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OCTOBER 2001 WEATHER REVIEW
Rainy Season opens on 30th!

Except for a four day period between the 12th and 15th when temps peaked in the low to mid 80's, October was generally cooler than normal with a progressively Winter-like pattern developing. Overall, Indian Summer appears to have been limited to only two significant heat waves, first in late Sept .and this one...each lasting only 4-5 days. Often, heat waves this time of year can last for weeks, but not this year. First winter-like rain of 2001-2002 occurred on the 30th, when 2/3" rain fell in Pacifica and up to 2" north in Napa/Sonoma County and the Santa Lucia Mountains to the south. This first real storm of the year bore quite a bit of resemblence to the major T'storm event in mid September as moist air streaming northeast collided with a GOA-type upper low with good support. The main differences were the October storm's moisture was not born out of an old hurricane, but rather a long moisture plume stretching all the way to 15N latitude, not unlike the Pineapple connections typical of later in the Winter, and higher lifted indecies which lowered convective activity, although a few locally intense storms erupted post-frontal in the Central Valley in the aft. This is the first time in October that I've seen such a continuous stream hitting the coast from the favored SW direction..and the high rainfall amounts in the Santa Lucia's reflected this. The Winter storm track has not taken on a defined pattern as yet, as some storms have now started tracking into the drought stricken PacNW as well as others continuing the 2+ year trend of diving N-S down the coast as upper level lows and deep offshore troughs. Will have to reserve judgement as to the upcoming pattern until mid-November at least, assuming that a discernable pattern evolves at all. Flora continues to rapidly develop fall characteristics, with many fruit trees dropping leaves weeks ahead of schedule. Despite earlier optimism, the cold offshore water temps never recovered in time to bring fishing back to normal, and despite a great 3 week period for Stripers in late June/early July, the year will be noted as a moderate-to-poor year overall, and especially poor after the mid-July time-frame.
SPECIAL SOLAR NOTE:
Another intense Solar period occurred during the last two weeks of the month, with 3 X Class flares and several strong 'M' class flares creating high geomagnetic activity. These flares were noteworthy due to their geoeffective positions and high impact to Earth.

                   MONTHLY CLIMATOLOGICAL SUMMARY for OCT. 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  63.6  72.8  12:30p  57.4  11:30p   0.0   0.1  0.00   1.5   9.0  11:30a    SW
 2  59.8  68.2   1:00p  54.9  11:30p   3.5   0.0  0.00   1.3   8.0  12:00p    SW
 3  60.4  73.3   2:00p  51.8   7:30a   2.4   0.0  0.00   1.3   9.0  12:00p   WNW
 4  58.1  66.0  12:00p  52.4   4:30a   5.8   0.0  0.00   3.8  18.0   3:00p     S
 5  59.8  63.9  12:30p  57.3  12:00m   4.4   0.0  0.00   4.5  16.0  12:30p     S
 6  57.5  62.7   3:30p  53.1  11:30p   7.1   0.0  0.00   2.6  14.0   1:00a   ESE
 7  56.7  62.2   3:00p  52.9   2:00a   7.4   0.0  0.00   2.5  13.0   5:30p     S
 8  58.0  64.9   1:00p  52.5  12:00m   6.3   0.0  0.00   2.9  13.0   4:00p     S
 9  58.0  68.8   1:00p  51.0  11:30p   5.1   0.0  0.00   1.5   9.0  12:00p   ENE
10  58.1  72.0   3:00p  49.6   3:30a   4.2   0.0  0.00   1.5   8.0  11:00a   ESE
11  58.6  64.8   3:00p  53.9  12:30a   5.6   0.0  0.00   2.7  18.0   4:30p   SSW
12  67.7  80.2   1:30p  56.1   1:00a   0.0   3.1  0.00   2.6  16.0   5:30a   ESE
13  69.1  82.5   2:00p  61.3  12:30a   0.0   6.9  0.00   1.9  15.0  11:00a   ESE
14  72.7  86.8   2:30p  61.4   1:00a   0.0   9.1  0.00   2.3  19.0  11:00a    SW
15  66.1  78.8   2:30p  54.0  12:00m   0.0   1.4  0.00   1.5  13.0   3:00p   ENE
16  58.1  66.9  11:30a  52.2   3:00a   5.4   0.0  0.00   2.1  13.0   3:00p   SSW
17  59.4  66.8   1:30p  52.9  12:00m   5.1   0.0  0.00   2.8  16.0  12:30p   SSW
18  57.7  66.2   2:30p  52.1   3:30a   5.9   0.0  0.00   1.4  10.0  10:30a    NE
19  56.6  73.2   1:00p  47.0   6:30a   4.9   0.0  0.00   0.8  11.0   1:00p   SSW
20  54.3  60.4   1:30p  48.9   7:00a  10.3   0.0  0.00   1.9  11.0   8:00p   ESE
21  53.6  55.9  12:30p  52.3   7:30a  10.9   0.0  0.00   3.4  14.0  12:00p   SSW
22  56.7  65.2  12:30p  48.9   2:30a   8.0   0.0  0.00   2.3  18.0   7:30p    SE
23  57.0  64.1   1:30p  50.6  12:00m   7.7   0.0  0.00   2.5  15.0   9:30a   SSE
24  59.0  72.5  11:30a  50.5  12:30a   3.5   0.0  0.00   2.1  23.0  10:30a     S
25  65.1  77.6   2:00p  53.0  12:00m   0.0   0.3  0.00   2.5  17.0  11:00a     N
26  55.0  65.1   1:30p  47.4   7:30a   8.8   0.0  0.00   1.5  11.0   5:00p     S
27  58.9  64.0  12:00p  54.5  12:30a   5.8   0.0  0.00   2.1  16.0  12:30p     S
28  59.9  67.2  12:30p  54.3   3:00a   4.3   0.0  0.00   1.2  11.0   4:30p     S
29  62.1  65.8  12:00p  59.8  12:30a   2.2   0.0  0.00   3.3  19.0  12:30p     S
30  59.1  61.7   1:30a  55.9  11:00p   6.2   0.0  0.66   6.3  32.0  10:30a     S
31  55.9  63.8   1:00p  51.0  12:00m   7.6   0.0  0.00   1.3  10.0  10:30a   SSW
-------------------------------------------------------------------------------------
    59.8  86.8    14    47.0    19   148.4  21.0  0.66   2.3  32.0    30       S


Max >= 90.0:  0
Max <= 32.0:  0
Min <= 32.0:  0
Min <=  0.0:  0
Max Rain: 0.66 ON 10/30/01
Days of Rain: 1 (>.01 in) 1 (>.1 in) 0 (>1 in)
Heat Base:  65.0  Cool Base:  65.0  Method: (High + Low) / 2