﻿F. 
  Waldo 
  — 
  Wi?id 
  Velocities 
  in 
  the 
  United 
  States. 
  441 
  

  

  15 
  h 
  to 
  17 
  h 
  ) 
  is 
  of 
  rather 
  long 
  duration 
  but 
  the 
  amplitude 
  is 
  not 
  

   excessive, 
  and 
  the 
  principal 
  minimum 
  occurs 
  at 
  about 
  6 
  h 
  to 
  8 
  h 
  . 
  

   The 
  high 
  station 
  of 
  Winnemucca 
  is 
  the 
  only 
  one 
  with 
  pro- 
  

   nounced 
  secondary 
  phases. 
  In 
  the 
  north, 
  the 
  characteristics 
  of 
  

   the 
  curves 
  are 
  similar 
  to 
  those 
  near 
  the 
  center, 
  except 
  that 
  at 
  

   Ft. 
  Assiniboine 
  and 
  Helena 
  there 
  is 
  a 
  secondary 
  minimum 
  at 
  

   21 
  h 
  to 
  22 
  h 
  and 
  maximum 
  at 
  24 
  h 
  . 
  

  

  For 
  the 
  Year, 
  in 
  the 
  south, 
  the 
  maxima 
  (culminating 
  at 
  about 
  

   15 
  h 
  ) 
  are 
  about 
  an 
  average 
  between 
  those 
  for 
  January 
  and 
  July, 
  

   and 
  a 
  single 
  minimum 
  occurs 
  at 
  6 
  h 
  or 
  8 
  h 
  , 
  except 
  for 
  Phoenix 
  

   which, 
  as 
  in 
  July, 
  has 
  an 
  absolute 
  minimum 
  in 
  the 
  afternoon 
  : 
  

   the 
  minimum 
  period 
  is 
  rather 
  level. 
  Near 
  the 
  center, 
  but 
  a 
  

   single 
  moderately 
  sized 
  maximum 
  occurs 
  at 
  about 
  15 
  h 
  and 
  the 
  

   minimum 
  is 
  at 
  6 
  h 
  to 
  8 
  h 
  . 
  Winnemucca 
  has 
  two 
  maxima, 
  a 
  

   slight 
  secondary 
  one 
  near 
  midnight 
  ; 
  and 
  the 
  morning 
  mini- 
  

   mum, 
  although 
  it 
  remains 
  the 
  primary, 
  is 
  not 
  much 
  different 
  

   from 
  the 
  secondary. 
  At 
  the 
  north, 
  the 
  maxima 
  are 
  usually 
  fairly 
  

   well 
  marked 
  (crest 
  at 
  about 
  15 
  h 
  ) 
  and 
  cover 
  a 
  long 
  period 
  with 
  

   no 
  secondary 
  phases 
  except 
  at 
  Ft. 
  Assiniboine. 
  

  

  The 
  curves 
  (p. 
  442) 
  showing 
  the 
  daily 
  march 
  of 
  the 
  wind 
  veloc- 
  

   ities 
  for 
  January 
  and 
  July 
  for 
  characteristic 
  stations 
  of 
  twenty 
  

   regions 
  in 
  the 
  U. 
  S. 
  are 
  numbered 
  from 
  1 
  to 
  20 
  and 
  the 
  follow- 
  

   ing 
  list 
  will 
  identify 
  stations 
  by 
  name 
  : 
  

  

  Daily 
  Wind, 
  miles 
  per 
  hour. 
  

   Januaky. 
  July. 
  

  

  

  

  

  

  

  Daily 
  

  

  

  

  

  Daily 
  

  

  

  

  AtO 
  h 
  . 
  

  

  Max. 
  

  

  Min. 
  

  

  average. 
  

  

  At0 
  h 
  . 
  

  

  Max. 
  

  

  Min. 
  

  

  aver. 
  

  

  1. 
  

  

  Block 
  Island, 
  

  

  15-9 
  

  

  16-8 
  

  

  15-5 
  

  

  16-2 
  

  

  10-4 
  

  

  12-7 
  

  

  9-7 
  

  

  10-9 
  

  

  2. 
  

  

  New 
  York 
  City, 
  

  

  10-0 
  

  

  11-5 
  

  

  9-7 
  

  

  10-4 
  

  

  66 
  

  

  9-1 
  

  

  5-7 
  

  

  73 
  

  

  3. 
  

  

  Key 
  West, 
  

  

  111 
  

  

  11-7 
  

  

  9-9 
  

  

  10-8 
  

  

  8-8 
  

  

  11-1 
  

  

  8-8 
  

  

  10-3 
  

  

  4. 
  

