We have received emails and calls from people who are concerned. One person said: "i cant believe they want to risk greers ferry we could be seriously doomed .we are a rocking rolling here man 23 since midnite and so far only 4 on usgs website and one downgraded from 3.0 to 2.7 are we manipulating the data now?" OMG.
Just a suggestion. We have received reports from people who describe their earthquake experiences as more severe than the final USGS "report" of the Richter Scale reading. The USGS is allowed to adjust the reading up or down, based on field input. Please give them information about what you are experiencing here and also keep your own written journal. Include time, date and a narrative about the experience and any damage. The scale below could be a useful reference.
The Richter Scale. A very important fact in this scale is that as each number goes up, the earthquake increases *10 times* in power
1. Felt by instruments only
2. Felt by sensitive people and sensitive animals (10 times #1)
3. Felt by many people--feels like a passing truck (100 times #1)
4. Felt by everyone; pictures fall off the wall (1,000 times #1)
5. Damage--may cause weak walls to crack and fall (10,000 times #1)
6. A destuctive earthquake in populated areas; falling smokestacks, etc. (100,000 times #1)
7. A major earthquake causing serious damage (1,000,000 times #1)
8. A disaster--a great earthquake that produces total destruction to nearby communities {1906 in San Francisco--8.3} (10,000,000 times #1)
9. Libson, Portugal had the highest ever in 1775 at 8.9. (100,000,000 times #1)
An interesting article about the New Madrid Seismic Zone is here.
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