Tidal Current Predictions

Alcatraz Island, 0.5 mile north of
Predicted Tidal Current	January, 2008
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	0448	+1.6	0726	1104	-2.1	1559	1817	+1.0	2038	2314	-1.0
2	0201	0540	+1.5	0806	1156	-2.4	1653	1917	+1.3	2150
3		0013	-1.0	0257	0629	+1.5	0844	1245	-2.7	1740	2006	+1.6	2249
4		0107	-1.0	0353	0714	+1.6	0920	1329	-2.9	1821	2048	+1.8	2338
5		0158	-1.1	0445	0756	+1.6	0956	1410	-3.2	1858	2127	+2.0
6	0022	0246	-1.1	0534	0837	+1.7	1032	1450	-3.5	1934	2204	+2.2
7	0102	0334	-1.3	0621	0919	+1.8	1109	1528	-3.6	2007	2239	+2.3
8	0137	0420	-1.3	0706	1001	+1.8	1147	1602	-3.8	2038	2313	+2.4
9	0207	0503	-1.4	0750	1044	+1.8	1226	1629	-3.8	2107	2347	+2.4
10	0234	0542	-1.5	0835	1128	+1.8	1307	1653	-3.6	2136
11		0022	+2.5	0301	0616	-1.7	0921	1213	+1.7	1351	1725	-3.5	2206
12		0100	+2.4	0331	0646	-1.8	1010	1300	+1.5	1440	1806	-3.2	2238
13		0141	+2.4	0405	0716	-2.1	1104	1354	+1.4	1538	1856	-2.7	2315
14		0227	+2.3	0445	0759	-2.2	1209	1457	+1.3	1648	2008	-2.1	2357
15		0318	+2.2	0531	0857	-2.5	1331	1609	+1.3	1815	2142	-1.5
16	0046	0413	+2.0	0623	1002	-2.8	1503	1730	+1.4	1950	2258	-1.3
17	0144	0513	+2.0	0718	1109	-3.1	1619	1845	+1.7	2117
18		0007	-1.3	0252	0614	+2.0	0813	1214	-3.5	1721	1947	+2.0	2228
19		0110	-1.3	0404	0713	+2.1	0907	1314	-3.9	1815	2041	+2.4	2326
20		0207	-1.5	0515	0808	+2.2	1000	1409	-4.2	1905	2130	+2.6
21	0016	0302	-1.7	0620	0900	+2.2	1051	1500	-4.2	1950	2216	+2.7
22	0101	0355	-1.8	0719	0952	+2.2	1142	1550	-4.2	2033	2300	+2.7
23	0143	0445	-2.0	0814	1042	+2.1	1231	1638	-3.9	2112	2342	+2.7
24	0222	0531	-2.1	0907	1131	+2.0	1320	1723	-3.6	2147
25		0021	+2.5	0259	0615	-2.1	0958	1218	+1.8	1409	1806	-3.1	2217
26		0059	+2.4	0335	0659	-2.1	1049	1307	+1.5	1500	1852	-2.5	2243
27		0137	+2.1	0412	0744	-2.0	1143	1400	+1.3	1558	1943	-2.0	2308
28		0218	+1.8	0451	0832	-1.8	1248	1503	+1.0	1709	2042	-1.4	2336
29		0302	+1.6	0535	0925	-1.8	1405	1622	+0.9	1845	2143	-1.0
30	0014	0352	+1.4	0623	1021	-1.8	1520	1749	+1.0	2029	2245	-0.7
31	0103	0448	+1.3	0714	1119	-2.1	1621	1855	+1.3	2144	2347	-0.7

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, 2008
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	0207	0546	+1.3	0803	1216	-2.4	1711	1944	+1.5	2240
2		0045	-0.8	0319	0641	+1.3	0848	1307	-2.8	1753	2025	+1.8	2323
3		0137	-1.0	0426	0730	+1.5	0929	1351	-3.1	1830	2101	+2.0	2358
4		0224	-1.3	0522	0814	+1.6	1010	1431	-3.5	1904	2133	+2.2
5	0027	0308	-1.4	0611	0858	+1.8	1050	1508	-3.6	1935	2205	+2.4
6	0050	0349	-1.7	0655	0941	+1.8	1131	1542	-3.8	2004	2238	+2.5
7	0113	0426	-1.8	0737	1025	+1.9	1212	1613	-3.8	2032	2312	+2.6
8	0137	0457	-2.1	0819	1109	+2.0	1256	1641	-3.6	2101	2348	+2.7
9	0205	0520	-2.4	0903	1155	+2.0	1343	1713	-3.5	2131
10		0026	+2.6	0237	0541	-2.7	0949	1242	+1.8	1433	1753	-3.1	2205
11		0107	+2.5	0314	0614	-2.9	1040	1335	+1.7	1531	1842	-2.5	2242
12		0152	+2.3	0356	0659	-2.9	1142	1437	+1.5	1642	1955	-1.8	2324
13		0243	+2.1	0445	0756	-2.9	1303	1550	+1.4	1811	2128	-1.3
14	0014	0342	+1.9	0542	0915	-2.8	1441	1714	+1.5	1954	2245	-1.0
