San Francisco (California, USA) Site History
History Summary
| Station Name | San Francisco |
|---|---|
| Country | USA |
| Latitude | 37° 48.4' N |
| Longitude | 122° 27.9' W |
| GLOSS No. | 158 |
| Time Reference | GMT (hours 00-23) |
| Contributor | US Coastal Geodetic Survey (1901-1972) National Ocean Service (NOS) (1973+) |
| Instrument Type | standard mechanical (1901-1974) analog-to-digital (ADR) recorder (1975-1990) Aquatrak acoustic gauge, NOAA Next Generation Water Level Measuring System (NGWLMS) (1991-) |
| Site of Gauge | |
| Observational Periods | 1901-1996 |
Reference Level
All heights have been referred to the station tide staff zero which is linked to fixed benchmarks.
Tide Gauge Benchmark (TGBM) Description
US C&GS tidal benchmark survey disk stamped '180 1936' set in a concrete wall at the Fort Point Coastguard Station.
Auxiliary Benchmarks
174 1925 4290 J 1976
175 1925 4290 K 1976
176 1925 4290 L 1976
181 1945 4290 M 1982
NO 2 1948
CLARK 1948
Benchmark Relationships
| Benchmark | Elevation | Epoch |
|---|---|---|
| TGBM | 13.24 feet above mean lower low water | 1960-1978 |
| TGBM | 10.11 feet above mean sea level | 1960-1978 |
| TGBM | 8.01 feet above mean high water | 1960-1978 |
Quality Assessment by the UH Sea Level Center
Comments
The daily and monthly means reveal no apparent reference level changes or trends and agree with the nearest stations.
Timing accuracy no better than about ±7 minutes prior to 1930.
Notable Episodic Events
- 01 April 1946: Tsunami from E. Aleutians
- 04-06 November 1952: Tsunami from Kamchatka
- 09-10 March 1957: Tsunami from S.C. Chile
- 28-29 March 1964: Tsunami from Alaska
| Year | CI(%) | Missing Data | Replaced Gaps or Bad Data | Questionable Fluctuations |
|---|---|---|---|---|
| 1901 | 99 | none | none | none |
| 1902 | 100 | none | none | none |
| 1903 | 100 | none | none | 201-243 |
| 1904 | 100 | none | none | 221-225,252-270, 277-279,299-301 |
| 1905 | 100 | none | none | 249-251 |
| 1906 | 100 | none | none | none |
| 1907 | 100 | none | none | none |
| 1908 | 100 | none | none | none |
| 1909 | 100 | none | none | none |
| 1910 | 100 | none | none | none |
| 1911 | 100 | none | none | none |
| 1912 | 100 | none | none | none |
| 1913 | 100 | none | none | none |
| 1914 | 100 | none | none | none |
| 1915 | 100 | none | none | none |
| 1916 | 100 | none | (18)018-(11)019 (22)174-(05)175 (22)201-(13)202 (06)218-(05)219 (00)223-(10)223 | none |
| 1917 | 100 | none | none | none |
| 1918 | 100 | none | none | 331 |
| 1919 | 100 | none | none | 32-34 |
| 1920 | 100 | none | none | none |
| 1921 | 100 | none | none | none |
| 1922 | 100 | none | (12)137-(21)137 | 175-179 |
| 1923 | 100 | none | none | none |
| 1924 | 100 | none | (00)172-(16)172 (22)362-(11)363 | none |
| 1925 | 100 | none | (09)129-(18)129 (08)186-(05)187 | none |
| 1926 | 100 | none | (00)064-(10)064 | 343-349 |
| 1927 | 100 | none | (08)183-(16)183 (12)206-(23)206 | none |
| 1928 | 100 | none | none | 117-122,360-361 |
| 1929 | 100 | none | none | 23-26 |
| 1930 | 100 | none | (04)272-(18)272 (19)350-(06)351 | 320-321 |
| 1931 | 100 | none | none | none |
| 1932 | 100 | none | none | none |
| 1933 | 100 | none | none | none |
| 1934 | 100 | none | none | none |
| 1935 | 100 | none | none | none |
| 1936 | 100 | none | none | none |
| 1937 | 100 | none | none | none |
| 1938 | 100 | none | none | none |
| 1939 | 100 | none | none | none |
| 1940 | 100 | none | none | none |
| 1941 | 100 | none | none | none |
| 1942 | 100 | none | none | none |
| 1943 | 100 | none | none | none |
| 1944 | 100 | none | none | 201-204 |
| 1945 | 100 | none | none | none |
| 1946 | 94 | 157-179 | none | 205-213 |
| 1947 | 100 | none | none | 181 |
| 1948 | 100 | none | none | none |
| 1949 | 100 | none | none | none |
| 1950 | 100 | none | (22)299-(05)300 | none |
| 1951 | 100 | none | none | none |
| 1952 | 100 | none | none | none |
| 1953 | 100 | none | none | none |
| 1954 | 100 | none | none | none |
| 1955 | 100 | none | (01)252-(09)252 | none |
| 1956 | 100 | none | none | none |
| 1957 | 100 | none | none | none |
| 1958 | 100 | none | none | none |
| 1959 | 100 | none | (01)335-(18)335 | none |
| 1960 | 100 | none | (16)017-(10)018 | none |
| 1961 | 100 | none | none | none |
| 1962 | 100 | none | (20)021-(10)022 (14)310-(23)310 (07)327-(19)327 | none |
| 1963 | 100 | none | (17)152-(08)153 | 26-27,168 |
| 1964 | 100 | none | none | none |
| 1965 | 98 | 204-213 | none | none |
| 1966 | 100 | none | none | none |
| 1967 | 97 | 313-326 | (23)306-(15)307 | 51-82,358 |
| 1968 | 100 | none | (17)276-(06)277 (17)345-(04)346 | 63 |
| 1969 | 97 | 244-246,249-251 | (17)005-(08)006 | 127-151,258-265 |
| 1970 | 99 | 65-70 | (00)011-(08)011 | none |
| 1971 | 100 | none | (00)304-(23)304 | 364-365 |
| 1972 | 96 | 22-23,26-33,61-67 | (08)001-(21)001 (04)025-(13)025 | none |
| 1973 | 100 | none | (13)071-(23)071 | none |
| 1974 | 100 | none | (21)004-(08)005 (12)013-(07)014 (09)096-(21)096 (14)262-(21)262 | 363 |
| 1975 | 100 | none | none | none |
| 1976 | 100 | none | none | none |
| 1977 | 98 | 18-24 | (00)214-(19)214 (20)217-(04)218 (21)218-(04)219 (21)219-(05)220 (23)220-(06)221 (23)221-(06)222 (00)223-(07)223 | none |
| 1978 | 84 | 1-60 | none | none |
| 1979 | 100 | none | (16)009-(00)010 | 101-118 |
| 1980 | 100 | none | (07)296-(14)296 | none |
| 1981 | 100 | none | none | none |
| 1982 | 100 | none | none | none |
| 1983 | 100 | none | none | none |
| 1984 | 100 | none | none | none |
| 1985 | 100 | none | none | 248-249 |
| 1986 | 100 | none | none | none |
| 1987 | 100 | none | none | 139-140,150-153 |
| 1988 | 100 | none | none | none |
| 1989 | 100 | none | none | none |
| 1990 | 100 | none | none | none |
| 1991 | 100 | none | none | none |
| 1992 | 100 | none | none | none |
| 1993 | 100 | none | none | none |
| 1994 | 100 | none | none | none |
| 1995 | 100 | none | none | none |
| 1996 | 100 | none | none | none |
