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THE WEATHER AND CIRCULATION OF NOVEMBER 1964
Contrasting Weather Regimes Related To Long-Wave Progression
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No Abstract Available.
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No Abstract Available.
THE WEATHER AND CIRCULATION OF DECEMBER 1966
Blocking Over North America
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No Abstract Available.
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No Abstract Available.
THE WEATHER AND CIRCULATION OF JULY 1967
Unusually Cool East of the Divide
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No Abstract Available.
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No Abstract Available.
THE WEATHER AND CIRCULATION OF MAY 1965
Severe Storms in Mid-Nation and Continued Drought in the Northeast
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No Abstract Available.
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No Abstract Available.
THE WEATHER AND CIRCULATION OF OCTOBER 1965
Long-Wave Progression and Temperature Reversal
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No Abstract Available.
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No Abstract Available.
THE WEATHER AND CIRCULATION OF DECEMBER 1965
Including a Discussion of the Record Dry Year in the Northeast
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No Abstract Available.
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No Abstract Available.
THE WEATHER AND CIRCULATION OF JUNE 1964
Reversal of a Long-standing Trend Over the Pacific
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No Abstract Available
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No Abstract Available
THE WEATHER AND CIRCULATION OF MARCH 1968
A Warm Month With Increasing Westerlies
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No Abstract Available.
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No Abstract Available.
THE WEATHER AND CIRCULATION OF JUNE 1963
Interplay Between Blocking and Drought in the United States
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No Abstract Available.
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No Abstract Available.
Abstract
The tornadoes of January 21, 1959, in Tennessee and neighboring States are considered in relation to the New England January thaw singularity described by Wahl [1]. This singularity, in the form of a warm spell, is shown to occur on the average on January 20–22 at Nashville. It is shown that at the time of the singularity there coexist on the average in the Tennessee area certain conditions favorable for the formation of severe storms. These include a tongue of warm, moist air at the surface, a wind shift from southerlies during the warm period to cool northwesterlies immediately afterward, a 500-mb. trough to the west with southwesterly winds and contour inflection point over the Tennessee area, and the presence of a jet stream aloft. Review of past records reveals that tornadoes in the Arkansas, Alabama, Mississippi, Tennessee, and Kentucky area have occurred more often during the time of the singularity, January 20–22, than at any other time of the month.
Abstract
The tornadoes of January 21, 1959, in Tennessee and neighboring States are considered in relation to the New England January thaw singularity described by Wahl [1]. This singularity, in the form of a warm spell, is shown to occur on the average on January 20–22 at Nashville. It is shown that at the time of the singularity there coexist on the average in the Tennessee area certain conditions favorable for the formation of severe storms. These include a tongue of warm, moist air at the surface, a wind shift from southerlies during the warm period to cool northwesterlies immediately afterward, a 500-mb. trough to the west with southwesterly winds and contour inflection point over the Tennessee area, and the presence of a jet stream aloft. Review of past records reveals that tornadoes in the Arkansas, Alabama, Mississippi, Tennessee, and Kentucky area have occurred more often during the time of the singularity, January 20–22, than at any other time of the month.
