Dr. Jeff Masters' WunderBlog

Tropical wave 92L weakens but could bring heavy rains to Haiti
Posted by: Dr. Jeff Masters, 2:23 PM GMT on June 20, 2010 +3
The tropical wave (92L) that brought heavy rains of 2 - 5 inches to Puerto Rico on Saturday is continuing westward at 10 - 15 mph, but has grown very disorganized. The National Hurricane Center is no longer interested enough in this wave to classify it as an "invest" worthy of generating computer forecasts for. Today through Monday, 92L will encounter 20 - 40 knots of wind shear as it plows though a region of strong upper-level winds associated with the subtropical jet stream. The disturbance will also encounter the mountainous terrain of Hispaniola and Cuba. If there is anything left of 92L after crossing these mountains, it may have the opportunity to develop beginning on Tuesday, when it will enter a region of wind shear less than 20 knots near central Cuba. None of our reliable computer forecast models is calling for 92L to develop once it reaches this region of lower wind shear. I give 92L a 10% chance of developing into a tropical depression by Saturday. The storm could bring heavy rains of up to four inches to Haiti today and Monday. Rain of four inches are probably the lower threshold for life-threatening floods to occur in the Haiti earthquake zone, and this disturbance poses the most serious flooding threat Haiti has seen since the earthquake.


Figure 1. Radar estimated rainfall over Puerto Rico from Invest 92L.

Elsewhere in the tropics
The NOGAPS and ECMWF models call for a possible tropical depression to form in the central or western Caribbean next weekend, 6 - 8 days from now.

Wind and ocean current forecast for the BP oil disaster
Southeast to east winds less than 10 knots will blow in the northern Gulf of Mexico Monday through Thursday, according to the latest marine forecast from NOAA. The resulting weak ocean currents should cause little motion of the oil slick, according to the latest trajectory forecasts from NOAA and the State of Louisiana. The long range outlook calls for a continued summertime weather pattern of weak winds over the Gulf of Mexico during the coming two weeks.


Figure 2. Visible satellite image from NASA's MODIS instrument of the Deepwater Horizon oil slick from Saturday, June 19, 2010.

Resources for the BP oil disaster
My post, What a hurricane would do the Deepwater Horizon oil spill
My post on the Southwest Florida "Forbidden Zone" where surface oil will rarely go
My post on what oil might do to a hurricane
NOAA's interactive mapping tool allows one to overlay wind and ocean current forecasts, oil locations, etc.
Gulf Oil Blog from the UGA Department of Marine Sciences
Oil Spill Academic Task Force
University of South Florida Ocean Circulation Group oil spill forecasts
ROFFS Deepwater Horizon page
Synthetic Aperture Radar (SAR) imagery from the University of Miami

Happy Father's Day, all you fathers out there, and I'll have an update on Monday.

Jeff Masters
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2551. Drakoen 2:20 PM GMT on June 21, 2010    
SHIPS ofrecast for very low shear and High Heat content.


* ATLANTIC SHIPS INTENSITY FORECAST *
* GOES DATA AVAILABLE *
* OHC DATA AVAILABLE *
* INVEST AL932010 06/21/10 12 UTC *

TIME (HR) 0 6 12 18 24 36 48 60 72 84 96 108 120
V (KT) NO LAND 25 27 29 33 37 46 56 65 70 76 80 84 88
V (KT) LAND 25 27 29 33 37 46 56 65 70 76 80 84 88
V (KT) LGE mod 25 26 27 29 31 35 41 49 59 70 80 90 96

