Accession Number : AD0638222

Title :   MESOSCALE STUDIES OF INSTABILITY PATTERNS AND WINDS IN THE TROPICS.

Descriptive Note : Semi-annual rept. no. 2 1 Dec 65-31 May 66.

Corporate Author : MIAMI UNIV FLA RADAR METEOROLOGICAL LAB

Personal Author(s) : Gerrish,Harold P. ; Hiser,Homer W.

Report Date : AUG 1966

Pagination or Media Count : 58

Abstract : Two of the most remarkable rainstorms in Florida's history are described and analyzed. The storm of 13 to 15 October 1965 produced total amounts in excess of 26 inches with 24.43 inches falling in 24 hours at Bahia Mar in Fort Lauderdale and 21.28 inches in 12 hours at Pompano Beach on the 14th. The Halloween storm of 30 October to 1 November 1965 produced total amounts on the order of 14 inches in the same general area with a questionable report of 20 inches in 24 hours in the Boca Raton area. If this report is correct, it is the first time in history that separate storms have produced 20 inches or more rain in 24 hours over the same level terrain in such a short period of time, at least in this part of the world. The heavy rates for 12 and 24 hours in the mid-October storm are quite rare, being exceeded on the order of only 6 times in the past century in the continental United States. The heaviest rain in both storms was triggered by an asynptote of confluence oriented SE-NW over the area at 850mb. Subsequent vortex development occurred but was confined below the melting level and was of minor importance as far as producing rain in the Fort Lauderdale-Pompano Beach area. Aside from isohyetal analysis and synoptic aspects, particular emphasis is placed on: precipitable water, raob analysis, divergence, vorticity, and preliminary radar aspects. (Author)

Descriptors :   (*RAINFALL, FLORIDA), (*STORMS, FLORIDA), TROPICAL REGIONS, METEOROLOGY, CLIMATE, METEOROLOGICAL RADAR

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE