see a shift in the pattern before I believe any of these waves will survive. I have to see things move and not just see them in the models. I do think we will get something this season as things are more active but when, I have no idea.
Member Since: Maggio 20, 2009 Posts: 0 Comments: 1640
917. SavannahStorm 01:24 AM GMT del 06 Agosto 2009    


Poor Enrique's getting gobbled up like a piece of delicious cake.
Member Since: Settembre 22, 2005 Posts: 18 Comments: 2140
920. 2manytimes 01:30 AM GMT del 06 Agosto 2009    
Good evening to all. My first comments ever on this blog. Just joined today but have been lurking since early last season. I live in the VI and like to stay abreast of what is east of us. I am not a met or anything close to being one. I respect the opinion of many of you guys-the serious ones.
922. Thundercloud01221991 01:30 AM GMT del 06 Agosto 2009    
Member Since: Agosto 1, 2006 Posts: 28 Comments: 3693
923. Elena85Vet 01:31 AM GMT del 06 Agosto 2009    
Quoting FLWeatherFreak91:
Wow. My new Macbook pro with 4gb of ram is having trouble loading the blog for some reason... anyone else having a prob?


Wouldn't happen to be running a version of I.E. would you?
I upgraded to IE8 about a month ago and had issues here and couldn't run the sat. loops on NHC site. I had to uninstall and go back to IE7. Which fixed the problem.
I only run Firefox here now. No problems.
Member Since: Agosto 18, 2008 Posts: 0 Comments: 619
927. stormwatcherCI 01:38 AM GMT del 06 Agosto 2009    
Quoting 2manytimes:
Good evening to all. My first comments ever on this blog. Just joined today but have been lurking since early last season. I live in the VI and like to stay abreast of what is east of us. I am not a met or anything close to being one. I respect the opinion of many of you guys-the serious ones.
There are some very good ones on here and then there are the others
but all in all you should get some understanding on here.
Member Since: Ottobre 9, 2008 Posts: 0 Comments: 8063
928. indianrivguy 01:39 AM GMT del 06 Agosto 2009    
Quoting hunkerdown:
Pretty chilly after Wilme blew through South Florida...drooped in the 50s the afternoon it passed.


Wilma pulled cold air down behind it and gave us clear skies before the sun went down here in Jensen Beach.[puffs out chest] I predicted it.

I have a first person account from a family memoir about the hurricane of October 1973. It was nearly identical to Wilma, including the path through the Caribbean, and the clear blue skies after it passed. They were caught while in the sawgrass swamp they were travelling through in between Jupiter and Lake Worth. GG Grandpa, GG Grandma and their 10 year old son weathered it under a 12 foot tender on a gator crawl. That hurricane pulled down a cold front bringing frost to New Orleans killing the mosquitos, stopping a yellow fever epidemic that had killed 226.. 1878 more than 4000 died.
Member Since: Settembre 23, 2006 Posts: 1 Comments: 1806
929. BurnedAfterPosting 01:41 AM GMT del 06 Agosto 2009    
Quoting indianrivguy:


Wilma pulled cold air down behind it and gave us clear skies before the sun went down here in Jensen Beach.[puffs out chest] I predicted it.

I have a first person account from a family memoir about the hurricane of October 1973. It was nearly identical to Wilma, including the path through the Caribbean, and the clear blue skies after it passed. They were caught while in the sawgrass swamp they were travelling through in between Jupiter and Lake Worth. GG Grandpa, GG Grandma and their 10 year old son weathered it under a 12 foot tender on a gator crawl. That hurricane pulled down a cold front bringing frost to New Orleans killing the mosquitos, stopping a yellow fever epidemic that had killed 226.. 1878 more than 4000 died.