SHEAR (KT) 7 7 12 9 5 7 7 5 8 4 2 6 8
SHEAR ADJ (KT) -4 -2 -4 -6 -3 -4 -2 -2 -4 -4 -3 -5 -4
SHEAR DIR 212 168 172 185 266 183 285 263 301 213 291 229 348
SST (C) 28.9 28.9 28.9 28.8 28.8 28.8 28.9 29.0 29.1 29.2 29.3 29.5 29.6
POT. INT. (KT) 151 151 151 149 149 149 150 151 152 154 155 159 160
ADJ. POT. INT. 151 150 151 149 148 147 146 145 143 144 145 147 146
200 MB T (C) -53.2 -52.3 -52.1 -52.5 -52.9 -52.1 -52.7 -52.4 -53.0 -52.6 -52.9 -52.6 -53.0
TH_E DEV (C) 7 7 6 6 6 8 8 10 10 12 10 12 10
700-500 MB RH 83 84 85 82 81 80 78 74 72 68 67 64 64
GFS VTEX (KT) 0 LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST LOST
850 MB ENV VOR 67 84 82 85 80 80 67 71 65 69 57 52 26
200 MB DIV 83 78 83 84 80 79 58 44 23 7 -11 -3 3
LAND (KM) 238 207 178 195 201 326 231 192 276 265 212 241 228
LAT (DEG N) 13.0 13.3 13.6 14.0 14.3 15.1 15.7 16.3 16.6 16.9 17.4 18.0 18.5
LONG(DEG W) 67.2 68.3 69.4 70.7 71.9 74.3 76.6 78.6 80.3 81.7 83.1 84.3 85.4
STM SPEED (KT) 12 11 12 13 12 12 11 9 7 7 7 6 5
HEAT CONTENT 67 56 64 76 76 70 82 113 104 83 91 87 84
Member Since: October 28, 2006 Posts: 57 Comments: 29010
2553. Walshy 2:21 PM GMT on June 21, 2010    
Quoting StormW:


?????





I try. I try.
Member Since: May 17, 2009 Posts: 2 Comments: 618
2554. PensacolaDoug 2:21 PM GMT on June 21, 2010    
Quoting Patrap:
WHo's JB?

I thought they made Scotch ?



I'm a "Dewer's" man myself....
Member Since: July 25, 2006 Posts: 0 Comments: 4827
2555. JDSmith 2:21 PM GMT on June 21, 2010    
Quoting 69Viking:


I patrolled 10 miles of Beach on an ATV Sunday morning ending at the Destin West Jetti and no signs of oil the entire trip. I guess a few patches of oil came in last week but they got it cleaned up and not most of our area is in good shape until the next wave of oil, time will tell.


I went out last night, and found them on the beach to the west of the Jetty. Should I have called someone?
Member Since: August 15, 2008 Posts: 0 Comments: 85
2556. SpFox 2:22 PM GMT on June 21, 2010    
Homemade comparative June 21 2010 vs June 21 2005

Member Since: May 23, 2010 Posts: 0 Comments: 26
2557. FLWeatherFreak91 2:22 PM GMT on June 21, 2010    
Quoting BFG308:


Does Tampa area have a water treatment facility or do they only supply from the gulf, and release back to the gulf?
Tampa gets all of its water from the Hillsborough River and St. Pete/Clearwater gets their water from wells within Hillsborough Co and the desalinization plant.
Member Since: December 1, 2006 Posts: 2 Comments: 3458
2558. twhcracker 2:22 PM GMT on June 21, 2010    
how is the oil in grand isle now, even worse? We dont hear about it now anymore since it is hitting us here in fla. just wondered if currents are affecting it differently aqnd making it less. or is it the same. or more?
Member Since: July 30, 2007 Posts: 6 Comments: 1448
2559. CaneWarning 2:22 PM GMT on June 21, 2010    
Quoting Drakoen:
Cannot believe what I am seeing on the ECMWF. A 950mb major hurricane going ov er the oil spill and impacting the Gulf Coast. Dreadful run.


That doesn't look good at all. Tampa would have oil all over if that track verifies.
Member Since: April 26, 2009 Posts: 3 Comments: 3667
2560. Floodman 2:22 PM GMT on June 21, 2010    
Quoting Patrap:
WHo's JB?

I thought they made Scotch ?


Nah, this guy drinks it...
Member Since: August 2, 2006 Posts: 10 Comments: 9919
2561. PensacolaDoug 2:22 PM GMT on June 21, 2010    
Quoting JDSmith:


I went out last night, and found them on the beach to the west of the Jetty. Should I have called someone?



