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...
Categories: Hurricane
  Permalink | A A A
Reader Comments
Display: 0, 50, 100, 200 Sort: Newest First - Order Posted
Viewing: 1951 - 2001

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109Blog Index

1951. TampaSpin 11:37 PM GMT on July 04, 2010    


Member Since: September 2, 2007 Posts: 176 Comments: 19767
1952. HurricaneSwirl 11:38 PM GMT on July 04, 2010    
WOW yellow, yellow, yellow, orange
Member Since: July 7, 2008 Posts: 2 Comments: 3237
1953. Drakoen 11:38 PM GMT on July 04, 2010    
NHC notes there is not closed surface circulation with 96L at this time
Member Since: October 28, 2006 Posts: 57 Comments: 29012
1954. BahaHurican 11:38 PM GMT on July 04, 2010    
Member Since: October 25, 2005 Posts: 19 Comments: 17960
1955. futuremet 11:38 PM GMT on July 04, 2010    
Quoting Weather456:
Nice structure



This could very well become a tropical depression tomorrow.
Member Since: July 19, 2008 Posts: 43 Comments: 4049
1956. JRRP 11:38 PM GMT on July 04, 2010    
Quoting AllStar17:
4 CIRCLES!

looks like August
Member Since: August 16, 2007 Posts: 0 Comments: 4357
1957. Tazmanian 11:39 PM GMT on July 04, 2010    
hey doc come back
Member Since: May 21, 2006 Posts: 5089 Comments: 111614
1958. SiestaCpl 11:39 PM GMT on July 04, 2010    
Quoting AllStar17:
EPAC has gone dead silent.


That is interesting to note as when the EPAC goes quiet we will find elevated activity for the rest of the season in the Atlantic as climatology warms...
Member Since: June 26, 2008 Posts: 0 Comments: 345
1959. weather42009 11:39 PM GMT on July 04, 2010    
Good call 456 and others!
1960. Torgen 11:39 PM GMT on July 04, 2010    
Quoting SiestaCpl:


Not right mind here..or left mind...just and Indian..and when they crawl into the wrong place best to move them out in a friendly way and wish them well....besides they don't bit much...


Black snakes are awesome! They eat pests, and are beautiful. I haven't seen the one that lives in the vines outside my home office this year, wondering if the hawk in my avatar got him.
Member Since: June 3, 2010 Posts: 0 Comments: 321
1961. Drakoen 11:39 PM GMT on July 04, 2010    
Quoting Weather456:
Nice structure



Looks to be around 16.9N 82W based on that
Member Since: October 28, 2006 Posts: 57 Comments: 29012
1962. HurricaneSwirl 11:39 PM GMT on July 04, 2010    
Quoting MiamiHurricanes09:
I have never seen 4 circles. Wow. LOL!


I guess you weren't here for years such as 2005 and 2008, and well, pretty much any year other than 09 and 06. lol
Member Since: July 7, 2008 Posts: 2 Comments: 3237
1963. helove2trac 11:39 PM GMT on July 04, 2010    
what is the time frame for 96l to get into the gulf of mexico
1964. JRRP 11:39 PM GMT on July 04, 2010    
Member Since: August 16, 2007 Posts: 0 Comments: 4357
1965. HurricaneSwirl 11:40 PM GMT on July 04, 2010    
Quoting Drakoen:
NHC notes there is not closed surface circulation with 96L at this time


Yeah I saw that, it's probably the only reason why it's not at code red/TD status yet.
Member Since: July 7, 2008 Posts: 2 Comments: 3237
1966. TexasHurricane 11:40 PM GMT on July 04, 2010    
I see they up'd 96L to 50% chance of developing...
Member Since: July 2, 2009 Posts: 0 Comments: 2811
1967. MiamiHurricanes09 11:40 PM GMT on July 04, 2010    
Quoting HurricaneSwirl:


