News DetailTornado Watch issued for western KS
Posted At: June 19, 2007 @ 3:08 PM
Posted By: Reed Timmer
Related Categories: Tornadoes
An environment of extreme instability and relatively weak wind shear will be in place over western KS this afternoon/evening, providing the likelihood for supercells. A surface trough/boundary also streatches meridionally across western KS, providing the necessary surface convergence for supercell intiation. Given EXTREME cape and a boundary, the potential exists for a weak tornado or two. Here is the RUC analysis from 19z for 0-1 km EHI (energy-helicity index).
Based on pattern recognition, EHI values of ~2 are marginal for tornadoes...and today, most of this is contibuted by CAPE, since EHI is a composite index of CAPE and helicity. The 0-1 km EHI here is based on 0-1 km CAPE and 0-1 km helicity. We are huge fans of low-level parameters for tornado production, thus the EHI is one of the indices we are most interested in...in addition to 500m - 1 km winds and hodographs.
This southern supercell pictured here produced a supposed tornado about 10 miles W of Hoxie, KS...Based on the radar presentation at the time, this tornado is very believable. Stay tuned for more updates throughout the afternoon. I am still in Alabama, or I'd definitely be chasing this event.
Based on pattern recognition, EHI values of ~2 are marginal for tornadoes...and today, most of this is contibuted by CAPE, since EHI is a composite index of CAPE and helicity. The 0-1 km EHI here is based on 0-1 km CAPE and 0-1 km helicity. We are huge fans of low-level parameters for tornado production, thus the EHI is one of the indices we are most interested in...in addition to 500m - 1 km winds and hodographs.
This southern supercell pictured here produced a supposed tornado about 10 miles W of Hoxie, KS...Based on the radar presentation at the time, this tornado is very believable. Stay tuned for more updates throughout the afternoon. I am still in Alabama, or I'd definitely be chasing this event.
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This is hail!
425 3 WSW KALVESTA FINNEY KS
Over 4 inches! Like grapefruits falling from the sky...glad I just saw rain instead.
4 Inch + is called "Giant" Hail.
But definitly not a pleasant experence.
Erik Here I am starting my chase as soon as i am done writing this. We are heading out to the Ardmore area to get som lightning shots and expience some of the gust front this thing is creating. We would like to head out to Wichita Falls to see the 2 lines merge but lack of time and money is stopping us from doing that. I will have a chase report by afternoon and hopefully some picture if my camera doesn't act up again.