Tidal Current Predictions

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	January, 2009
Flood Direction, 066 True.	Ebb (-)Direction, 284 True.
NOAA, National Ocean Service

Current is somewhat rotary, turning counterclockwise.

	Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current
Day	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots
1		0134	+2.2	0417	0744	-1.5	1049	1333	+1.2	1512	1842	-2.4	2306
2		0214	+2.1	0449	0825	-1.7	1145	1428	+1.0	1610	1936	-2.0	2341
3		0259	+2.0	0526	0907	-1.8	1253	1532	+1.0	1726	2112	-1.5
4	0022	0349	+1.9	0608	0952	-2.1	1419	1645	+1.0	1857	2226	-1.3
5	0110	0443	+1.9	0655	1041	-2.5	1538	1802	+1.3	2025	2331	-1.1
6	0206	0539	+1.9	0743	1133	-3.1	1641	1908	+1.6	2139
7		0032	-1.1	0308	0636	+2.0	0832	1226	-3.5	1736	2003	+2.0	2241
8		0129	-1.3	0412	0730	+2.1	0921	1317	-4.1	1826	2053	+2.3	2333
9		0222	-1.5	0517	0822	+2.2	1011	1407	-4.3	1912	2141	+2.6
10	0021	0316	-1.7	0620	0914	+2.3	1101	1457	-4.6	1958	2227	+2.8
11	0107	0409	-1.8	0721	1006	+2.3	1152	1550	-4.6	2041	2313	+2.9
12	0150	0500	-2.1	0820	1058	+2.2	1244	1642	-4.3	2123	2356	+2.9
13	0233	0549	-2.2	0919	1149	+2.1	1336	1733	-3.9	2202
14		0040	+2.7	0314	0637	-2.4	1017	1241	+1.9	1430	1824	-3.4	2239
15		0123	+2.5	0357	0727	-2.2	1119	1336	+1.6	1529	1919	-2.7	2314
16		0209	+2.2	0441	0819	-2.2	1227	1438	+1.3	1636	2020	-2.0	2348
17		0257	+2.0	0528	0913	-2.1	1344	1552	+1.1	1800	2123	-1.4
18	0024	0349	+1.8	0619	1009	-2.1	1501	1716	+1.1	1941	2225	-1.0
19	0109	0446	+1.5	0712	1107	-2.2	1609	1831	+1.3	2110	2326	-0.8
20	0208	0545	+1.5	0802	1205	-2.5	1704	1929	+1.5	2215
21		0026	-0.8	0319	0640	+1.5	0848	1257	-2.8	1750	2016	+1.8	2306
22		0120	-1.0	0425	0728	+1.5	0930	1342	-3.1	1830	2057	+2.0	2348
23		0209	-1.1	0520	0812	+1.6	1010	1424	-3.4	1906	2135	+2.2
24	0025	0256	-1.4	0609	0854	+1.7	1049	1504	-3.5	1939	2210	+2.3
25	0059	0341	-1.5	0653	0935	+1.8	1128	1544	-3.6	2010	2242	+2.4
26	0128	0425	-1.7	0734	1016	+1.8	1207	1622	-3.6	2038	2313	+2.4
27	0154	0504	-1.8	0814	1058	+1.8	1246	1657	-3.5	2105	2345	+2.4
28	0219	0540	-2.0	0854	1140	+1.7	1327	1725	-3.2	2130
29		0019	+2.4	0244	0608	-2.0	0934	1223	+1.6	1410	1747	-2.9	2158
30		0055	+2.3	0313	0622	-2.1	1018	1309	+1.5	1458	1816	-2.4	2228
31		0134	+2.2	0346	0643	-2.2	1107	1401	+1.3	1555	1901	-2.0	2302

All times listed are in Local Time, Daylight Saving Time has been applied when appropriate. All speeds are in knots.

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	February, 2009
Flood Direction, 066 True.	Ebb (-)Direction, 284 True.
NOAA, National Ocean Service

Current is somewhat rotary, turning counterclockwise.

	Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current
Day	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots
1		0219	+2.0	0426	0725	-2.4	1207	1504	+1.2	1708	2018	-1.4	2342
2		0309	+1.9	0513	0821	-2.5	1331	1618	+1.2	1841	2157	-1.0
3	0031	0406	+1.8	0608	0933	-2.7	1506	1739	+1.3	2019	2310	-0.8
4	0134	0509	+1.8	0708	1058	-2.9	1619	1850	+1.7	2135
5		0016	-1.0	0250	0613	+1.8	0808	1213	-3.4	1717	1947	+2.1	2231
6		0115	-1.4	0410	0713	+2.0	0905	1314	-3.9	1808	2035	+2.4	2317
7		0209	-1.7	0524	0810	+2.2	1001	1408	-4.2	1854	2121	+2.7	2358
8		0300	-2.1	0628	0903	+2.3	1055	1459	-4.3	1938	2205	+2.8
9	0037	0349	-2.4	0725	0956	+2.3	1148	1549	-4.2	2019	2248	+2.9
10	0115	0436	-2.7	0819	1047	+2.3	1240	1637	-3.9	2058	2329	+2.8
11	0152	0521	-2.8	0912	1137	+2.2	1332	1724	-3.5	2134
12		0009	+2.7	0230	0604	-2.8	1004	1227	+2.0	1425	1811	-2.9	2206
13		0049	+2.4	0308	0647	-2.7	1057	1318	+1.8	1522	1900	-2.4	2236
14		0130	+2.1	0349	0733	-2.4	1155	1416	+1.4	1626	1955	-1.7	2305
15		0215	+1.8	0432	0826	-2.1	1305	1526	+1.2	1749	2056	-1.1	2338
16		0304	+1.5	0523	0926	-2.0	1422	1649	+1.1	1934	2159	-0.8
17	0022	0401	+1.3	0621	1029	-2.0	1533	1806	+1.3	2100	2302	-0.7
18	0126	0504	+1.2	0722	1133	-2.1	1631	1905	+1.5	2159
19		0003	-0.7	0257	0609	+1.2	0818	1230	-2.4	1717	1950	+1.8	2242
20		0058	-1.0	0416	0705	+1.3	0907	1319	-2.8	1756	2029	+2.0	2317
21		0147	-1.4	0514	0751	+1.5	0951	1401	-3.1	1831	2102	+2.2	2346
22		0230	-1.7	0601	0834	+1.6	1033	1441	-3.4	1902	2133	+2.3
23	0011	0311	-2.0	0642	0915	+1.8	1113	1520	-3.5	1931	2203	+2.4
24	0033	0349	-2.1	0719	0956	+1.8	1154	1557	-3.4	1958	2234	+2.4
25	0056	0422	-2.4	0756	1038	+1.9	1234	1632	-3.2	2024	2307	+2.4
26	0121	0447	-2.5	0832	1120	+1.9	1316	1702	-2.9	2051	2342	+2.4
27	0148	0458	-2.8	0909	1203	+1.9	1401	1727	-2.7	2120
28		0019	+2.4	0219	0520	-2.9	0951	1249	+1.8	1450	1758	-2.2	2153