I guess you weren't here for years such as 2005 and 2008, and well, pretty much any year other than 09 and 06. lol
I wasn't. LOL.
Member Since: September 2, 2009 Posts: 129 Comments: 20002
1968. Tazmanian 11:40 PM GMT on July 04, 2010    
looks like will see 97L 98L
Member Since: May 21, 2006 Posts: 5089 Comments: 111614
1969. Claudette1234 11:40 PM GMT on July 04, 2010    
2. A VIGOROUS TROPICAL DISTURBANCE LOCATED OVER THE NORTHWESTERN
CARIBBEAN SEA IS BECOMING BETTER ORGANIZED. ALTHOUGH THERE DOES NOT
APPEAR TO BE A CLOSED SURFACE CIRCULATION AT THIS TIME...NEARBY
SHIP AND BUOY OBSERVATIONS INDICATED WINDS OF TROPICAL-STORM-FORCE
BRIEFLY OCCURRED IN ASSOCIATION WITH THIS SYSTEM DURING THE PAST
FEW HOURS. ENVIRONMENTAL CONDITIONS ARE CONDUCIVE FOR DEVELOPMENT
OF THIS DISTURBANCE AS IT MOVES GENERALLY WEST-NORTHWESTWARD AT 10
TO 15 MPH...AND A TROPICAL DEPRESSION COULD DEVELOP DURING THE NEXT
COUPLE OF DAYS. THERE IS A MEDIUM CHANCE...50 PERCENT...OF THIS
SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS.
LOCALLY HEAVY RAINFALL AND STRONG GUSTY WINDS WILL BE POSSIBLE OVER
GRAND CAYMAN ISLAND AND MUCH OF THE NORTHWESTERN CARIBBEAN SEA OVER
THE NEXT DAY OR SO.
Member Since: July 21, 2009 Posts: 0 Comments: 549
1970. LADobeLady 11:40 PM GMT on July 04, 2010    
Who in the heck opened up the tropical wave door? I'm going on vacation next week, this is not acceptable!
Member Since: July 29, 2005 Posts: 21 Comments: 794
1971. Cavin Rawlins 11:40 PM GMT on July 04, 2010    
The circles reflect the image below from this morning's update

Member Since: July 24, 2005 Posts: 407 Comments: 19076
1972. Patrap 11:40 PM GMT on July 04, 2010    
Wv

Member Since: July 3, 2005 Posts: 377 Comments: 112939
1973. MiamiHurricanes09 11:41 PM GMT on July 04, 2010    
Oh man... Here comes 95L, 96L, 97L, 98L. LOL, I told ya' this mornin'.
Member Since: September 2, 2009 Posts: 129 Comments: 20002
1974. TexasHurricane 11:41 PM GMT on July 04, 2010    
Quoting HurricaneSwirl:
WOW yellow, yellow, yellow, orange


what? I only see 2 circles. Yellow and orange.
Member Since: July 2, 2009 Posts: 0 Comments: 2811
1975. Tazmanian 11:41 PM GMT on July 04, 2010    
hmmm i dont think we where going too see 4
Member Since: May 21, 2006 Posts: 5089 Comments: 111614
1976. tropicfreak 11:41 PM GMT on July 04, 2010    
000
ABNT20 KNHC 042335
TWOAT
TROPICAL WEATHER OUTLOOK
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
800 PM EDT SUN JUL 4 2010

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

A SMALL BUT WELL ORGANIZED LOW PRESSURE SYSTEM IS LOCATED ABOUT 125
MILES SOUTH-SOUTHEAST OF THE CENTRAL LOUISIANA COAST. THIS LOW IS
EXPECTED TO MOVE NORTHWARD AT 5 TO 10 MPH OVER THE NEXT 12 HOURS OR
SO...THEN TURN NORTHWESTWARD AFTER THAT. ENVIRONMENTAL CONDITIONS
ARE ONLY MARGINALLY CONDUCIVE FOR DEVELOPMENT...AND THERE IS A LOW
CHANCE...20 PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE
BEFORE IT MOVES INLAND BY MONDAY EVENING.

A VIGOROUS TROPICAL DISTURBANCE LOCATED OVER THE NORTHWESTERN
CARIBBEAN SEA IS BECOMING BETTER ORGANIZED. ALTHOUGH THERE DOES NOT
APPEAR TO BE A CLOSED SURFACE CIRCULATION AT THIS TIME...NEARBY
SHIP AND BUOY OBSERVATIONS INDICATED WINDS OF TROPICAL-STORM-FORCE
BRIEFLY OCCURRED IN ASSOCIATION WITH THIS SYSTEM DURING THE PAST
FEW HOURS. ENVIRONMENTAL CONDITIONS ARE CONDUCIVE FOR DEVELOPMENT
OF THIS DISTURBANCE AS IT MOVES GENERALLY WEST-NORTHWESTWARD AT 10
TO 15 MPH...AND A TROPICAL DEPRESSION COULD DEVELOP DURING THE NEXT
COUPLE OF DAYS. THERE IS A MEDIUM CHANCE...50 PERCENT...OF THIS
SYSTEM BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS.
LOCALLY HEAVY RAINFALL AND STRONG GUSTY WINDS WILL BE POSSIBLE OVER
GRAND CAYMAN ISLAND AND MUCH OF THE NORTHWESTERN CARIBBEAN SEA OVER
THE NEXT DAY OR SO.

