5.3 magnitude earthquake shakes southern Colorado- the largest quake in 40 years

August 23, 2011 COLORADO – Southern Colorado was rattled by a magnitude 4.6 earthquake Monday evening near Trinidad. That quake was overshadowed by a much stronger 5.3 magnitude earthquake which struck near the same region. A string of aftershocks followed. The same area had been struck by a gentler temblor earlier in the morning. According to the US Geological Survey, the 4.6 quake occurred at 5:30pm and was centered 16 miles west southwest of Trinidad or 20 miles west northwest of Raton, New Mexico. The quake occurred at a relatively shallow depth of 5.0 miles. Initial reports show the quake was felt in Trinidad and as far north as La Veta and Aguilar. To the south in New Mexico, Raton felt the shaking as well as Springer and Questa. This morning, a magnitude 2.9 quake struck the same area at 7:52am.  This also follows a magnitude 2.8 temblor in March. Other quakes up to magnitude 4.1 have been recorded in January 2010 as well as a series of quakes in the area in August 2009. The earthquake’s epicenter was 299 km (185 miles) S of DENVER, Colorado. –The Examiner  – Seismicity activity in the Sangre de Cristos Mountains: The Sangre de Cristos are fault block mountains with major fault lines running along both the east and west sides of the mountains. In places, there are also fault lines cutting right through the mountain chain. The mountains were pushed up about 27 million years ago, pretty much as one big chunk of rock. On the west side is the San Luis Valley with the Rio Grande Rift Zone running down the middle. On the southeast side is the Raton Basin with a quiet but still active volcano field. On the northeast side are the Wet Mountains and the Front Range, areas of pre-Cambrian rock raised up during the Colorado Orogeny some 1.7 billion years ago. The Blanca Massif is also pre-Cambrian rock while the main body of the Sangres themselves is composed of Permian-Pennsylvanian rock and a mix of igneous intrusions, conglomerates and shale that is only about 250 million years old. –Sangres
Activity along the many faults running in and through the Sangre de Cristos mountains could be one likely cause of the mysterious Taos Hum. This latest episode of quake activity near Trinidad may have been building for some time. See map    –The Extinction Protocol
 Colorado experiences largest quake in more than 40 years:  A moderate 5.3-magnitude earthquake that rattled southern Colorado early Tuesday morning was the largest to hit the state in more than 40 years, the U.S. Geological Survey said. The quake’s epicenter was seven miles southwest of Cokedale, and 180 miles south of Denver. There were no immediate reports of casualties. A dispatcher at the sheriff’s office in Las Animas County, which includes Cokedale, said the quake lasted almost 30 seconds. The office received reports of rocks falling on a highway and of some structure damage. It was the largest in a series of earthquakes that struck the area. As of 5 a.m. local time (7 a.m. ET), the USGS reported seven quakes centered just south of Cokedale since midnight. Amy Vaughan of the USGS said the 5.3 magnitude ties that of an earthquake Colorado suffered on August 9, 1967. In 1973, the USGS originally reported a quake with a magnitude of 5.7, but it turned out that was caused by an explosion, Vaughan said. –CNN
 contribution by J. Guffey/Warren
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54 Responses to 5.3 magnitude earthquake shakes southern Colorado- the largest quake in 40 years

  1. James says:

    Is that all you got mother nature? Bring it!

    Like

  2. radiogirl says:

    Pleas James I just bought a house in northern Colorado to escape the Texas heat.No need to encourage her.

    Like

  3. Aderma says:

    A few other quakes occurs yesterday next to the Yellowstone. Could these wake up the monster ?…

    Like

  4. Misia says:

    I’ve literally just arrived in Colorado a few hours ago!
    And I turn on my computer and see this.. WEIRD.

    But I think it’s still pretty safe here right?

    Like

  5. Wiseguy says:

    Wow, it’s escalating so fast, hard to keep up with all these events. Having a hard time to work and watch all this. Anyway, soon we won’t be able to work anymore, there’ll be no electricity, power grids will collapse.

    Like

  6. Wiseguy says:

    That’s it, 5.5 at 4.9 depth Colorado… More to come !!!

    Like

  7. Susan says:

    I live in Aurora Colorado. I felt an earthquake 15 min ago! Weird!

    Like

  8. Steve Gandy says:

    What a fright! I live in Colorado Springs, CO, and was awakened to my bed shaking at about 11:45PM or so (45:00 min. ago, now 8/23/11)! I was only aware of it for literally no more than what, 2 seconds? I thought someone was either heavy-footedly bounding up my apartment stairs or was dropping something heavy somewhere. Then I checked the earthquake sites…sure enough.

    Like

    • AWatchman4Him says:

      Hey Steve,
      My three daughters live in the Springs and I’m really concerned over this activity, so it wasn’t that bad there?

      Like

  9. Akash says:

    India : Kashmir :The Valley has experienced the third tremor since August 18.

    Like

  10. luisport says:

    I find this and i don’t know if it’s true: It’s shallow because it’s Volcanic:

    This is the “dormant” Capulin Volcano at 36.788889,-103.961667. It erupted last only 52,000 ya.

    Like

  11. Melissa says:

    I live in Castle Rock, CO, about 20 min north of CO Springs or so… was in bed last night, didn’t feel the quake, but this morning, around 5:15 MST, I woke to a bang and quick shaking felt through my upstairs bedroom floor. Didn’t know what was going on, had husband search the house, nothing. Turned on the news, saw this report, checked the usgs to see if another quake struck at that time, didn’t see anything. Don’t know if it is/was related or not.

