Dr. Jeff Masters' WunderBlog

Typhoon Roke batters Japan; Ophelia forms in the Central Atlantic
Posted by: Dr. Jeff Masters, 1:28 PM GMT on September 21, 2011 +18
Typhoon Roke hit Japan near Hamamatsu at 14:00 JST Wednesday as a Category 1 typhoon with 80 mph winds. Roke brought sustained winds of 62 mph, gusting to 83 mph to the Tokyo airport at 5:25 pm local time, and a wind gust of 89 mph was reported at Shizuhama Airbase. Roke has dumped heavy rains of 155 mm (6.20") at Hamamatsu and 125 mm (4.86") at Tokyo. Damage due to flooding from Roke's heavy rains will likely be the main problem from Roke, as the soils over much of Japan are saturated from the passage of Tropical Storm Talas during the first week of September. Talas was a very slow moving storm, and brought extreme rainfall amounts of over six feet to some portions of Japan. Roke brought winds less than 25 mph to the damaged Fukishima-Dai-Iche nuclear plant northeast of Tokyo, and heavy rains of 189 mm (7.50") to Hirono, located 8 miles south of the plant.


Figure 1. Radar image of Typhoon Roke as it made landfall at 14:00 JST on September 21, 2011. The typhoon brought a large area of rainfall of 50 mm/hr (2"/hr) to Japan. Image credit: Japan Meteorological Agency.


Figure 2. MODIS image of Typhoon Roke taken at 3:55 UTC on Wednesday, September 21, 2011. At the time, Roke was a Category 1 storm with 80 mph winds. Image credit: NASA.

Tropical Storm Ophelia forms in the Atlantic
Tropical Storm Ophelia formed last night in the Central Atlantic from the tropical wave (Invest 98L) we've been tracking this week. Satellite imagery shows that Ophelia is suffering the classic symptoms of high wind shear, with the low level center of circulation exposed to view, and the storm's heavy thunderstorms pushed to the northeast side of the center of circulation. An analysis of wind shear from the University of Wisconsin CIMMS group shows a high 20 - 30 knots of wind shear due to strong upper level west-southwesterly winds affecting Ophelia. We don't have any ship, buoy, or hurricane hunter observations of Ophelia's winds, but an ASCAT pass from 7:27 pm EDT last night found top winds of 45 mph in the northeast quadrant of the storm. Ophelia will be passing south of buoy 41041 late tonight. Water vapor satellite images show dry air to the the west of Ophelia, and the strong upper level west-southwesterly winds bringing high wind shear to the storm are also injecting dry air into the storm's core, interfering with development.


Figure 3. Morning satellite image of Ophelia showing the low-level center exposed to view, with all the storm's heavy thunderstorms pushed to the northeast side.

Forecast for Ophelia
The latest SHIPS model forecast predicts that Ophelia will experience moderate to high wind shear of 10 - 25 knots over the next five days, and will move into a region with drier air. The combination of shear and dry air should keep Ophelia from strengthening, and could dissipate the storm, as predicted by the ECMWF and HWRF models. The Northern Lesser Antilles could see some wind gusts of 30 - 40 mph and heavy rain squalls from Ophelia on Saturday and Sunday, but right now it looks unlikely that the islands would see sustained tropical storm force winds of 39+ mph, since they are likely to be on Ophelia's weaker (dry) side. At longer ranges, Bermuda will have to keep an eye on Ophelia, since a large cut-off low pressure system over the Eastern U.S. should turn Ophelia to the northwest and then north early next week. Ophelia may eventually be a threat to Canada, but it is too early to assess the odds of this happening.

Ophelia is the 15th named storm this year, putting 2011 in 10th place for the most number of named storms in a year. Ophelia's formation date of September 21 puts 2011 in 4th place for earliest date of arrival of the season's 15th storm. Only 2005, 1936, and 1933 had an earlier 15th storm. With only three of this year's fifteen storms reaching hurricane strength, though, this year has been near average for destructive potential. Atlantic hurricane records go back to 1851.