All times listed are in Local Time, Daylight Saving Time has been applied when appropriate. All speeds are in knots.

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	March, 2009
Flood Direction, 066 True.	Ebb (-)Direction, 284 True.
NOAA, National Ocean Service

Current is somewhat rotary, turning counterclockwise.

	Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current
Day	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots
1		0059	+2.2	0256	0555	-3.1	1039	1341	+1.6	1549	1844	-1.7	2229
2		0145	+2.0	0338	0640	-3.1	1137	1443	+1.5	1702	2012	-1.1	2313
3		0237	+1.8	0429	0737	-2.9	1257	1556	+1.4	1837	2143	-0.8
4	0008	0338	+1.7	0530	0852	-2.8	1434	1716	+1.5	2013	2255	-1.0
5	0124	0446	+1.6	0640	1041	-2.9	1551	1827	+1.9	2119
6		0001	-1.3	0259	0556	+1.7	0751	1203	-3.2	1651	1924	+2.2	2207
7		0100	-1.7	0426	0702	+1.9	0856	1306	-3.5	1742	2012	+2.5	2247
8		0152	-2.2	0633	0901	+2.1	1057	1459	-3.8	1928	2156	+2.7
9	0023	0340	-2.7	0731	0955	+2.3	1153	1548	-3.8	2011	2238	+2.8
10	0059	0424	-2.9	0823	1046	+2.4	1247	1636	-3.6	2050	2319	+2.7
11	0134	0507	-3.2	0913	1136	+2.4	1339	1722	-3.4	2127	2358	+2.6
12	0209	0548	-3.2	1000	1224	+2.2	1430	1808	-2.9	2200
13		0037	+2.4	0245	0627	-3.1	1047	1312	+2.1	1522	1853	-2.5	2230
14		0115	+2.2	0321	0704	-2.8	1134	1401	+1.8	1618	1941	-2.0	2258
15		0154	+1.9	0359	0742	-2.5	1223	1454	+1.5	1722	2035	-1.4	2328
16		0236	+1.6	0440	0830	-2.2	1321	1558	+1.3	1844	2135	-1.0
17	0005	0323	+1.3	0527	0940	-2.0	1430	1714	+1.3	2023	2237	-0.7
18	0054	0419	+1.0	0626	1050	-1.8	1541	1829	+1.3	2137	2339	-0.7
19	0209	0525	+0.9	0736	1156	-2.0	1641	1929	+1.5	2227
20		0039	-0.8	0356	0637	+1.0	0845	1256	-2.1	1729	2014	+1.8	2304
21		0133	-1.3	0512	0741	+1.2	0943	1347	-2.5	1809	2049	+2.0	2332
22		0219	-1.7	0605	0831	+1.4	1032	1432	-2.8	1844	2120	+2.1	2355
23		0300	-2.1	0649	0914	+1.6	1117	1513	-2.9	1916	2150	+2.2
24	0015	0336	-2.4	0727	0955	+1.8	1200	1551	-2.9	1945	2220	+2.3
25	0037	0408	-2.7	0802	1037	+2.0	1242	1629	-2.9	2013	2254	+2.4
26	0101	0433	-2.9	0837	1119	+2.0	1324	1705	-2.8	2041	2330	+2.4
27	0129	0447	-3.2	0912	1202	+2.1	1408	1740	-2.5	2112
28		0008	+2.4	0201	0509	-3.6	0951	1246	+2.1	1456	1814	-2.2	2145
29		0048	+2.3	0236	0543	-3.8	1034	1333	+2.0	1549	1853	-1.8	2222
30		0131	+2.2	0316	0624	-3.8	1123	1426	+1.9	1650	1951	-1.4	2305
31		0218	+2.0	0402	0712	-3.6	1221	1526	+1.8	1803	2117	-1.1	2356

All times listed are in Local Time, Daylight Saving Time has been applied when appropriate. All speeds are in knots.

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	April, 2009
Flood Direction, 066 True.	Ebb (-)Direction, 284 True.
NOAA, National Ocean Service

Current is somewhat rotary, turning counterclockwise.

	Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current
Day	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots
1		0313	+1.7	0456	0809	-3.2	1334	1636	+1.8	1932	2232	-1.0
2	0103	0417	+1.5	0601	0929	-2.8	1500	1750	+1.8	2052	2340	-1.1
3	0236	0528	+1.5	0719	1128	-2.8	1615	1858	+2.0	2148
4		0044	-1.7	0418	0644	+1.5	0839	1246	-2.9	1716	1955	+2.3	2231
5		0141	-2.2	0534	0753	+1.8	0951	1349	-3.1	1809	2043	+2.5	2309
6		0231	-2.8	0634	0853	+2.0	1055	1442	-3.2	1855	2126	+2.6	2344
7		0315	-3.2	0727	0946	+2.2	1153	1530	-3.1	1937	2207	+2.6
8	0019	0357	-3.5	0816	1037	+2.4	1247	1617	-2.9	2016	2247	+2.5
9	0053	0437	-3.5	0902	1125	+2.4	1339	1703	-2.7	2052	2326	+2.4
10	0128	0515	-3.5	0947	1212	+2.3	1430	1749	-2.2	2124
11		0004	+2.2	0202	0552	-3.4	1030	1258	+2.2	1522	1836	-2.0	2154
12		0043	+2.0	0238	0626	-3.1	1112	1344	+2.0	1619	1924	-1.5	2225
13		0121	+1.7	0314	0658	-2.8	1155	1433	+1.8	1722	2017	-1.1	2300
14		0202	+1.4	0353	0733	-2.4	1240	1528	+1.5	1837	2115	-0.8	2343
15		0248	+1.2	0438	0847	-2.1	1332	1631	+1.5	1957	2215	-0.8
16	0040	0343	+0.9	0533	1010	-1.8	1432	1736	+1.5	2058	2313	-0.8
17	0203	0448	+0.8	0644	1117	-1.8	1532	1834	+1.5	2142
18		0009	-1.1	0346	0601	+0.8	0805	1216	-2.0	1623	1921	+1.8	2213
19		0101	-1.5	0457	0712	+1.0	0915	1310	-2.1	1707	1958	+1.9	2237
20		0146	-2.0	0549	0807	+1.3	1012	1358	-2.2	1744	2031	+2.0	2257
21		0225	-2.4	0631	0853	+1.5	1101	1441	-2.4	1818	2104	+2.2	2319
22		0258	-2.8	0710	0936	+1.8	1147	1521	-2.4	1851	2139	+2.2	2344
23		0325	-3.2	0746	1018	+2.0	1232	1601	-2.4	1924	2216	+2.3
24	0014	0343	-3.5	0822	1102	+2.2	1317	1641	-2.2	1958	2256	+2.4
25	0046	0404	-3.9	0900	1147	+2.2	1405	1722	-2.0	2035	2338	+2.3
26	0123	0437	-4.2	0941	1233	+2.3	1455	1807	-1.8	2115
27		0021	+2.2	0203	0518	-4.3	1027	1321	+2.3	1550	1859	-1.5	2200
28		0108	+2.1	0247	0603	-4.3	1116	1413	+2.2	1651	2000	-1.4	2251
29		0158	+1.9	0336	0653	-3.9	1212	1510	+2.2	1759	2109	-1.3	2352
30		0254	+1.6	0433	0753	-3.4	1313	1613	+2.1	1912	2217	-1.3

All times listed are in Local Time, Daylight Saving Time has been applied when appropriate. All speeds are in knots.

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	May, 2009
Flood Direction, 066 True.	Ebb (-)Direction, 284 True.
NOAA, National Ocean Service

Current is somewhat rotary, turning counterclockwise.

	Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current
Day	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots
1	0111	0359	+1.4	0541	0924	-2.8	1422	1718	+2.1	2016	2320	-1.5
2	0251	0513	+1.3	0702	1110	-2.5	1532	1822	+2.2	2107
3		0021	-2.1	0421	0631	+1.5	0829	1222	-2.5	1633	1919	+2.2	2150
4		0117	-2.7	0530	0744	+1.7	0948	1325	-2.4	1728	2009	+2.4	2229
5		0206	-3.1	0628	0845	+2.0	1056	1419	-2.4	1816	2054	+2.4	2305
6		0250	-3.5	0720	0937	+2.2	1155	1508	-2.4	1859	2135	+2.4	2341
7		0330	-3.6	0807	1027	+2.3	1249	1555	-2.1	1938	2215	+2.2
8	0016	0409	-3.6	0851	1114	+2.3	1341	1642	-2.0	2014	2255	+2.1
9	0051	0447	-3.6	0933	1200	+2.3	1432	1730	-1.7	2048	2334	+2.0
10	0126	0525	-3.5	1013	1244	+2.2	1524	1818	-1.5	2121
11		0013	+1.8	0202	0601	-3.4	1052	1327	+2.1	1618	1907	-1.3	2158
12		0053	+1.5	0238	0635	-3.1	1129	1410	+2.0	1714	1958	-1.1	2240
13		0134	+1.3	0317	0710	-2.8	1205	1455	+1.8	1813	2052	-1.0	2328
14		0219	+1.1	0359	0804	-2.4	1242	1544	+1.8	1911	2147	-1.0
15	0027	0311	+0.9	0450	0927	-2.1	1324	1634	+1.7	2002	2241	-1.1
16	0144	0412	+0.8	0556	1034	-1.8	1410	1724	+1.7	2040	2333	-1.4
17	0315	0522	+0.8	0719	1133	-1.7	1459	1812	+1.8	2109
18		0022	-1.7	0429	0635	+0.9	0840	1229	-1.7	1548	1857	+1.8	2133
19		0106	-2.1	0524	0740	+1.2	0948	1320	-1.7	1632	1939	+2.0	2159
20		0145	-2.7	0610	0831	+1.5	1045	1407	-1.8	1714	2020	+2.0	2227
21		0218	-3.1	0651	0917	+1.8	1137	1452	-1.8	1755	2101	+2.2	2259
22		0243	-3.5	0731	1002	+2.0	1225	1536	-1.8	1837	2143	+2.2	2335
23		0307	-4.1	0812	1047	+2.2	1314	1621	-1.7	1920	2227	+2.3
24	0013	0338	-4.3	0854	1134	+2.4	1404	1709	-1.7	2006	2313	+2.2
25	0055	0418	-4.6	0937	1221	+2.5	1455	1801	-1.5	2055
26		0001	+2.2	0140	0503	-4.6	1023	1309	+2.6	1548	1855	-1.5	2149
27		0050	+2.1	0228	0553	-4.5	1110	1358	+2.5	1643	1952	-1.5	2248
28		0142	+1.9	0320	0646	-4.1	1158	1450	+2.4	1739	2052	-1.5	2356
29		0239	+1.7	0418	0749	-3.4	1249	1545	+2.3	1836	2154	-1.7
30	0117	0343	+1.4	0526	0923	-2.8	1343	1643	+2.2	1931	2253	-2.0
31	0248	0457	+1.3	0649	1046	-2.2	1442	1742	+2.2	2022	2351	-2.4

