| usgs earthquake notification service | 0.25 | 0.5 | 7228 | 36 | 12 |
| usgs earthquake notification services ens | 0.66 | 0.7 | 3235 | 41 | 27 |
| usgs earthquake email notification | 0.16 | 1 | 815 | 34 | 71 |
| usgs national earthquake information center | 0.44 | 1 | 989 | 43 | 96 |
| usgs earthquake alert system | 1.59 | 0.6 | 7533 | 28 | 7 |
| recent earthquakes usgs alerts | 0.35 | 0.4 | 8800 | 30 | 78 |
| usgs report an earthquake | 0.4 | 0.4 | 3131 | 25 | 44 |
| usgs earthquake event page | 0.43 | 0.9 | 4795 | 26 | 27 |
| usgs earthquake center website | 1.47 | 0.8 | 9919 | 30 | 41 |
| earthquake alert usgs map | 1.59 | 0.5 | 50 | 25 | 21 |
| usgs earthquake alert app | 1.81 | 0.1 | 9925 | 25 | 19 |
| usgs earthquake reports today | 1.09 | 0.4 | 4746 | 29 | 52 |
| usgs earthquake early warning system | 0.37 | 0.7 | 8183 | 36 | 20 |
| usgs earthquake alerts california | 0.94 | 0.1 | 2790 | 33 | 90 |
| usgs earthquake early warning | 1.64 | 0.1 | 5363 | 29 | 26 |
| recent earthquakes usgs report | 0.51 | 0.2 | 3689 | 30 | 81 |
| earthquakes alerts and notifications | 1.1 | 0.5 | 8527 | 36 | 50 |
| us geological service earthquakes | 0.4 | 0.1 | 6972 | 33 | 92 |
| usgs latest earthquakes news | 0.91 | 0.4 | 4909 | 28 | 96 |
| search earthquake catalog usgs.gov | 0.09 | 0.5 | 4185 | 34 | 58 |
| earthquake.usgs.gov | 0.76 | 0.3 | 9532 | 19 | 77 |
| http://earthquake.usgs.gov | 1.64 | 0.2 | 7415 | 26 | 71 |
| usgs.gov - latest earthquakes | 0.06 | 0.5 | 5891 | 29 | 22 |
