PASSAGES OF THE CENTRAL AND LATERAL VORTICES, OBSERVED IN JUNE AND JULY, 1853, IN LATITUDE 41° 20′ NORTH. I signifying Inner; O, outer; C, central; A, ascending; D, descending. ____________________________________________________________________ | | | | | | | | Order.|Vortex.| Date. | Meridian |Passage.| Calculated latitude | | | | | Passage. | | and Remarks. | |_______|_______|_________|__________|________|______________________| | | | | | | | | 1st | I. A. | June 22 | 7 A.M. | south | Centre. About 40°. | | | | 23 | 8 A.M. | north | Warsaw. Storm. | | 2d | O. D. | 27 | 0 noon | north | | | | | 28 | 1 A.M. | south | See record. | | 3d | C. A. | July 1 | 9 A.M. | south | | | | | 2 | 10 A.M. | north | Lat. 43°. Storm. | | 4th | I. D. | 7 | 5 P.M. | north | | | | | 8 | 6 P.M. | south | Lat. New York. Storm.| | 5th | C. D. | 12 | 5 P.M. | north | Aurora. | | | | 13 | 6 P.M. | south | Stormy, very. | | 6th | O. A. | 14 | 10 A.M. | south | | | | | 15 | 11 A.M. | north | See Record. | |_______|_______|_________|__________|________|______________________| The intervals between the ascending and descending passages of the different vortices, are Between I. A. and I. D. from 11 to 14 days. " O. A. " O. D. " 10 " 12 " " C. A. " C. D. " 9 " 11 " and the effect is greatest when the vortex comes to the meridian before the sun, and least when after the sun; in which case the full effect is not developed, sometimes until the following day. A brief abstract from a journal of the weather for one sidereal period of the moon, in 1853. _June_ 21st. Fine clear morning (S. fresh)[15]: noon very warm 88°; 4 P.M. plumous _cirri in south_; ends clear. 22d. Hazy morning (S. very fresh) arch of cirrus in west; 2 P.M., black in W.-N.-W.; 3 P.M., overcast and rainy; 4 P.M., a heavy gust from south; 4.30 P.M., blowing furiously (S. by W.); 5 P.M., tremendous squall, uprooting trees and scattering chimneys; 6 P.M., more moderate (W.) 23d. Clearing up (N.-W.); 8 A.M., quite clear; 11 A.M., bands of mottled cirri pointing N.-E. and S.-W.; ends cold (W. N.-W.); the cirri seem to rotate from left to right, or with the sun. 24th. Fine clear cool day, begins and ends (N.-W.) 25th. Clear morning (N.-W, light); 2 P.M. (E.) calm; tufts of tangled cirri in north intermixed with radiating streaks, all passing eastward; ends clear.