Extratropical Squall Lines and Rainbands

Hane, Carl E.

doi:10.1007/978-1-935704-20-1_16

Cited by 12 publications

(8 citation statements)

References 39 publications

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“…Córdoba and Alfonso (1992) have pointed out that the SLS-producing prefrontal squall lines studied to date in Cuba were linked to slow-moving extratropical lows associated with short-wave troughs in the southern branch of a split polar jet (SBPJ). The conditions were similar to central U.S. squall environments (Hane 1986) except that the Cuban events occurred with weak, cold fronts of Pacific maritime, rather than continental, origins.…”

Section: Introductionmentioning

confidence: 66%

The 13 March 1993 Severe Squall Line over Western Cuba

Alfonso

Naranjo

1996

Wea. Forecasting

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On 13 March 1993 a powerful prefontal squall line hit western and central Cuba. At 0000 UTC, a fastdeveloping extratropical cyclone with a well-defined cold front was located in the northeast Gulf of Mexico. Over the eastern Gulf of Mexico there was a 300-hPa jet streak interacting with a low-level jet. A hodograph typically associated with supercells or severe squall lines was observed at Key West, Florida. The air mass over the eastern Gulf of Mexico, Florida, and Cuba was conditionally unstable. Instability was enhanced by moist air at the surface interacting with a dry intrusion in the midtroposphere from the Mexican Plateau. Lifting induced by a strong short-wave trough favored the formation a compact squall line with embedded bow-echoes and lineecho wave patterns. Damaging winds were widespread with the squall line. Thus, the event fits the definition of a serial derecho. One of the two bow echoes that affected Cuba included a small but strong mesocyclone in its forward flank, as detected by radar and surface observations. The mesocyclone caused great damage in a 20-km-wide strip over the Havana and Havana City provinces, producing a family of downbursts in its southern portion. Estimated damage up to F2 on the Fujita scale was experienced in the effected area. Another bow echo struck the central region of Cuba producing similar damage. The squall line event described in this study is the most damaging one ever recorded in Cuba.

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Section: Introductionmentioning

confidence: 66%

The 13 March 1993 Severe Squall Line over Western Cuba

Alfonso

Naranjo

1996

Wea. Forecasting

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“…The second category of MCS is the squall line (Hane 1986), which is a narrow band of advancing thunderstorms. Squall lines may or may not be associated with a weather front, and the line can be continuous or broken.…”

Section: Mesoscale Convective Systemsmentioning

confidence: 99%

Severe convective storms, flash floods and global warming in Pennsylvania

Yarnal

Frakes

Bowles

et al. 1999

Weather

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“…Because these new circulations develop at different points in time, a series of DMC cells typically exist in different lifecycle stages simultaneously. Eventually, the discrete DMC cells may merge into an organized cluster of circulations commonly referred to as a mesoscale convective system (MCS) (Hane 1986; Zipser 1982).…”

Section: Introductionmentioning

confidence: 99%

Severe Deep Moist Convective Storms: Forecasting and Mitigation

Arnold¹

2007

Geography Compass

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Small-scale (2-20 km) circulations, termed 'severe deep moist convective storms', account for a disproportionate share of the world's insured weather-related losses. Spatial frequency maximums of severe convective events occur in South Africa, India, Mexico, the Caucasus, and Great Plains/Prairies region of North America, where the maximum tornado frequency occurs east of the Rocky Mountains. Interest in forecasting severe deep moist convective systems, especially those that produce tornadoes, dates to 1884 when tornado alerts were first provided in the central United States. Modern thunderstorm and tornado forecasting relies on technology and theory, but in the post-World War II era interest in forecasting has also been driven by public pressure. The forecasting process begins with a diagnostic analysis, in which the forecaster considers the potential of the atmospheric environment to produce severe convective storms (which requires knowledge of the evolving kinematic and thermodynamic fields, and the character of the land surface over which the storms will pass), and the likely character of the storms that may develop. Improvements in forecasting will likely depend on technological advancements, such as the development of phased-array radar systems and finer resolution numerical weather prediction models. Once initiated, the evolution of deep convective storms is monitored by satellite and radar. Mitigation of the hazards posed by severe deep moist convective storms is a threestep process, involving preparedness, response, and recovery. Preparedness implies that risks have been identified and organizations and individuals are familiar with a response plan. Response necessitates that potential events are identified before they occur and the developing threat is communicated to the public. Recovery is a function of the awareness of local, regional, and even national governments to the character and magnitude of potential events in specific locations, and whether or not long-term operational plans are in place at the time of disasters.

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Extratropical Squall Lines and Rainbands

Cited by 12 publications

References 39 publications

The 13 March 1993 Severe Squall Line over Western Cuba

The 13 March 1993 Severe Squall Line over Western Cuba

Severe convective storms, flash floods and global warming in Pennsylvania

Severe Deep Moist Convective Storms: Forecasting and Mitigation

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