St Andrews?
Member Since: July 25, 2006 Posts: 0 Comments: 4827
2562. centex 2:22 PM GMT on June 21, 2010    
I've read that somewhere else.
Member Since: August 10, 2007 Posts: 0 Comments: 2856
2564. aquak9 2:23 PM GMT on June 21, 2010    
Quoting StormW:


I'll have one with ya!


it's five'o'clock somewhere...
Member Since: August 13, 2005 Posts: 163 Comments: 24996
2565. 900MB 2:23 PM GMT on June 21, 2010    
Quoting Hardcoreweather2010:
962mb Cane in the Oily waters of the GOM if yhe Euro is correct



That is one nasty scenario! I would figure that plenty of oil would be tossed into the loop current. Not good for Fla or anyone else for that matter.
Member Since: June 11, 2006 Posts: 0 Comments: 609
2566. Patrap 2:23 PM GMT on June 21, 2010    
Quoting twhcracker:
how is the oil in grand isle now, even worse? We dont hear about it now anymore since it is hitting us here in fla. just wondered if currents are affecting it differently aqnd making it less. or is it the same. or more?



Grand Isle Proper in the front ,,is getting some oil..but the Main influx seems to be near Barataria Bay.

Member Since: July 3, 2005 Posts: 370 Comments: 111244
2567. wxmobilejim 2:23 PM GMT on June 21, 2010    
Quoting Jeff9641:


That was an old blog from Fri or Sat.

No it's a new entry from 930 this morning.
Member Since: May 11, 2010 Posts: 0 Comments: 230
2569. JDSmith 2:24 PM GMT on June 21, 2010    
Quoting PensacolaDoug:



St Andrews?


Destin.
Member Since: August 15, 2008 Posts: 0 Comments: 85
2570. smmcdavid 2:24 PM GMT on June 21, 2010    
Quoting 69Viking:


I patrolled 10 miles of Beach on an ATV Sunday morning ending at the Destin West Jetti and no signs of oil the entire trip. I guess a few patches of oil came in last week but they got it cleaned up and not most of our area is in good shape until the next wave of oil, time will tell.


Hiya! Long time, no see...

Morning Storm, and all. I see we have 93L to discuss.
Member Since: September 20, 2005 Posts: 31 Comments: 2309
2571. Walshy 2:24 PM GMT on June 21, 2010    
Quoting Funkadelic:


Yes that is a terrible run, but I still think it means nothing without a defined LLC, plus model runs can change once they send out the hurricane hunters to gather observations of the environment around the storm. So nothing is set in stone, hell it still has a chance to curve out to sea.



Terrible run or not, a storm with this strength will move the oil or cause BP to temporarily leave the GOM.
Member Since: May 17, 2009 Posts: 2 Comments: 618
2572. PensacolaDoug 2:24 PM GMT on June 21, 2010    
I still miss Oz......He likes scotch too.
Bill Clinton likes Jack.
I like booze....
Member Since: July 25, 2006 Posts: 0 Comments: 4827
2573. FLWeatherFreak91 2:25 PM GMT on June 21, 2010    
Quoting Funkadelic:


Yes that is a terrible run, but I still think it means nothing without a defined LLC, plus model runs can change once they send out the hurricane hunters to gather observations of the environment around the storm. So nothing is set in stone, hell it still has a chance to curve out to sea.
Well, I can almost promise you it won't be going out to sea... Look at steering
Member Since: December 1, 2006 Posts: 2 Comments: 3458
2574. aquak9 2:25 PM GMT on June 21, 2010    
drakoen- when you start posting SHIPs, you're scarin' me.
Member Since: August 13, 2005 Posts: 163 Comments: 24996
2575. kmanislander 2:25 PM GMT on June 21, 2010    
Quoting StormW:


Bingo! Good for R.I.


Wow, SHIPS really likes that blob !
Member Since: August 19, 2006 Posts: 0 Comments: 14939
2576. Drakoen 2:25 PM GMT on June 21, 2010    
Member Since: October 28, 2006 Posts: 57 Comments: 29010
2577. FLWeatherFreak91 2:26 PM GMT on June 21, 2010    
Quoting Drakoen:
Curving bands on the north half of the storm
Member Since: December 1, 2006 Posts: 2 Comments: 3458
2578. RitaEvac 2:26 PM GMT on June 21, 2010    
Long range down the road, showing NW/WNW movement once it gets to Yucatan.
Member Since: July 14, 2008 Posts: 1 Comments: 8874
2579. Patrap 2:27 PM GMT on June 21, 2010    
Cue da Jaws Movie theme score...