15	0119	0446	+1.8	0647	1047	-2.9	1601	1832	+1.8	2121	2355	-1.1
16	0243	0554	+1.8	0752	1205	-3.2	1705	1933	+2.1	2223
17		0059	-1.4	0412	0659	+1.9	0855	1310	-3.6	1758	2024	+2.4	2311
18		0156	-1.7	0525	0758	+2.0	0952	1404	-3.8	1845	2110	+2.6	2351
19		0247	-2.0	0625	0851	+2.1	1046	1453	-3.9	1927	2152	+2.7
20	0028	0334	-2.2	0719	0941	+2.2	1137	1539	-3.8	2006	2232	+2.7
21	0102	0418	-2.5	0808	1030	+2.1	1226	1622	-3.5	2040	2310	+2.6
22	0135	0459	-2.5	0854	1116	+2.0	1314	1704	-3.2	2111	2346	+2.4
23	0207	0537	-2.5	0937	1201	+1.8	1401	1746	-2.8	2137
24		0020	+2.2	0239	0614	-2.4	1020	1246	+1.6	1451	1829	-2.2	2201
25		0055	+2.0	0312	0652	-2.2	1103	1334	+1.4	1547	1918	-1.7	2226
26		0133	+1.8	0348	0734	-2.0	1155	1431	+1.2	1656	2016	-1.1	2256
27		0214	+1.5	0428	0830	-1.8	1305	1543	+1.0	1835	2119	-0.8	2335
28		0304	+1.3	0518	0936	-1.7	1427	1711	+1.0	2020	2222	-0.6
29	0027	0402	+1.0	0617	1042	-1.8	1536	1823	+1.3	2129	2324	-0.6

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, 2008
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	0139	0507	+1.0	0719	1145	-2.1	1630	1913	+1.5	2216
2		0023	-0.8	0309	0611	+1.1	0815	1239	-2.5	1713	1951	+1.8	2250
3		0114	-1.1	0422	0706	+1.3	0905	1325	-2.9	1750	2024	+2.0	2314
4		0158	-1.5	0517	0754	+1.5	0950	1405	-3.2	1823	2054	+2.2	2334
5		0237	-1.8	0602	0838	+1.8	1034	1442	-3.4	1854	2126	+2.4	2354
6		0312	-2.2	0644	0923	+2.0	1118	1517	-3.5	1923	2200	+2.5
7	0017	0341	-2.5	0723	1007	+2.1	1203	1551	-3.5	1953	2236	+2.7
8	0045	0404	-2.9	0804	1052	+2.2	1249	1625	-3.4	2024	2314	+2.7
9	0116	0527	-3.4	0946	1239	+2.2	1438	1803	-3.1	2158
10		0054	+2.6	0252	0558	-3.6	1032	1327	+2.1	1531	1846	-2.7	2234
11		0136	+2.4	0331	0637	-3.6	1124	1421	+2.0	1632	1940	-2.1	2314
12		0223	+2.2	0416	0723	-3.5	1225	1522	+1.8	1745	2100	-1.4
13	0000	0315	+2.0	0507	0820	-3.2	1345	1636	+1.6	1918	2222	-1.1
14	0056	0416	+1.7	0609	0943	-2.8	1518	1758	+1.7	2059	2335	-1.0
15	0215	0526	+1.5	0722	1134	-2.8	1636	1913	+1.9	2210
16		0044	-1.3	0401	0640	+1.5	0838	1253	-2.9	1738	2012	+2.2	2300
17		0146	-1.7	0525	0750	+1.7	0947	1358	-3.1	1830	2100	+2.4	2339
18		0240	-2.1	0630	0850	+1.9	1049	1450	-3.2	1915	2143	+2.5
19	0014	0325	-2.5	0724	0942	+2.0	1144	1535	-3.2	1955	2222	+2.5
20	0045	0406	-2.8	0812	1031	+2.1	1234	1618	-3.2	2031	2259	+2.5
21	0116	0445	-2.9	0856	1117	+2.1	1322	1700	-2.9	2102	2334	+2.4
22	0146	0522	-2.9	0936	1201	+2.1	1409	1742	-2.7	2130
23		0008	+2.2	0216	0557	-2.9	1015	1244	+2.0	1456	1825	-2.2	2155
24		0042	+2.0	0246	0629	-2.8	1052	1327	+1.8	1547	1909	-2.0	2221
25		0117	+1.8	0318	0656	-2.7	1131	1412	+1.6	1643	1959	-1.4	2250
26		0154	+1.6	0352	0718	-2.4	1214	1504	+1.4	1754	2056	-1.0	2325
27		0235	+1.3	0431	0752	-2.1	1309	1607	+1.3	1931	2158	-0.7
28	0008	0324	+1.1	0517	0942	-1.8	1421	1722	+1.3	2100	2300	-0.6
29	0106	0423	+0.9	0617	1102	-1.8	1533	1832	+1.3	2157
30		0000	-0.7	0229	0531	+0.9	0730	1207	-2.0	1631	1925	+1.6	2234
31		0056	-1.0	0407	0640	+1.0	0840	1303	-2.2	1718	2004	+1.8	2258