A BROAD TROUGH OF LOW PRESSURE LOCATED ABOUT 150 MILES NORTHEAST OF
THE BAHAMAS IS PRODUCING A LARGE AREA OF CLOUDINESS AND SHOWERS.
THIS SYSTEM IS CURRENTLY MOVING EASTWARD AT 10 TO 15 MPH...BUT IS
EXPECTED TO GRADUALLY SLOW DOWN AND POSSIBLY BECOME STATIONARY EAST
OF THE BAHAMAS. UPPER-LEVEL WINDS ARE ONLY MARGINALLY CONDUCIVE FOR
DEVELOPMENT AND THERE IS A LOW CHANCE...10 PERCENT...OF THIS SYSTEM
BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS.

AN AREA OF DISTURBED WEATHER APPROACHING THE LESSER ANTILLES WILL
BRING LOCALLY HEAVY RAINFALL AND GUSTY WINDS TO THE LEEWARD AND
NORTHERN WINDWARD ISLANDS...THE VIRGIN ISLANDS...AND PUERTO RICO
DURING THE NEXT COUPLE OF DAYS. ENVIRONMENTAL CONDITIONS COULD
ALLOW FOR SOME SLOW DEVELOPMENT OF THIS DISTURBANCE AS IT MOVES
WEST-NORTHWESTWARD AT ABOUT 15 MPH. THERE IS A LOW CHANCE...20
PERCENT...OF THIS SYSTEM BECOMING A TROPICAL CYCLONE DURING THE
NEXT 48 HOURS.

ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE
NEXT 48 HOURS.

$$
FORECASTER CANGIALOSI/STEWART


Looks like they upped up 96L to 50%, just as I suspected. They also upped 95L to 20%.
Member Since: September 2, 2006 Posts: 110 Comments: 6612
1977. Patrap 11:42 PM GMT on July 04, 2010    
96L working the swirl at the Mid Levels.
the surface will follow suit next 12most likely.

Member Since: July 3, 2005 Posts: 377 Comments: 112939
1978. Greyelf 11:42 PM GMT on July 04, 2010    
WABC reporting Terminal 1 at JFK evacuated due to "a threat of some kind". Link
Member Since: June 5, 2007 Posts: 18 Comments: 838
1979. SiestaCpl 11:42 PM GMT on July 04, 2010    
Quoting Weather456:
Nice structure



Perhaps the surface level close low isn't so very far away..10 minutes I'd guess..
Member Since: June 26, 2008 Posts: 0 Comments: 345
1980. MiamiHurricanes09 11:42 PM GMT on July 04, 2010    
Quoting TexasHurricane:


what? I only see 2 circles. Yellow and orange.
It will take a couple minutes for them to come out, wait until 8:30ish.
Member Since: September 2, 2009 Posts: 129 Comments: 20002
1982. helove2trac 11:42 PM GMT on July 04, 2010    
show me a four circles i only seen 2 orange and yellow
1983. HurricaneSwirl 11:42 PM GMT on July 04, 2010    
97L likely soon with the Antilles wave. Maybe 98L for the Bahamas disturbance.
Member Since: July 7, 2008 Posts: 2 Comments: 3237
1984. Patrap 11:43 PM GMT on July 04, 2010    
Member Since: July 3, 2005 Posts: 377 Comments: 112939
1985. HurricaneSwirl 11:43 PM GMT on July 04, 2010    
Quoting MiamiHurricanes09:
I wasn't. LOL.


lol, well still, I haven't seen 4 at once in JULY. o_o
Member Since: July 7, 2008 Posts: 2 Comments: 3237
1986. bappit 11:43 PM GMT on July 04, 2010    
Quoting StormW:


Alex was blocked by a mid level ridge, not upper...and regardless of what the NHC has, it's not a wave...it's the same monsoonal, Typhoon type development.

