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Synoptic Analysis of the Tornado and Derecho Climatology of Ohio from 1963-2002

Walls, Kristin Ashley
http://rave.ohiolink.edu/etdc/view?acc_num=osu1250265230

Abstract Details

2009, Master of Science, Ohio State University, Atmospheric Sciences.
The synoptic conditions associated with significant tornadoes and derechoes in Ohio were analyzed to help forecasters improve future predictions. Eleven significant tornado events and five derecho events from 1963 – 2002 were evaluated at the time closest to the event and composites made 6, 12, 18, and 24 hours prior along with 6 and 12 hours after the event to observe the changes that occurred. NCEP reanalysis data were gathered from the Climate Diagnostic Center. The variables used were air temperature, sea level pressure, geopotential height, specific humidity, omega, u-wind, v-wind, surface lifted index, and relative vorticity. The synoptic conditions of the significant tornado events were compared with the synoptic conditions of the derecho events to determine which variables played key roles in why each of these events occurred. The results found in this study for the tornado composite were very similar to previous research. During the time of the event for the tornado composite, the left exit region of a jet streak was located over the study area. The flow aloft was found to be from out of the southwest and the lifted index was negative. For the derecho composite, the lifted index was more negative than the tornado composite. One surprising find in this study was that no jet streak was present throughout the entire event for the derecho composite.
Bryan Mark, Dr. (Advisor)
Jeffery Rogers, Dr. (Committee Member)
Jay Hobgood, Dr. (Committee Member)
162 p.
Atmosphere
tornado; derecho; Ohio; severe weather

Recommended Citations

Citations

  • Walls, K. A. (2009). Synoptic Analysis of the Tornado and Derecho Climatology of Ohio from 1963-2002 [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250265230

    APA Style (7th edition)

  • Walls, Kristin. Synoptic Analysis of the Tornado and Derecho Climatology of Ohio from 1963-2002. 2009. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1250265230.

    MLA Style (8th edition)

  • Walls, Kristin. "Synoptic Analysis of the Tornado and Derecho Climatology of Ohio from 1963-2002." Master's thesis, Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250265230

    Chicago Manual of Style (17th edition)

osu1250265230
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© 2009, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.