TAMDAR Discussion Board

TAMDAR caught low level cold layer

Posted By: Lyle Alexander
Date: 24-April-05 2222Z

On Friday, April 22nd, a strong low pressure system was over Indiana. Cold air was rushing southward over Illinois in the wake of the low. TAMDAR data over central IL showed temperatures approaching the freezing mark at around 3 to 5 thousand feet in the late afternoon, several hours earlier than the models had forecasted. RUC2 based on TAMDAR had some reflection of this colder layer. By 00Z, the sounding at ILX had a layer of below freezing temperatures from 3900 to 5100 feet. Lyle