Dr. Jeff Masters' WunderBlog

A Tale of Two Invests
Posted by: Dr. Jeff Masters, 12:17 PM GMT on July 04, 2010 +2
Good morning, everybody, Dr. Rob Carver filling in for Jeff on Independence Day.

Currently, NHC is monitoring two different areas for possible tropical cyclone development. Invest 95L is about 125 miles west-southwest of the mouth of the Mississippi and it doesn't have much thunderstorm activity associated with it. Dry air from the north and strong wind shear have weakened it considerably from yesterday, and NHC believes it has a 10% chance of becoming a tropical cyclone before the feature makes landfall.

Invest 96L is in the western Caribbean sea and bears watching closely. Earlier in the morning, the convection was all on the east side of the circulation center, but thunderstorms have developed on the southwest side. According to the CIMMS wind shear analysis, 96L is on the outskirts of a low wind shear region just east of the Yucatan peninsula. It's also over warm SST's (>29 deg C), so it could intensify. NHC gives it a 20% chance of becoming a tropical cyclone in the next 48 hours. Computer models have 96L going through the Yucatan Channel then turning left and making landfall somewhere near the Rio Grande.


Fig. 1 IR satellite composite from 720AM EDT.

Next Update
My next post will be sometime Monday afternoon/evening. If the situation changes significantly before then, I'll make a new post. In any event, enjoy the holidays...
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1051. Patrap 7:22 PM GMT on July 04, 2010    
Member Since: July 3, 2005 Posts: 377 Comments: 113014
1052. MiamiHurricanes09 7:23 PM GMT on July 04, 2010    
Quoting extreme236:


Most likely your correct. But if it develops a well-defined surface circulation and sufficient organization before then, it could be classified.
Well it is possible that they could upgrade it before tomorrow, but they will need hard-core info such as a clear-cut ASCAT pass. Either way I'm very sure we will have TD #2 tomorrow after recon investigates.
Member Since: September 2, 2009 Posts: 129 Comments: 20012
1053. Tazmanian 7:23 PM GMT on July 04, 2010    
Quoting leo305:


it clearly isn't dead on the visible, stop calling a system dead when it clearly is not, even if everything is against it, it still is there and its alive and spinning.



that dos not mean a dran thing 95L is a

NON-TROPICAL AREA OF LOW
PRESSURE
Member Since: May 21, 2006 Posts: 5089 Comments: 111632
1054. FLWeatherFreak91 7:23 PM GMT on July 04, 2010    
Quoting Tazmanian:



95L is a non Tropic low
Looks tropical to me. I think we may get a little storm pop up there soon.
Member Since: December 1, 2006 Posts: 2 Comments: 3516
1055. angiest 7:23 PM GMT on July 04, 2010    
Quoting MiamiHurricanes09:
Between 12z and 18z coordinates 96L has been moving NW. If you extrapolate current motion, 96L will move through the Yucatan channel, clipping extreme western Cuba.


XTRP is not a model! :D
Member Since: August 26, 2006 Posts: 16 Comments: 4766
1056. MrstormX 7:23 PM GMT on July 04, 2010    
Some say the outer bands of Gustav were actually stronger then the cane. lol
Member Since: May 27, 2009 Posts: 0 Comments: 4312
1058. cg2916 7:24 PM GMT on July 04, 2010    
Quoting yonzabam:
What's the most likely track for 96L? Over Yucatan, through the channel or over Cuba?


NE tip of Yucatan, probably won't affect the system much.

Quoting Weather456:
Gonna go out on a limb and say reccon will find TD 2.


