Swanage visibility and dive conditions
See bottom of table for explanation of headings. The potential outlook for diving over the next few days is given in good faith and without any guarantee!
Mary Jo and Sidewinder of Swanage Boat Charters are available for charter or individual spaces - contact Martin and Patricia to book.
| Date | Time | Site | Viz (m) | Cloud / Sun / Rain |
Tide hr +/- HW |
Present Sea State / Swell / Dive conditions |
Comments / Potential Outlook |
| Sun 29/04/07 |
09:55 | Kyarra 50°34.9N 001°56.6W |
4.3 | cloud 1, sun at 25° |
-1 | water colour - green/brown, sea state - slight, dive conditions - OK. | similar |
| Mon 16/04/07 |
10:45 | Valentine Tanks 50°39.4N 001°53.4W |
3.0 | cloud 4, sun at 30° |
+1 | water colour - green/brown, sea state - smooth, dive conditions - OK. | similar |
| Sun 15/04/07 |
09:35 | Valentine Tanks 50°39.4N 001°53.4W |
2.7 | cloud 0, sun at 20° |
+1 | water colour - green/brown, sea state - smooth/ very fine particles in water, dive conditions - poor. | similar |
| Sat 14/04/07 |
08:40 | Kyarra 50°34.9N 001°56.6W |
4.2 | cloud 8, sun at 45° |
+1 | water colour - green, sea state - smooth, dive conditions - OK . | improving |
| Fri 13/04/07 |
13:04 | Kyarra 50°34.9N 001°56.6W |
3.8 | cloud 8 |
+6 | water colour - green, sea state - smooth, dive conditions - OK . | similar |
| Fri 13/04/07 |
08:30 | Kyarra 50°34.9N 001°56.6W |
4.6 | cloud 8 |
+1 | water colour - green, sea state - smooth, dive conditions - OK . | similar |
| Tue 10/04/07 |
10:45 | Peveril Ledge 50°36.4N 001°56.0W |
4.1 | cloud 6, sun at 30° |
+6 | water colour - green, sea state - smooth, dive conditions - OK . | improving |
| Mon 09/04/07 |
14:30 | Kyarra 50°34.9N 001°56.6W |
2.7 | cloud 0, sun at 45° |
+1 | water colour - green, sea state - smooth, dive conditions - poor . | improving |
| Mon 09/04/07 |
08:45 | Kyarra 50°34.9N 001°56.6W |
1.9 | cloud 0, sun at 25° |
+6 | water colour - green, sea state - smooth, dive conditions - poor . | similar |
| Sat 07/04/07 |
13:45 | Kyarra 50°34.9N 001°56.6W |
2.2 | cloud 2, sun at 45° |
+1 | water colour - green, sea state - smooth, dive conditions - poor . | similar |
| Fri 06/04/07 |
13:15 | Kyarra 50°34.9N 001°56.6W |
2.1 | cloud 1, sun at 45° |
+1 | water colour - green, sea state - smooth, dive conditions - poor . | improving |
Visibility is the depth to which a white disk (secchi disk) is visible from the surface, measured as the average of two readings - the depth to which it is lowered and just no longer visible, and the depth at which it reappears when raised. (Usually there is not too much difference between the two). A tilde indicates an approximate reading that is estimated rather than measured (eg: measured: 5, approx: ~5). Note that surface visibility is often different to visibility at depth. Cloud cover and the height of the sun (indicated by time of day, and/or the approximate angle of the sun in the sky) and sea state will also affect visibility. Cloud cover is measured in octas (8=8/8 = total cloud cover, 0=0/8 = clear sky). The state of the tide when the viz was measured is indicated as number of hours +/- HW Greenock and the approximate tidal cycle is indicated by the background: blue = Neaps, red = Springs, yellow = in between.