The 1980 eruption of Mount St. Helens at 08:32. on May 18, was was
preceded by a two-month series of earthquakes and steam-venting
episodes.
http://en.wikipedia.org/wiki/1980_er...unt_St._Helens

17 Jan 21:19
24 Jan 13:58
1 Feb 02:21
9 Feb 07:35
16 Feb 08:51
23 Feb 00:14
1 Mar 21:00
9 Mar 23:49
16 Mar 18:56
23 Mar 12:31
31 Mar 15:14
8 Apr 12:06
15 Apr 03:46
22 Apr 02:59
30 Apr 07:35
7 May 20:51
14 May 12:00
21 May 19:16
29 May 21:28
6 Jun 02:53
12 Jun 20:38
20 Jun 12:32
28 Jun 09:02
5 Jul 07:27
12 Jul 06:46
20 Jul 05:51
27 Jul 18:54
3 Aug 12:00
10 Aug 19:09
18 Aug 22:28
26 Aug 03:42
1 Sep 18:08
9 Sep 10:00
17 Sep 13:54
24 Sep 12:08
1 Oct 03:18
9 Oct 02:50
17 Oct 03:47
23 Oct 20:52
30 Oct 16:33
7 Nov 20:43
15 Nov 15:47
22 Nov 06:39
29 Nov 09:59
7 Dec 14:35
15 Dec 01:47
21 Dec 18:08
29 Dec 06:32

The crucial dates are the two phases prior to the eruption on the 18th
May and the phase that broke the spell
May 7 20:51 May 14 12 May 21 19:16.
http://eclipse.gsfc.nasa.gov/phase/phases1901.html
The importance of which are that they reflect a certain similarity to
recent dates and more importantly, times.

I included the whole set of dates and times so that anyone interested
enough can make more comparisons.