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, 2008
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		0145	-1.4	0516	0742	+1.3	0940	1351	-2.5	1757	2038	+2.0	2316
2		0225	-2.0	0607	0833	+1.5	1031	1433	-2.8	1831	2111	+2.2	2335
3		0300	-2.4	0650	0920	+1.8	1120	1512	-2.9	1904	2145	+2.4	2359
4		0330	-2.9	0730	1005	+2.0	1208	1550	-3.1	1938	2222	+2.5
5	0027	0355	-3.4	0810	1051	+2.2	1256	1629	-2.9	2012	2302	+2.6
6	0059	0419	-3.8	0852	1138	+2.4	1345	1711	-2.8	2048	2343	+2.6
7	0135	0450	-4.1	0936	1226	+2.4	1437	1756	-2.5	2127
8		0026	+2.5	0214	0528	-4.2	1024	1316	+2.3	1534	1848	-2.1	2208
9		0111	+2.3	0257	0611	-4.2	1117	1410	+2.2	1638	1949	-1.7	2253
10		0159	+2.0	0344	0659	-3.8	1218	1511	+2.0	1753	2101	-1.3	2346
11		0253	+1.8	0438	0757	-3.4	1330	1620	+1.9	1922	2213	-1.1
12	0055	0356	+1.5	0542	0934	-2.8	1448	1734	+1.9	2044	2322	-1.1
13	0234	0509	+1.3	0701	1117	-2.5	1600	1843	+2.0	2141
14		0027	-1.5	0414	0628	+1.3	0825	1231	-2.5	1701	1941	+2.2	2224
15		0127	-2.0	0527	0741	+1.5	0942	1333	-2.5	1752	2028	+2.3	2259
16		0216	-2.5	0626	0841	+1.8	1046	1424	-2.5	1836	2109	+2.3	2331
17		0258	-2.8	0715	0932	+2.0	1142	1509	-2.5	1914	2147	+2.3
18	0001	0335	-3.1	0800	1019	+2.1	1232	1552	-2.5	1948	2222	+2.2
19	0030	0411	-3.2	0841	1103	+2.1	1320	1635	-2.2	2019	2257	+2.2
20	0100	0446	-3.2	0919	1146	+2.1	1407	1719	-2.1	2047	2332	+2.0
21	0130	0520	-3.2	0956	1228	+2.0	1455	1805	-1.8	2115
22		0007	+1.9	0201	0550	-3.1	1032	1310	+2.0	1547	1852	-1.5	2146
23		0044	+1.7	0233	0613	-2.9	1109	1353	+1.8	1645	1943	-1.1	2221
24		0122	+1.5	0308	0636	-2.8	1148	1439	+1.7	1753	2038	-0.8	2301
25		0204	+1.3	0346	0710	-2.5	1231	1531	+1.5	1910	2136	-0.7	2351
26		0253	+1.0	0430	0758	-2.2	1322	1628	+1.5	2018	2234	-0.7
27	0054	0350	+0.9	0527	1013	-2.0	1418	1726	+1.5	2103	2330	-1.0
28	0219	0457	+0.8	0641	1121	-2.0	1514	1819	+1.7	2132
29		0021	-1.3	0352	0607	+0.9	0802	1219	-2.0	1605	1905	+1.9	2152
30		0107	-1.8	0458	0714	+1.2	0913	1311	-2.2	1650	1947	+2.1	2214

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, 2008
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		0146	-2.4	0550	0811	+1.5	1013	1358	-2.4	1731	2027	+2.2	2240
2		0220	-2.9	0635	0901	+1.8	1108	1442	-2.4	1811	2107	+2.4	2311
3		0249	-3.5	0718	0949	+2.1	1200	1525	-2.5	1852	2148	+2.5	2345
4		0317	-3.9	0801	1037	+2.3	1252	1610	-2.4	1933	2231	+2.5
5	0022	0348	-4.3	0846	1127	+2.4	1346	1659	-2.2	2016	2316	+2.5
6	0103	0426	-4.6	0934	1216	+2.5	1441	1752	-2.0	2101
7		0002	+2.4	0146	0509	-4.6	1024	1307	+2.5	1541	1849	-1.7	2149
8		0050	+2.2	0232	0556	-4.3	1116	1400	+2.4	1644	1949	-1.5	2243
9		0140	+2.0	0321	0647	-3.9	1211	1457	+2.2	1753	2054	-1.3	2346
10		0236	+1.6	0417	0748	-3.2	1309	1558	+2.1	1905	2159	-1.3
11	0106	0339	+1.3	0522	0929	-2.7	1410	1702	+2.0	2008	2301	-1.5
12	0243	0452	+1.2	0641	1052	-2.2	1513	1805	+2.0	2059
13		0001	-1.8	0410	0614	+1.2	0811	1159	-2.0	1611	1901	+2.0	2140
14		0057	-2.2	0519	0729	+1.3	0934	1259	-2.0	1702	1950	+2.1	2215
15		0146	-2.7	0615	0830	+1.6	1043	1353	-1.8	1746	2032	+2.1	2247
