NOVEMBER 1999 WEATHER REVIEW
A slightly above normal rain total for the month with 4.12". While Pacifica may be near normal, the rest of California except for the far Northwest corner is slightly to much below rainfall to date. SoCal has had virtually zero rain to date. As is common in La Nina years, storms rapidly loose steam as they approach then drop southward along the coast as dry Continental air evoporates the fronts as they advect to the east. Temps were near to slightly above normal, with a minor frost in the low lying areas on the 22nd following a cold trough passage on the 21st that dropped brief, heavy rain. The pattern does not remind of drought years when blocking highs shunt storms completely out of our area. In fact there was no real shortage of rain days, as we had 11 days with rain...however only 1 day exceeded 1" (1.06" on the 7th). Most fronts, despite being juicy up north, are dropping only around 0.5' to 0.75" of precip here. The general pattern seems to be a gradual decrease in upper air dynamics as SST's hover in the low 50's near the coast. Because of mild temps, many trees that started their annual drops in October still have much foliage left...and some vine plants such as our Morninglory is currently in a growth spurt . The local apple tree still has >50% foliage and the remaining leaves are still a healthy green. Also due to the below average rains in the Central Valleys, tule fog has beem limited to just patchy areas, with no widespread valley fogs as yet. If this pattern remains consistant with previous year's, we can expect low rains in December and chilly temps, expecially toward the end of the month. Last year saw some of the coldest temps on record and a very unusual snow in Pacifica on the 20th..which led to a cold, dry early Winter with near-normal rains and continued chilly temps in late Winter and early Spring.
MONTHLY CLIMATOLOGICAL SUMMARY for NOV. 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
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1 66.3 76.5 4:00p 57.5 3:30a 0.0 2.0 0.00 2.9 17.0 6:00a N
2 57.2 64.0 1:00p 50.2 9:30a 7.9 0.0 0.00 1.5 10.0 7:30p SW
3 53.9 56.8 2:00p 49.2 12:00m 12.0 0.0 0.00 1.6 8.0 1:30a SSW
4 56.5 65.6 2:00p 49.1 12:30a 7.7 0.0 0.00 1.9 10.0 9:30a SSW
5 57.3 67.6 3:00p 51.6 1:30a 5.4 0.0 0.01 2.2 20.0 7:30p SSW
6 58.8 64.3 1:30p 54.2 12:30a 5.8 0.0 0.00 6.5 31.0 3:30p S
7 58.2 65.6 1:00p 53.5 6:30p 5.5 0.0 1.06 9.5 42.0 4:30p S
8 55.6 62.0 2:00p 49.3 12:00m 9.3 0.0 0.30 3.9 39.0 1:00a S
9 54.4 62.4 2:00p 47.8 3:00a 9.9 0.0 0.01 1.9 13.0 2:00p SSW
10 58.9 64.1 3:00p 55.2 12:30a 5.3 0.0 0.00 4.4 22.0 3:30p S
11 60.2 68.8 3:30p 53.7 11:00p 3.8 0.0 0.00 1.8 12.0 12:00p S
12 62.2 70.1 3:00p 54.1 12:30a 2.9 0.0 0.00 3.6 16.0 9:30a N
13 60.6 70.3 1:30p 54.4 8:30p 2.6 0.0 0.00 2.1 15.0 2:30a SSW
14 55.4 59.3 12:00p 49.8 5:00a 10.5 0.0 0.07 3.0 22.0 10:30p S
15 60.0 65.8 2:30p 57.3 7:30a 3.4 0.0 0.03 4.5 25.0 8:00a SSW
16 56.4 62.2 12:00p 50.6 10:30p 8.6 0.0 0.67 5.0 36.0 2:00p S
17 52.9 58.8 3:00p 48.2 12:00m 11.5 0.0 0.11 1.6 18.0 1:00a S
18 53.4 60.6 3:00p 47.9 12:30a 10.8 0.0 0.01 2.4 12.0 9:30a N
19 56.1 57.7 7:30a 53.0 2:00a 9.7 0.0 0.66 6.0 44.0 1:00p S
20 54.5 57.9 4:30p 51.8 9:00p 10.2 0.0 0.01 2.3 18.0 2:30p SSW
21 52.3 56.6 1:30p 46.4 12:00m 13.5 0.0 0.15 5.3 27.0 2:30p N
22 49.4 58.4 2:30p 43.5 7:30a 14.0 0.0 0.00 1.4 11.0 3:00p N
23 50.9 59.8 3:00p 45.3 7:30a 12.5 0.0 0.00 0.9 7.0 12:30p N
24 51.9 58.4 3:30p 47.0 2:00a 12.3 0.0 0.00 1.7 14.0 10:30a W
25 53.4 60.4 2:30p 48.1 9:00a 10.8 0.0 0.01 1.5 10.0 11:30a SSW
26 54.8 57.8 2:30p 52.3 8:00a 10.0 0.0 0.01 1.9 11.0 1:00p SSW
27 55.4 57.0 5:00p 54.4 4:00a 9.3 0.0 0.03 0.9 12.0 2:00p N
28 55.1 58.5 4:00p 52.6 8:30a 9.5 0.0 0.01 2.6 17.0 11:00a NNE
29 56.2 60.1 5:00p 52.2 4:30a 8.8 0.0 0.61 6.5 36.0 10:30p S
30 52.9 56.6 1:30p 48.1 10:00p 12.7 0.0 0.36 7.6 31.0 5:00p S
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56.0 76.5 1 43.5 22 255.9 2.0 4.12 3.3 44.0 19 S
Max >= 90.0: 0
Max <= 32.0: 0
Min <= 32.0: 0
Min <= 0.0: 0
Max Rain: 1.06 ON 11/07/99
Days of Rain: 11 (>.01 in) 8 (>.1 in) 1 (>1 in)
Heat Base: 65.0 Cool Base: 65.0 Method: (High + Low) / 2