Dr. Jeff Masters' WunderBlog

An early start to hurricane season?
Posted by: Dr. Jeff Masters, 1:12 PM GMT en Mayo 31, 2011 +7
The Atlantic hurricane season officially begins on Wednesday, June 1, but the Caribbean is already showing signs of the change of seasons. Moisture and heavy thunderstorm activity have increased in the region between Central America and Jamaica in recent days, and rainfall amounts of 1 - 2 inches have been common over the past three days over Cuba, Hispaniola, and much of Central America. The subtropical jet stream has been bringing high wind shear of 30 - 50 knots over the Caribbean the past week, but this shear has fallen to 20 - 40 knots this morning, and is predicted to fall below 20 knots by Thursday. All of the computer models predict that an area of low pressure will form in the region between Jamaica and Honduras by Thursday. This low will have the potential to develop into a tropical depression late this week. There is some dry air over the Western Caribbean near Mexico's Yucatan Peninsula that may retard the process, but a surge of moisture accompanying a tropical wave currently passing through the Lesser Antilles may counteract this, when the wave arrives in the Western Caribbean on Thursday. Water temperatures in the Central Caribbean are about 1°C above average, 29°C, which is plenty warm enough to support development of a tropical storm. Some recent runs of the NOGPAS model have predicted development of a tropical depression by late this week, potentially affecting Jamaica and Eastern Cuba. The other models have not been as gung-ho, but have been showing the potential for a strong tropical disturbance with very heavy rains forming late this week. In any case, residents of Jamaica, Cuba, the Cayman Islands, Haiti, Honduras, and Nicaragua should anticipate the possibility that heavy rains of 2 - 4 inches may affect them Thursday through Saturday this week.


Figure 1. Total precipitable water (a measure of how much rain would fall if we condensed all the water vapor present) for May 31, 2011 at 7am EDT. Plentiful water vapor in the SW Caribbean would create about 2 inches of rain (50 mm, orange colors) if it were all condensed out. Image credit: University of Wisconsin CIMSS.

Receipt did not travel 525 miles from Joplin tornado
The May 22 EF-5 tornado that struck Joplin, Missouri did not set a new record for longest transport of debris by a tornado. According to MSNBC, a couple living in Royal Center, Indiana, in North Central Indiana, 525 miles from Joplin, found a receipt from the Joplin Tire store three days after the tornado hit Joplin. However, a press release from Purdue University clarified that the receipt did not arrive via the tornado, but had been left behind by a relative that had visited Joplin before the tornado. The longest distance recorded for debris from a storm was a cancelled check that traveled 210 miles after the 1915 tornado in Great Bend, Kansas.

The death toll from the May 22, 2011 tornado in Joplin, Missouri is 139, although there is still considerable uncertainty about this number. The Joplin tornado is the 8th deadliest in U.S. history, and the most deadly since the 1947 Woodward, Oklahoma twister that killed 181 people. The tornado season of 2011 now has approximately 520 deaths, which would make it the deadliest tornado season since 1936, according to statistics compiled by NOAA. In the 1936 tornado season 552 people died, mostly because of violent tornadoes that hit Tupelo Mississippi (216 killed), and Gainesville, Georgia (203 killed.)


Figure 2. Satellite image taken at 23:45 UTC (7:45pm EDT) May 22, 2011, showing the line of tornadic thunderstorms that spawned the Joplin tornado. Image credit: NOAA Visualization Laboratory.

Jeff Masters
Joplin, MO (Portlight)
Joplin, MO
Categories: Tornado Hurricane
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951. EYEStoSEA 10:56 PM GMT en Mayo 31, 2011    
Quoting TropicalAnalystwx13:


How do you know its a blobette? Maybe it wants to be a blob.


LOL, good one TropA13,....and hello there Grothar, scorcher here today...still dry as ever there?
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953. TropicalAnalystwx13 10:57 PM GMT en Mayo 31, 2011    
[big] blah blah blah [/big]

The brackets are actually these: < and there are no spaces.
Member Since: Julio 6, 2010 Posts: 89 Comments: 25274
954. KoritheMan 10:57 PM GMT en Mayo 31, 2011    
You guys have probably already seen this, so pardon me. But I've just recently been able to get on. 12z CMC favors a steering pattern that takes this system into the northern Gulf Coast:



Notice the very progressive upper pattern over the United States, with a deep-layered trough over the central to high plains advancing eastward, along with a rebuilding of the western Atlantic ridge to the east in the wake of another strong trough near Bermuda.

