238 



ANNUAL REPORT SMITHSONIAN INSTITUTION, 1945 



augmented by storm overflow the sudden descent of which was induced 

 by convection. The wind had been increasing in velocity during the 

 morning, from 10 to 20 miles an hour between 8 and 11, apparently 

 owing to the increasing involvement of the wind higher and higher up 

 as the depth of the convective overturning increased. With cloudi- 

 ness cutting off most of the sun after noon, however, the wind again fell 

 back to its 10 miles an hour morning value by 3 p. m. 



Table 1. 



-Summary of personal journal of F. B. Dinioiddie during hurricane at 

 Wanchese, 1 N. C, September 14, 19H 



Time 

 (E. W. T.) 



Pressure (sea level) 

 (inches) 



Wind 



Direction 



Estimated 



gust velocity 



(m. p. h.) 



Rain and clouds 



8:15.. 

 8:35.. 

 8:40.. 

 9:00.. 

 9:20.. 

 9.30. . 

 9.40.. 

 9:54.. 

 10:05. 



10:10. 

 10:20. 

 10:30. 



10:35. 



10:40. 

 10:45. 

 10:50. 

 10:57. 

 10:59. 

 11:05. 

 11:10. 

 11:20. 



11:30. 

 11:50. 

 11:53. 

 12:00. 



12:10. 

 12:27. 

 12:50. 

 1:00.. 



1:30. 

 1:38. 



3:00. 

 4:25. 

 6:40. 

 9:15. 



Hurricane period during approach of center, 115 minutes 

 Heavy rain. 



Very heavy rain. 



First pronounced lulls in wind. 



Passing of the center, 75 minutes 



28.12. 

 28.03. 

 28.00\ 



28.01 



28.00 

 28.01 

 28.00 

 27.99 

 2S.02 

 28.01, 

 28.05 

 2S.09 



' r essur e 

 around 

 28.00 in, 

 for 35-40 

 minutes. 



Shifting to N_. 



N x W. 



NNW. 



30-40. 

 20-30. 



80 



85 



90 



80-100. 



Rain slackening. 



Moderate rain, 



sky bright 

 Slack rain, sky 



dark 



Intermittent bright 

 spots for 50 min- 

 utes but no clear 

 sky or high 

 clouds visible. 

 10/10 stratus 

 throughout. 



28.15 



28 33) 



28.40>Fastest rise. 

 28.50) 



No rain] 

 No rain No rain 

 No rain^ for 2C 

 No rain m in- 

 No rainj utes. 

 Moderate rain 



Rain squalls, intermittent bright 

 spots. 



Hurricane period after passage of center, 105 minutes 



Continuous heavy rain, dark sky. 



28.59. 

 28.70. 

 28.90. 

 28.98. 



1:02 28.96 » 



29.01. 



29.10. 

 29.18. 



29.48. 

 29.58. 

 29.68: 



NW. 



NW. 



NW x W. 

 WNW... 

 WNW... 



WNW. 

 WNW. 



WxN. 

 W 



w. 



120. 

 130. 



110-120. 



120 



130 



140 



140-150. 



70. 



Very heavy rain] 

 Worst w ind ;| Severest 



part of 

 35 mln- 



worst rain > storm 

 No slackening of utes. 



wind, rain I 

 Final phase of diminishing wind. 

 Llnht rain; scuds lifting; very abrupt 



decrease of wind and rain. 



r . . .. „. ,„| 1:30-2:00 sprays 



Fi ", blue s. ky n from break £ rs & 

 soutnwest;rain „ >,;„ h 

 stopped I u - nlgn * 



Edge of Cs. bank in zenith. 



3/10 cloudy; bank receding In N. x E. 



Clear. 



' Wanchese Is on the west shore of an Island in Pamlico Sound, about 40 miles north of Cape Hatteras 

 and 6 miles from the coast of the opean ocean. 

 * Retrogression of barometer. 