Well, considering the fact that ASCAT and WindSat are BOTH missing 96L, I don't know whether to agree or disagree, but I'm thinking it'll be a close call, but probably TD 2.
Member Since: December 21, 2007 Posts: 13 Comments: 2955
1059. IKE 7:24 PM GMT on July 04, 2010    
Buoy at 25.9N and 89.6W....Link

Wind Direction (WDIR): SW ( 230 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 5.8 kts
5-day plot - Wind Gust Wind Gust (GST): 7.8 kts
5-day plot - Wave Height Wave Height (WVHT): 2.3 ft
5-day plot - Dominant Wave Period Dominant Wave Period (DPD): 7 sec
5-day plot - Average Period Average Period (APD): 4.2 sec
5-day plot - Atmospheric Pressure Atmospheric Pressure (PRES): 29.95 in
5-day plot - Pressure Tendency Pressure Tendency (PTDY): -0.02 in ( Falling )
5-day plot - Air Temperature Air Temperature (ATMP): 83.8 °F
5-day plot - Water Temperature Water Temperature (WTMP): 84.9 °F
5-day plot - Dew Point Dew Point (DEWP): 74.3 °F
5-day plot - Heat Index Heat Index (HEAT): 91.0 °F
Member Since: June 9, 2005 Posts: 23 Comments: 37070
1060. leo305 7:24 PM GMT on July 04, 2010    
Quoting Tazmanian:



that dos not mean a dran thing 95L is a

NON-TROPICAL AREA OF LOW
PRESSURE


It can become a SUB TROPICAL LOW..

does not have to be purely tropical for it to develop..
Member Since: April 17, 2010 Posts: 0 Comments: 1752
1061. Patrap 7:24 PM GMT on July 04, 2010    
Member Since: July 3, 2005 Posts: 377 Comments: 113014
1062. Tazmanian 7:24 PM GMT on July 04, 2010    
Quoting Weather456:
Gonna go out on a limb and say reccon will find TD 2.



yup me too
Member Since: May 21, 2006 Posts: 5089 Comments: 111632
1063. Hurricanes101 7:24 PM GMT on July 04, 2010    
Ok these images from the LSU site are screwing up my internet really bad guys

use another site
Member Since: March 10, 2010 Posts: 1 Comments: 6930
1064. FormerTigergirl 7:24 PM GMT on July 04, 2010    
Quoting Dakster:
Hope 96L doesn't prove to be another "Ike" for Texas...


Shhh....please don't even think like that
Member Since: July 6, 2008 Posts: 0 Comments: 63
1065. Patrap 7:24 PM GMT on July 04, 2010    
Quoting Patrap:
Click FRONTS and MSLP

95L Floater - RGB Color Infrared Loop


It aint rocket science today,..LOL
Member Since: July 3, 2005 Posts: 377 Comments: 113014
1066. Cavin Rawlins 7:25 PM GMT on July 04, 2010    
Quoting cg2916:


NE tip of Yucatan, probably won't affect the system much.



Well, considering the fact that ASCAT and WindSat are BOTH missing 96L, I don't know whether to agree or disagree, but I'm thinking it'll be a close call, but probably TD 2.


We dont need those two useless pieces of data when we have reccon.
Member Since: July 24, 2005 Posts: 407 Comments: 19076
1067. Tazmanian 7:25 PM GMT on July 04, 2010    
Quoting btwntx08:
convection on 95L is gonna collaspe if not its doing that now


yup
Member Since: May 21, 2006 Posts: 5089 Comments: 111632
1068. extreme236 7:25 PM GMT on July 04, 2010    
Quoting leo305:


Who cares? It can become a SUB TROPICAL LOW..

does not have to be purely tropical for it to develop..


It is still attached to a front. Which means, it cannot develop into either a subtropical or tropical cyclone. Plus, it's soon heading for land.
Member Since: August 2, 2007 Posts: 19 Comments: 19234
1069. MiamiHurricanes09 7:25 PM GMT on July 04, 2010    
Quoting FLWeatherFreak91:
Looks tropical to me. I think we may get a little storm pop up there soon.
It is non-tropical because it is still attached to a frontal boundary. Here's what the NHC says:

"SMALL NON-TROPICAL AREA OF LOW PRESSURE"
Member Since: September 2, 2009 Posts: 129 Comments: 20012
1070. TankHead93 7:25 PM GMT on July 04, 2010    
Quoting Dirtleg:
NW of Tampa, JUST off shore. New spin starting up
Been looking at that since this morning on the Bay News 9 Klystron regional radar.
Member Since: August 12, 2009 Posts: 0 Comments: 203
1071. CoffinWood 7:25 PM GMT on July 04, 2010    
Quoting Hurricanes101:
Ok these images from the LSU site are screwing up my internet really bad guys

use another site


They work just fine for me.
Member Since: June 19, 2010 Posts: 0 Comments: 113
1072. Hurricanes101 7:26 PM GMT on July 04, 2010    
Quoting CoffinWood:


They work just fine for me.


me too now that I minused them lol

Member Since: March 10, 2010 Posts: 1 Comments: 6930
1073. TexasHurricane 7:26 PM GMT on July 04, 2010    


Member Since: July 2, 2009 Posts: 0 Comments: 2811
1074. jlp09550 7:26 PM GMT on July 04, 2010    
Is that a spin?

Member Since: February 21, 2008 Posts: 1 Comments: 340
1076. MrstormX 7:27 PM GMT on July 04, 2010    
95L looks like Marco.
Member Since: May 27, 2009 Posts: 0 Comments: 4312
1077. Hurricanes101 7:27 PM GMT on July 04, 2010    
ok Hardcoreweather

95L is non-tropical and still attached to a front

It may look pretty, but it is not going to develop into anything


96L has a much much higher chance of being a TD
Member Since: March 10, 2010 Posts: 1 Comments: 6930
1078. extreme236 7:27 PM GMT on July 04, 2010    
Quoting jlp09550:
Is that a spin?



It's been spinning. Nothing new there.
Member Since: August 2, 2007 Posts: 19 Comments: 19234
1079. Tazmanian 7:27 PM GMT on July 04, 2010    
Quoting extreme236:


It is still attached to a front. Which means, it cannot develop into either a subtropical or tropical cyclone. Plus, it's soon heading for land.



therenot geting it aret they
Member Since: May 21, 2006 Posts: 5089 Comments: 111632
1080. FLWeatherFreak91 7:27 PM GMT on July 04, 2010    
Quoting jlp09550:
Is that a spin?

Yes, a very tight one at that.
Member Since: December 1, 2006 Posts: 2 Comments: 3516
1081. Patrap 7:27 PM GMT on July 04, 2010    
Member Since: July 3, 2005 Posts: 377 Comments: 113014
1082. TXCaneCrasher 7:28 PM GMT on July 04, 2010    
Quoting Weather456:


Good question, it depends on how much heat 96L uses. if you notice 96L is trapped in fast steering flow so I suspect it would not remain in the NW Caribbean for long. I think there is enough heat to support a third system, though it will tend to be weaker.


Thank you 456. I am a new blogger but have always been very interested in the weather. Especially the Hurricance Season. I am here to learn as much as possible from you all. I see that you and StormW have Much Respect
Member Since: July 2, 2010 Posts: 0 Comments: 183
1083. MiamiHurricanes09 7:28 PM GMT on July 04, 2010    
I really want an SSD floater for 96L.
Member Since: September 2, 2009 Posts: 129 Comments: 20012
1084. Patrap 7:28 PM GMT on July 04, 2010    


Someone need a Browser upgrade, that IE stuff is archaic
Member Since: July 3, 2005 Posts: 377 Comments: 113014
1085. Hardcoreweather2010 7:29 PM GMT on July 04, 2010    
95L is clearly Tropical now. Deep convection fireing over the center and I suspect 20k to 30k winds. Recon would have been very nice to have
Member Since: January 24, 2010 Posts: 0 Comments: 529
1086. FLWeatherFreak91 7:29 PM GMT on July 04, 2010    
Tropical or subtropical doesn't make a difference... that is a developing low and looks to be developing rather quickly. Really tightens up nicely in the latest frames.
Member Since: December 1, 2006 Posts: 2 Comments: 3516
1087. earthlydragonfly 7:29 PM GMT on July 04, 2010    
Quoting Patrap:
itsa Mojo rising..


