• Corpus ID: 201819667

Tornadoes in Nonmesocyclone Environments with Pre-existing Vertical Vorticity along Convergence Boundaries

  title={Tornadoes in Nonmesocyclone Environments with Pre-existing Vertical Vorticity along Convergence Boundaries},
  author={James Caruso},
Tornadoes resulting from stretching of pre-existing vertical vorticity along convergence boundaries are not unusual in the warm season in the central plains of the United States. These tornadoes are associated mainly with nonmesocyclone processes (Brady and Szoke 1989), sometimes called "nonsupercell" (Wakimoto and Wilson 1989), with the tornadoes often called "landspouts" (Bluestein 1985). In some cases, tornadoes in such environments can reach significant intensity (defined here as F2 or… 

Non-mesocyclone Tornadoes

Knowledge of environments favorable to the formation of tornadoes, even weak ones, is important to the soaring weather forecaster. Accordingly, most violent tornadoes develop usually from supercell

Convective Modes for Significant Severe Thunderstorms in the Contiguous United States. Part III: Tropical Cyclone Tornadoes

A gridded, hourly, three-dimensionalenvironmental mesoanalysis databaseat the Storm Prediction Center (SPC), based on objectively analyzed surface observations blended with the Rapid Update Cycle

Using Near-Ground Storm Relative Helicity in Supercell Tornado Forecasting

This study examines the possibility that supercell tornado forecasts could be improved by utilizing the storm-relative helicity (SRH) in the lowest few hundred meters of the atmosphere (instead of


Tropical cyclone (TC) tornado prediction remains a substantial challenge, both on its own and compared to advances made in prognostically relevant understanding of midlatitude supercells in

Photographs and Analysis of an Unusually Large and Long-lived Firewhirl

On 30 June 2005, a large and long-lived firewhirl was observed and photographed over a field being burned to remove wheat stubble in central Kansas. With a well-defined boundary focusing vertical

In Like a Lion : The March 8 th , 2000 Tornado

  • Theodore Lyons
  • Environmental Science
  • 2007
The tornado that struck Milwaukee, WI on March 8, 2000 was the earliest on record. Unlike most tornadoes, this particular tornado was not associated with a supercell or any form of a mesocyclone. The

The Impact of Airmass Boundaries on the Propagation of Deep Convection: A Modeling-Based Study in a High-CAPE, Low-Shear Environment

A suite of experiments conducted using a cloud-resolving model is examined to assess the role that preexistingairmassboundariescanplayinregulatingstormpropagation. The27May1997centralTexastornadic

Waterspout Forecasting Method Over the Eastern Adriatic Using a High-Resolution Numerical Weather Model

In this study, a synoptic and mesoscale analysis was performed and Szilagyi’s waterspout forecasting method was tested on ten waterspout events in the period of 2013–2016. Data regarding waterspout

Applications of Aircraft Sounding Data in Short-Term Convective Forecasting

s, 9th Symposium on Integrated Observing and Assimilation Systems for the Atmosphere, Oceans, and Land Surface, San Diego, CA, Amer. Meteor. Soc., Paper 5.1. Moninger, W. R., R. D. Mamrosh, and P. M.


The Collaborative Colorado–Nebraska Unmanned Aircraft System Experiment (CoCoNUE) was executed on 1 March and 30 September 2009. The principal objective of this project was to examine the feasibility



A case study of nonmesocyclone Tornado development in northeast Colorado: similarities to waterspout formation

Abstract The evolution of the 26 July 1985 Erie, Colorado tornado is described using data from NCAR's CP-2 Doppler radar. This tornado develops within 20 km of the radar site under weakly forced

Severe Thunderstorm Evolution and Mesocyclone Structure as Related to Tornadogenesis

Abstract Severe thunderstorm evolution is synthesized, using published and unpublished studies of radar, instrumented aircraft, visual and surface observations. These observations reveal the

Tornadoes and Downbursts in the Context of Generalized Planetary Scales

Abstract In order to cover a wide range of horizontal dimensions of airflow, the author proposes a series of five scales, maso, meso, miso (to be read as my-so), moso and muso arranged in the order

An Hourly Assimilation–Forecast Cycle: The RUC

Abstract The Rapid Update Cycle (RUC), an operational regional analysis–forecast system among the suite of models at the National Centers for Environmental Prediction (NCEP), is distinctive in two

Ingredients supporting nonmesocyclone tornado events

  • Available on the web at:
  • 2003

The Effect of Neglecting the Virtual Temperature Correction on CAPE Calculations

Abstract A simple theoretical analysis of the impact of neglecting the virtual correction on calculation of CAPE is made. This theory suggests that while ignoring the virtual correction does not

The formation of a “landspout” in a “broken-line” squall line in Oklahoma

  • Preprints, 14th Conf. on Severe Local Storms, Indianapolis,
  • 1985

supercell and tornado forecast parameters

  • Wea. Forecasting,
  • 2003

Increasing situational awareness for nonsupercell tornadogenesis

  • 9th Annual Northern Plains Convective Workshop,
  • 2005

Test of helicity as a tornado forecast parameter

  • Preprints, 16th Conf. on Severe Local Storms, Kananaskis
  • 1990