Vortex2 tornado study finally gets some twisters to study

By: Dr. Jeff Masters , 1:56 PM GMT on June 08, 2009

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A proven way to reduce the incidence of dangerous weather phenomena is to schedule a multi-million dollar field experiment to study the phenomena. Up until this past weekend, that has certainly been true of this year's $10 million Vortex2 tornado study. The 7-week study (which also runs next year) has deployed an armada of over 100 storm chasing vehicles across the Great Plains this Spring, but has largely been frustrated by an exceptionally quiet tornado season. Tornado activity in May was less than half of what was observed last year in May, thanks to a ridge of high pressure that has dominated the weather. The residents of Tornado Alley ran out of luck over the weekend, though, as a strong low pressure system and associated cold front brought severe weather and multiple tornadoes to the region. Sixteen tornado reports were received by NOAA's Storm Prediction Center yesterday, and three on Friday. The team of University of Michigan students that has been writing our featured Vortex2 blog caught some excellent pictures of tornadoes on both Friday and Sunday. Yesterday was probably the last best chance for the Vortex2 project to document a strong tornado, since the project ends this Saturday and no significant tornado outbreaks appear likely for the remainder of this week.

Aurora, Colorado tornado yesterday
A tornado with a 3/4 mile wide debris cloud swept through Aurora, Colorado yesterday, staying on the ground for 8 - 11 miles and damaging a shopping mall, but causing no deaths or injuries. The tornado passed close to one of the high-resolution Terminal Doppler Weather Radars (TDWRs) that we now feature on our web site (see the radar FAQ for more details on these great new additions to our radar offerings). Posted below are the reflectivity and Doppler velocity images from the tornado, showing the amazing fine-scale details these high-resolution radars offer.



Figure 1. Radar reflectivity (top) and Doppler velocity (bottom) from the Denver, Colorado Terminal Doppler Weather Radar (TDWR), which caught the classic signature of a supercell thunderstorm tornado over Aurora, Colorado. A tornado dropped down from the low-level mesocyclone inside the parent supercell thunderstorm at the time of these images. Yellow colors located right next to greens/blues indicate that winds are moving towards and away from the radar in close proximity, the signature of strong rotation at low levels. Also visible on the plot are the winds spreading out from a downdraft on the rear side of the tornado. Black arrows denote the direction of wind flow. The dryline was bent back into a E-W orientation near Denver, creating an area of moisture convergence, which triggered thunderstorm formation.

Western Caribbean disturbance unlikely to develop this week
As area of disturbed weather over the Western Caribbean has brought rains of 2 - 3 inches over portions of Nicaragua and Honduras over the past few days. Wind shear is a high 20 - 30 knots over the disturbance, and no computer models are indicating that the disturbance will develop this week.

Jeff Masters, with help from wunderground's tornado expert, Dr. Rob Carver

Dying out after an official 24 minutes on the ground
Tornado (Fungus)
Tornado
Twisted (rrose1)
This was taken approximately 30 minutes after a brief tornado passed through South Hutchinson, KS tonight. The building is a bus manufacturing facility.
Twisted

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Quoting Drakoen:


You didn't need a period after incorrect. You could have just used a semicolon since it's in direction relation to the previous independent clause.


So in other words, you can use a semicolon instead of a period when two independent clauses are placed side by side?
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1536. Drakoen
Quoting DestinJeff:
Drakoen, please provide feedback on this statement:

You sentence punctuation is messed up.


It's the Italian
Member Since: October 28, 2006 Posts: 57 Comments: 29883
Just let it be noted...
it is not women of the blog who write this 'As The Wind Blows' soap opera script.

Amended: Or should I say, who provide the drama for 'As the Wind Blows'
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Slowly into madness the blog descends.

Without anything tropical to talk about, the blog version of cabin fever sets in...
Member Since: September 22, 2005 Posts: 18 Comments: 2309
1532. Drakoen
Quoting futuremet:


Thanks Drak, correct me each time grammar is incorrect. This is quite beneficial.