Jeff Masters
Categories: Hurricane
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201. hcubed 7:51 PM GMT on September 21, 2011    
Quoting WeatherWx:


blockhead, TUTT isnt in a dictionary.lol you claim to be an expert!


Actually, if you google TUTT, you do get some hits:

TUTT The Universe Think Tank (TUTT Group)
TUTT Technologies United Trade Trust (Des Moines, Iowa USA)
TUTT The United Trade Trust (TUTT Group)
TUTT The Universe Trade Trust (TUTT Group)

He just has to pick one...
Member Since: May 18, 2007 Posts: 286 Comments: 1639
203. DFWjc 7:54 PM GMT on September 21, 2011    
Quoting MTWX:

Arctic ice melt won't ever cause sea level rise, Antarctic ice will...


i thought it won't matter what portion melts..if you place an ice cube in water and it melts inside the cup, doesn't mean it will overflow just because it melted..
Member Since: July 19, 2011 Posts: 1 Comments: 967
204. robintampabay 7:54 PM GMT on September 21, 2011    
Quoting basti11:


well you think about me when that major hurricane threatens south fla in october..ill be praying for you lord knows you need all the help you can get..



Born and raised in Tampa, Don't think we will see a Major creeping up the mouth of the bay come Oct.
Member Since: September 16, 2010 Posts: 0 Comments: 74
205. DFWjc 7:54 PM GMT on September 21, 2011    
.
Member Since: July 19, 2011 Posts: 1 Comments: 967
206. JLPR2 7:55 PM GMT on September 21, 2011    
Africa is still producing, but that last one is riding pretty low.
Member Since: September 4, 2007 Posts: 7 Comments: 7487
207. TropicalAnalystwx13 7:55 PM GMT on September 21, 2011    
lol.

Its funny how you guys go by the logic that if nobody quotes him, he will go away.

Guess what? That isn't happening!

The trolls won't stop until they are banned.
Member Since: July 6, 2010 Posts: 89 Comments: 25327
208. MTWX 7:56 PM GMT on September 21, 2011    
Quoting DFWjc:


i thought it won't matter what portion melts..if you place an ice cube in water and it melts the cup doesn't mean it will overflow just because it melted..

Not to be mean but there is a very large land mass under the ice on the south pole. You are actually making my point.
Member Since: July 20, 2009 Posts: 22 Comments: 1215
209. DFWjc 7:56 PM GMT on September 21, 2011    
Quoting hcubed:


Actually, if you google TUTT, you do get some hits:

TUTT The Universe Think Tank (TUTT Group)
TUTT Technologies United Trade Trust (Des Moines, Iowa USA)
TUTT The United Trade Trust (TUTT Group)
TUTT The Universe Trade Trust (TUTT Group)

He just has to pick one...


If you don't know, research it people. I guess people forgot how to do that....and now back to weather and not to quoting trolls or people who think they are...
Member Since: July 19, 2011 Posts: 1 Comments: 967
210. DFWjc 7:58 PM GMT on September 21, 2011    
Quoting MTWX:

Not to be mean but there is a very large land mass under the ice on the south pole. You are actually making my point.


nope didn't know that, i never really learned anything about Antarctica, looks like I need to go and learn about it so i can be educated about it...
Member Since: July 19, 2011 Posts: 1 Comments: 967
211. JLPR2 7:58 PM GMT on September 21, 2011    
This might get interesting tonight. Convection has almost covered the LLC.

Member Since: September 4, 2007 Posts: 7 Comments: 7487
213. carcar1967 7:59 PM GMT on September 21, 2011    
Quoting Ameister12:

Tropical Upper Tropospheric Trough. It is an upper low in the tropics. These things are accompanied by shear and will inhibit tropical cyclone formation or intensification if the TC is too close.


