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AUGUST 2001 Wx REVIEW

Note loss of data for first two weeks of the month.

Unless otherwise noted, weather for August was F&LCN&M with not even a hint of tropical moisture. Wet fogs prevailed, with no significant warm spell all month. As for the flora/fauna/enviornment scene, ..widespread blazes throught the West and Northwest, with major fires in Washington, Oregon, California and Montana...but read into this the lack of summer rains over the mountains and darn near critical dryness over the last 2yrs in the Northwest. Local tree growth, shrubbery/etc however has remained green and strong so far , mainly due from normal rains for the year here locally. I forget if I mentioned it, but rainyear 2000-2001 (July1-June30) had San Francisco precip totals in a narrow normal zone with much below rains to the north and much above average rains in the southland. But isn't that typical of strong El Nino patterns you ask? Indeed it is. However the last two year's Central Pacific coastal SST's have been consistently near to slightly below normal (La Nina evolving into La Nada into the current El micro-Nino), likely a result of cold air continuing to plunge N-S off the coast and a strong Japan Cuurrent running straight down the coast. The pattern became so pronounced that...surprise in August, it's getting really chilly! Santa Rosa had a low of 45F on the 19th!!!. In Pacifica, I've noted 2 other sub-50F low readings as well in the last 2 weeks. What's interesting is that these temps are well BELOW SST temps. Usually with summer onshore flow our nightime temps are within 1-2degrees of the local SST,. It takes an unusual set of circumstances (plunging upper level lows) to drive surface cold air this far south. Freezing levels were below 10,000' up north in Washington and snow fell over the higher mountains farther south. Unfortunately, the rain/snow did little to quench the bigger forest fires still raging since last month. An X-Class solar flare + CME happened on the 25th. Only minor aurora and solar wind shock, however. SST's remained constant in the mid-upper 50's most everywhere, with 60F+ retreating to > 25 miles offshore.

                   MONTHLY CLIMATOLOGICAL SUMMARY for AUG. 2001


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
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14  57.4  63.8   2:30p  54.7  12:00m   5.8   0.0  0.00   2.9  13.0   9:00a   SSW
15  55.4  58.5   2:00p  53.8   5:30a   8.8   0.0  0.01   3.3  12.0   2:00p   SSW
16  59.9  70.8  12:00p  52.1  11:30p   3.5   0.0  0.00   1.9  10.0  12:00p   SSW
17  59.2  71.9   9:00a  50.3   5:30a   3.9   0.0  0.01   2.1  12.0   4:00p     S
18  60.5  70.5   9:00a  52.6   6:00a   3.5   0.0  0.00   2.4  14.0   4:00p   WNW
19  56.3  63.4  12:00p  50.9   5:30a   7.8   0.0  0.00   2.6  16.0   8:30p   NNE
20  55.4  57.3   6:00p  53.3   6:30a   9.7   0.0  0.00   5.7  24.0   8:00p   SSW
21  57.4  63.3   1:30p  52.8   7:30a   7.0   0.0  0.00   5.7  20.0   1:30p     S
22  61.9  69.4   3:30p  57.4   2:30a   1.6   0.0  0.02   3.7  17.0   1:00p   SSW
23  65.5  74.9   9:00a  59.9   4:30a   0.0   2.4  0.00   2.3  11.0   2:00p   SSW
24  58.9  65.4   4:00p  54.4  12:00m   5.1   0.0  0.00   2.5  12.0   5:30p   SSW
25  59.8  69.0   9:30a  51.9   5:30a   4.5   0.0  0.01   2.5  14.0   3:00p     S
26  59.9  70.6  12:30p  54.1  12:00m   2.7   0.0  0.00   2.6  12.0   5:00p   SSW
27  60.7  71.1  11:30a  51.5   3:30a   3.7   0.0  0.00   2.0  12.0   4:00p     S
28  59.9  69.8   9:30a  51.9   4:00a   4.1   0.0  0.00   3.1  20.0   5:30p     S
29  58.8  67.5  12:00p  54.1   6:30a   4.2   0.0  0.00   6.5  28.0   1:00p     S
30  58.3  64.3   2:30p  54.6   8:00a   5.5   0.0  0.00   4.9  25.0   1:30p     S
31  60.2  75.7   2:00p  51.5   6:00a   1.4   0.0  0.00   2.0  12.0   3:00p   SSW
-------------------------------------------------------------------------------------
    59.2  75.7    31    50.3    17    82.9   2.4  0.05   1.9  28.0    29     SSW


Max >= 90.0:  0
Max <= 32.0:  0
Min <= 32.0:  0
Min <=  0.0:  0
Max Rain: 0.02 ON  8/22/01
Days of Rain: 1 (>.01 in) 0 (>.1 in) 0 (>1 in)
Heat Base:  65.0  Cool Base:  65.0  Method: (High + Low) / 2