Abstract: Several surges of maritime tropical air into the deserts of Arizona and California are investigated. These surges are related to the large cloud masses of tropical origin located over the Gulf of California. A natural ...

Abstract: Intense thunderstorms, which frequent the desert Southwest of the United States in the summer months, have been known by several different names: chubasco, haboob, and Sonora storm. Prior to the advent of satellites and ...

Abstract: Moist air from the tropics moves into northwest Mexico and the southwestern portion of the United States during the early part of the summer season. This is analogous to the monsoon circulation in other sections of the ...

Abstract: The diurnal variability of thunderstorm occurrence in Arizona is complex and related to terrain elevations. Generally, thunderstorms occur in the higher mountains during the afternoon with activity primarily of the nocturnal ...

Abstract: Tornado events of 1984 are reviewed. Significant and interesting aspects of the 907 reported tornadoes are noted. Synoptic patterns associated with four noteworthy tornado days are examined.

Abstract: A 5-yr climatology of elevated severe convective storms was constructed for 1983?87 east of the Rocky Mountains. Potential cases were selected by finding severe storm reports on the cold side of surface fronts. Of the 1826 ...

Abstract: During 9?11 November 1998 and 9?10 March 2002, two similar convective lines moved across the central and eastern United States. Both convective lines initiated over the southern plains along strong surface-based cold fronts ...