Thanks :-)
Member Since: June 9, 2011 Posts: 0 Comments: 99
214. Muffelchen 7:59 PM GMT on September 21, 2011    
Quoting DFWjc:


i thought it won't matter what portion melts..if you place an ice cube in water and it melts inside the cup, doesn't mean it will overflow just because it melted..


Archimedes Principle. Doesn't apply at S Pole though....
Member Since: August 21, 2007 Posts: 0 Comments: 72
215. RedStickCasterette 8:00 PM GMT on September 21, 2011    
Quoting TropicalAnalystwx13:
lol.

Its funny how you guys go by the logic that if nobody quotes him, he will go away.

Guess what? That isn't happening!

The trolls won't stop until they are banned.


Funny...I see people quoting the "troll" left and right.

I really don't see the issue with Basti. Leave that person alone to give his opinion.

Is it only "certain" people that are allowed to voice their opinions on here??? If that person is not in the "group" then they are a troll, or if their opinion differs?

Hmmm, I didn't realize this blog was junior high.
Member Since: July 20, 2010 Posts: 0 Comments: 257
216. TropicalAnalystwx13 8:00 PM GMT on September 21, 2011    
Quoting JLPR2:
This might get interesting tonight. Convection has almost covered the LLC.



It'll look horrible tonight, just like the same cycle 99% of these pathetic storms have went through.

We've been RELATIVELY lucky this season, considering.
Member Since: July 6, 2010 Posts: 89 Comments: 25327
217. GTcooliebai 8:00 PM GMT on September 21, 2011    
Quoting robintampabay:



Born and raised in Tampa, Don't think we will see a Major creeping up the mouth of the bay come Oct.
Are you a long time native of Tampa, if you're, were you around for Hurricane Alma, Wiki says it brought a 10 foot storm surge to New Port Richey?
Member Since: August 31, 2009 Posts: 0 Comments: 5191
218. MTWX 8:01 PM GMT on September 21, 2011    
Quoting DFWjc:


nope didn't know that, i never really learned anything about Antarctica, looks like I need to go and learn about it so i can be educated about it...

It's actually quite beautiful. I have a friend who spent a year down there as a radio operator. He took some awesome pictures!
Member Since: July 20, 2009 Posts: 22 Comments: 1215
220. DFWjc 8:01 PM GMT on September 21, 2011    
Quoting Muffelchen:


Archimedes Principle. Doesn't apply at S Pole though....


Thanks for that couldn't think of the name of the principle

Why won't the floating ice caps melting in the North Pole/Arctic Ocean affect sea level? (Because this floating ice is already displacing its own volume in water.) Only the ice that breaks off or melts from land, i.e. the Greenland ice sheet, Antarctic ice sheet, and mountain glaciers can raise sea level.
Member Since: July 19, 2011 Posts: 1 Comments: 967
221. Hangten 8:01 PM GMT on September 21, 2011    
Quoting TropicalAnalystwx13:
lol.

Its funny how you guys go by the logic that if nobody quotes him, he will go away.

Guess what? That isn't happening!

The trolls won't stop until they are banned.


If you called a number and got a message that it was disconnected, would you still try calling that number? Try ignoring them and do not quote them. It does work. They cannot control their behavior, you can. They have an illness and can't help it. You enable them everytime you answer them.
Member Since: August 24, 2011 Posts: 0 Comments: 61
222. DFWjc 8:02 PM GMT on September 21, 2011    
Quoting Hangten:


If you called a number and got a message that it was disconnected, would you still try calling that number? Try ignoring them and do not quote them. It does work. They cannot control their behavior, you can. They have an illness and can't help it. You enable them everytime you answer them.


+1000
Member Since: July 19, 2011 Posts: 1 Comments: 967
224. TropicalAnalystwx13 8:03 PM GMT on September 21, 2011    
I'm telling you guys, it doesn't work.

And announcing on the main blog, where they can read it, that if we ignore them, they will go away, isn't helping . Will just make them want to post more, because they know you are paying attention XD
Member Since: July 6, 2010 Posts: 89 Comments: 25327
225. CybrTeddy 8:04 PM GMT on September 21, 2011    
FWIW, Ophelia is the first 'O' name Cape Verde systems.
Member Since: July 8, 2005 Posts: 253 Comments: 20260
226. Hou77083 8:04 PM GMT on September 21, 2011    
Quoting TropicalAnalystwx13:
lol.

Its funny how you guys go by the logic that if nobody quotes him, he will go away.

Guess what? That isn't happening!

The trolls won't stop until they are banned.


I wish they would add a "Ban Troll" button to the blog.
Member Since: July 5, 2010 Posts: 0 Comments: 86
227. GTcooliebai 8:05 PM GMT on September 21, 2011    
Quoting RedStickCasterette:


Funny...I see people quoting the "troll" left and right.

I really don't see the issue with Basti. Leave that person alone to give his opinion.

Is it only "certain" people that are allowed to voice their opinions on here??? If that person is not in the "group" then they are a troll, or if their opinion differs?

Hmmm, I didn't realize this blog was junior high.
Oh don't worry I've seen worst...and when I mean worst, I mean spam and trolls, just go to ESPN and you'll see what I'm talking about. Anyways the trolls don't bother me, actually they can be quite entertaining at times, lighten up the mood and spirits guys, we only have one life to live, no reason to get mad on a blog, with a complete stranger you don't even know. Btw I don't have anyone on ignore, and hope that is the same for everyone about me.
Member Since: August 31, 2009 Posts: 0 Comments: 5191
228. TropicalAnalystwx13 8:05 PM GMT on September 21, 2011    
Quoting CybrTeddy:
FWIW, Ophelia is the first 'O' name Cape Verde systems.


Yep.

First ever.
Member Since: July 6, 2010 Posts: 89 Comments: 25327
230. wilburo33 8:06 PM GMT on September 21, 2011    
A Tropical Upper Tropospheric Trough (TUTT), also known as the mid-oceanic trough,[1] is a trough situated in upper-level (at about 200 hPa) tropics. Its formation is usually caused by the intrusion of energy and wind from the mid-latitudes into the tropics. It can also develop from the inverted trough adjacent to an upper level anticyclone. TUTTs are different from mid-latitude troughs in the sense that they are maintained by subsidence warming near the tropopause which balances radiational cooling. When strong, they can present a significant vertical wind shear to the tropics and subdue tropical cyclogenesis. When upper cold lows break off from their base, they tend to retrograde and force the development, or enhance, surface troughs and tropical waves to their east. Under special circumstances, they can induce thunderstorm activity and lead to the formation of tropical cyclones.

Member Since: August 30, 2004 Posts: 0 Comments: 8
232. TropicalAnalystwx13 8:10 PM GMT on September 21, 2011    
Wow..Those are cold cloud tops.



Member Since: July 6, 2010 Posts: 89 Comments: 25327
233. MikeVentrice 8:11 PM GMT on September 21, 2011    
Quoting JLPR2:
Africa is still producing, but that last one is riding pretty low.


There are a number of factors that we are seeing convection somewhat more equatorward over Africa. One factor is the current passage of a convectively-coupled Kelvin wave over West Africa, which increases thunderstorms closer to the equator than a normal African easterly wave would. Another factor is that we are beginning to see the retreat of the intertropical convergence zone (ITCZ) towards the equator. I have attached a 90 day latitude-time plot of TRMM 3B42 rainrate averaging over the longtidudes of 10-20W (West Sahel). This plot suggests that the West African Monsoon is beginning to weaken as we would expect during this time of year, and would suggest the number of seedlings for tropical cyclones will begin to reduce. It does not necessarily mean we will not see a developing tropical cyclone over the main development region this year... but it suggests we probably won't see multiple tropical cyclones at one time there.