So the first point sounds like a semantic issue. The second one is more interesting. What is supplying the vorticity for 96L? It seems a lot different from Alex in that respect. With Alex it took a long time for vorticity to develop. This one seems to have it ready made--as by a wave moving through the area.
Member Since: May 18, 2006 Posts: 4 Comments: 4423
1987. LADobeLady 11:43 PM GMT on July 04, 2010    
Quoting Tazmanian:



JFV did it


It had to be him or Stormtop
Member Since: July 29, 2005 Posts: 21 Comments: 794
1988. SiestaCpl 11:43 PM GMT on July 04, 2010    
Quoting futuremet:


Right on the money!


50% and rising..well said!
Member Since: June 26, 2008 Posts: 0 Comments: 345
1989. BahaHurican 11:43 PM GMT on July 04, 2010    
Graphics are lagging text.
Member Since: October 25, 2005 Posts: 19 Comments: 17960
1990. pottery 11:43 PM GMT on July 04, 2010    
Good Evening all.
A rainy one here today, humidity between high 80's and 100% with constant rain (not heavy).
Wind generally calm, and pressure now 1011.
Would not be surprised to see 97L east of the Islands tomorrow morning, tracking NW south of the high .

96L looking very impressive...

Plenty of stuff setting up in the Caribbean, Antilles, and around 95L.
We got busy, fast.

Happy July 4th!
Member Since: October 24, 2005 Posts: 0 Comments: 20866
1991. MiamiHurricanes09 11:44 PM GMT on July 04, 2010    
Quoting HurricaneSwirl:


lol, well still, I haven't seen 4 at once in JULY. o_o
There ya' go. Lol.
Member Since: September 2, 2009 Posts: 129 Comments: 20002
1992. Cavin Rawlins 11:44 PM GMT on July 04, 2010    
They started the Antilles wave at 20%
Member Since: July 24, 2005 Posts: 407 Comments: 19076
1993. HurricaneSwirl 11:44 PM GMT on July 04, 2010    
Quoting TexasHurricane:


what? I only see 2 circles. Yellow and orange.


The actual physical circles aren't updated on the map yet. But if you read the outlook you'll see four areas of interest. The two new ones are at 10% and 20%.
Member Since: July 7, 2008 Posts: 2 Comments: 3237
1994. SLU 11:45 PM GMT on July 04, 2010    


Looks like it's gonna be "a hell of a year".
Member Since: July 13, 2006 Posts: 11 Comments: 3049
1995. Patrap 11:45 PM GMT on July 04, 2010    
Member Since: July 3, 2005 Posts: 377 Comments: 112939
1996. SiestaCpl 11:45 PM GMT on July 04, 2010    
Quoting Torgen:


Black snakes are awesome! They eat pests, and are beautiful. I haven't seen the one that lives in the vines outside my home office this year, wondering if the hawk in my avatar got him.


hehehe..well it wasn't me even if my Shawnee family name a birth was Redhawk...need them to keep my garden free of unwanteds...
Member Since: June 26, 2008 Posts: 0 Comments: 345
1997. Cavin Rawlins 11:45 PM GMT on July 04, 2010    
Its July 4 right? So 4 circles to celebrate.

BTW, happy independence to you guys in the US of A.
Member Since: July 24, 2005 Posts: 407 Comments: 19076
1998. TampaSpin 11:45 PM GMT on July 04, 2010    
Quoting helove2trac:
show me a four circles i only seen 2 orange and yellow


LOL!!!

Here is 4 circles i posted on my site....on 7-1-10

See where they are at now.....



Member Since: September 2, 2007 Posts: 176 Comments: 19767
1999. Patrap 11:46 PM GMT on July 04, 2010    
I watch the systems,,and area's,

Not the circles.

They just circles.
Member Since: July 3, 2005 Posts: 377 Comments: 112939
2000. Kaydalenascar 11:46 PM GMT on July 04, 2010    
Quoting LADobeLady:
Who in the heck opened up the tropical wave door? I'm going on vacation next week, this is not acceptable!


Me too. To the western tip of Galveston island. Grrrr
Member Since: June 27, 2010 Posts: 0 Comments: 13
2001. Tazmanian 11:46 PM GMT on July 04, 2010    
so is it %20 now that we see 97L?
Member Since: May 21, 2006 Posts: 5089 Comments: 111614

Viewing: 1951 - 2001

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109Blog Index

New Comment
Community Standards Policy Comments will take a few seconds to appear.
Post Your Comments
Please sign in to post comments.
Not only will you be able to leave comments on this blog, but you'll also have the ability to upload and share your photos in our Wunder Photos section.
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.

Community Activity