I dont see any storm that hit florida in October of 1973
930. 2manytimes 01:42 AM GMT del 06 Agosto 2009    
Quoting stormwatcherCI:
There are some very good ones on here and then there are the others
but all in all you should get some understanding on here.
Sure hope to, Thanks.
931. CycloneOz 01:42 AM GMT del 06 Agosto 2009    
Quoting Patrap:
One could drive thru Ivan's Damage Swath in a Half Hour.


Not true, because I did it.

At 2PM, I took off from Cordova Park in Pensacola to head west to go back home to New Mexico.

The only open highway out of town was to McDavid and Atmore, AL.

It took me 3 hours to get down that highway to Interstate 65. Power was out all the way to Louisana.

And mobilegirl said Pensacola thought Ivan was going to be a Mobile storm...that's not totally accurate. There were those of us that had a strong feeling that sucker was going to keep hookin' into the panhandle.

Not to toot my own horn, but I knew exactly where this storm was going to go when it was down near Jamaica.

When I was sure Ivan would move more north before curving towards the NE (totally trashing the Tampa forecast landfall at the time,) I called my family in Pensacola and told them I was coming home for the hurricane. "What hurricane?" my Dad asked me.

By the time I got to Louisana a couple of days later, Ivan was headed for NO. The panic was palpable. Thousands of cars jammed I-10 and I-12. Awesome!

After arriving in P'cola and taking a 9-hour nap, my bro woke me up and told me that it looked like I was going to be right about Ivan.

At 12:30 AM on landfall, my last family contact, my other bro, called me from Tampa and said "Geez, Brian...it's hookin' right into Pensacola just like you said it would."

That's when the house started to shake.

Two-hours later, my scissor-cut sweatshirt was ripped off my body and I was de-pantsed in the middle of Bayou Blvd. by a 140-mph gust.

Awesome storm, savage and deadly.
Member Since: Agosto 26, 2006 Posts: 10 Comments: 3154
932. FLWeatherFreak91 01:43 AM GMT del 06 Agosto 2009    
Quoting Elena85Vet:


Wouldn't happen to be running a version of I.E. would you?
I upgraded to IE8 about a month ago and had issues here and couldn't run the sat. loops on NHC site. I had to uninstall and go back to IE7. Which fixed the problem.
I only run Firefox here now. No problems.
Nope. Internet Explorer is strictly for windows. I use Safari which is the mac browser. It's working fine now. Thanks though.
Member Since: Dicembre 1, 2006 Posts: 2 Comments: 3516
933. GatorWX 01:43 AM GMT del 06 Agosto 2009    
Quoting Tazmanian:
good thing Felicia is not in the gulf or this blog will be hoping like a bate out of a ball game heh


what??
Member Since: Gennaio 1, 2008 Posts: 0 Comments: 651
934. Elena85Vet 01:43 AM GMT del 06 Agosto 2009    
Jason, that IR image is from Aug 4th.
Today is the 5th.
Member Since: Agosto 18, 2008 Posts: 0 Comments: 619
936. CycloneOz 01:45 AM GMT del 06 Agosto 2009    
Quoting SavannahStorm:


Poor Enrique's getting gobbled up like a piece of delicious cake.


Yeah, and it looks like Enrique is a pretty big cake!

Question: Can the warm moist air from Enrique sustain Felicia until it makes it's way to Hawaii on Monday or Tuesday?
Member Since: Agosto 26, 2006 Posts: 10 Comments: 3154
937. hunkerdown 01:47 AM GMT del 06 Agosto 2009    
Quoting BurnedAfterPosting:


