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Lixion A. Avila and Gilbert B. Clark

Abstract

.The 1988 season produced 62 tropical waves, 19 tropical depressions and 12 tropical storms, 5 of which became hurricanes. Eighty-three percent of the tropical storms developed from African waves. A comparison with the past 21 years is included.

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John A. Augustine and Kenneth W. Howard

Abstract

Digital GOES infrared imagery is used to document mesoscale convective complexes (MCCs) over the United States during 1985. The introduction of digital imagery to this process, which has been carried out since 1978, has made possible a partial automation of the MCC documentation procedure and subsequently expanded opportunities for research. In conjunction with these improvements, the definition of an MCC has been slightly modified from that proposed by Maddox in 1980. The warmer threshold area measurement (⩽−32°C) of Maddox's original criteria has been dropped from consideration because its measurement was too subjective, and also was determined to be unnecessary. In 1985, 59 MCCs were identified; this total is approximately 20 to 40 more than in any year since 1978, when these annual summaries began. The monthly distribution and seasonal progression of MCCs in 1985 are similar to those of prior years. The enhanced MCC activity in June 1985 is associated with a persistent favorable quasi-geostrophic forcing during that period. Significant MCC research conducted in 1985 included a prototype large-scale field program (0.-K. PRE-STORM) in May and June dedicated solely to the investigation of middle-latitude mesoscale convective systems.

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Robert A. Case and Harold P. Gerrish

Abstract

A general summary of the 1983 hurricane season is presented. Four named tropical cyclones were tracked during the season. Three landfalls occurred. Alicia, the first cyclone of the season, ended a three-year period during which no hurricanes reached the United States coastline.

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J. Korshover and J. K. Angell

Abstract

The number and location of stagnation days within the eastern United States, as estimated mainly from a surface geostrophic-wind criterion, is presented by month and for the year 1982 as a whole. Unlike the situation in 1981 when there were an above-average number of stagnation days in comparison with the period 1936–75, with unique occurrences of stagnation in a belt extending from Minnesota to Maine, the year 1982 seems quite typical with respect to both number and location of stagnation days.

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Gilbert B. Clark

Abstract

Five named tropical cyclones and one subtropical cyclone were tracked during 1982 in the Atlantic–Caribbean–Gulf of Mexico region. There were no landfalling hurricanes.

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Miles B. Lawrence and Joseph M. Pelissier

Abstract

Eleven named tropical cyclones and one subtropical cyclone were tracked during 1981 in the Atlantic-Caribbean region. There were no landfalling hurricanes.

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Miles B. Lawrence and Joseph M. Pelissier

Abstract

A summary of the 1980 hurricane season is presented. Eleven named tropical cyclones were tracked, of which nine reached hurricane force. Allen, an intense storm, affected a number of Caribbean countries before making landfall on the Texas coast.

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Paul J. Hebert

Abstract

A general summary of the 1979 hurricane season is presented. Included are highlights of the season, comparisons of activity in recent years with long-term averages, and comment on large-scale atmospheric features which prevailed during the season and their impact on storm tracks. Finally, there are accounts of individual storms, which give meteorological details and the influence of synoptic features on their tracks and intensity.

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Neil L. Frank and Gilbert Clark

Abstract

The 1979 hurricane season produced 85 “tropical system” of which 27 acquired the closed circulation of a depression 52 of these originated over the African Continent. African seedlings initiated 7 of the 8 named Atlantic storm and 7 of the 10 East Pacific storms.

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Miles B. Lawrence

Abstract

A summary of the 1978 Atlantic hurricane season is presented including detailed accounts of individual storms. There were 11 named storms this year of which five reached hurricane force. Three storms made landfall along the Gulf of Mexico coastline, two in the United States and the other in Mexico. Hurricane Greta affected portions of Central America.

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