Member Since: July 3, 2005 Posts: 370 Comments: 111244
2580. WaterWitch11 2:27 PM GMT on June 21, 2010    
morning all. the set up for 93 is not looking good.
Member Since: August 11, 2008 Posts: 3 Comments: 1266
2581. RitaEvac 2:27 PM GMT on June 21, 2010    
High pressure ridge steering looks to drive this thing whatever it becomes....Louisiana bound
Member Since: July 14, 2008 Posts: 1 Comments: 8874
2582. Drakoen 2:27 PM GMT on June 21, 2010    
Quoting aquak9:
drakoen- when you start posting SHIPs, you're scarin' me.


There is really nothing to stop this system from organizing and strengthening from what I see.
Member Since: October 28, 2006 Posts: 57 Comments: 29010
2584. hydrus 2:28 PM GMT on June 21, 2010    
Quoting StormW:
Whoever did something to Mother Natures Cornflakes...please apologize immediately!!
I would say b.p. is at fault for the corn flake thing. I also would say that quite a few models have a storm rolling over the oil disaster area. What a coincidence.
Member Since: September 27, 2007 Posts: 1 Comments: 14238
2585. GeoffreyWPB 2:28 PM GMT on June 21, 2010    
This looks bad for the GOM.
Member Since: September 10, 2007 Posts: 0 Comments: 9107
2587. hydrus 2:29 PM GMT on June 21, 2010    
Quoting Drakoen:
It is a healthy looking blob for sure.
Member Since: September 27, 2007 Posts: 1 Comments: 14238
2588. 69Viking 2:30 PM GMT on June 21, 2010    
Quoting JDSmith:


I went out last night, and found them on the beach to the west of the Jetty. Should I have called someone?


I volunteer for the Eglin Natural Resources and here are some numbers to call if you find oil or oiled wildlife.

Report that information on your cell phone to #DEP
Or on regular land line: 877 272-8335
Member Since: August 25, 2006 Posts: 0 Comments: 2247
2589. hurricane23 2:30 PM GMT on June 21, 2010    
Quoting Drakoen:


There is really nothing to stop this system from organizing and strengthening from what I see.


The Ops run of the EURO is a major outlier compared to its ensemble members.

Member Since: May 14, 2006 Posts: 8 Comments: 13272
2590. RitaEvac 2:30 PM GMT on June 21, 2010    
Point of initation of the LLC is key to where this thing will end up.
Member Since: July 14, 2008 Posts: 1 Comments: 8874
2591. KEEPEROFTHEGATE (Mod) 2:30 PM GMT on June 21, 2010    

151

WHXX01 KWBC 211310

CHGHUR

TROPICAL CYCLONE GUIDANCE MESSAGE

NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL

1310 UTC MON JUN 21 2010



DISCLAIMER...NUMERICAL MODELS ARE SUBJECT TO LARGE ERRORS.

PLEASE REFER TO NHC OFFICIAL FORECASTS FOR TROPICAL CYCLONE

AND SUBTROPICAL CYCLONE INFORMATION.



ATLANTIC OBJECTIVE AIDS FOR



DISTURBANCE INVEST (AL932010) 20100621 1200 UTC



...00 HRS... ...12 HRS... ...24 HRS. .. ...36 HRS...

100621 1200 100622 0000 100622 1200 100623 0000



LAT LON LAT LON LAT LON LAT LON

BAMS 13.0N 67.2W 13.7N 69.3W 14.4N 71.6W 15.2N 73.9W

BAMD 13.0N 67.2W 13.8N 69.3W 14.5N 71.5W 15.3N 73.7W

BAMM 13.0N 67.2W 13.6N 69.4W 14.3N 71.9W 15.1N 74.3W

LBAR 13.0N 67.2W 14.0N 69.6W 15.2N 72.2W 16.2N 74.7W

SHIP 25KTS 29KTS 37KTS 46KTS

DSHP 25KTS 29KTS 37KTS 46KTS



...48 HRS... ...72 HRS... ...96 HRS. .. ..120 HRS...