16		0227	-2.9	0703	0920	+1.8	1140	1440	-1.8	1825	2110	+2.0	2318
17		0305	-3.2	0745	1006	+2.0	1231	1526	-1.8	1900	2146	+2.0	2349
18		0341	-3.4	0825	1049	+2.0	1320	1611	-1.7	1932	2221	+2.0
19	0020	0417	-3.4	0903	1132	+2.1	1408	1658	-1.5	2005	2258	+1.8
20	0052	0452	-3.4	0939	1213	+2.1	1457	1746	-1.4	2039	2336	+1.8
21	0125	0526	-3.4	1015	1252	+2.1	1548	1835	-1.3	2117
22		0015	+1.6	0159	0554	-3.4	1050	1332	+2.0	1640	1924	-1.1	2158
23		0056	+1.5	0235	0617	-3.1	1124	1412	+2.0	1732	2015	-1.0	2244
24		0139	+1.3	0314	0649	-2.9	1159	1455	+1.9	1821	2107	-1.0	2336
25		0226	+1.1	0358	0731	-2.7	1236	1541	+1.9	1905	2200	-1.0
26	0037	0321	+1.0	0452	0831	-2.2	1317	1629	+1.8	1941	2250	-1.3
27	0151	0424	+0.9	0601	1025	-2.0	1402	1718	+1.9	2012	2337	-1.5
28	0317	0534	+0.9	0725	1131	-1.8	1451	1808	+2.0	2044
29		0021	-2.1	0430	0645	+1.1	0846	1229	-1.8	1542	1858	+2.1	2117
30		0102	-2.7	0528	0749	+1.5	0957	1324	-1.8	1632	1946	+2.2	2153
31		0139	-3.2	0619	0845	+1.8	1100	1415	-1.8	1722	2032	+2.3	2231

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, 2008
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		0215	-3.8	0708	0937	+2.2	1158	1505	-2.0	1811	2119	+2.4	2312
2		0251	-4.3	0756	1027	+2.4	1254	1557	-1.8	1902	2206	+2.4	2355
3		0331	-4.6	0844	1117	+2.6	1350	1651	-1.8	1953	2254	+2.4
4	0040	0415	-4.8	0932	1207	+2.7	1445	1747	-1.7	2046	2344	+2.2
5	0126	0504	-4.6	1021	1257	+2.7	1542	1843	-1.7	2143
6		0034	+2.1	0215	0556	-4.3	1108	1346	+2.6	1637	1939	-1.5	2243
7		0125	+1.9	0306	0651	-3.8	1154	1436	+2.4	1732	2036	-1.5	2350
8		0220	+1.6	0402	0755	-3.2	1240	1529	+2.3	1826	2134	-1.7
9	0106	0321	+1.3	0505	0911	-2.5	1325	1623	+2.1	1919	2231	-1.8
10	0230	0432	+1.1	0622	1020	-2.0	1413	1718	+2.0	2008	2326	-2.0
11	0352	0553	+1.0	0753	1123	-1.5	1503	1813	+1.8	2051
12		0020	-2.2	0501	0712	+1.2	0924	1223	-1.4	1554	1905	+1.8	2130
13		0111	-2.5	0558	0815	+1.5	1039	1320	-1.3	1643	1952	+1.8	2205
14		0156	-2.8	0646	0906	+1.7	1139	1412	-1.3	1728	2033	+1.8	2239
15		0238	-3.1	0729	0952	+1.9	1231	1502	-1.3	1810	2112	+1.8	2313
16		0317	-3.4	0808	1034	+2.0	1320	1550	-1.3	1851	2151	+1.8	2347
17		0356	-3.5	0845	1115	+2.1	1406	1638	-1.3	1933	2230	+1.8
18	0022	0435	-3.5	0921	1153	+2.2	1451	1727	-1.3	2014	2310	+1.7
19	0057	0513	-3.6	0954	1230	+2.2	1533	1814	-1.3	2057	2352	+1.6
20	0134	0547	-3.5	1026	1305	+2.2	1611	1900	-1.3	2141
21		0033	+1.5	0212	0613	-3.5	1056	1340	+2.2	1644	1944	-1.3	2227
22		0117	+1.5	0252	0636	-3.2	1125	1418	+2.2	1714	2027	-1.3	2316
23		0203	+1.3	0337	0711	-2.9	1156	1458	+2.2	1746	2111	-1.4
24	0011	0254	+1.2	0429	0758	-2.5	1230	1541	+2.1	1820	2155	-1.7
25	0113	0354	+1.0	0534	0906	-2.1	1310	1629	+2.0	1859	2239	-2.0
26	0230	0502	+1.0	0656	1041	-1.7	1355	1721	+2.0	1942	2325	-2.4
27	0354	0617	+1.2	0825	1151	-1.4	1447	1815	+2.0	2027
28		0013	-2.8	0505	0730	+1.5	0947	1256	-1.4	1544	1910	+2.1	2113
29		0103	-3.4	0605	0832	+1.8	1058	1355	-1.4	1644	2004	+2.2	2200
30		0153	-3.9	0659	0926	+2.2	1200	1451	-1.5	1745	2056	+2.2	2248

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, 2008
