4.5 earthquake near Norman, Oklahoma

**Cynthia** · 13th October 10, 07:58 AM

There was apparently a 4.5 earthquake near Norman, Oklahoma. I'm just north of Ft Worth, Texas and my hubby and I live on the 2nd floor. I've been in a bigger tremor before when I was visiting someone in Iowa, on a higher floor. This was so subtle, but definitely a little rattling and shaking! Surprised us, because we have never felt anything, even when there were little tremors going on in the area a year or two ago.

Anyone else feel that? Hope there were no problems up there. I haven't heard any details about it. Wonder if we'll get any more or if other areas will be active. What a way to wake up

**Cynthia** · 13th October 10, 08:11 AM

Looks like it was a 4.3 Sorry about that.. .haven't had my coffee yet ;)

(actually, I'm seeing 4.5 and 4.3, close enough... you get the idea)

**number17** · 13th October 10, 08:20 AM

I didn't notice anything here. I wondered why Meers Ok. had a seismograph office.
Andrew

**Cynthia** · 13th October 10, 08:26 AM

Most of my friends in the D/FW area didn't seem to notice anything. I'm not sure if it's that we live on the second floor and most of them (I think?) live on ground level, or if it's the location, since I'm probably more north than most of them. Not sure. Just took me by surprise.

Yeah, it's so weird to discover things like that. I'm not too surprised to see that earthquakes happen in places like that, but still... I mostly worry about tornadoes, you know?

**Cynthia** · 13th October 10, 08:30 AM

Another news link here. I'm in Denton county, very close to the Tarrant county line. The gas-drilling tremors they mentioned, we've never felt any of those since we're on the northern side of the metroplex.

**haukehaien** · 13th October 10, 09:30 AM

It was quite noticeable in Stillwater, about 60 miles north of the epicenter. Sitting at my desk, the whole building shook for several seconds, hard enough that we checked to see if anyone had driven a truck into the loading dock or some other part of the building. At my parents' house in Norman, it rattled the windows and doors pretty hard. There doesn't appear to have been any major damage.

And USGS had it as a 4.5 and then downgraded it to a 4.3, so that's where the two numbers came from. And now I'm seeing reports that they've upgraded it to a 5.1, which would be one of the strongest in the state's history. (It appears that USGS is saying 4.3 and OGS is saying 5.1, FWIW.)

**chewse** · 13th October 10, 09:43 AM

Hey Cynthia - I'm working at the DFW airport. I didn't feel anything; other than the usual take offs and landings.

**Cynthia** · 13th October 10, 10:00 AM

Thanks for the replies, everyone!

**Tobus** · 13th October 10, 10:50 AM

And USGS had it as a 4.5 and then downgraded it to a 4.3, so that's where the two numbers came from. And now I'm seeing reports that they've upgraded it to a 5.1, which would be one of the strongest in the state's history. (It appears that USGS is saying 4.3 and OGS is saying 5.1, FWIW.)

Wow, that's a big difference. Considering that the Richter scale is based on a logarithmic system where each integer value is 10 times the magnitude of the one below it (i.e. a 5.0 earthquake is ten times stronger than a 4.0), it's hard to believe they have this much spread in their readings.