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Severe weather outbreak possible on St. Patrick's Day!

Posted At: March 11, 2008 @ 10:22 AM
Posted By: Reed Timmer
Related Categories: Tornadoes
A strong vorticity maximum is forecast to amplify over the Rocky Mountain Region and eject east across the Plains on Monday, March 17.  Model runs over the past few days have been very consistent with the timing and strength of this feature, so confidence is high that severe weather will develop somewhere across the Southern Plains east to the MS River Valley early next week.  A strong low-level jet will develop ahead of this vort max, which will transport Gulf moisture northward and generate favorable low-level shear for tornadoes in the warm sector.  The only possible limiting factor for severe weather with this system is the quality of the moisture return, especially for the Southern Plains, with dewpoints struggling to make the 50F mark.   Stay tuned for updates...

Entry Comments

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Heidi | March 11, 2008 @ 11:09 AM #

Hey! You jumped ahead of this weekend. Fri-Sun looks like trouble for the plains through the Carolinas! =-O

I think you just want to chase on St. Patrick's Day, Reed! ;)

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By bob | March 11, 2008 @ 11:42 AM #

even if you did chase on saint Patricks day, you would probobly get in a wreck with a drunk driver on the way back home.

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Sam | March 11, 2008 @ 11:56 AM #

Should be fun to see how this thing ejects out onto the plains. I personally prefer the GFS solution with possible cold-core setup in KS come Monday, but like brett said in the forums, ECMWf solution of holding it back may allow for better moisture return.

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Jake (in TN) | March 11, 2008 @ 1:35 PM #

ahh.. I love the smell of Spring (-time storms) in the morning ;)
looks like Friday might be interesting as well
http://www.spc.noaa.gov/products/exper/day4-8/

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Zack | March 11, 2008 @ 3:20 PM #

Yeah, me and Donny have been watching and discussing this as well... looks like it has a lot of potential!! WOOHOO St. Patricks Day chase:P

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Corey | March 11, 2008 @ 4:15 PM #

This has the potential to be catastrophic. A lethal combination of severe weather, a celebration of my heritage, and Reeds birthday all augmented by the availability of copious amounts of booze and a temporary suspension of the societal taboo against drinking in the AM. All this, plus its happening over spring break. Good god, this is going to be nuts.

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Stephanie | March 11, 2008 @ 5:02 PM #

OMG I can't wait.

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Donny | March 11, 2008 @ 6:19 PM #

first things first guys and galls- we still have to get threw the severe potential friday first

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Corey | March 11, 2008 @ 7:32 PM #

Reed, I expect significant hail damage to the Tahoe by next Wednesday at the latest.

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By KalinWiebeMedHat | March 11, 2008 @ 10:00 PM #

Check this out, what am I looking at here, just some heavy rain?

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By bob | March 11, 2008 @ 10:10 PM #

from what the top of the radar screen tells me, looks like heavy snow. up to 20 cm an hour.

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By jeri | March 11, 2008 @ 10:25 PM #

And of course it looks like it'll dump snow up in the north. Just when we actually were above freezing finally yesterday and to the surprise of many here, the temp was about 42F today. But of course it's still winter despite being March, so we'll have to see.

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Donny Cook | March 11, 2008 @ 10:56 PM #

some please tell me i am dreaming
http://beta.wxcaster.com/NAMSevereArchive.php?datetime=2008031200Z&fcsthour=75&type=0-1KM_EHI

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By jim ferguson | March 12, 2008 @ 12:24 AM #

Looking forward to chasing with Reed this spring on the extreme chase tours! Hope to meet some of you from this board. I cant take off from work for a long period of time so I am planning on chasing last minute when the conditions are "right".

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Brett (another one) | March 12, 2008 @ 11:05 AM #

right now, Im looking at the small potential for the chicago area for either severe storms or two heavy snowstorms, heres why. If you watch the later protion of the loop, you can see that the line of red disapates into two lines, which all seem to hit Chicago.. Hopefully there gonning to turn out as severe storms!

Happy stormchasing!

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Jake (in TN) | March 12, 2008 @ 11:46 AM #

What am I looking at Donny? I've never seen that before.

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By MynameisBen | March 12, 2008 @ 1:29 PM #

Jake i believe that is the EHI(Ehanced helicity Index) values from the sfc to 1km high....and the 7.3 which is a very high number is basically on top of Little Rock AR i believe.

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By MynameisBen | March 12, 2008 @ 1:30 PM #

You know i though "ehanced" looked weird...Now i figured it out...i meant Enhanced*

Haha.

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Donny | March 12, 2008 @ 2:16 PM #

you got it ben-gotta love the energy helicity index- you know in all seriousness- i hate saying this so pardon me- i think we should disregard what the gfs model has been showing- it has been very inconsistant handling this upcomming severe weather threat friday/saturday as far as wind speeds go- while the euro model and wrf model has been handling it very good- and that what i want to point out is that to be an ace at severe storms- you have to choose what the best model solution is- and that includes how consistant each and every model run is

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By JY | March 12, 2008 @ 5:16 PM #

Corey your forget to add a certain someone will be in town!

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By AJ | March 12, 2008 @ 5:21 PM #

Ah hah! I knew I'd see something in March! It's a good month so far. haha. I'd love to chase anything relatively close... hopefully I get the chance next Monday.

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Jake (in TN) | March 12, 2008 @ 5:24 PM #

ahh, ok, ty guys :)
I'm still holding out hope though, the SPC is saying we've got good conditions for Supercells out here. I'd love to see one of those in the daytime

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Jason Young | March 12, 2008 @ 9:03 PM #

What do ya'll think of the slight risk area for tomarrow

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Jake (in TN) | March 13, 2008 @ 9:05 AM #

Well Jason, right now it's looking pretty good over the Arkansas/Oklahoma border, and into the very NE corner of Texas. And looking decent over Eastern portions of Texas and Oklahoma, and most of Arkansas and Louisiana

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By bob | March 13, 2008 @ 9:30 AM #

looking good for Monday/Tuesday: http://www.spc.noaa.gov/products/exper/day4-8/

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Jason Young | March 13, 2008 @ 12:50 PM #

I feel there may be a couple spin up's , but I think I will hold off til Monday. Plus we have a LARGE wild fire to are west that has been burning for 24 hour's now. ( media say it's out, very funny)

Severe weather outbreak possible on St. Patrick's Day! Comment Posted By Nathan | March 14, 2008 @ 8:16 PM #

I am here in Chattanooga, TN and they are predicting us to get pounded pretty good. What is the word from this source? I find this website is a lot more accurate than a lot of the news stations in the area.

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