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		0241	-4.3	0750	1017	+2.4	1256	1546	-1.5	1846	2148	+2.3	2336
2		0331	-4.5	0838	1106	+2.7	1348	1641	-1.7	1946	2239	+2.3
3	0026	0422	-4.6	0924	1154	+2.8	1438	1736	-1.8	2046	2330	+2.2
4	0115	0514	-4.5	1008	1240	+2.8	1524	1828	-1.8	2144
5		0021	+2.1	0206	0606	-4.2	1050	1325	+2.7	1609	1918	-2.0	2243
6		0112	+1.9	0257	0656	-3.6	1129	1408	+2.5	1653	2008	-2.0	2344
7		0204	+1.6	0351	0748	-3.1	1205	1453	+2.3	1736	2059	-2.0
8	0048	0301	+1.3	0451	0846	-2.4	1238	1539	+2.0	1820	2151	-2.0
9	0201	0407	+1.1	0603	0948	-1.7	1310	1628	+1.8	1907	2244	-2.0
10	0320	0526	+1.0	0734	1049	-1.3	1346	1720	+1.6	1955	2338	-2.1
11	0434	0650	+1.0	0914	1150	-1.0	1433	1815	+1.5	2042
12		0033	-2.2	0535	0758	+1.3	1035	1251	-0.8	1531	1909	+1.5	2125
13		0126	-2.5	0625	0850	+1.5	1136	1348	-0.8	1635	1959	+1.5	2205
14		0214	-2.8	0708	0935	+1.8	1226	1440	-1.0	1734	2043	+1.5	2244
15		0258	-3.2	0747	1015	+2.0	1310	1530	-1.1	1827	2125	+1.6	2322
16		0339	-3.4	0822	1052	+2.2	1349	1617	-1.3	1915	2206	+1.7
17	0000	0419	-3.6	0855	1127	+2.2	1423	1703	-1.4	2000	2248	+1.7
18	0037	0457	-3.6	0926	1200	+2.4	1453	1747	-1.5	2043	2330	+1.8
19	0116	0532	-3.6	0955	1232	+2.4	1519	1826	-1.7	2126
20		0013	+1.7	0156	0601	-3.6	1022	1305	+2.4	1543	1901	-1.7	2208
21		0056	+1.7	0238	0623	-3.4	1049	1340	+2.4	1610	1930	-1.8	2252
22		0141	+1.5	0324	0653	-3.1	1119	1418	+2.4	1641	1950	-2.1	2341
23		0230	+1.5	0416	0734	-2.7	1151	1500	+2.2	1717	2020	-2.2
24	0036	0327	+1.3	0518	0831	-2.0	1229	1548	+2.1	1759	2109	-2.4
25	0146	0435	+1.2	0638	1002	-1.5	1313	1641	+2.0	1849	2213	-2.7
26	0318	0553	+1.3	0814	1126	-1.1	1407	1739	+1.9	1944	2325	-2.9
27	0443	0712	+1.5	0945	1237	-1.1	1512	1841	+1.9	2041
28		0038	-3.4	0550	0819	+1.9	1059	1341	-1.3	1625	1943	+2.0	2138
29		0143	-3.8	0647	0914	+2.2	1158	1440	-1.4	1740	2040	+2.1	2233
30		0241	-4.1	0737	1003	+2.5	1247	1535	-1.7	1850	2135	+2.2	2326
31		0334	-4.3	0823	1049	+2.7	1330	1627	-2.0	1952	2227	+2.2

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, 2008
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	0018	0425	-4.3	0906	1134	+2.8	1411	1717	-2.1	2049	2319	+2.2
2	0110	0514	-4.2	0947	1216	+2.8	1449	1805	-2.4	2143
3		0009	+2.1	0200	0601	-3.8	1024	1256	+2.7	1527	1849	-2.4	2235
4		0058	+2.0	0251	0646	-3.4	1057	1335	+2.4	1603	1932	-2.4	2326
5		0147	+1.8	0343	0731	-2.8	1126	1414	+2.2	1641	2015	-2.2
6	0020	0240	+1.5	0440	0821	-2.1	1152	1455	+2.0	1720	2103	-2.1
7	0121	0340	+1.2	0547	0918	-1.5	1219	1539	+1.7	1804	2156	-1.8
8	0236	0455	+1.0	0718	1020	-1.0	1253	1628	+1.4	1854	2254	-1.8
9	0354	0622	+1.0	0907	1123	-0.7	1339	1725	+1.3	1949	2356	-2.0
10	0501	0735	+1.3	1028	1226	-0.6	1444	1827	+1.2	2044
11		0057	-2.2	0554	0828	+1.5	1124	1326	-0.7	1607	1927	+1.3	2134
12		0151	-2.5	0638	0911	+1.8	1208	1420	-1.0	1722	2018	+1.4	2219
13		0237	-2.9	0716	0948	+2.0	1243	1508	-1.3	1820	2103	+1.5	2301
14		0319	-3.4	0750	1021	+2.2	1312	1552	-1.5	1908	2146	+1.7	2342
15		0357	-3.5	0821	1051	+2.3	1336	1633	-1.8	1950	2228	+1.8
