Dr. Jeff Masters' WunderBlog

Hurricane Rina a strong category 2
Posted by: Angela Fritz, 9:16 PM GMT on October 25, 2011 +29
Hurricane Rina is now a strong category 2, and is slowly moving west-northwest toward Belize and the Yucatan Peninsula. Rina is packing winds of 110 mph and is crawling west at a 3 mph. Cancun radar shows some showers approaching the peninsula. Since this morning, satellite imagery has shown Rina becoming slightly more organized, and outflow has increased on all sides of the hurricane. Rina's eye appeared this afternoon, as well, though clouds continue to obscure it most of the time. Recent satellite images suggest thunderstorm activity is increasing around the eye (Figure 1). At 2pm EDT, wind shear was low (5-10 knots) near the cyclone, which is likely aiding it to intensify, but shear expected to increase over the next couple of days. This afternoon's Hurricane Hunter mission reported maximum surface winds of 108 mph north of the eye using the SMFR surface wind instrument, an observation that was not flagged for poor data quality. If the current satellite imagery and organization of the hurricane is indicative, Rina will probably reach major hurricane status tonight or early tomorrow. Another Hurricane Hunter mission is on the way to Rina this evening, and a NOAA-9 Gulfstream is also currently investigating the hurricane and sending back dropsonde information, which will be valuable for model forecasts.


Figure 1. Infrared satellite imagery of Rina taken around 12:45pm EDT on October 25. Image source: NOAA.

Forecast for Hurricane Rina
The forecast for Rina hasn't changed much since this morning. Some intensification is expected over the next 12 hours, though its slow speed could act to decrease sea surface temperatures around the hurricane, and thus decrease the amount of fuel available for further intensification. This afternoon's computer model runs continue to be somewhat divided on the likely track for the hurricane, although they seem to be coming into agreement that Rina will struggle to maintain its intensity after the land interaction with the Yucatan, as well as the high shear it will encounter in the coming days. The GFS continues to forecast that Rina will remain intact after a brief brush with the Yucatan before turning northeast and heading toward southern Florida. The HWRF model is also predicting a similar outcome. The ECMWF, on the other hand, is sticking to its forecast that Rina will lose organization once it reaches the Peninsula, and instead providing a heavy rain event for Florida in conjunction with the trough of low pressure that is expected to move through later this week.

The official forecast from the National Hurricane Center is for Rina to continue to move to the west-northwest over the next 12 hours before turning to the north toward the tip of the Yucatan. This initial forecast is in agreement with the GFS and HWRF tracks, though beyond Thursday, the Center is forecasting Rina to decrease in intensity and make a hard right turn toward the Florida Straits. Regardless, people in Belize and especially the Yucatan Peninsula should be prepared for major hurricane conditions, including a storm surge up to 7 feet above normal tide conditions, and rainfall up to 16 inches.

Jeff will be back tomorrow morning with an update.

Angela
Categories: Hurricane
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551. HurricaneHunterJoe 1:50 AM GMT on October 26, 2011    
Quoting HurricaneVSafety:


EWRC?
could be
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552. GTcooliebai 1:50 AM GMT on October 26, 2011    
Experimental FIM 850 mb. winds at 72 hrs.



250 mb. upper level winds

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553. Tazmanian 1:51 AM GMT on October 26, 2011    
how can it go under a EWRC if there no eye?
Member Since: May 21, 2006 Posts: 5089 Comments: 111624
554. PensacolaDoug 1:51 AM GMT on October 26, 2011    
Joe Bastardi knows his stuff. The bashers are clueless.
Member Since: July 25, 2006 Posts: 0 Comments: 4831
555. JLPR2 1:51 AM GMT on October 26, 2011    
I see we finally have a closed eyewall, but lower winds.
Hmm... those two just don't seem to fit.
Member Since: September 4, 2007 Posts: 7 Comments: 7528
556. chrisdscane 1:52 AM GMT on October 26, 2011    
is her eyewall closed?
Member Since: July 21, 2010 Posts: 0 Comments: 739
557. Chicklit 1:53 AM GMT on October 26, 2011    


LinkCIMSSSite

Offers a great menu for viewing Rina.
I won't make it to 11 to see what NHC says.
Goodnight and I hope everyone along the northern Yucatan has preparations in place.
Member Since: July 11, 2006 Posts: 14 Comments: 10380
558. Skyepony (Mod) 1:55 AM GMT on October 26, 2011    
Quoting chrisdscane:
is her eyewall closed?


yes..
Member Since: August 10, 2005 Posts: 145 Comments: 29960
559. charlottefl 1:55 AM GMT on October 26, 2011    
Quoting chrisdscane:
is her eyewall closed?