You didn't need a period after incorrect. You could have just used a semicolon since it's in direct relation to the previous independent clause.
Member Since: October 28, 2006 Posts: 57 Comments: 29883
Quoting Drakoen:


There you go again. It is: "Draky, it takes practice; at least I am trying." "Draky, it takes practice is an independent clause and so it "at least I am trying."


Thanks Drak, correct me each time grammar is incorrect. This is quite beneficial.
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1530. Drakoen
Quoting futuremet:


lol

Draky, it takes practice, at least I am trying.


There you go again. It is: "Draky, it takes practice; at least I am trying." "Draky, it takes practice" is an independent clause and so it "at least I am trying."
Member Since: October 28, 2006 Posts: 57 Comments: 29883
1529. Drakoen
Yea, I noticed that too Levi.
Member Since: October 28, 2006 Posts: 57 Comments: 29883
I think I've sighted MC Grammar.

Member Since: September 22, 2005 Posts: 18 Comments: 2309
99 bottles of beer on the wall, 99 bottles of beer...

...oh wait, wrong blog. ;)

17 days till we move...anyone want to come help and pack?

Just glad nothing coming this way right now although our house is not sold yet. Wondering if the northern route or southern route is the more safe route still.
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Quoting Drakoen:


You sentence punctuation is messed up. It should say: However, I have no intention on having enmity with anyone in the blog; for we are all brothers, the meterological elite of internet weather. "I have not intention on having enmity with anyone in the blog is an independent clause. "For we are all brothers, the meteorological elite of internet weather has an independent clause and a subordinate clause.


lol

Draky, it takes practice, at least I am trying.
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1525. Levi32
00z NAM is going against the trend its had for the last 2 days. It no longer forms a cut-off low as the TUTT pulls out. Instead it leaves behind a weak open trough and the main trough lobe exits to the NE.

Member Since: November 24, 2005 Posts: 635 Comments: 26547
hello everyone. it's been a while since i've stopped by. interesting results to the poll. there are more people who think like me than i previously thought.

are y'all calling drak a cyber bully? I'm not able to follow the current drama.
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I've been reading this board for quite a few seasons now.... and this "JFV" drama never ceases to amaze me
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1522. Drakoen
Quoting futuremet:
"A smart man recognizes his ignorance"

All of us can be dogmatic at times and fail to recognize our ignorance.

This JFV WS PE situation has caused too much of a hysterical mood on this blog. WS, don't ever think I will forget when you sent me trollish comments on Youtube when I was banned a month ago. However, I have no intention on having enmity with anyone in this blog, for we are all brothers; the meteorological elite of internet weather blogging. WS, I now have nothing against you because finally admitted you truly are.


You sentence punctuation is messed up. It should say: However, I have no intention on having enmity with anyone in the blog; for we are all brothers, the meterological elite of internet weather. "I have not intention on having enmity with anyone in the blog is an independent clause. "For we are all brothers, the meteorological elite of internet weather has an independent clause and a subordinate clause.
Member Since: October 28, 2006 Posts: 57 Comments: 29883
1521. KEEPEROFTHEGATE (Mod)
its almost a nightmare and drak and jfv are the boogy men
Member Since: July 15, 2006 Posts: 169 Comments: 53296
We should try to resolve this instead of incessantly blaming one another.
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1519. KEEPEROFTHEGATE (Mod)
Quoting Drakoen:
LOL cyber bully!
maybe a little too harsh but still the only one your making a fool out of is yourself
Member Since: July 15, 2006 Posts: 169 Comments: 53296
Such a soap opera...

Or was it all just a dream?!?

Member Since: September 22, 2005 Posts: 18 Comments: 2309
1517. KEEPEROFTHEGATE (Mod)
gord
we are all different yet the same
Member Since: July 15, 2006 Posts: 169 Comments: 53296
"A smart man recognizes his ignorance"

All of us can be dogmatic at times and fail to recognize our ignorance.

