Archives

Multiscale Analysis of Dixie Alley Tornado and Null Events Jonathan P. Klepatzki, Milrad, Shawn M.  ABSTRACT Some of the most destructive tornadoes throughout history have occurred in what is known as Dixie Alley within the Southeast U.S.  Previous studies for Florida defined a tornado event as ≥4 tornadoes within a 24-h period during December–May (avoiding […]

A Climatology of 1995–2024 United States Warm-Season Derecho Events and Analysis of Potential Climate Forcing Associations Kacie N. Shourd, Kaplan, M. L. ABSTRACT We identified 147 contiguous United States warm-season (May, June, July, and August) derechos between 1995 and 2024. This results in an average of approximately five derechos each warm season. Using the compiled […]

Comments on “The Strongest Winds in Tornadoes Are Very Near the Ground” David S. Nolan ABSTRACT Kosiba and Wurman (KW) investigated the vertical variations of windspeeds observed in tornadoes by mobile Doppler radars over the last 30 y. By comparing windspeeds observed at the lowest altitudes, including some within 15 m of the surface, KW […]

Pressure Measurements and Video Observations near and inside Three EF2 Tornadoes Lanny E. Dean, David R. Moran, Randy D. Hicks, Pat T. Winn ABSTRACT From the spring of 2016 through the spring of 2019, three EF2-rated tornadoes were sampled with in-situ tornado probes as part of the Pressure Acoustics Recordings Inside Tornadoes Experiment. The probe […]

A Mesonet–Based Climatology of Severe Convective Winds in West Texas W. Scott Gunter and Quint M. Long ABSTRACT Multiple studies have investigated the occurrence of severe convective winds and have increased our understanding of the forces driving severe winds and their spatial and temporal patterns. Some of the data used in studies have come from […]

Observational Study of Two Norman, Oklahoma Storms with Very Large, Damaging Hail in Long-Hodograph Environments Katharine M. Kanak and Jerry M. Straka ABSTRACT Two ≥3-in (7.6-cm) hailstorms affected Norman, Oklahoma in 2021:  one on 28–29 April and the other on 10–11 October.  Wind-driven hail associated with the April storm was estimated to have caused over […]

In Situ Video Observations and Analysis of the 16 June 2014 Pilger, Nebraska EF4 west Tornado Lanny E. Dean, David R. Moran, Randy D. Hicks ABSTRACT An unusual tornado event involving two large and violent EF4 tornadoes occurring simultaneously impacted the Pilger, NE area on 16 June 2014, resulting in two deaths. A privately funded […]

Using the Supercell Polarimetric Observation Research Kit (SPORK) to Examine a Large Sample of Pretornadic and Nontornadic Supercells Matthew B. Wilson and Matthew S. Van Den Broeke  ABSTRACT Previous work examining dual-polarization (dual-pol) radar signatures of supercells has shown that differential reflectivity (ZDR) column area, hailfall area and specific differential phase (KDP)–ZDR separation angles may […]