I dont see any storm that hit florida in October of 1973
I think he meant 1873, "October 7, 1873 – A major hurricane makes landfall near Fort Myers and causes heavy damage in Punta Rassa from its 14 foot (4.3 m) storm tide". Ok, that is from Wiki but if you google it you will find additional info.
Member Since: Agosto 15, 2008 Posts: 0 Comments: 2514
939. hunkerdown 01:48 AM GMT del 06 Agosto 2009    
Quoting GatorWX:


what??
come on, dont you know what "hoping like a bate" means ?
Member Since: Agosto 15, 2008 Posts: 0 Comments: 2514
941. GatorWX 01:49 AM GMT del 06 Agosto 2009    
Quoting Tazmanian:



read my post and you find out on your own on what i this said


ok, where in CA are you Taz?
Member Since: Gennaio 1, 2008 Posts: 0 Comments: 651
943. BurnedAfterPosting 01:49 AM GMT del 06 Agosto 2009    
Quoting hunkerdown:
I think he meant 1873, "October 7, 1873 – A major hurricane makes landfall near Fort Myers and causes heavy damage in Punta Rassa from its 14 foot (4.3 m) storm tide". Ok, that is from Wiki but if you google it you will find additional info.


yea i noticed that, ok so it was 1873
944. hunkerdown 01:50 AM GMT del 06 Agosto 2009    
Quoting mrnicktou:


I've had no problems with my mac on the site. Occasionally it says no blog posted but i think thats a site problem not mac problem
correct
Member Since: Agosto 15, 2008 Posts: 0 Comments: 2514
945. HurricaneKing 01:51 AM GMT del 06 Agosto 2009    
Quoting Elena85Vet:
Jason, that IR image is from Aug 4th.
Today is the 5th.


You talking about the IR CH 4 image he posted?

It actually has the date being the 6th on it.
Member Since: Luglio 6, 2005 Posts: 71 Comments: 2432
946. GatorWX 01:52 AM GMT del 06 Agosto 2009    
Quoting hunkerdown:
come on, dont you know what "hoping like a bate" means ?


no, but I was never much into baseball, aside from playing little league for a couple years
Member Since: Gennaio 1, 2008 Posts: 0 Comments: 651
947. stormwatcherCI 01:51 AM GMT del 06 Agosto 2009    
Quoting Elena85Vet:
Jason, that IR image is from Aug 4th.
Today is the 5th.
It says August 6th on the bottom of it.
Member Since: Ottobre 9, 2008 Posts: 0 Comments: 8063
948. Thundercloud01221991 01:53 AM GMT del 06 Agosto 2009    
Quoting 2manytimes:
Sure hope to, Thanks.


I am one of the really good ones.

Just kidding

you should really follow some of these

Weather456

StormW

leftovers is good too

I can not think of any of the names of others but there are quite a few that I listen to often. But I still give my opinion on storms :)
Member Since: Agosto 1, 2006 Posts: 28 Comments: 3693
949. CycloneOz 01:57 AM GMT del 06 Agosto 2009    
On the southern side of Felicia, isn't that a giant feeder band?

Question: Won't that giant feeder band still be over warmer water even though the core of Felicia heads towards cooler climes?
Member Since: Agosto 26, 2006 Posts: 10 Comments: 3154
950. stormwatcherCI 01:56 AM GMT del 06 Agosto 2009    
Quoting Thundercloud01221991:


I am one of the really good ones.

Just kidding

you should really follow some of these

Weather456

StormW

leftovers is good too

I can not think of any of the names of others but there are quite a few that I listen to often. But I still give my opinion on storms :)
There are quite a few and you will eventually figure out who to listen to and who is spouting rubbish but 456 and StormW are some of the better ones.
Member Since: Ottobre 9, 2008 Posts: 0 Comments: 8063
951. CycloneOz 02:00 AM GMT del 06 Agosto 2009    
There were two more very interesting things about Ivan.

1) The storm glowed that night, and lightning was never seen by myself or anyone I've talked to who survived the storm. It was a ghostly glow, and was bright enough for the human eye to see the ravages of the storm that night.

2) There was a "thump-thump-thump" sound to the storm, like a diesel engine of a ghost ship. Very low hertz, but clearly audible.

Ivan was the most interesting storm I've been in to date, by far.
Member Since: Agosto 26, 2006 Posts: 10 Comments: 3154

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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.

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