16	0022	0435	-3.6	0850	1122	+2.4	1357	1710	-2.0	2030	2311	+1.9
17	0102	0509	-3.6	0917	1154	+2.5	1419	1743	-2.2	2108	2353	+1.9
18	0144	0540	-3.5	0944	1228	+2.5	1445	1806	-2.4	2147
19		0037	+1.9	0228	0606	-3.2	1012	1304	+2.5	1514	1820	-2.7	2228
20		0122	+1.9	0315	0637	-2.9	1043	1343	+2.4	1547	1847	-2.9	2314
21		0211	+1.8	0409	0718	-2.4	1117	1425	+2.3	1626	1926	-3.1
22	0008	0307	+1.5	0512	0815	-1.8	1156	1513	+2.1	1711	2016	-3.1
23	0116	0414	+1.5	0633	0950	-1.3	1242	1609	+1.9	1805	2121	-2.9
24	0249	0533	+1.5	0813	1112	-1.0	1342	1711	+1.8	1908	2251	-2.9
25	0420	0655	+1.7	0946	1224	-1.0	1500	1820	+1.7	2017
26		0025	-3.1	0529	0802	+2.0	1051	1330	-1.3	1633	1928	+1.8	2123
27		0137	-3.5	0626	0855	+2.3	1140	1428	-1.7	1754	2030	+2.0	2225
28		0235	-3.8	0715	0942	+2.6	1220	1520	-2.1	1859	2126	+2.1	2322
29		0327	-3.9	0759	1025	+2.7	1257	1607	-2.4	1955	2218	+2.2
30	0016	0414	-3.8	0840	1107	+2.7	1332	1652	-2.7	2046	2309	+2.2
31	0107	0500	-3.6	0917	1146	+2.7	1406	1734	-2.8	2134	2357	+2.2

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, 2008
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	0157	0544	-3.2	0951	1223	+2.5	1439	1814	-2.8	2219
2		0044	+2.0	0246	0627	-2.8	1020	1300	+2.3	1512	1851	-2.7	2304
3		0130	+1.8	0338	0711	-2.4	1046	1336	+2.0	1547	1927	-2.5	2349
4		0218	+1.5	0433	0759	-1.8	1111	1414	+1.8	1623	2005	-2.2
5	0039	0313	+1.3	0540	0855	-1.3	1140	1455	+1.5	1703	2057	-2.0
6	0142	0422	+1.1	0713	0957	-0.8	1217	1543	+1.2	1752	2208	-1.7
7	0301	0546	+1.1	0858	1101	-0.6	1308	1641	+1.0	1851	2318	-1.8
8	0412	0701	+1.3	1009	1204	-0.6	1423	1747	+1.0	1959
9		0023	-2.0	0509	0756	+1.5	1057	1304	-0.8	1605	1856	+1.0	2102
10		0121	-2.4	0554	0836	+1.8	1132	1357	-1.1	1721	1955	+1.2	2155
11		0209	-2.7	0633	0910	+2.0	1159	1442	-1.5	1814	2043	+1.5	2242
12		0251	-2.9	0706	0940	+2.2	1219	1521	-2.0	1858	2126	+1.7	2326
13		0330	-3.2	0737	1009	+2.3	1238	1557	-2.2	1937	2209	+1.8
14	0008	0406	-3.2	0805	1041	+2.4	1259	1627	-2.7	2013	2252	+2.0
15	0051	0442	-3.2	0834	1116	+2.5	1324	1650	-2.9	2050	2335	+2.1
16	0135	0516	-3.1	0903	1152	+2.6	1353	1707	-3.4	2128
17		0019	+2.2	0221	0549	-2.8	0935	1231	+2.5	1426	1734	-3.6	2210
18		0106	+2.1	0312	0626	-2.5	1010	1312	+2.4	1503	1810	-3.8	2257
19		0156	+2.0	0408	0713	-2.1	1048	1356	+2.2	1545	1853	-3.8	2351
20		0252	+1.8	0514	0821	-1.5	1131	1446	+2.0	1634	1944	-3.5
21	0059	0359	+1.7	0637	0947	-1.1	1224	1543	+1.7	1731	2049	-3.1
22	0225	0515	+1.7	0815	1102	-1.0	1335	1650	+1.5	1840	2237	-2.8
23	0351	0632	+1.8	0933	1211	-1.1	1516	1804	+1.5	1958
24		0012	-2.8	0459	0737	+2.1	1026	1315	-1.5	1651	1917	+1.6	2114
25		0123	-3.1	0556	0829	+2.3	1107	1411	-2.1	1802	2022	+1.8	2221
26		0220	-3.2	0644	0914	+2.5	1143	1459	-2.7	1900	2118	+2.0	2320
27		0310	-3.2	0727	0955	+2.6	1217	1542	-2.9	1950	2209	+2.2
28	0015	0355	-3.1	0806	1034	+2.5	1249	1622	-3.1	2037	2258	+2.2
29	0106	0439	-2.9	0841	1112	+2.4	1321	1700	-3.2	2121	2344	+2.2
30	0155	0523	-2.7	0913	1148	+2.2	1352	1736	-3.1	2202

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, 2008