This JFV WS PE situation has caused too much of a hysterical mood on this blog. WS, don't ever think I will forget when you sent me trollish comments on Youtube when I was banned a month ago. However, I have no intention on having enmity with anyone in this blog, for we are all brothers; we are the meteorological elite of internet weather blogging. WS, I now have nothing against you because finally admitted who you truly are.
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1515. Drakoen
LOL cyber bully!
Member Since: October 28, 2006 Posts: 57 Comments: 29883
Yeah Keeper I just posted that to try and create some excitement,because the opposite of what I post usually happens.But I have learned a lot by making a guess and watching you guys say something different and founding out why you are usually right, do to the many links and information that you'll provide.
Member Since: August 18, 2008 Posts: 0 Comments: 3112
1513. KEEPEROFTHEGATE (Mod)
he is tryin to make you look like a fool but the only fool is himself for acting the way he has been by keeping this going and continues to do so its gettin kinda old for a while now
Member Since: July 15, 2006 Posts: 169 Comments: 53296
1511. KEEPEROFTHEGATE (Mod)
it is un-becoming ws he is smart but maybe too smart for is own dam good
Member Since: July 15, 2006 Posts: 169 Comments: 53296
1509. KEEPEROFTHEGATE (Mod)
Quoting gordydunnot:
Looks like will have to talk about Vortex 2 the next few days. The only thing out there now is the blob east of the Bahamas, and that looks like its got a fish hook in it.
yep but things can and will change not a matter of if but when
Member Since: July 15, 2006 Posts: 169 Comments: 53296
Looks like will have to talk about Vortex 2 the next few days. The only thing out there now is the blob east of the Bahamas, and that looks like its got a fish hook in it.
Member Since: August 18, 2008 Posts: 0 Comments: 3112
1505. Seastep
Quoting hahaguy:

Don't drink the water in Mexico.


You're the best haha.

Love the dry humor and it fits your avatar to a tee.
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Quoting StormW:


Don't focus on the skinny black line.
Indeed! ;)
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1502. Ossqss
Quoting Drakoen:
It seems we have a philosopher in the blog...


Testing, testing, Rule #1

Member Since: June 12, 2005 Posts: 6 Comments: 8185
Quoting Ossqss:


If you don't give someone the power to bother you, they can't !
Oh yes... I remember now.
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1496. Drakoen
It seems we have a philosopher in the blog...
Member Since: October 28, 2006 Posts: 57 Comments: 29883
1495. Ossqss
Quoting KEHCharleston:
What is rule #1?


If you don't give someone the power to bother you, they can't !



I appologize to the blog, but there were many things done that justified what happened in the past. History is know by those affected.
Member Since: June 12, 2005 Posts: 6 Comments: 8185
1494. hahaguy
Quoting Drakoen:


Don't go to Mexico...period


True , you'll get killed by the cartels
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Quoting StormW:


you're welcome!

Don't feel bad...happens to me a lot!!


Sorry about that Storm I miss read that post and thought you were the one having trouble....

My Bad. I will pay a little more attention here...

Taco :0)
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1492. Drakoen
Quoting hahaguy:

Don't drink the water in Mexico.


Don't go to Mexico...period
Member Since: October 28, 2006 Posts: 57 Comments: 29883
1491. KEEPEROFTHEGATE (Mod)
Quoting AussieStorm:

When did I post that Keeper?
It wasn't today.
June 1st is the start of winter here.
your not even in the dead of winter yet aussie thats what i mean friend
Member Since: July 15, 2006 Posts: 169 Comments: 53296
1490. hahaguy
Quoting KEHCharleston:
What is rule #1?

Don't drink the water in Mexico.
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Quoting Ossqss:


Rule of thumb #2
If you always tell the truth, you never have to remember what you said.

What is rule #1?
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Quoting StormW:


To set the time:
1. In Clock Display Mode, press and hold MODE for
2 seconds.
2. To change the setting, press or .
3. Press MODE to confirm and move onto the next
setting.
4. The setting sequence is 12 / 24 hour format, hour,
minute, year, month-date format, month, day and
day of the week language (English, French or
Spanish)



Storm!
Thanks!!! I was totally over thinking that
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About

Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.