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January 2019 AMS/NWA Meeting

January 2019 AMS/NWA Meeting. Student Opportunities at NWS Memphis Mid-South Tornado Patterns, Synoptic Scale. Student Opportunities. NWS Memphis Hosted over 40 students in past 11 years High School Volunteer Shelby County School Internship (paid) Undergraduate & Graduate* Volunteer *

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January 2019 AMS/NWA Meeting

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  1. January 2019 AMS/NWA Meeting • Student Opportunities at NWS Memphis • Mid-South Tornado Patterns, Synoptic Scale

  2. Student Opportunities • NWS Memphis • Hosted over 40 students in past 11 years • High School • Volunteer • Shelby County School Internship (paid) • Undergraduate & Graduate* • Volunteer * • Hollings & MSI/EPP Scholarship (paid) • NCAS Students (paid) • Pathways (paid) [was SCEP] • Other Internships * (paid)

  3. Student Opportunities • Hollings Scholarships • https://www.noaa.gov/office-education/hollings-scholarship • Sophomore • Deadline: Thursday, January 31st, 2019 • Pathways • USAJobs • Applications open vary, usually Feb – Apr • Must be at least a Sophomore • Typically 640 hours

  4. Mid-South Tornado Patterns, Synoptic Scale Prepared by Anna Wanless Arizona State University

  5. Introduction Ashley, W., 2007 “Spatial and Temporal Analysis of Tornado Fatalities in the United States: 1880-2005”. Retrieved from https://doi.org/10.1175/2007WAF2007004.1

  6. Objectives • Analyze and identify synoptic weather patterns • Hypothesis • There are patterns that are associated with tornadoes • Some of these patterns will be linked to higher number and/or intensity of tornadoes

  7. Past Work

  8. Methodology • 48 events: • From 1999-2018 • Days with 2+ tornadoes • Split days into 6 hour increments • Analyzed the Surface and Upper air charts • Surface Low Pressure • 850mb: Low-Level Jet • 500mb: Trough • 300mb: Upper-Level Jet

  9. Methodology • Created 9 part grid Flow

  10. 2 4

  11. Methodology • Identified which part of each grid had the most events • 17 • No correlation • Linking grids 500mb Trough Upper Level Jet Surface Low Low Level Jet

  12. Low Level Jet White=Surface Low Red=Low Level Jet Purple=Upper Level Jet Blue= Trough

  13. Low Level Jet White=Surface Low Red=Low Level Jet Purple=Upper Level Jet Blue= Trough

  14. Low Level Jet: 0, Surface Low: White=Surface Low Red=Low Level Jet Purple=Upper Level Jet Blue= Trough

  15. Low Level Jet White=Surface Low Red=Low Level Jet Purple=Upper Level Jet Blue= Trough X=1 or 2 events

  16. Methodology • Finding patterns White=Surface Low Red=Low Level Jet Purple=Upper Level Jet Blue= Trough

  17. White=Surface Low Red=Low Level Jet Purple=Upper Level Jet Blue= Trough

  18. Summary • 8 Patterns • No correlation between them and number/intensity of tornadoes • More study needed

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