296 MONTHLY WEATHER REVIEW OCTOIIEB 1954 THE WEATHER AND CIRCULATION OF OCTOBER 1954 Including a Discussion of Hurricane Hazel in Relation to the Large-scale Circulation

• Main Author: Arthur F. Krueger
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Pacific; North Atlantic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.394.8388; http://docs.lib.noaa.gov/rescue/mwr/082/mwr-082-10-0296.pdf

possessed little amplitude and small height anomalies over the United States and.was associated with temperatures (Chart I-B) which were, for the most part, not far removed from normal. Extreme positive anomalies of 4" F. were observed both in southern Arizona (in connection with the +80-ft. height anomaly in that area) and in the Middle and North Atlantic States (a result of southerly anomalous flow and positive height departures). The lowest temperatures with respect to normal occurred in the northern part of the Great Basin in the center of a stronger-than-normal mean High at sea level (Chart XI). The monthly anomalies were small because the monthly mean was an average of two dissimilar circulation patterns. The one which prevailed during the fist half of the month was a continuation of the September pattern [l]. The other occurring in the latter half of the month represented a ridge-trough phase shift of about 180 " in the area of the United States. During the first part of October (fig. 2) the westerlies were stronger than normal with a ridge present over the East, a weak trough in the Northern Plains States and another off the Pacific Coast. This pattern was associated with above normal temperatures over most of the country and below normal only in the north and west (fig. 3). Some of the daily maximum temperatures during this period were: Greensboro, N. C.