Of course, I've yet to see any sort of actual consistency with the models regarding any track type scenario, but still, food for thought.
Member Since: Marzo 7, 2007 Posts: 408 Comments: 15429
956. TropicalAnalystwx13 11:00 PM GMT en Mayo 31, 2011    
Quoting KoritheMan:
You guys have probably already seen this, so pardon me. But I've just recently been able to get on. 12z CMC favors a steering pattern that takes this system into the northern Gulf Coast:



Notice the very progressive upper pattern over the United States, with a deep-layered trough over the central to high plains advancing eastward, along with a rebuilding of the western Atlantic ridge to the east in the wake of another strong trough near Bermuda.

Of course, I've yet to see any sort of actual consistency with the models regarding any track type scenario, but still, food for thought.


That's how I think it will track.
Member Since: Julio 6, 2010 Posts: 89 Comments: 25274
957. KEEPEROFTHEGATE (Mod) 11:01 PM GMT en Mayo 31, 2011    
WELCOME 2011 HURRICANE SEASON WE ARE OFFICIAL NOW GMT TIME
Member Since: Julio 15, 2006 Posts: 143 Comments: 40476
958. RukusBoondocks 11:01 PM GMT en Mayo 31, 2011    
Wow we could have a cat 2 in the gulf this early in the season yikes!!!!
Member Since: Febrero 13, 2011 Posts: 0 Comments: 294
959. GeoffreyWPB 11:01 PM GMT en Mayo 31, 2011    
Quoting Grothar:


Hey, 79 and 80 are our lines. Think we will finally get some rain?


I hope so, but I’m not holding my breath.
Member Since: Septiembre 10, 2007 Posts: 0 Comments: 9117
961. OrchidGrower 11:01 PM GMT en Mayo 31, 2011    
Wow - What's with TWC's forecasts for us here in SW Florida? Two days in a row, forecasted for 50/50 chance of T-showers, then each afternoon the wind starts roaring out of the northeast, the air gets dry, and the few pitiful clouds that are around can't seem to do squat.

Sure hope that blob approaching from the Atlantic will blossom into something much larger -- and that the nearby upper-level low isn't going to keep it away from us or tear it apart.

Does anyone know if the blob in the Atlantic is supposed to cross Northern Florida, or Central, or - ? And where is the Florida-Straits upper-level low headed? BTW, I'm afraid to get excited about the low in the Caribbean, as I'm so sure it'll get snatched out into the Atlantic without hitting us here in SW Florida.

Living for the day we finally get to rainy season....
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962. NRAamy 11:02 PM GMT en Mayo 31, 2011    
PurpleDrank, you are so banned.
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963. TropicalAnalystwx13 11:02 PM GMT en Mayo 31, 2011    
Quoting KEEPEROFTHEGATE:
WELCOME 2011 HURRICANE SEASON WE ARE OFFICIAL NOW GMT TIME


This calls for the chart, the shower curtain, and the hebert boxes.
Member Since: Julio 6, 2010 Posts: 89 Comments: 25274
964. NICycloneChaser 11:02 PM GMT en Mayo 31, 2011    
Quoting KoritheMan:
You guys have probably already seen this, so pardon me. But I've just recently been able to get on. 12z CMC favors a steering pattern that takes this system into the northern Gulf Coast:



Notice the very progressive upper pattern over the United States, with a deep-layered trough over the central to high plains advancing eastward, along with a rebuilding of the western Atlantic ridge to the east in the wake of another strong trough near Bermuda.

Of course, I've yet to see any sort of actual consistency with the models regarding any track type scenario, but still, food for thought.


I'd think about this intensity seriously if the CMC didn't make everything a hurricane. Though the UKMET seems to lend a second opinion to the track idea, so it's a possibility.
Member Since: Agosto 10, 2010 Posts: 2 Comments: 1957
966. KoritheMan 11:04 PM GMT en Mayo 31, 2011    
Quoting TropicalAnalystwx13:


That's how I think it will track.


Well it's a bit too early to judge the strength and amplitude of the trough meteorologically. As we get closer in time, we will have a better idea as to the eventual outcome.
Member Since: Marzo 7, 2007 Posts: 408 Comments: 15429
967. NICycloneChaser 11:04 PM GMT en Mayo 31, 2011    
Quoting TropicalAnalystwx13:


This calls for the chart, the shower curtain, and the hebert boxes.




The what?
Member Since: Agosto 10, 2010 Posts: 2 Comments: 1957
968. sunlinepr 11:04 PM GMT en Mayo 31, 2011    
Member Since: Agosto 2, 2010 Posts: 19 Comments: 8445
969. KoritheMan 11:04 PM GMT en Mayo 31, 2011    
Quoting RukusBoondocks:
Wow we could have a cat 2 in the gulf this early in the season yikes!!!!


Don't spread misinformation.
Member Since: Marzo 7, 2007 Posts: 408 Comments: 15429
970. KEEPEROFTHEGATE (Mod) 11:04 PM GMT en Mayo 31, 2011    
Quoting RukusBoondocks:



YEEEEHAWWWWWW TIME TO GO CRAZY!!!!!!!!!! LOVE THIS TIME OF YEAR!!!!!!! TH EXCITEMENT OF BEING UNDER A HURRICANE WARNING DRIVES ME NUTS!!!!!!!!!!! AND TRACKING A HUGE CAT 4 COMING INTO THE GULF MAKES ME CRY WITH JOY!!!!!!!!!!!!!
rufus stop being a dufus
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972. KoritheMan 11:05 PM GMT en Mayo 31, 2011    
Gotta go for now guys. Be back this evening.
Member Since: Marzo 7, 2007 Posts: 408 Comments: 15429
973. RukusBoondocks 11:05 PM GMT en Mayo 31, 2011    
Quoting KEEPEROFTHEGATE:
rufus stop being a dufus


BUT IM EXCITED!!!!!!
Member Since: Febrero 13, 2011 Posts: 0 Comments: 294
974. TropicalAnalystwx13 11:06 PM GMT en Mayo 31, 2011    
Quoting KoritheMan:


Well it's a bit too early to judge the strength and amplitude of the trough meteorologically. As we get closer in time, we will have a better idea as to the eventual outcome.


yup
Member Since: Julio 6, 2010 Posts: 89 Comments: 25274
975. Hurricanes12 11:06 PM GMT en Mayo 31, 2011    
Quoting KoritheMan:


Don't spread misinformation.


Exactly.

We are relying too much on model guidance when the storm hasn't even been tagged as an invest.

The models have changed greatly throughout the days. I'd wait till a defined low pressure is shown and at least till the storm becomes an invest.
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976. Patrap 11:06 PM GMT en Mayo 31, 2011    
Member Since: Julio 3, 2005 Posts: 370 Comments: 111297
977. WeatherNerdPR 11:07 PM GMT en Mayo 31, 2011    
Quoting TropicalAnalystwx13:


This calls for the chart, the shower curtain, and the hebert boxes.

You said the C word!
Member Since: Julio 7, 2010 Posts: 0 Comments: 5464
979. Tropicsweatherpr 11:07 PM GMT en Mayo 31, 2011    
Quoting KoritheMan:
You guys have probably already seen this, so pardon me. But I've just recently been able to get on. 12z CMC favors a steering pattern that takes this system into the northern Gulf Coast:



Notice the very progressive upper pattern over the United States, with a deep-layered trough over the central to high plains advancing eastward, along with a rebuilding of the western Atlantic ridge to the east in the wake of another strong trough near Bermuda.

Of course, I've yet to see any sort of actual consistency with the models regarding any track type scenario, but still, food for thought.


I think UKMET has been the most consistent model so far having this.
Member Since: Abril 29, 2009 Posts: 64 Comments: 8148
980. NICycloneChaser 11:07 PM GMT en Mayo 31, 2011    
Quoting WeatherNerdPR:

You said the C word!


ALL HAIL THE CHART
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981. KEEPEROFTHEGATE (Mod) 11:08 PM GMT en Mayo 31, 2011    
Quoting RukusBoondocks:


BUT IM EXCITED!!!!!!
i know but we got 182 days of excitment to go you dont want to be burned out in the first 10 days
Member Since: Julio 15, 2006 Posts: 143 Comments: 40476
982. Hurricanes12 11:08 PM GMT en Mayo 31, 2011    
Quoting PurpleDrank:


do you think it will hit New Orleans?


Not sure if this is a serious question, but there is no way that any human can answer that question at this time, lol.
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983. NRAamy 11:08 PM GMT en Mayo 31, 2011    
PurpleDrank, why do you hate New Orleans??
Member Since: Enero 24, 2007 Posts: 315 Comments: 31937
984. Grothar 11:09 PM GMT en Mayo 31, 2011    
Quoting PensacolaDoug:
Hi all.


