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Severe WX Severe Weather Event 3/28/17-3/31/17 (2 Viewers)


Kory

Member
Messages
2,879
Location
Tuscaloosa, Alabama
After this weekend's occluded trough kicks out, we're going to have a few days of return flow and atmospheric recovery with a flow out of the Gulf. All models are indicating a large scale trough ejecting from the Plains into the MS Valley Wednesday into Thursday. Latest trend in the models have kept this thing more of an open trough, which is more favorable for severe wx. It looks to begin over the Southern Plains and Ark/La/Tex Wednesday as a significant trough digs into the Southern Plains and surface low cyclogenesis takes place lee side of the Rockies.

Euro and GFS both show a loaded warm sector, but exact trough evolution is still unclear. Either way, it's going to be stormy to close out this coming week.


 

Kory

Member
Messages
2,879
Location
Tuscaloosa, Alabama
Trough evolution is part of that. I have pay site available to Euro maps and its showing CAPE values in excess to 1500 J/KG up to the AL/TN border....

UKMET and Euro are very similar, which is a reliable combo to have. GFS seems to be playing catch up, but has had some large variability run to run.
 

PerryW

Member
Honorary Meteorologist
Messages
144
Location
Wilsonville, Oregon
Special Affiliations
SKYWARN® Volunteer
Am concerned Thursday could be a very active/ serious day from KY/TN southward to AL / LA/ MS. A good friend who's an experienced met is very concerned there could be a tornado outbreak from late Wed thru Thurs/ Thur night across the deep south.
 

Kory

Member
Messages
2,879
Location
Tuscaloosa, Alabama
One caveat for Thursday's threat for places further east will be the possibility of a Gulf convective complex which could cut off best northward moisture transport...
 
Messages
331
Location
Madison, WI
Looks like they're not going to introduce a 15% tornado risk right now.
Rightfully so. Too many potential flies in the ointment with early convection, some degree of VBV wind profiles and the duration/extent that favorable (discrete supercell) convective mode will overlap with the most favorable parameter space.
 

GTWXAlum

Member
Messages
57
Location
Atlanta, GA
One caveat for Thursday's threat for places further east will be the possibility of a Gulf convective complex which could cut off best northward moisture transport...
Fwiw, latest GFS is much more aggressive than the Euro with respect to coastal convection on Thursday. If the Euro is right, then seemingly the inland threat would be much more substantial.
 

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