OFVC Geyser Log for August 16 through August 31, 1999.

Transcribed By Lynn Stephens



Geyser Log abbreviations        
ie      in eruption (wasn't observed at start)
d       duration
I       interval
h       height
3h45m15s        "3 hours, 45 minutes, 15 seconds (for instance)"
>       greater than
<       less than
ns      "near start (the top of a steam column is observed still rising--when in
doubt, ie is use
d)"
ini     "initial-used for Lion, for instance"
MJR     major
min     minor
ind     indicator-used for Beehive
vr      "Visitor Report-it can be logged, (a reliable report) but the time might
not be accurate"
B       "bursts as in Grand or Plume, recorded for instance as 3B"
of      overflow
p       "pause, time between 1 meter boil and burst from Great Fountain"        

Grand Eruption Codes:                                                           
Interval type   Dn      Grand erupted n Turbans after long interval     
D0      Grand erupted on long Turban interval                   
N       No long Turban interval observed                        
Starting Geyser         T       Turban                                  
G       Grand                                   
Bursts          n       n bursts  
n+m     n bursts plus m afterbursts                             
*       long 2nd burst (d>1m15s)                                
#       long 3rd brust (d>1m15s)                 
C       Continue                                        
Q       Quit                                    

----------------------------------------------------------------------------------------
Time         Interval Duration Preplay Height Prediction

08/16/99        Old Faithful    6:49                    4:17    6:33    135     
08/16/99        Old Faithful    8:14            1:25    1:55   not seen 135     8:18
08/16/99        Old Faithful    9:17            1:03    4:27    9:06    135     9:14
08/16/99        Old Faithful    10:45           1:28    4:08    10:41   115     10:49
08/16/99        Old Faithful    12:08           1:23    2:02    ---     115     12:10
08/16/99        Old Faithful    13:11           1:03    4:39    13:07   135     13:08
08/16/99        Old Faithful    14:40           1:29    4:02    14:37   130     14:48
08/16/99        Old Faithful    16:11           1:31    4:06    15:59   130     16:03
08/16/99        Old Faithful    17:33           1:22    4:14    17:27   120     17:35
08/16/99        Old Faithful    19:07           1:34    2:18    18:55   120     19:01


08/16/99        Artemisia       13:20   ie                                      
08/16/99        Aurum   8:28                                            
08/16/99        Aurum   13:18                                           
08/16/99        Aurum   17:53                                           
08/16/99        Aurum   20:33   
08/16/99        Beehive 21:47   vr
08/16/99        Beehive's Indicator     6:30    ie
08/16/99        Beehive's Indicator     8:58    ie
08/16/99        Beehive's Indicator     12:06   ie
08/16/99        Castle  11:45   
08/16/99        Daisy   7:19    
08/16/99        Daisy   9:03    
08/16/99        Daisy   10:51   
08/16/99        Daisy   12:36   
08/16/99        Daisy   14:19   
08/16/99        Daisy   16:03   
08/16/99        Daisy   17:43   
08/16/99        Daisy   19:32   
08/16/99        Depression      6:55    ie
08/16/99        Depression      13:33   
08/16/99        Depression      20:08                           
08/16/99        Fountain        10:07                   d=30    
08/16/99        Giant hot period        ~09:25                  d~4m no Mastiff ovfl    
08/16/99        Grand   19:19                   N/G2Q   d=10m55s
08/16/99        Great Fountain  16:51                   p=1     
08/16/99        Grotto  12:48                           
08/16/99        Grotto  17:56                           
08/16/99        Grotto Fountain 12:45                           
08/16/99        Grotto Fountain 17:52   ie                      
08/16/99        Lion    13:05                   initial 
08/16/99        Lion    14:34                           
08/16/99        Lion    21:02                           
08/16/99        Little Cub      8:16    ie                      
08/16/99        Little Cub      9:32    ie                      
08/16/99        Little Cub      10:58   ie              11:03ie 
08/16/99        Little Cub      13:51   ie                      
08/16/99        Norris Pool     pulled down grass ~1 1/2 ft. above pool lvel; active on 5-20 m  
08/16/99        Norris Pool     intervals when observed between 11:30 and 1330 (ht ~2-3 ft)     
08/16/99        Oblong  13:55   ie
08/16/99        Penta   overnight 815-8/16 (betweeon 20:30 and 06:30)   
08/16/99        Pink    16:37   
08/16/99        Pink    18:50   
08/16/99        Plate   8:41    ie
08/16/99        Plate   12:09   
08/16/99        Plate   20:49   ie
08/16/99        Plume   6:14    
08/16/99        Plume   7:36    
08/16/99        Plume   8:18    
08/16/99        Plume   8:59    
08/16/99        Plume   9:37    
08/16/99        Plume   10:15   
08/16/99        Plume   10:54   
08/16/99        Plume   11:32   ie
08/16/99        Plume   12:12   
08/16/99        Plume   12:53   
08/16/99        Plume   13:31   
08/16/99        Plume   14:13   


08/16/99        Plume   14:57   
08/16/99        Plume   15:36   ie
08/16/99        Plume   16:13   
08/16/99        Plume   17:29   ie
08/16/99        Plume   18:10   
08/16/99        Plume   18:51   
08/16/99        Plume   20:52   
08/16/99        Rift    6:45    
08/16/99        Riverside       12:52   
08/16/99        Riverside       18:41   ie
08/16/99        Sawmill 7:45    
08/16/99        Sawmill 9:07    ie                                      
08/16/99        Sawmill 11:08   ns                                      
08/16/99        Sawmill 17:30   ie                                      
08/16/99        Vent & Turban   6:28    ie                                      
08/16/99        West Triplet    6:43    ie                                      
08/16/99        West Triplet    15:38                   d=32m                   
08/16/99        West Triplet    18:33                                           
08/16/99        White Dome      16:00                                           
08/16/99        White Dome      16:45                                           


08/17/99        Old Faithful    7:21                    4:37    not noted               
08/17/99        Old Faithful    8:54            1:33    4:04    8:45    150     8:57
08/17/99        Old Faithful    10:24           1:30    4:18    10:11           10:17
08/17/99        Old Faithful    12:03           1:39    4:30    11:42   150     11:53
08/17/99        Old Faithful    13:14           1:11    ~4:05   ---     125     13:37
08/17/99        Old Faithful    14:44           1:30    4:25    14:33   110     14:40
08/17/99        Old Faithful    16:13           1:29    4:18    16:07   140     16:14
08/17/99        Old Faithful    17:36           1:23    3:56    17:27   110     17:42
08/17/99        Old Faithful    19:12           1:36    4:20    18:51   155     18:56

08/17/99        Aurum   8:57                                            
08/17/99        Aurum   12:34                                           
08/17/99        Aurum   15:31                                           
08/17/99        Aurum   19:10