Pretty close

Member Since: December 18, 2006 Posts: 7 Comments: 2685
560. TropicalAnalystwx13 1:55 AM GMT on October 26, 2011    
Quoting JLPR2:
I see we finally have a closed eyewall, but lower winds.
Hmm... those two just don't seem to fit.

We'll see strengthening tonight and tomorrow with a closed eyewall.
Member Since: July 6, 2010 Posts: 92 Comments: 25961
561. TropicalAnalystwx13 1:56 AM GMT on October 26, 2011    
Quoting chrisdscane:
is her eyewall closed?

Yes, finally.
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562. wunderweatherman123 1:57 AM GMT on October 26, 2011    
she cant have an EWRC considering she didnt really have an eye. perhaps she peaked?
Member Since: August 23, 2011 Posts: 0 Comments: 843
563. charlottefl 1:57 AM GMT on October 26, 2011    
Quoting jrweatherman:


I have absolutely no idea what his posts mean or the value of them. Someone must because he keeps posting them.


Just shows you where the storm has been, and how far it is from "X" city if it traveled on it's current path.
Just a bunch of geographical stats...
Member Since: December 18, 2006 Posts: 7 Comments: 2685
564. Skyepony (Mod) 1:57 AM GMT on October 26, 2011    
Quoting Tazmanian:
how can it go under a EWRC if there no eye?


Recon flew through it not long ago, 17nm across, closed.

Notice vortex message.
Member Since: August 10, 2005 Posts: 145 Comments: 29960
565. Bordonaro 1:58 AM GMT on October 26, 2011    
Quoting JLPR2:
I see we finally have a closed eyewall, but lower winds.
Hmm... those two just don't seem to fit.

Her hurricane force winds are in a narrow 30 mile band. It will be very difficult to find a large swath of 110+ mph winds, unless they spend hours criss crossing Rina.

They most likely leave Rina as a 105 or 110 MPH hurricane come 11 PM EDT :)
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566. TropicalAnalystwx13 1:59 AM GMT on October 26, 2011    
Quoting wunderweatherman123:
she cant have an EWRC considering she didnt really have an eye. perhaps she peaked?

She has an eye, and a nice one, its just not visible right now because very cold cloud tops keep bursting in the eywall, obscuring the eye..I highly doubt she has peaked...probably has 5-10 kt. more to go (115-125 mph).
Member Since: July 6, 2010 Posts: 92 Comments: 25961
567. Tazmanian 1:59 AM GMT on October 26, 2011    
Quoting Skyepony:


Recon flew through it not long ago, 17nm across, closed.

Notice vortex message.



ok
Member Since: May 21, 2006 Posts: 5089 Comments: 111624
568. BDADUDE 2:00 AM GMT on October 26, 2011    
Quoting charlottefl:


Just shows you where the storm has been, and how far it is from "X" city if it traveled on it's current path.
Just a bunch of geographical stats...
What you are saying is as clear as mud. Still has no value.
Member Since: September 3, 2008 Posts: 0 Comments: 602
569. chrisdscane 2:01 AM GMT on October 26, 2011    
maybe she just like, well, trying to reform her core we know soooo litle about theese massive storms even with HH we still have no clue she could be doing a number of things its a good sign her eye wall is closed for intesification we'll see like i said she prolly just in the dressing room atm
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570. wunderweatherman123 2:02 AM GMT on October 26, 2011    
Quoting TropicalAnalystwx13:

She has an eye, and a nice one, its just not visible right now because very cold cloud tops keep bursting in the eywall, obscuring the eye..I highly doubt she has peaked...probably has 5-10 kt. more to go (115-125 mph).
we will see. there is some dry air in the NW quad but its not really bad. actually less than 3 hours ago... shear is eh not bad.. i think she will peak at 120mph. 11pm should be 110
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571. aspectre 2:02 AM GMT on October 26, 2011    
512 ProgressivePulse [inre 504 aspectre] "Thanks for that info, my eyes weren't playing tricks on me. Could be a jog but Rina is heading NW atm."

That's why I started posting 'em in the way back when. WUbers useta spend hours bickering about whether a storm had zigged north or zagged west.

538 BDADUDE "Im still not understanding the point of these dude!"

I've given rather lengthy explanations before. Perhaps you haven't caught them. If not, click on the link.
If you have, I don't know what to say except that other people find the mappings to be useful.
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572. DJMedik91 2:02 AM GMT on October 26, 2011    
Just curious, but where do Kermit and Gonzo fly out of? Meaning their home base.
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573. hurricanehunter27 2:03 AM GMT on October 26, 2011    
Next image and you will see the eye starting to clear out.