All times listed are in Local Time, Daylight Saving Time has been applied when appropriate. All speeds are in knots.

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	June, 2009
Flood Direction, 066 True.	Ebb (-)Direction, 284 True.
NOAA, National Ocean Service

Current is somewhat rotary, turning counterclockwise.

	Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current
Day	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots
1	0411	0617	+1.3	0820	1154	-2.0	1542	1840	+2.1	2108
2		0047	-2.7	0520	0733	+1.5	0946	1257	-1.8	1639	1933	+2.1	2150
3		0139	-3.1	0618	0835	+1.8	1058	1354	-1.7	1731	2021	+2.1	2229
4		0225	-3.4	0709	0927	+2.0	1159	1445	-1.5	1817	2105	+2.0	2307
5		0307	-3.5	0755	1016	+2.2	1253	1534	-1.5	1859	2146	+2.0	2344
6		0347	-3.6	0838	1101	+2.2	1343	1622	-1.4	1939	2227	+1.9
7	0021	0427	-3.6	0917	1145	+2.3	1431	1711	-1.4	2018	2307	+1.8
8	0057	0506	-3.6	0954	1226	+2.3	1518	1759	-1.4	2057	2348	+1.7
9	0134	0546	-3.5	1029	1305	+2.2	1604	1846	-1.3	2139
10		0028	+1.5	0212	0624	-3.4	1101	1342	+2.2	1647	1934	-1.3	2224
11		0110	+1.4	0251	0702	-3.1	1131	1419	+2.1	1728	2022	-1.3	2312
12		0154	+1.3	0333	0742	-2.8	1200	1458	+2.0	1807	2111	-1.3
13	0005	0242	+1.0	0420	0838	-2.4	1232	1540	+1.9	1843	2200	-1.4
14	0107	0338	+0.9	0519	0945	-2.0	1308	1624	+1.8	1919	2248	-1.5
15	0223	0443	+0.8	0635	1047	-1.5	1349	1712	+1.8	1953	2335	-1.8
16	0345	0555	+0.8	0803	1146	-1.4	1435	1801	+1.8	2028
17		0019	-2.2	0452	0708	+1.0	0925	1243	-1.3	1525	1851	+1.9	2105
18		0100	-2.7	0546	0809	+1.4	1032	1336	-1.3	1617	1941	+2.0	2143
19		0137	-3.2	0634	0900	+1.8	1130	1427	-1.3	1708	2029	+2.1	2223
20		0211	-3.6	0718	0947	+2.0	1222	1516	-1.4	1801	2117	+2.2	2306
21		0247	-4.2	0802	1033	+2.3	1311	1605	-1.4	1856	2205	+2.2	2350
22		0328	-4.5	0846	1120	+2.5	1358	1657	-1.5	1952	2255	+2.2
23	0037	0413	-4.6	0930	1206	+2.7	1445	1750	-1.7	2049	2345	+2.2
24	0126	0503	-4.6	1013	1252	+2.8	1532	1841	-1.8	2148
25		0036	+2.1	0217	0556	-4.3	1056	1338	+2.8	1618	1933	-2.0	2250
26		0129	+2.0	0311	0652	-3.9	1138	1424	+2.7	1704	2027	-2.1	2356
27		0224	+1.8	0409	0755	-3.2	1220	1514	+2.4	1752	2123	-2.1
28	0109	0327	+1.5	0516	0909	-2.5	1303	1606	+2.2	1842	2220	-2.2
29	0231	0439	+1.3	0636	1020	-2.0	1349	1701	+2.0	1934	2317	-2.4
30	0353	0600	+1.3	0811	1125	-1.5	1442	1758	+1.9	2025

All times listed are in Local Time, Daylight Saving Time has been applied when appropriate. All speeds are in knots.

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	July, 2009
Flood Direction, 066 True.	Ebb (-)Direction, 284 True.
NOAA, National Ocean Service

Current is somewhat rotary, turning counterclockwise.

	Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current
Day	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots
1		0015	-2.5	0504	0719	+1.4	0945	1228	-1.3	1541	1856	+1.8	2113
2		0111	-2.8	0604	0823	+1.7	1100	1328	-1.1	1643	1950	+1.8	2157
3		0203	-3.1	0655	0915	+1.9	1200	1423	-1.1	1739	2037	+1.8	2239
4		0248	-3.2	0739	1001	+2.1	1250	1513	-1.1	1830	2121	+1.8	2319
5		0329	-3.5	0819	1044	+2.2	1334	1602	-1.3	1916	2203	+1.8	2357
6		0410	-3.6	0856	1124	+2.3	1415	1649	-1.4	2000	2244	+1.8
7	0036	0451	-3.6	0929	1201	+2.4	1453	1735	-1.4	2042	2325	+1.7
8	0114	0531	-3.6	1000	1235	+2.4	1528	1820	-1.5	2124
9		0006	+1.6	0153	0609	-3.5	1029	1308	+2.4	1559	1902	-1.7	2206
10		0048	+1.5	0232	0646	-3.2	1055	1340	+2.3	1628	1943	-1.7	2249
11		0130	+1.4	0314	0719	-2.9	1121	1415	+2.2	1657	2023	-1.7	2334
12		0215	+1.3	0400	0751	-2.4	1150	1453	+2.1	1727	2103	-1.7
13	0024	0307	+1.1	0454	0837	-2.0	1222	1535	+2.0	1802	2143	-1.8
14	0125	0407	+1.0	0602	0956	-1.4	1258	1622	+1.8	1842	2226	-2.0
15	0245	0517	+0.9	0731	1105	-1.1	1342	1714	+1.8	1927	2314	-2.2
16	0411	0635	+1.1	0906	1209	-0.8	1434	1810	+1.8	2016
17		0007	-2.7	0518	0746	+1.4	1024	1310	-1.0	1535	1908	+1.8	2106
18		0102	-3.2	0614	0842	+1.8	1125	1407	-1.1	1640	2004	+2.0	2156
19		0154	-3.6	0702	0931	+2.2	1214	1500	-1.3	1746	2057	+2.1	2246
20		0243	-4.2	0748	1017	+2.4	1257	1551	-1.5	1851	2149	+2.2	2337
21		0332	-4.5	0832	1102	+2.7	1339	1641	-1.8	1953	2241	+2.3
22	0028	0422	-4.5	0914	1146	+2.9	1420	1731	-2.1	2051	2333	+2.3
23	0119	0514	-4.5	0955	1229	+2.9	1500	1819	-2.4	2149
24		0024	+2.2	0212	0605	-4.2	1035	1312	+2.9	1540	1906	-2.5	2246
25		0116	+2.1	0306	0656	-3.6	1113	1355	+2.7	1622	1954	-2.5	2346
26		0210	+1.8	0404	0749	-2.9	1149	1440	+2.4	1705	2044	-2.5
27	0050	0309	+1.5	0508	0850	-2.2	1224	1527	+2.1	1751	2140	-2.4
28	0205	0418	+1.3	0626	0955	-1.5	1301	1619	+1.8	1843	2238	-2.2
29	0326	0540	+1.2	0806	1059	-1.1	1345	1716	+1.6	1939	2340	-2.2
30	0440	0702	+1.3	0945	1203	-0.8	1444	1818	+1.5	2036
31		0042	-2.4	0542	0806	+1.5	1057	1305	-0.8	1603	1920	+1.5	2128

All times listed are in Local Time, Daylight Saving Time has been applied when appropriate. All speeds are in knots.

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	August, 2009
Flood Direction, 066 True.	Ebb (-)Direction, 284 True.
NOAA, National Ocean Service

Current is somewhat rotary, turning counterclockwise.

	Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current
Day	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots
1		0140	-2.7	0632	0857	+1.8	1150	1402	-1.0	1718	2014	+1.5	2216
2		0229	-2.9	0715	0941	+2.0	1232	1453	-1.1	1816	2100	+1.6	2259
3		0311	-3.2	0752	1020	+2.2	1308	1539	-1.4	1905	2143	+1.7	2340
4		0351	-3.5	0826	1055	+2.3	1341	1624	-1.7	1949	2224	+1.8
5	0019	0430	-3.6	0857	1128	+2.4	1410	1706	-1.8	2029	2305	+1.8
6	0059	0510	-3.6	0925	1158	+2.4	1436	1746	-2.0	2107	2346	+1.8
7	0138	0548	-3.5	0951	1229	+2.4	1501	1823	-2.1	2144
8		0026	+1.8	0219	0623	-3.2	1017	1301	+2.4	1526	1854	-2.1	2222
9		0108	+1.7	0300	0654	-2.8	1043	1336	+2.3	1553	1911	-2.2	2302
10		0151	+1.5	0346	0718	-2.4	1111	1413	+2.2	1624	1923	-2.2	2346
11		0240	+1.3	0438	0750	-1.8	1142	1454	+2.0	1700	1957	-2.4
12	0038	0337	+1.2	0544	0854	-1.3	1218	1542	+1.8	1743	2045	-2.4
13	0149	0446	+1.1	0712	1033	-0.8	1302	1636	+1.7	1835	2149	-2.5
14	0325	0606	+1.2	0854	1145	-0.7	1400	1738	+1.6	1935	2312	-2.7
15	0447	0721	+1.5	1014	1251	-0.8	1514	1842	+1.7	2037
16		0039	-3.1	0548	0820	+1.9	1108	1350	-1.1	1636	1945	+1.8	2137
17		0145	-3.5	0639	0909	+2.2	1151	1444	-1.5	1753	2043	+2.0	2234
18		0241	-3.9	0726	0954	+2.6	1229	1533	-2.1	1859	2138	+2.2	2330
19		0331	-4.2	0809	1038	+2.8	1306	1621	-2.5	1958	2231	+2.4
20	0024	0421	-4.2	0851	1120	+2.9	1343	1707	-2.8	2052	2322	+2.4
21	0117	0511	-4.1	0930	1202	+2.9	1421	1751	-2.9	2145
22		0013	+2.4	0210	0559	-3.6	1008	1243	+2.7	1458	1834	-3.1	2237
23		0104	+2.2	0304	0647	-3.2	1043	1324	+2.5	1537	1916	-2.9	2330
24		0155	+2.0	0401	0736	-2.5	1116	1406	+2.2	1618	2001	-2.7
25	0027	0251	+1.7	0504	0831	-1.8	1148	1450	+1.9	1702	2053	-2.4
26	0133	0357	+1.4	0621	0933	-1.3	1222	1540	+1.5	1752	2156	-2.1
27	0250	0516	+1.3	0804	1036	-0.8	1305	1636	+1.3	1850	2303	-2.0
28	0405	0637	+1.3	0936	1140	-0.7	1409	1741	+1.1	1956
29		0009	-2.1	0507	0742	+1.5	1039	1243	-0.7	1551	1851	+1.1	2100
30		0111	-2.2	0557	0831	+1.8	1123	1340	-1.0	1713	1952	+1.3	2154
31		0202	-2.7	0639	0911	+2.0	1158	1429	-1.4	1810	2041	+1.5	2241