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		0029	+2.1	0244	0607	-2.2	0940	1224	+2.1	1425	1810	-2.9	2242
2		0114	+2.0	0336	0653	-1.8	1007	1300	+1.8	1458	1840	-2.8	2322
3		0159	+1.8	0433	0742	-1.4	1036	1338	+1.6	1533	1905	-2.5
4	0005	0250	+1.5	0541	0837	-1.0	1111	1418	+1.3	1611	1937	-2.2
5	0055	0350	+1.4	0710	0938	-0.7	1154	1506	+1.1	1656	2113	-2.0
6	0158	0500	+1.3	0835	1040	-0.6	1252	1603	+0.9	1754	2239	-1.8
7	0306	0609	+1.4	0934	1140	-0.7	1418	1710	+0.8	1908	2345	-1.8
8	0406	0705	+1.5	1014	1236	-1.0	1602	1823	+0.9	2025
9		0043	-2.1	0455	0747	+1.8	1042	1326	-1.5	1711	1928	+1.1	2128
10		0133	-2.4	0535	0821	+2.0	1101	1409	-2.0	1801	2021	+1.4	2222
11		0218	-2.5	0611	0853	+2.2	1119	1445	-2.4	1842	2106	+1.7	2310
12		0258	-2.7	0643	0926	+2.3	1141	1516	-2.8	1920	2150	+1.9	2356
13		0336	-2.8	0715	1001	+2.4	1207	1541	-3.2	1957	2234	+2.1
14	0042	0414	-2.7	0748	1039	+2.5	1237	1600	-3.6	2036	2319	+2.2
15	0129	0454	-2.5	0823	1119	+2.5	1311	1627	-4.1	2116
16		0005	+2.3	0219	0537	-2.4	0901	1201	+2.4	1348	1703	-4.3	2201
17		0054	+2.4	0313	0624	-2.0	0941	1246	+2.3	1429	1744	-4.3	2250
18		0144	+2.2	0412	0720	-1.7	1025	1333	+2.1	1515	1831	-4.2	2345
19		0240	+2.2	0520	0828	-1.3	1117	1424	+1.8	1606	1924	-3.6
20	0048	0343	+2.0	0638	0940	-1.1	1220	1524	+1.5	1706	2032	-3.1
21	0159	0453	+2.0	0759	1049	-1.3	1347	1633	+1.3	1819	2228	-2.7
22	0313	0602	+2.0	0902	1154	-1.5	1533	1750	+1.3	1943	2351	-2.5
23	0419	0704	+2.2	0949	1255	-2.0	1655	1908	+1.5	2106
24		0059	-2.5	0516	0756	+2.2	1028	1348	-2.5	1759	2014	+1.8	2218
25		0156	-2.5	0605	0842	+2.4	1102	1434	-2.9	1853	2110	+2.0	2320
26		0246	-2.5	0648	0922	+2.4	1135	1514	-3.2	1941	2159	+2.1
27	0015	0331	-2.4	0726	1000	+2.3	1207	1552	-3.4	2025	2246	+2.2
28	0106	0416	-2.2	0800	1037	+2.2	1239	1628	-3.4	2107	2332	+2.2
29	0156	0502	-2.0	0831	1114	+2.0	1311	1703	-3.4	2146
30		0015	+2.1	0246	0548	-1.7	0901	1151	+1.9	1344	1737	-3.2	2224
31		0058	+2.0	0339	0636	-1.4	0932	1229	+1.7	1417	1807	-3.1	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	November, 2008
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		0142	+1.9	0436	0726	-1.3	1008	1307	+1.5	1452	1833	-2.8	2339
2		0227	+1.8	0439	0719	-1.0	0949	1249	+1.3	1430	1805	-2.7	2319
3		0216	+1.7	0548	0816	-0.8	1039	1335	+1.0	1513	1853	-2.2
4	0003	0309	+1.6	0652	0914	-0.8	1142	1431	+0.8	1607	2054	-2.0
5	0053	0404	+1.6	0741	1009	-1.0	1305	1535	+0.8	1718	2200	-1.8
6	0146	0455	+1.7	0813	1101	-1.3	1439	1646	+0.8	1841	2259	-1.8
7	0237	0542	+1.8	0836	1148	-1.7	1547	1756	+1.0	1957	2352	-2.0
8	0322	0624	+2.0	0857	1229	-2.2	1639	1856	+1.3	2100
9		0040	-2.1	0404	0704	+2.1	0921	1305	-2.8	1723	1946	+1.6	2155
10		0125	-2.1	0444	0744	+2.2	0950	1334	-3.4	1804	2032	+2.0	2246
11		0208	-2.1	0524	0825	+2.4	1022	1359	-3.8	1845	2119	+2.2	2337
12		0251	-2.1	0605	0907	+2.4	1058	1426	-4.2	1927	2206	+2.4
13	0028	0338	-2.0	0648	0951	+2.4	1138	1501	-4.6	2012	2254	+2.5
14	0121	0429	-1.8	0733	1037	+2.4	1220	1543	-4.6	2059	2343	+2.5
15	0216	0523	-1.7	0821	1125	+2.2	1305	1629	-4.6	2148