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574. alvarig1263 2:03 AM GMT on October 26, 2011    
Quoting Tazmanian:
how can it go under a EWRC if there no eye?


There is a closed, 15 mile in diameter eye, it just isn't very visible on satellite imagery, but the wall is closed and an eye is present.

EWRC stands for an eye wall replacement cycle. So since there is an "eye wall" then and "ewrc" could occur.
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575. charlottefl 2:03 AM GMT on October 26, 2011    
Quoting BDADUDE:
What you are saying is as clear as mud. Still has no value.


It's like the XTRAP except is has more geographical information, such as distance from certain cities, how long it would take to travel there on it's current speed and heading. And where the storm has been since a certain point in time (storm history). I like seeing it, but I'm a map person so..
Member Since: December 18, 2006 Posts: 7 Comments: 2685
576. portcharlotte 2:04 AM GMT on October 26, 2011    
Absolutely...the people who follow him and subscribe like myself and I know you do can really appreciate his expertise. It really bothers me when people who never really investigate his knowledge bash him. There so many misfits on here who have no clue about forecasting etc.and those like myself who worked for the NWS usually just watch the clowns on here and lay low because it's useless to give a professional piece of input.


Quoting PensacolaDoug:
Joe Bastardi knows his stuff. The bashers are clueless.
Member Since: September 7, 2008 Posts: 0 Comments: 703
577. charlottefl 2:04 AM GMT on October 26, 2011    
Quoting DJMedik91:
Just curious, but where do Kermit and Gonzo fly out of? Meaning their home base.


I'm pretty sure it's MacDill Air Force Base in Tampa. I'll double check tho..
Member Since: December 18, 2006 Posts: 7 Comments: 2685
578. Orcasystems 2:05 AM GMT on October 26, 2011    
All of us could take a lesson from the weather. It pays no attention to criticism.
Member Since: October 1, 2007 Posts: 77 Comments: 26110
580. wunderweatherman123 2:05 AM GMT on October 26, 2011    
i know whats causing rina to look eh. she injected a little bit of dry air in her NW side which cause her western side to look eh and some of it got into her core and prevented stregnthing. now looks like she fully digested that and she might start getting her act together
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581. charlottefl 2:05 AM GMT on October 26, 2011    
To carry out its mission, NOAA maintains a fleet of aircraft to acquire data on the atmosphere, environment, and geography. These aircraft conduct various missions such as flying into hurricanes and winter storms to determine their intensity and direction; conducting air quality studies; surveying snow pack for hydrologic forecasting, marine mammals and fish for resource assessments, and changing coastlines for cartography; and undertaking remote sensing and aerial photography projects. The fleet is managed by NOAA's Office of Marine and Aviation Operations Aircraft Operations Center, which is located at MacDill Air Force Base in Tampa, Florida.
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583. alvarig1263 2:06 AM GMT on October 26, 2011    
Eye wall is closed. I'm ready for some RI!
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584. Tazmanian 2:06 AM GMT on October 26, 2011    
are hurricane is looking a little rag it tonight
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585. GTcooliebai 2:08 AM GMT on October 26, 2011    
Quoting weatherman12345:

do you mind explaining this?
Well the top image is closest to the surface winds and the bottom image is closest to the upper level winds, I'm comparing the two to see how much damage the trough does to the storm.
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586. interstatelover7165 2:08 AM GMT on October 26, 2011    
Quoting chrisdscane:
maybe she just like, well, trying to reform her core we know soooo litle about theese massive storms even with HH we still have no clue she could be doing a number of things its a good sign her eye wall is closed for intesification we'll see like i said she prolly just in the dressing room atm
lol
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587. GTcooliebai 2:09 AM GMT on October 26, 2011    
Quoting alvarig1263:
Eye wall is closed. I'm ready for some RI!
I am too...but I would be selfish not to think about the folks along the Yucatan.
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588. chrisdscane 2:09 AM GMT on October 26, 2011    
Quoting interstatelover7165:
lol


she didnt like the bikini she had on
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589. interstatelover7165 2:10 AM GMT on October 26, 2011    
Quoting chrisdscane:


she didnt like the bikini she had on
lol
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590. weatherbro 2:11 AM GMT on October 26, 2011    
Quoting Tazmanian:
SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ANCHORAGE AK
138 PM AKDT TUE OCT 25 2011

.ANALYSIS AND UPPER LEVELS...