All times listed are in Local Time, Daylight Saving Time has been applied when appropriate. All speeds are in knots.

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	September, 2009
Flood Direction, 066 True.	Ebb (-)Direction, 284 True.
NOAA, National Ocean Service

Current is somewhat rotary, turning counterclockwise.

	Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current
Day	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots
1		0246	-2.9	0714	0946	+2.2	1228	1513	-1.8	1856	2124	+1.6	2324
2		0326	-3.2	0747	1018	+2.2	1253	1553	-2.1	1937	2205	+1.8
3	0006	0405	-3.4	0816	1047	+2.3	1316	1631	-2.2	2013	2245	+1.8
4	0046	0444	-3.2	0844	1118	+2.4	1339	1706	-2.5	2048	2325	+1.9
5	0127	0522	-3.1	0910	1149	+2.4	1403	1734	-2.7	2122
6		0006	+1.9	0208	0558	-2.8	0936	1223	+2.4	1429	1748	-2.8	2157
7		0047	+1.9	0250	0630	-2.5	1004	1259	+2.3	1458	1802	-2.9	2234
8		0131	+1.8	0337	0656	-2.1	1034	1338	+2.2	1532	1833	-3.1	2317
9		0219	+1.6	0431	0730	-1.7	1108	1420	+2.0	1611	1913	-3.1
10	0008	0315	+1.5	0537	0841	-1.1	1147	1509	+1.8	1657	2003	-2.9
11	0114	0422	+1.4	0704	1016	-0.8	1238	1607	+1.6	1754	2107	-2.8
12	0243	0538	+1.5	0841	1127	-0.8	1347	1712	+1.5	1902	2239	-2.7
13	0409	0652	+1.8	0950	1233	-1.1	1519	1823	+1.5	2015
14		0024	-2.9	0514	0753	+2.0	1037	1332	-1.5	1652	1932	+1.8	2125
15		0133	-3.4	0609	0842	+2.4	1116	1425	-2.1	1804	2033	+2.0	2228
16		0230	-3.6	0656	0927	+2.6	1152	1512	-2.7	1904	2129	+2.2	2327
17		0320	-3.8	0740	1010	+2.7	1228	1556	-3.1	1958	2222	+2.4
18	0023	0409	-3.6	0822	1051	+2.8	1304	1639	-3.4	2048	2313	+2.4
19	0117	0458	-3.4	0900	1133	+2.7	1340	1721	-3.5	2137
20		0003	+2.4	0210	0545	-3.1	0937	1213	+2.5	1417	1801	-3.4	2225
21		0052	+2.2	0304	0633	-2.5	1011	1253	+2.3	1455	1839	-3.2	2314
22		0142	+2.0	0401	0722	-2.0	1043	1334	+2.0	1534	1917	-2.8
23	0004	0235	+1.8	0504	0815	-1.5	1115	1416	+1.7	1615	2002	-2.5
24	0100	0335	+1.5	0622	0914	-1.0	1152	1503	+1.3	1702	2110	-2.1
25	0205	0447	+1.4	0756	1016	-0.7	1241	1559	+1.0	1759	2225	-1.8
26	0314	0601	+1.4	0912	1118	-0.7	1358	1705	+0.9	1910	2332	-1.8
27	0415	0704	+1.5	1005	1218	-1.0	1550	1820	+0.9	2025
28		0034	-2.0	0506	0753	+1.8	1043	1313	-1.3	1705	1929	+1.0	2130
29		0127	-2.2	0549	0832	+2.0	1113	1401	-1.7	1759	2021	+1.3	2223
30		0214	-2.5	0625	0904	+2.1	1137	1442	-2.1	1842	2105	+1.5	2309

All times listed are in Local Time, Daylight Saving Time has been applied when appropriate. All speeds are in knots.

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	October, 2009
Flood Direction, 066 True.	Ebb (-)Direction, 284 True.
NOAA, National Ocean Service

Current is somewhat rotary, turning counterclockwise.

	Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current
Day	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots
1		0256	-2.8	0658	0934	+2.2	1158	1519	-2.5	1920	2145	+1.8	2353
2		0337	-2.8	0727	1004	+2.2	1220	1553	-2.8	1956	2225	+1.9
3	0035	0416	-2.8	0756	1036	+2.3	1244	1621	-2.9	2029	2306	+2.0
4	0117	0455	-2.5	0824	1111	+2.3	1311	1638	-3.2	2102	2347	+2.0
5	0159	0533	-2.4	0854	1148	+2.3	1340	1653	-3.5	2137
6		0030	+2.1	0244	0609	-2.1	0926	1227	+2.2	1414	1723	-3.8	2216
7		0115	+2.0	0334	0646	-1.7	1001	1308	+2.1	1451	1801	-3.8	2300
8		0203	+2.0	0430	0733	-1.4	1041	1353	+2.0	1534	1845	-3.8	2351
9		0258	+1.8	0536	0847	-1.0	1128	1444	+1.7	1624	1937	-3.5
10	0053	0401	+1.8	0655	1002	-1.0	1230	1544	+1.5	1724	2041	-3.1
11	0207	0510	+1.8	0814	1110	-1.1	1352	1653	+1.4	1837	2226	-2.7
12	0326	0618	+2.0	0913	1212	-1.5	1536	1807	+1.5	1959
13		0005	-2.8	0434	0719	+2.2	0957	1310	-2.1	1700	1920	+1.7	2117
14		0114	-2.9	0531	0810	+2.4	1036	1402	-2.7	1806	2025	+2.0	2226
15		0212	-3.1	0621	0856	+2.5	1113	1448	-3.2	1902	2121	+2.2	2328
16		0303	-3.1	0706	0939	+2.6	1149	1531	-3.6	1953	2213	+2.4
17	0025	0352	-2.8	0748	1021	+2.6	1226	1612	-3.8	2041	2303	+2.4
18	0119	0440	-2.7	0827	1102	+2.4	1302	1652	-3.8	2128	2353	+2.4
19	0213	0529	-2.2	0904	1143	+2.2	1339	1731	-3.6	2213
20		0040	+2.3	0307	0617	-2.0	0938	1224	+2.0	1417	1809	-3.4	2258
21		0128	+2.1	0404	0707	-1.5	1012	1304	+1.8	1455	1845	-3.1	2342
22		0217	+2.0	0507	0759	-1.3	1049	1346	+1.5	1535	1924	-2.7
23	0027	0310	+1.8	0617	0855	-1.0	1133	1432	+1.2	1619	2026	-2.2
24	0115	0409	+1.6	0730	0954	-0.8	1230	1525	+1.0	1712	2145	-2.0
25	0208	0510	+1.5	0832	1052	-1.0	1353	1629	+0.8	1821	2252	-1.8
26	0304	0609	+1.6	0918	1147	-1.1	1534	1742	+0.8	1943	2352	-1.8
27	0357	0658	+1.7	0952	1240	-1.5	1646	1858	+0.9	2100
28		0048	-2.0	0442	0739	+1.8	1018	1326	-2.0	1739	1957	+1.2	2201
29		0138	-2.1	0522	0813	+2.0	1041	1407	-2.4	1823	2044	+1.5	2254
30		0224	-2.2	0557	0846	+2.0	1103	1443	-2.8	1902	2126	+1.7	2340
31		0306	-2.2	0631	0921	+2.2	1128	1513	-3.1	1938	2206	+1.9

All times listed are in Local Time, Daylight Saving Time has been applied when appropriate. All speeds are in knots.

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	November, 2009
Flood Direction, 066 True.	Ebb (-)Direction, 284 True.
NOAA, National Ocean Service

Current is somewhat rotary, turning counterclockwise.

	Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current
Day	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots
1	0025	0248	-2.1	0603	0857	+2.2	1056	1435	-3.5	1913	2148	+2.0
2	0009	0329	-2.0	0637	0935	+2.2	1127	1451	-3.8	1949	2231	+2.2
3	0054	0411	-1.8	0714	1016	+2.2	1202	1519	-4.1	2026	2315	+2.2
4	0142	0455	-1.7	0752	1059	+2.2	1240	1556	-4.3	2107
5		0001	+2.3	0233	0541	-1.4	0835	1144	+2.1	1322	1639	-4.3	2152
6		0049	+2.2	0328	0635	-1.3	0924	1232	+1.9	1408	1727	-4.1	2241
7		0141	+2.2	0428	0738	-1.3	1022	1325	+1.7	1501	1820	-3.6	2335
8		0238	+2.2	0532	0844	-1.3	1133	1426	+1.5	1603	1928	-3.1
9	0035	0339	+2.1	0634	0947	-1.5	1303	1536	+1.3	1720	2118	-2.7
10	0141	0441	+2.2	0728	1047	-2.0	1440	1653	+1.4	1847	2242	-2.4
11	0247	0541	+2.2	0814	1144	-2.5	1557	1809	+1.6	2011	2350	-2.4
12	0347	0636	+2.3	0856	1236	-3.1	1700	1916	+1.9	2125
13		0049	-2.2	0440	0724	+2.4	0935	1324	-3.5	1755	2013	+2.2	2231
14		0143	-2.2	0528	0809	+2.4	1014	1407	-3.8	1845	2105	+2.3	2329
15		0233	-2.1	0612	0852	+2.3	1052	1448	-3.8	1932	2154	+2.4
16	0024	0322	-2.0	0653	0934	+2.2	1130	1529	-3.8	2017	2242	+2.4
17	0118	0412	-1.7	0732	1016	+2.0	1207	1609	-3.6	2100	2328	+2.3
18	0211	0501	-1.5	0810	1057	+1.8	1245	1649	-3.5	2141
19		0012	+2.2	0304	0550	-1.4	0849	1138	+1.6	1324	1728	-3.2	2219
20		0056	+2.1	0358	0640	-1.3	0931	1220	+1.4	1403	1809	-2.9	2254
21		0139	+2.0	0452	0732	-1.1	1020	1305	+1.2	1446	1859	-2.5	2329
22		0225	+1.9	0545	0825	-1.1	1117	1355	+1.0	1535	2005	-2.2
23	0005	0312	+1.8	0634	0919	-1.3	1229	1453	+0.8	1637	2110	-2.0
24	0046	0401	+1.8	0715	1010	-1.4	1357	1601	+0.8	1757	2210	-1.7
25	0131	0449	+1.8	0748	1100	-1.7	1513	1717	+0.8	1923	2307	-1.5
26	0219	0535	+1.8	0815	1146	-2.1	1612	1827	+1.0	2037
27		0000	-1.5	0306	0618	+1.8	0842	1228	-2.5	1700	1921	+1.3	2138
28		0050	-1.5	0350	0700	+2.0	0911	1304	-2.9	1742	2006	+1.6	2231
29		0137	-1.5	0431	0741	+2.0	0941	1334	-3.4	1821	2049	+1.9	2319
30		0221	-1.5	0513	0822	+2.1	1015	1357	-3.8	1900	2132	+2.1