Itsa Mojo rising


LOL I thought so. Just seemed interesting that everything starts firing all at once...
Member Since: July 1, 2005 Posts: 10 Comments: 1653
1088. cg2916 7:30 PM GMT on July 04, 2010    
How many TCFA points does 96L have?
Member Since: December 21, 2007 Posts: 13 Comments: 2955
1089. Hurricanes101 7:30 PM GMT on July 04, 2010    
Quoting Patrap:


Someone need a Browser upgrade, that IE stuff is archaic


don't have IE, thank you for assuming though

It works fine now that I minused all the stuff from the LSU site lol
Member Since: March 10, 2010 Posts: 1 Comments: 6930
1090. mojofearless 7:30 PM GMT on July 04, 2010    
Quoting Patrap:
Gustav's first Band approaching in 08 NOLA





Patrap- WOW! That brings back memories.Facing Gustav was like getting back on the horse that kicked ya, at least for me, and when that first band came through, my stomach was flipping. It was SO dark, SO fast.
Anyway, happy 4th!
Member Since: August 13, 2009 Posts: 0 Comments: 170
1091. atmoaggie 7:30 PM GMT on July 04, 2010    
Yep. 96L building some of the deep stuff...95L notsomuch.

Member Since: August 16, 2007 Posts: 6 Comments: 12461
1092. extreme236 7:30 PM GMT on July 04, 2010    
Quoting Hardcoreweather2010:
95L is clearly Tropical now. Deep convection fireing over the center and I suspect 20k to 30k winds. Recon would have been very nice to have


-50C cloud tops is not "deep"
Member Since: August 2, 2007 Posts: 19 Comments: 19234
1093. kuppenskup 7:30 PM GMT on July 04, 2010    
96L looking Impressive but I think still at least 48hrs from a closed circulation unless something unusual happens.
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1094. Patrap 7:30 PM GMT on July 04, 2010    


Member Since: July 3, 2005 Posts: 377 Comments: 113014
1095. Mikla 7:30 PM GMT on July 04, 2010    
METAR and Buoy info near 96L...
Member Since: October 13, 2006 Posts: 0 Comments: 227
1096. MiamiHurricanes09 7:30 PM GMT on July 04, 2010    
Quoting FLWeatherFreak91:
Tropical or subtropical doesn't make a difference... that is a developing low and looks to be developing rather quickly. Really tightens up nicely in the latest frames.
Doesn't matter how well defined the low is, even if it has an eye popping out. 95L is attached to a frontal boundary and is non-tropical.
Member Since: September 2, 2009 Posts: 129 Comments: 20012
1097. cg2916 7:30 PM GMT on July 04, 2010    
Quoting MiamiHurricanes09:
I really want an SSD floater for 96L.


Me too.

Quoting Hardcoreweather2010:
95L is clearly Tropical now. Deep convection fireing over the center and I suspect 20k to 30k winds. Recon would have been very nice to have


Umm.... 456 you answer! LOL
Member Since: December 21, 2007 Posts: 13 Comments: 2955
1098. muddertracker 7:31 PM GMT on July 04, 2010    
I can only remember one time a storm transitioned and became a tropical storm..it was right after I started blogging here, i think. It was off the coast of South Carolina, if memory serves...can anyone help me out on this one? Probably around 2007/08?
Member Since: August 16, 2007 Posts: 1 Comments: 2169
1099. Patrap 7:31 PM GMT on July 04, 2010    
Quoting Hurricanes101:


don't have IE, thank you for assuming though

It works fine now that I minused all the stuff from the LSU site lol



Your welcome,

..anytime
Member Since: July 3, 2005 Posts: 377 Comments: 113014
1100. Cavin Rawlins 7:31 PM GMT on July 04, 2010    
Quoting cg2916:
How many TCFA points does 96L have?


35
Member Since: July 24, 2005 Posts: 407 Comments: 19076

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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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