A POWERFUL 965 MB LOW RESIDES OVER THE BARREN ISLANDS REGION BETWEEN
KODIAK ISLAND AND THE KENAI PENINSULA AND HAS REACHED ITS PEAK
INTENSITY EARLY THIS AFTERNOON. AN ASSOCIATED STRONG WEATHER FRONT
EXTENDS FROM NEAR ANCHORAGE THROUGH PRINCE WILLIAM SOUND AND
SOUTHEAST THROUGH THE CENTRAL GULF OF ALASKA. MODERATE TO HEAVY
PRECIPITATION IS FALLING WITH THIS SYSTEM...ESPECIALLY ALONG PRINCE
WILLIAM SOUND AND ADJACENT MOUNTAINS...WITH SNOW AT HIGHER ELEVATIONS
INCLUDING COOPER LANDING...GLEN ALPS IN ANCHORAGE...AND THROUGH
THOMPSON PASS NORTHEAST OF VALDEZ.

A LARGE DEFORMATION ZONE EXISTS ON THE BACK SIDE OF THE LOW OVER
SOUTHWEST ALASKA AS THIS SYSTEM INTERACTS WITH A WEAKER LOW OVER THE
Y-K DELTA REGION THAT IS PUSHING NORTH. COLD AIR ALOFT IS CURRENTLY
POURING SOUTH CHANGING THE PRECIPITATION OVER TO SNOW AS FAR SOUTH AS
THE ALASKA PENINSULA.

ANOTHER WEAKER LOW PRESSURE SYSTEM IS PUSHING EAST ACROSS THE BERING
SEA AND WILL MOVE ACROSS THE AKPEN LATE TONIGHT AND WEDNESDAY MORNING
TO A POSITION SOUTH OF KODIAK LATE WEDNESDAY NIGHT


More to help bomb-out the Alaskan Low!!!
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591. TropicalAnalystwx13 2:11 AM GMT on October 26, 2011    
Rina had some problems a little while ago, but it looks like it is getting back on its feet again. Not sure if the NHC will go with 110 mph or 115 mph at 11PM.
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592. alvarig1263 2:11 AM GMT on October 26, 2011    
Quoting GTcooliebai:
I am too...but I would be selfish not to think about the folks along the Yucatan.


I mean I am no expert but at this point I don't think Rina is going to make a direct landfall. I think she will get close but I believe she may be able to stay right offshore and continue intensifying.
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593. TropicalAnalystwx13 2:12 AM GMT on October 26, 2011    
Eye coming back?

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594. sar2401 2:13 AM GMT on October 26, 2011    
Quoting alvarig1263:


Kermit is from Tampa. Not sure about Gonzo.


The NOAA aircraft fly out of MacDill AFB in Tampa and the Navy's WC-130J's fly out of Keesler AFB in Biloxi, Mississippi.
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595. DJMedik91 2:13 AM GMT on October 26, 2011    
Thanks charlottefl and alvarig1263. I was almost certain I saw one of them take off, since I am not far at all from Macdill, but couldn't tell the type of plane from a distance.
Usually it's just the KC-135 air tankers or the occasional F-16, but it is an Air Force base so a C-130 isnt out of the question.
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597. chrisdscane 2:14 AM GMT on October 26, 2011    
Quoting alvarig1263:


I mean I am no expert but at this point I don't think Rina is going to make a direct landfall. I think she will get close but I believe she may be able to stay right offshore and continue intensifying.


i respect ur opinion but she would have to climb northward a good amount to do that what do u think
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598. GTcooliebai 2:15 AM GMT on October 26, 2011    
Quoting alvarig1263:


I mean I am no expert but at this point I don't think Rina is going to make a direct landfall. I think she will get close but I believe she may be able to stay right offshore and continue intensifying.
Well I didn't think of it that way for all we know the worst of the weather stays just offshore and seeing that she has a small core of Hurricane force winds it will make all the matter in the world if it stays 30 miles to the east.
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599. ProgressivePulse 2:16 AM GMT on October 26, 2011    
Quoting sar2401:


The NOAA aircraft fly out of MacDill AFB in Tampa and the Navy's WC-130J's fly out of Keesler AFB in Biloxi, Mississippi.



United States Air Force Reserve's 53rd Weather Reconnaissance Squadron
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600. DJMedik91 2:16 AM GMT on October 26, 2011    
Thanks to you as well sar2401.....
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601. alvarig1263 2:16 AM GMT on October 26, 2011    
Quoting chrisdscane:


i respect ur opinion but she would have to climb northward a good amount to do that what do u think


Well the official NHC track has her just skirting by the Yucatan peninsula and the GFS is also staying offshore. The other models take here onto land but not for long. All I know is that the beating the Yucatan will get will surely not be as bad as what they got from Wilma. So that is a good thing.
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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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