United States, National Weather Service,

"This paper will focus on the role of jet streaks in this 'off season' tornado outbreak, in an attempt to show that the upper- and lower-level jet streaks were the key elements in producing an environment favorable for tornado development. In section 2, a brief review of jet-streak concepts is presented along with an overview of previous studies relating jet-streaks to the occurrence of severe weather. Section 3 details the relative strength and position of the jet structures at the 300 and 850 mb levels, and provides and analysis of the sounding data. The jet structures are then linked to the formation of an environment favorable for severe weather. A summary is presented in Section 4, along with suggestions for future study"--Introduction

Technical Attachement

Northeastern States

National Weather Service (NWS)