Member Since: September 8, 2011 Posts: 1 Comments: 25
235. RedStickCasterette 8:13 PM GMT on September 21, 2011    
Quoting GTcooliebai:
Oh don't worry I've seen worst...and when I mean worst, I mean spam and trolls, just go to ESPN and you'll see what I'm talking about. Anyways the trolls don't bother me, actually they can be quite entertaining at times, lighten up the mood and spirits guys, we only have one life to live, no reason to get mad on a blog, with a complete stranger you don't even know. Btw I don't have anyone on ignore, and hope that is the same for everyone about me.


I have seen worse too. I don't ignore anyone either, although it's tempting at times.

I just find it funny that those who are calling someone a troll are actually the ones acting trollish. I can also see why this blog is going quickly downhill. It seems to me a certain group thinks they run this place now and apparently, are getting away with the nonsense.

What a shame. There are lots of folks like me that have lurked for many years and rarely post. I wonder how many that we don't know about, have been run off.
Member Since: July 20, 2010 Posts: 0 Comments: 257
236. DDR 8:15 PM GMT on September 21, 2011    
Quoting Jedkins01:


Dude you and me both, sunny and dry weather sucks. I wish we had a 80 to 90% chance of storms 360 days year round! I live in Central Florida, we can get a lot of rain here for an extended period but then we get very dry periods too. Ive had 63.37 inches so far this year. Thankfully we are not below normal like last year, in fact we are actually above normal by 11 inches for the entire year lol. Last year we had a very lame 39 the entire year.

Maybe I should move the the equator, where they have a 12 month wet season! Every month is wet and active, some are wetter than others of course.

Here in Trinidad,western areas of the island average between 60-80 inches a year,hilly areas like where i live and eastern areas average more than 120 inches.
Last year i recorded 157inches of rain between May 14th and December 31st.
Member Since: April 27, 2007 Posts: 13 Comments: 1475
237. TropicalAnalystwx13 8:15 PM GMT on September 21, 2011    
Quoting DDR:

Here in Trinidad,western areas of the island average between 60-80 inches a year,hilly areas like where i live and eastern areas average more than 120 inches.
Last year i recorded 157inches of rain between May 14th and December 31st.


That's a lot of rain...
Member Since: July 6, 2010 Posts: 89 Comments: 25327
239. Neapolitan 8:17 PM GMT on September 21, 2011    
Quoting JLPR2:
Africa is still producing, but that last one is riding pretty low.

Low, yes. But all the major models are showing varying levels of development over the next several days...
Member Since: November 8, 2009 Posts: 4 Comments: 11166
240. stormpetrol 8:18 PM GMT on September 21, 2011    
Ophelia COC 12.8N/45W, jmo.
Member Since: April 29, 2007 Posts: 0 Comments: 6400
241. TropicalAnalystwx13 8:19 PM GMT on September 21, 2011    
Quoting stormpetrol:
Ophelia COC 12.8N/45W, jmo.


I have 45W, 13.2N.
Member Since: July 6, 2010 Posts: 89 Comments: 25327
242. DFWjc 8:20 PM GMT on September 21, 2011    
Quoting Hou77083:


I wish they would add a "Ban Troll" button to the blog.


they do it's call the "!" and the "-" do those in that order...it may take 15-20 mins...but it gets the job done
Member Since: July 19, 2011 Posts: 1 Comments: 967
243. kabloie 8:21 PM GMT on September 21, 2011    
Well, judging from the satellite view and storm history, I was on the tarmac at Tokyo Narita Airport when Roke's center was passing pretty darn close. Just passing through, I had no idea of the weather situation. We went into a circular holding pattern coming in from Seoul, twice. Below 25k feet the ride went from heavy chop to pretty crazy in a 777. The landing was pretty heroic, through massive sheets of rain. Everyone clapped, and I got to personally thank the pilot :) Getting out, everyone was at the reroute desk. Somehow my flight was not cancelled. That's the first time I heard "typhoon" all week. At 5:30 PM Japan time, we took off in a 747-400 United 838. We sat out on the tarmac for awhile because (the captain reported) the airport radar had gone down. The plane was rocking about quite a bit. Finally we got out, and after some big lurching bumps up to ~10,000 feet, it was smooth from there on.

