NATIONAL OPTICAL ASTRONOMY OBSERVATORIES
CERRO TOLOLO INTER-AMERICAN OBSERVATORY
Meteorology Report Month: July Year: 1984
Date Cloud cover Photometric Useful Useless
1 - 2 8 - 8 - 8 - 8 The greatest storm of the history happens during these 10 days and nights. *
2 - 3 8 - 8 - 8 - 8 *
3 - 4 8 - 8 - 8 - 8 *
4 - 5 8 - 8 - 8 - 8 *
5 - 6 8 - 8 - 8 - 8 *
6 - 7 4 - 2 - 2 - 7 *
7 - 8  8 - 8 - 8 - 8 *
8 - 9 8 - 8 - 8 - 8 *
9 - 10 8 - 8 - 8 - 8 *
10 - 11 8 - 8 - 8 - 8 *
11 - 12

During these nights was not possible to get meteorological data.  The observatory was closed by the effects of the storm.
12 - 13
13 - 14
14 - 15
15 - 16
16 - 17
17 - 18 0 - 0 - 0 - 0 *    
18 - 19 2 - 0 - 0 - 2   *  
19 - 20 2 - 0 - 0 - 0 *    
20 - 21 1 - 0 - 0 - 0 *    
21 - 22 0 - 0 - 1 - 2   *  
22 - 23 0 - 0 - 2 - 0   *  
23 - 24 0 - 0 - 0 - 0 *    
24 - 25 0 - 0 - 0 - 0 *    
25 - 26 0 - 0 - 0 - 0 *    
26 - 27 0 - 0 - 0 - 0 *    
27 - 28 0 - 0 - 0 - 0 *    
28 - 29 0 - 0 - 0 - 0 *    
29 - 30 1 - 1 - 3 - 5   *  
30 - 31 7 - 8 - 8 - 8     *
31 - 01 7 - 8 - 8 - 8     *
Totals 9 4 18
Min. Med. Max.
Temperat. deg.F   25 45 78
Humidity % RH   6 20 - 30 100
Wind speed M/H   00 10 70
Water, precipitation this month 470 tot.year: 482.5
Report by: Oscar Saa