100623 1200 100624 1200 100625 1200 100626 1200



LAT LON LAT LON LAT LON LAT LON

BAMS 15.8N 76.1W 16.8N 80.1W 17.8N 83.3W 19.1N 85.7W

BAMD 15.9N 75.7W 16.7N 78.9W 17.6N 81.7W 18.6N 84.1W

BAMM 15.7N 76.6W 16.6N 80.3W 17.4N 83.1W 18.5N 85.4W

LBAR 16.9N 77.1W 18.0N 81.1W 19.7N 84.0W 22.2N 85.5W

SHIP 56KTS 70KTS 80KTS 88KTS

DSHP 56KTS 70KTS 80KTS 88KTS



...INITIAL CONDITIONS...

LATCUR = 13.0N LONCUR = 67.2W DIRCUR = 280DEG SPDCUR = 13KT

LATM12 = 12.5N LONM12 = 64.5W DIRM12 = 281DEG SPDM12 = 13KT

LATM24 = 11.8N LONM24 = 60.5W

WNDCUR = 25KT RMAXWD = 30NM WNDM12 = 25KT

CENPRS = 1010MB OUTPRS = 1011MB OUTRAD = 120NM SDEPTH = S

RD34NE = 0NM RD34SE = 0NM RD34SW = 0NM RD34NW = 0NM



$$

NNNN


Member Since: July 15, 2006 Posts: 143 Comments: 40365
2592. BFG308 2:30 PM GMT on June 21, 2010    
Quoting FLWeatherFreak91:
Tampa gets all of its water from the Hillsborough River and St. Pete/Clearwater gets their water from wells within Hillsborough Co and the desalinization plant.


Well, I don't know anything about desalinization, but I would think a normal water treatment facility may or may not have an issue with oily water, depending on what kind of treatment they use. They can get a lot of crap out of water. Unfortunately, that doesn't help the wildlife in the area...
Member Since: June 17, 2010 Posts: 2 Comments: 35
2593. MahFL 2:31 PM GMT on June 21, 2010    
I think if the storm goes over the leak site, they will have to remove the cap, so it will be leaking uncontained for a few days....is that right ?
Member Since: June 9, 2004 Posts: 0 Comments: 2417
2594. nishinigami 2:31 PM GMT on June 21, 2010    
Quoting CaneWarning:


That doesn't look good at all. Tampa would have oil all over if that track verifies.



Just curious. Why would a hurricane hitting the north gulf cause oil to be in Tampa?

Thanks,

Kelley
Member Since: August 24, 2008 Posts: 2 Comments: 221
2595. CybrTeddy 2:31 PM GMT on June 21, 2010    
Quoting hurricane23:


The Ops run of the EURO is a major outlier compared to its ensemble members.



Euro isn't the only model developing this system.
Member Since: July 8, 2005 Posts: 253 Comments: 20179
2596. Patrap 2:32 PM GMT on June 21, 2010    
DeepwaterHorizonJIC — June 20, 2010 — The Coast Guard flies pelicans rehabilitated from the BP Deepwater Horizon oil spill from New Orleans to Texas to be released into the wild June 20, 2010. U.S. Coast Guard video by Petty Officer 2nd Class Gina Ruoti.


Member Since: July 3, 2005 Posts: 370 Comments: 111244
2600. hydrus 2:33 PM GMT on June 21, 2010    
Quoting Floodman:


Nah, this guy drinks it...
The big guys at b.p. will be drinkin it if the ECMWF model verifies.
Member Since: September 27, 2007 Posts: 1 Comments: 14238
2601. RitaEvac 2:34 PM GMT on June 21, 2010    
If I was invested in the market/Wall Street. I'd get out now while you can. Storm heading for spill and things are going to get outta control.
Member Since: July 14, 2008 Posts: 1 Comments: 8874

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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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