Accession Number : AD0254827

Title :   PROJECT TORNADO-SFERICS

Corporate Author : AIR WEATHER SERVICE SCOTT AFB IL

Report Date : 1960

Pagination or Media Count : 1

Abstract : Results of the 1960 Project Tornado-Sferics are presented. The AN/FMS-3 sferics equipment was operated for the first full severe weather season. Descriptions of the equipment and methods of operation and calibration are presented. Analyses to illustrate the effectiveness of the system in detecting weather phenomena are discussed. Case studies are presented to show the correlation of sferics fixes as detected by the system with severe weather activity. Results indicated that fixes from azimuths of four or more detection stations are reliable indicators of thunderstorm activity, but not all thunderstorms are detected by the sferics net. Predictions of severe weather activity from sferics fixes alone are not reliable. Sferics observations are best used in conjunction with radar reports. Early moring comparison of counts of sferics signals per unit time at the three detection frequencies can provide an indication for the amount of severe weather activity which can be expected later in the day. Comparison of sferics fixes with clear air turbulence showed only negative results, except for one case of a positive correlation of sferics, clear air turbulence, and a hurricane track 48 hr later. There was good correlation of sferics fixes with the bright areas in Tiros cloud photographs. (Author)

Descriptors :   *METEOROLOGICAL RADAR, *RADAR CROSS SECTIONS, *TORNADOES, ATMOSPHERICS, METEOROLOGY, PLOTTING BOARDS, RADAR NAVIGATION, RADAR TRACKING, STORMS, TROPICAL CYCLONES.

Distribution Statement : APPROVED FOR PUBLIC RELEASE