Archive for October 7th, 2009

There appears to be growing concern that portions of Arkansas could go under the gun later tomorrow afternoon once daytime heating takes place over the area. The North American Model (NAM) indicates that Energy-Helicity Index values reach above 3 tomorrow. This index is based on the amount of instability and shear in the area. Values above 1 in the 0-1km level indicate potential for tornadoes. We plan to monitor things tonight and see how the SPC feels about the threat before deciding on deployment early in the morning. At this point, it looks like a pretty decent threat could be setting up for the Pocahontas – Jonesboro – Earle region. Stay tuned…

Chase potential :  MODERATE

Brett Adair