EQ swarm at Mt. Hood?

There are been lots of Micro-quakes just south of Mt. Hood in Oregon over the past day. I will say, I am not a huge fan of the PNSN's new EQ page. It displays even negative magnitude quakes (what?) and the tiniest tremors. Still, I check this page daily and have for years and this activity seems unusual. Please take a look at the info and the links and tell me what you think.

[link to www.pnsn.org]

webicorders, scroll down to find the 2 on Mt. Hood.
[link to old.pnsn.org]

Mag Time (Local) Depth (Km)
0.5 2012/02/24 06 34 06 PST 5.6
0.5 2012/02/24 01 12 04 PST 6.2
0.6 2012/02/24 00 13 55 PST 1.3
1.1 2012/02/23 19 43 28 PST 13.3
0.3 2012/02/23 19 21 00 PST 5.0
1.0 2012/02/23 18 25 42 PST 5.4
0.7 2012/02/23 18 15 02 PST 5.7
0.2 2012/02/23 18 03 41 PST 8.6
0.2 2012/02/23 17 18 11 PST 5.9
1.0 2012/02/23 16 12 33 PST 5.2
0.5 2012/02/23 15 47 59 PST 6.1
0.5 2012/02/23 15 15 06 PST 6.2
0.5 2012/02/23 15 10 57 PST 5.8
1.0 2012/02/23 13 51 37 PST 5.8
0.5 2012/02/23 13 31 11 PST 6.2
0.6 2012/02/23 13 29 55 PST 6.0
0.9 2012/02/23 13 27 39 PST 5.8
1.5 2012/02/23 13 26 15 PST 5.8
0.5 2012/02/23 13 15 50 PST 7.6
1.7 2012/02/23 13 09 04 PST 6.4
0.2 2012/02/23 13 05 11 PST 5.9
1.6 2012/02/23 13 03 59 PST 0.0
0.7 2012/02/23 12 58 25 PST 5.9
0.2 2012/02/23 12 56 47 PST 6.2
0.3 2012/02/23 12 50 28 PST 6.3
0.1 2012/02/23 12 36 28 PST 7.1
0.1 2012/02/23 12 36 15 PST 6.2
0.9 2012/02/23 12 32 43 PST 6.3
-0.3 2012/02/23 12 30 50 PST 4.2
0.9 2012/02/23 12 10 15 PST 0.0
0.8 2012/02/23 11 43 09 PST 8.1
1.0 2012/02/23 05 50 31 PST 9.3