  

  Corpus 
  Christi, 
  

  

  10-1 
  

  

  10-4 
  

  

  11-8 
  

  

  9-4 
  

  

  12-6 
  

  

  15-7 
  

  

  11-5 
  

  

  13-7 
  

  

  5. 
  

  

  Cleveland, 
  

  

  10-7 
  

  

  12-0 
  

  

  10-2 
  

  

  10-9 
  

  

  7-8 
  

  

  8-4 
  

  

  5-1 
  

  

  90 
  

  

  6. 
  

  

  Tatoosh 
  Island, 
  

  

  16-6 
  

  

  17-0 
  

  

  15-3 
  

  

  164 
  

  

  8-8 
  

  

  8-2 
  

  

  59 
  

  

  71 
  

  

  7. 
  

  

  San 
  Francisco, 
  

  

  5-2 
  

  

  7-7 
  

  

  5-0 
  

  

  6-2 
  

  

  8-9 
  

  

  17-9 
  

  

  6-7 
  

  

  11-4 
  

  

  8. 
  

  

  San 
  Diego, 
  

  

  4-3 
  

  

  8-4 
  

  

  3-5 
  

  

  5-1 
  

  

  2-8 
  

  

  10-7 
  

  

  2-8 
  

  

  5-8 
  

  

  0. 
  

  

  Albany, 
  

  

  5-9 
  

  

  8-5 
  

  

  5-3 
  

  

  6-6 
  

  

  4-2 
  

  

  80 
  

  

  3-6 
  

  

  5-6 
  

  

  10. 
  

  

  Atlanta, 
  

  

  10-3 
  

  

  11-2 
  

  

  9-4 
  

  

  10-5 
  

  

  6-5 
  

  

  7-8 
  

  

  6-1 
  

  

  6-8 
  

  

  11. 
  

  

  Little 
  Rock, 
  

  

  56 
  

  

  6-9 
  

  

  5-3 
  

  

  59 
  

  

  2 
  4 
  

  

  6-3 
  

  

  23 
  

  

  4-1 
  

  

  12. 
  

  

  Ticksburg, 
  

  

  6-8 
  

  

  7-4 
  

  

  6-2 
  

  

  67 
  

  

  4-0 
  

  

  6-2 
  

  

  3-8 
  

  

  47 
  

  

  13. 
  

  

  Louisville, 
  

  

  8-4 
  

  

  9-7 
  

  

  8-1 
  

  

  8-9 
  

  

  4-0 
  

  

  84 
  

  

  3-8 
  

  

  57 
  

  

  14. 
  

  

  St. 
  Paul, 
  

  

  5-2 
  

  

  7-2 
  

  

  5-1 
  

  

  5-8 
  

  

  39 
  

  

  8-2 
  

  

  3-9 
  

  

  5-6 
  

  

  15. 
  

  

  North 
  Platte, 
  

  

  6*9 
  

  

  97 
  

  

  6-4 
  

  

  7-5 
  

  

  8-2 
  

  

  10-6 
  

  

  6-5 
  

  

  8-8 
  

  

  16. 
  

  

  Palestine, 
  Texas, 
  

  

  8-7 
  

  

  105 
  

  

  8 
  3 
  

  

  9-3 
  

  

  6-7 
  

  

  7 
  9 
  

  

  54 
  

  

  6-8 
  

  

  IT. 
  

  

  Ft. 
  Apache, 
  

  

  46 
  

  

  9-2 
  

  

  3-3 
  

  

  5-3 
  

  

  4-4 
  

  

  104 
  

  

  2-9 
  

  

  6-0 
  

  

  16. 
  

  

  Salt 
  Lake 
  City, 
  

  

  40 
  

  

  6-0 
  

  

  3-7 
  

  

  4-5 
  

  

  4-5 
  

  

  8-9 
  

  

  2 
  8 
  

  

  5-7 
  

  

  10. 
  

  

  Ft. 
  Custer, 
  

  

  6-4 
  

  

  7-5 
  

  

  64 
  

  

  v 
  6-7 
  

  

  6-3 
  

  

  93 
  

  

  4-7 
  

  

  69 
  

  

  20. 
  

  

  Ptoseburgh, 
  

  

  2-5 
  

  

  4-6 
  

  

  2-5 
  

  

  3-0 
  

  

  1-5 
  

  

  84 
  

  

  1-3 
  

  

  4-0 
  

  

  In 
  the 
  little 
  table 
  are 
  given 
  for 
  January 
  and 
  July 
  the 
  wind 
  

   in 
  miles 
  per 
  hour 
  at 
  h 
  (midnight), 
  at 
  the 
  time 
  of 
  maximum 
  

   and 
  minimum 
  wind, 
  and 
  for 
  the 
  average 
  of 
  all 
  the 
  hours 
  of 
  the 
  

   day. 
  

  

  