All times listed are in Local Time, Daylight Saving Time has been applied when appropriate. All speeds are in knots.

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	December, 2009
Flood Direction, 066 True.	Ebb (-)Direction, 284 True.
NOAA, National Ocean Service

Current is somewhat rotary, turning counterclockwise.

	Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current		Slack Water	Maximum Current
Day	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots	Time h.m.	Time h.m.	Veloc knots
1	0005	0306	-1.5	0556	0906	+2.2	1053	1422	-4.2	1939	2216	+2.3
2	0051	0353	-1.4	0642	0951	+2.2	1133	1458	-4.5	2019	2300	+2.4
3	0138	0441	-1.4	0730	1037	+2.2	1216	1541	-4.6	2101	2346	+2.5
4	0226	0531	-1.5	0822	1126	+2.1	1303	1628	-4.5	2144
5		0032	+2.6	0314	0623	-1.5	0919	1216	+2.0	1352	1718	-4.2	2228
6		0120	+2.5	0404	0719	-1.7	1022	1310	+1.8	1448	1814	-3.8	2314
7		0212	+2.4	0456	0818	-1.8	1135	1410	+1.5	1551	1925	-3.1
8	0003	0306	+2.3	0548	0918	-2.0	1300	1519	+1.4	1707	2101	-2.5
9	0056	0403	+2.2	0641	1016	-2.4	1429	1637	+1.3	1836	2217	-2.1
10	0155	0502	+2.2	0731	1113	-2.7	1546	1757	+1.5	2008	2324	-1.8
11	0257	0559	+2.1	0817	1209	-3.1	1650	1907	+1.8	2129
12		0026	-1.5	0356	0652	+2.1	0901	1301	-3.4	1746	2004	+2.0	2237
13		0122	-1.5	0450	0741	+2.1	0943	1347	-3.6	1836	2055	+2.2	2335
14		0214	-1.5	0539	0826	+2.0	1024	1430	-3.8	1921	2143	+2.3
15	0028	0304	-1.4	0625	0909	+2.0	1104	1512	-3.8	2003	2228	+2.4
16	0117	0353	-1.4	0708	0952	+1.8	1143	1554	-3.6	2042	2311	+2.4
17	0203	0442	-1.4	0750	1034	+1.8	1221	1635	-3.6	2118	2350	+2.4
18	0247	0529	-1.4	0832	1115	+1.6	1300	1716	-3.5	2150
19		0028	+2.3	0328	0615	-1.4	0916	1157	+1.5	1340	1756	-3.2	2220
20		0104	+2.2	0406	0701	-1.4	1003	1240	+1.3	1422	1838	-2.9	2247
21		0140	+2.1	0443	0748	-1.4	1053	1326	+1.1	1508	1928	-2.4	2316
22		0220	+2.0	0519	0837	-1.4	1150	1419	+0.9	1604	2027	-2.0	2349
23		0302	+1.9	0555	0925	-1.5	1300	1521	+0.8	1715	2127	-1.5
24	0027	0348	+1.8	0631	1013	-1.8	1423	1633	+0.8	1844	2226	-1.3
25	0110	0436	+1.8	0708	1059	-2.1	1535	1750	+1.0	2012	2323	-1.1
26	0158	0527	+1.8	0745	1144	-2.4	1632	1855	+1.3	2125
27		0019	-1.0	0250	0617	+1.8	0823	1224	-2.9	1720	1946	+1.5	2224
28		0110	-1.1	0342	0707	+1.9	0903	1300	-3.4	1804	2031	+1.9	2313
29		0159	-1.1	0435	0755	+2.0	0944	1333	-3.9	1846	2115	+2.2	2358
30		0247	-1.3	0530	0842	+2.1	1028	1410	-4.2	1926	2159	+2.4
31	0040	0336	-1.4	0517	0853	+2.2	1114	1452	-4.5	1859	2205	+2.7

All times listed are in Local Time, Daylight Saving Time has been applied when appropriate. All speeds are in knots.