Have you seen the blobs?
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985. RukusBoondocks 11:09 PM GMT en Mayo 31, 2011    
well ok
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986. presslord 11:09 PM GMT en Mayo 31, 2011    
Quoting KEEPEROFTHEGATE:
i know but we got 182 days of excitment to go you dont want to be burned out in the first 10 days


Why ever not?!?!?!?!?! The rest of us will be...
Member Since: Agosto 13, 2007 Posts: 0 Comments: 10377
987. Hurricanes12 11:10 PM GMT en Mayo 31, 2011    
Quoting RukusBoondocks:
well ok


We still love you. ;)
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988. TropicalAnalystwx13 11:10 PM GMT en Mayo 31, 2011    
Quoting Grothar:


Have you seen the blobs?


So IT IS a blob.

You seem to be changing your story...which is it? :S
Member Since: Julio 6, 2010 Posts: 89 Comments: 25274
989. presslord 11:10 PM GMT en Mayo 31, 2011    
Quoting Hurricanes12:


Not sure if this is a serious question, but there is no way that any human can answer that question at this time, lol.



You seriously underestimate the special Powers of the Blog!!!!!!
Member Since: Agosto 13, 2007 Posts: 0 Comments: 10377
990. tropicfreak 11:11 PM GMT en Mayo 31, 2011    
Quoting Grothar:
Not as impressive as before. Have to wait for a little more banding. Notice how the inflow is beginning to increase, though. Pressures do not seem to be dropping, so we may have to wait a bit.



Circulation is more evident too.
Member Since: Septiembre 2, 2006 Posts: 110 Comments: 6566
991. Grothar 11:11 PM GMT en Mayo 31, 2011    
Quoting EYEStoSEA:


LOL, good one TropA13,....and hello there Grothar, scorcher here today...still dry as ever there?


Not hot, but still very dry. Not a drop. How you been EYES?
Member Since: Julio 17, 2009 Posts: 56 Comments: 19515
992. Hurricanes12 11:11 PM GMT en Mayo 31, 2011    
Quoting presslord:



You seriously underestimate the special Powers of the Blog!!!!!!


You have some special powers too that I cannot fathom. ;D
Member Since: Junio 21, 2010 Posts: 0 Comments: 528
993. Patrap 11:12 PM GMT en Mayo 31, 2011    

My my, hey hey
Rock and roll is here to stay
It's better to burn out
Than to fade away
My my, hey hey.

Out of the blue and into the black
They give you this, but you pay for that
And once you're gone, you can never come back
When you're out of the blue and into the black.

The king is gone but he's not forgotten
This is the story of a johnny rotten
It's better to burn out than it is to rust
The king is gone but he's not forgotten.

Hey hey, my my
Rock and roll can never die
There's more to the picture
Than meets the eye.
Hey hey, my my.
Member Since: Julio 3, 2005 Posts: 370 Comments: 111297
994. Grothar 11:12 PM GMT en Mayo 31, 2011    
Quoting tropicfreak:


Circulation is more evident too.


Yes, I notice it every time I start walking around. It helps a lot.

Or are you referring to one of the blobs.
Member Since: Julio 17, 2009 Posts: 56 Comments: 19515
995. TropicalAnalystwx13 11:13 PM GMT en Mayo 31, 2011    
Member Since: Julio 6, 2010 Posts: 89 Comments: 25274
996. presslord 11:13 PM GMT en Mayo 31, 2011    
Quoting Grothar:


Yes, I notice it every time I start walking around. It helps a lot.

Or are you referring to one of the blobs.


OK...I don't care who ya are....THAT'S funny....
Member Since: Agosto 13, 2007 Posts: 0 Comments: 10377
998. FrankZapper 11:16 PM GMT en Mayo 31, 2011    
Quoting RukusBoondocks:


BUT IM EXCITED!!!!!!
Time to take your medication
Member Since: Mayo 26, 2011 Posts: 0 Comments: 1193
999. Tazmanian 11:16 PM GMT en Mayo 31, 2011    
at last what took so long admins JFV is now banned and lock up
Member Since: Mayo 21, 2006 Posts: 5088 Comments: 111338
1000. Grothar 11:17 PM GMT en Mayo 31, 2011    
Quoting TropicalAnalystwx13:


So IT IS a blob.

You seem to be changing your story...which is it? :S



Blob and blobette do not refer to gender, but to size. A blobette is a small blob.
Member Since: Julio 17, 2009 Posts: 56 Comments: 19515
1001. turtlegirl9 11:17 PM GMT en Mayo 31, 2011    
ok. I know I'm a novice at this but the wind shear over the blobette (east of Georgia) is only 5-10 kts with nothing above 20 kts before Florida


and the water temperatures are at least borderline. What am I missing?
Member Since: Agosto 13, 2009 Posts: 0 Comments: 16

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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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