11/12/05 NOW Central Plains

[Ronnie Bradley]

I'm watching it too. The meso looks very rain wrapped on radar. I hope nobody's outside trying to see it :shock:
Beware the HP storm at night!
Other than that, its finally raining outside. Over 35 days without a decent rain and finally we get some.

 

[Ronnie Bradley]

The multicell line of storms that stretch from Garland County up ENE to Faulkner County seen to be presisting or intensifying. The cell in western Garland County in particular seem to have some semi-decent rotation.
I'll be watching carefully...

 

[Brett Adair]

Tornado reported one mile south of Mena.

 

[Andrew Khan]

Ah hah! I new it had to be near Mena, the radar signatures were VERY strong during that time lapse, good to know I was right. I hope, no one was injured and/or killed. It did display a lot of HP characteristics, however, I do not know if in fact it was an HP supercell. It had a very rain wrapped mesocyclone.

 

[Rich Thompson]

Sorry to jump in on this late, but I have a few things to toss in the mix based on earlier posts about the storm environment in IA on Saturday:

1. Winds were 50-80 kt through most of the storm depth, but a large portion of the vertical shear was concentrated in the lowest 1 km. The storm motions were 40-50 kt, resulting in storm-relative winds of 20-45 kt in the mid-upper parts of the storms. Even though the total CAPE was not more than about 1000 J/kg, the shear profiles were fairly typical of "classic" supercells, not super tilted mush piles.

2. Some folks expected a linear convective mode based on winds or shear parallel to the dryline. Well, I came up with a roughly 60 degree angle between the 0-6 km shear vector (oriented toward the NNE) and the dryline in IA (arcing back to the NNW). Also, storm motion was slightly faster than the dryline motion, so storms were able to move off the boundary. The net result will normally be discrete cells in that sort of environment.

Rich T.

 

[Sam Sagnella]

Originally posted by Brett Adair
Tornado reported one mile south of Mena.

In case anyone cares...a damage survey from LZK did in fact confirm a 60 mph F0 with a 3.5 mile path length; damage extended from 1.5 miles NE of Potter to 1.8 miles SW of Mena.

http://kamala.cod.edu/offs/KLZK/0511132220.nous44.html