<Back to Archives>

<Back to Main Menu>

AUGUST 1999 MONTHLY REVIEW
Anomolously cool temps for August, with a mean temp for the month only 60.8F. By comparison, August 1997, with El Nino just starting to gain strength, mean temps was 64.1F.  A dramatic example of the cool air has been temps in the Central Valley, where highs should be between 95 and 105F, but this month were hard pressed to hit 80 on several occassions. On a brief trip to Lake Tahoe and Reno, we encountered high temps in the San Juaquin Valley of only 74F at 1430..a good 25 degrees below typical. Here in Pacifica, on the 30th, we had a low of 49.9F, the first time in memory we had a sub-50 reading in August. Temps were kept quite moderate by 2 factors...cold upper level cutoff lows kept diving down the coast to off SoCal, then pivoting to the coast in a NE direction, dragging it's cool pool of air and increased stratus along with it, and a return to below normal SST's. Once again, (twice in last three years), significant rains fell in August, a time of year when any rain is noteworthy. 0.19" fell from the 4th-6th from a very Autumn like storm from the GOA, as high temps failed to make it out of the 50's on the 4th and 5th. Overall, 8 days of measurable precip, mostly due to heavy fog and drizzle (except for the 4th-6th). SST is dropping back down  to the middle 50's after briefly hitting the low 60's in late July. The rapid swings in SST is playing havoc with the ocean life - red tide and purple (warmer) surface water blowing up from the south one day, then cooler water from the northwest cools things off and water turns back to typical silty green. Anchovy have been incredibly thick up and down the coast, and Striper fishing has ceased after what only seemd like a two week season in mid July. The whereabouts of the Stripers is a mystery..most theories hold that the fish are still out there, but stuffed to the gills with bait. I for one am not buying that explaination, as I have caught many fish with dozens af bait fish in the stomach. Even when stuffed, an agressive Striper will still hit a lure. My thinking is that the fish have moved out into deeper water to find better water conditions. Flora conditions continue to suffer, and most fruit bearing trees have below normal fruit in both size and quantity. My apple tree has almost no fruit, despite being historically a fine producer.

                   MONTHLY CLIMATOLOGICAL SUMMARY for AUG. 1999


NAME: HOME CITY: Pacifica  STATE: Ca  ELEV: 540'  LAT: 37.36'N  LONG: 122.27'W 


                   TEMPERATURE (°F), RAIN  (in), WIND SPEED (mph)


                                      HEAT  COOL        AVG
    MEAN                              DEG   DEG         WIND                 DOM
DAY TEMP  HIGH   TIME   LOW    TIME   DAYS  DAYS  RAIN  SPEED HIGH   TIME    DIR
------------------------------------------------------------------------------------
 1  60.1  67.1   2:00p  55.3   7:00a   3.8   0.0  0.00   3.8  14.0   3:30p   SSW
 2  62.4  70.3  10:30a  55.7   7:00a   2.0   0.0  0.01   2.7  12.0   2:30p   SSW
 3  59.1  64.4   3:00p  56.3  12:00m   4.7   0.0  0.00   3.9  16.0  12:00p   SSW
 4  56.8  58.8   3:30p  54.9   6:30a   8.2   0.0  0.05   5.2  21.0   4:30p     S
 5  57.0  59.2   2:30p  55.2   5:00a   7.8   0.0  0.07   6.7  22.0   1:30p     S
 6  59.6  64.0   4:00p  57.0   1:30a   4.5   0.0  0.07   4.1  15.0   3:00a   SSW
 7  61.1  67.9   2:30p  57.7   1:30a   2.2   0.0  0.00   2.5  14.0   7:00p    SW
 8  62.1  68.0   1:30p  58.8   1:30a   1.6   0.0  0.00   2.9  13.0   2:00p   SSW
 9  59.8  65.0   2:00p  57.3   6:00a   3.8   0.0  0.00   3.5  13.0   4:00p   SSW
10  60.3  63.9   4:30p  57.3   3:30a   4.4   0.0  0.02   4.3  17.0   4:30p   SSW
11  61.6  66.7   3:00p  58.6  12:00m   2.4   0.0  0.02   2.9  13.0   8:00p   SSW
12  60.6  67.9   2:30p  57.0  12:00m   2.5   0.0  0.00   5.0  21.0   2:00p   SSW
13  60.0  66.9   1:30p  56.9   2:00a   3.1   0.0  0.00   5.5  19.0   2:00p     S
14  60.4  67.9   9:30a  55.8   8:00a   3.2   0.0  0.00   6.0  24.0   4:30p     S
15  62.2  73.7   3:30p  53.0  12:00m   1.7   0.0  0.00   2.3  13.0   1:00a     W
16  60.1  71.6  12:30p  50.9   3:00a   3.8   0.0  0.01   1.4  10.0  12:30p     W
17  58.6  66.5  12:30p  54.2   5:30a   4.7   0.0  0.01   2.7  13.0   1:00p    NW
18  59.1  64.2   3:00p  56.1  12:30a   4.9   0.0  0.00   5.5  19.0   6:00p     S
19  61.0  69.4   1:00p  55.4   8:30a   2.6   0.0  0.00   3.4  13.0   3:00a   SSW
20  58.9  65.9   3:30p  55.4   1:30a   4.3   0.0  0.00   4.6  19.0   8:30p   SSW
21  63.4  73.8  10:00a  55.0   8:00a   0.6   0.0  0.00   2.9  11.0   1:30a   SSW
22  65.1  79.3   2:00p  54.0   6:00a   0.0   1.7  0.00   1.8   9.0   2:00p   SSW
23  64.1  77.0   1:30p  55.0   7:30a   0.0   1.0  0.00   2.2  21.0   2:00a   SSE
24  59.9  69.9   3:30p  53.8   7:00a   3.2   0.0  0.00   1.7   9.0   5:30p     W
25  63.9  74.5   3:00p  52.2   7:00a   1.7   0.0  0.00   1.8  10.0   2:00p   SSW
26  63.7  76.2   1:30p  53.4   6:00a   0.2   0.0  0.00   1.5  14.0  12:00p   SSW
27  65.4  77.1  11:30a  57.2   7:30a   0.0   2.2  0.00   2.0  14.0  12:30p   SSW
28  61.9  75.5   2:00p  57.8   8:30a   0.0   1.7  0.00   2.8  11.0  10:00p   SSW
29  58.5  62.8   4:30p  56.1   7:00a   5.6   0.0  0.00   4.7  16.0   3:00p     S
30  59.0  65.6   1:30p  53.1  12:00m   5.7   0.0  0.00   4.1  24.0   6:30p   SSW
31  57.8  67.7  10:30a  49.9   7:00a   6.2   0.0  0.00   2.9  19.0   4:00p     S
-------------------------------------------------------------------------------------
    60.8  79.3    22    49.9    31    99.0   6.5  0.26   3.5  24.0    14     SSW


Max >= 90.0:  0
Max <= 32.0:  0
Min <= 32.0:  0
Min <=  0.0:  0
Max Rain: 0.07 ON  8/05/99
Days of Rain: 5 (>.01 in) 0 (>.1 in) 0 (>1 in)
Heat Base:  65.0  Cool Base:  65.0  Method: (High + Low) / 2