Close enough for me.
Member Since: November 16, 2002 Posts: 1 Comments: 65
244. DFWjc 8:22 PM GMT on September 21, 2011    
Quoting basti11:



well unlike you i respect your opnion but dont agree with it...i want to get the record straight here since im being recorded for everything i say...it will be s fla getting hit by the major hurricane in october..it may not come right over TAMPA but you will get some affects from it...ok i feel better now...


I always hate it when people say a Hurricane "eye" hit somewhere 20 miles south of them, then say "thank god it missed us", really irks me and the vein on my forehead grows....
Member Since: July 19, 2011 Posts: 1 Comments: 967
245. Tazmanian 8:22 PM GMT on September 21, 2011    
google earth ueser 6.1 is out

you have too un stall google earth 6.0 too in stall 6.1 be come when you hit updates the updates wont work
Member Since: May 21, 2006 Posts: 5088 Comments: 111355
246. TropicalWeatherGrl88 8:22 PM GMT on September 21, 2011    
Quoting basti11:



well unlike you i respect your opnion but dont agree with it...i want to get the record straight here since im being recorded for everything i say...it will be s fla getting hit by the major hurricane in october..it may not come right over TAMPA but you will get some affects from it...ok i feel better now...



I personally don't think the conditions will be good enough to produce a major, but then again is the weather anything is possible. I just don't see it happening as of right now.
Member Since: September 17, 2010 Posts: 0 Comments: 216
247. RedStickCasterette 8:22 PM GMT on September 21, 2011    
Quoting basti11:



well unlike you i respect your opnion but dont agree with it...i want to get the record straight here since im being recorded for everything i say...it will be s fla getting hit by the major hurricane in october..it may not come right over TAMPA but you will get some affects from it...ok i feel better now...


I admire your tenacity. Don't let the bullying attitude here run you off.

You are free to express your opinion just as the rest are. If you are incorrect about S. Florida, then so be it. There are many here that are wrong quite a bit. No one should be getting info here on the blogs to make life and death decisions with anyway. That is for the NHC, etc.

Carry on...
Member Since: July 20, 2010 Posts: 0 Comments: 257
249. TropicalAnalystwx13 8:23 PM GMT on September 21, 2011    
Quoting kabloie:
Well, judging from the satellite view and storm history, I was on the tarmac at Tokyo Narita Airport when Roke's center was passing pretty darn close. Just passing through, I had no idea of the weather situation. We went into a circular holding pattern coming in from Seoul, twice. Below 25k feet the ride went from heavy chop to pretty crazy in a 777. The landing was pretty heroic, through massive sheets of rain. Everyone clapped, and I got to personally thank the pilot :) Getting out, everyone was at the reroute desk. Somehow my flight was not cancelled. That's the first time I heard "typhoon" all week. At 5:30 PM Japan time, we took off in a 747-400 United 838. We sat out on the tarmac for awhile because (the captain reported) the airport radar had gone down. The plane was rocking about quite a bit. Finally we got out, and after some big lurching bumps up to ~10,000 feet, it was smooth from there on.

Close enough for me.


Sounds kind of scary..Glad you're ok!
Member Since: July 6, 2010 Posts: 89 Comments: 25327
250. hurricanejunky 8:26 PM GMT on September 21, 2011    
Quoting Tazmanian:
google earth ueser 6.1 is out

you have too un stall google earth 6.0 too in stall 6.1 be come when you hit updates the updates wont work


Any new and exciting features?
Member Since: August 28, 2006 Posts: 6 Comments: 2875

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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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