16		0034	+2.5	0315	0620	-1.5	0914	1214	+2.0	1354	1719	-4.2	2239
17		0127	+2.4	0417	0721	-1.4	1014	1308	+1.8	1447	1815	-3.8	2332
18		0223	+2.3	0521	0825	-1.4	1127	1408	+1.5	1548	1931	-3.1
19	0028	0323	+2.2	0623	0928	-1.5	1257	1516	+1.3	1701	2110	-2.5
20	0128	0424	+2.1	0718	1028	-1.8	1430	1634	+1.2	1829	2223	-2.1
21	0229	0524	+2.1	0804	1126	-2.2	1547	1755	+1.3	1959	2328	-2.0
22	0325	0618	+2.1	0845	1219	-2.7	1650	1904	+1.5	2116
23		0026	-1.8	0416	0705	+2.1	0921	1305	-2.9	1742	1959	+1.8	2221
24		0119	-1.7	0500	0748	+2.0	0955	1346	-3.2	1829	2048	+2.0	2317
25		0206	-1.7	0540	0827	+2.0	1029	1424	-3.4	1912	2134	+2.1
26	0009	0253	-1.5	0616	0905	+2.0	1103	1502	-3.5	1952	2218	+2.2
27	0058	0341	-1.4	0651	0943	+1.8	1136	1540	-3.5	2030	2301	+2.2
28	0148	0430	-1.4	0727	1022	+1.8	1211	1617	-3.5	2106	2341	+2.2
29	0238	0518	-1.3	0806	1102	+1.6	1246	1654	-3.4	2141
30		0020	+2.1	0327	0607	-1.1	0848	1142	+1.5	1322	1727	-3.2	2214

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, 2008
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	+2.1	0416	0657	-1.1	0934	1224	+1.3	1401	1756	-2.9	2247
2		0139	+2.0	0501	0747	-1.0	1025	1310	+1.1	1444	1832	-2.7	2320
3		0221	+2.0	0543	0839	-1.1	1123	1401	+1.0	1534	1941	-2.2	2356
4		0306	+1.9	0619	0928	-1.3	1232	1501	+0.8	1638	2108	-2.0
5	0037	0353	+1.8	0651	1016	-1.5	1355	1609	+0.8	1759	2211	-1.7
6	0121	0442	+1.9	0722	1101	-2.0	1510	1721	+1.0	1925	2308	-1.5
7	0210	0531	+2.0	0755	1142	-2.4	1610	1829	+1.3	2039
8		0003	-1.5	0300	0619	+2.0	0830	1220	-2.9	1702	1926	+1.6	2143
9		0055	-1.5	0350	0707	+2.2	0907	1255	-3.5	1749	2017	+2.0	2241
10		0144	-1.7	0439	0754	+2.2	0947	1330	-4.1	1836	2106	+2.2	2335
11		0234	-1.7	0530	0841	+2.3	1030	1408	-4.5	1922	2155	+2.4
12	0028	0326	-1.7	0623	0929	+2.3	1115	1450	-4.8	2008	2243	+2.7
13	0121	0420	-1.7	0717	1019	+2.3	1201	1538	-4.8	2055	2331	+2.7
14	0213	0515	-1.7	0814	1109	+2.2	1250	1629	-4.6	2140
15		0019	+2.7	0304	0609	-1.7	0913	1200	+2.0	1341	1723	-4.2	2225
16		0107	+2.7	0355	0704	-1.8	1017	1254	+1.8	1435	1821	-3.6	2309
17		0156	+2.4	0445	0801	-1.8	1128	1352	+1.5	1536	1931	-2.9	2353
18		0248	+2.2	0536	0858	-2.0	1248	1458	+1.3	1647	2045	-2.2
19	0038	0342	+2.1	0626	0954	-2.1	1413	1615	+1.1	1814	2152	-1.7
20	0126	0438	+1.9	0715	1050	-2.2	1529	1739	+1.2	1950	2255	-1.4
21	0219	0534	+1.8	0800	1145	-2.5	1634	1850	+1.4	2116	2356	-1.1
22	0314	0626	+1.8	0841	1236	-2.8	1728	1947	+1.7	2223
23		0052	-1.1	0406	0713	+1.8	0920	1321	-3.1	1814	2036	+1.9	2319
24		0144	-1.1	0454	0756	+1.8	0957	1403	-3.2	1856	2120	+2.0
25	0008	0233	-1.1	0540	0837	+1.8	1034	1443	-3.4	1934	2202	+2.2
26	0054	0321	-1.3	0623	0917	+1.7	1110	1524	-3.5	2010	2241	+2.2
27	0138	0410	-1.3	0707	0957	+1.7	1147	1604	-3.6	2044	2318	+2.3
28	0218	0457	-1.3	0750	1039	+1.6	1224	1643	-3.6	2115	2352	+2.3
29	0255	0542	-1.4	0833	1120	+1.5	1302	1719	-3.5	2144
30		0026	+2.3	0327	0626	-1.4	0918	1202	+1.5	1342	1750	-3.2	2212
31		0023	+2.2	0356	0708	-1.4	0856	1208	+1.3	1424	1815	-2.9	2132

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