    Like

  12. radiogirl says:

    Really Luisport,is that volcanoe in Co.?I realize we moved in closer proximity to yellowstone but at some point we as a family wanted to have a home base that was beautiful plus a situation that might provide a “where do we go from here” situation.If we get out at all.If that is indeed a possibility.Then I can’t think of a more beautiful place to hold ground with my family and pray.

    Now we live in a metropolitan area and feeling the effects of the problems with the border and drought.So it was time to move on as much as we love the good things about Texas,and there are many, but we’re getting older to old to deal with this heat.Take Care,R

    Like

  13. archaios says:

    instead of looking at one isolated event, one has to look at the total picture that reveals earth changes affecting North America. From the west to east coast there are many ” earth rattlings”
    that may shed light on the geologic process that is occurring in diverse places.

    Like

  14. luisport says:

    Erik Klemetti on August 23, 2011, 9:32 AM
    @Indy: There is actually a lot of historical seismicity in that part of Colorado – all part of the vestiges of the Rio Grande rift to my knowledge. And there is actually a lot of volcanism that stretches back 30 million years in southern CO and northern NM, including the San Juan Volcanic Field and the Jemez Caldera near Los Alamos.

    Like

  15. whatchagonnado says:

    Quakes r still occuring

    Like

  16. Raven says:

    http://earthquake.usgs.gov/earthquakes/recenteqsus/Maps/US2/36.38.-106.-104_eqs.php
    MAP 3.9 2011/08/23 14:11:13 37.032 -104.690 5.0 14 km ( 9 mi) SSW of Cokedale, CO
    MAP 2.6 2011/08/23 12:03:56 37.055 -104.761 5.0 16 km ( 10 mi) SW of Cokedale, CO
    MAP 2.1 2011/08/23 10:40:09 37.556 -105.031 5.0 6 km ( 4 mi) NNW of La Veta, CO
    MAP 2.3 2011/08/23 10:29:32 37.149 -104.608 4.7 1 km ( 1 mi) ENE of Cokedale, CO
    MAP 3.2 2011/08/23 09:37:57 37.099 -104.711 5.0 9 km ( 6 mi) WSW of Cokedale, CO
    MAP 2.5 2011/08/23 09:32:22 37.248 -104.705 5.0 14 km ( 9 mi) NNW of Cokedale, CO
    MAP 3.8 2011/08/23 07:17:58 37.099 -104.610 4.8 5 km ( 3 mi) S of Cokedale, CO
    MAP 3.2 2011/08/23 07:01:35 37.109 -104.550 5.0 2 km ( 2 mi) WSW of Starkville, CO
    MAP 3.5 2011/08/23 06:56:59 37.110 -104.722 5.0 10 km ( 6 mi) WSW of Cokedale, CO
    MAP 5.3 2011/08/23 05:46:19 37.070 -104.700 4.0 11 km ( 7 mi) SW of Cokedale, CO
    MAP 3.0 2011/08/23 02:48:52 37.056 -104.726 5.0 13 km ( 8 mi) SW of Cokedale, CO
    MAP 4.6 2011/08/22 23:30:20 37.050 -104.774 5.0 17 km ( 11 mi) SW of Cokedale, CO
    MAP 2.9 2011/08/22 13:52:34 37.094 -104.709 5.0 10 km ( 6 mi) SW of Cokedale, CO

    Like

  17. Wiseguy says:

    Yesterday, 415 tremors at El Hierro, record for this month.
    http://www.avcan.org/?m=Noticias&a=noticia&N=890

    Like

  18. Xavier says:

    FYI

    Tremor shakes Kashmir Valley

    timesofindia.indiatimes.com/india/Tremor-shakes-Kashmir-Valley/articleshow/9705737.cms

    Peace,
    Xavier

    Like

  19. luisport says:

    BreakingNews Breaking News
    MORE: USGS upgrades VA quake to 5.9 magnitude http://t.co/1IREwAA
    há 4 minutos »
    BreakingNews Breaking News
    VA-centered earthquake is reportedly felt as far away as New England, Toronto and Ohio – from broadcast
    há 8 minutos » BreakingNews Breaking News
    Widespread reports that cell service is disrupted in eastern US following quake; more at breakignnews http://t.co/FgwmzoT
    há 12 minutos

    Like

  20. NickK0 says:

    HOW ABOUT the quake that just shook the VA.and DC. area ?? !

    http://news.yahoo.com/earthquake-rocks-washington-area-180550044.html

    – Nick

    Like

  21. Susan D. says:

    What about the Virginia quake that just happened? Is that related to this Colorado quake?

    Like

  22. Hung says:

    5.9 mag rocks D.C

    Like

  23. Aaron says:

    5.9ish EQ in Virginia, near Washington DC today.

    http://edition.cnn.com/2011/US/08/23/virginia.quake/index.html

    Like

  24. Golfdad641 says:

    Quake, centered near Washington, felt along East Coast

    Washington (CNN) — An earthquake with a preliminary magnitude of 5.9 struck Tuesday near the nation’s capital and sent shock waves up and down the East Coast.

    “It’s one of the largest that we’ve had there,” said U.S. Geological Survey seismologist Lucy Jones. Aftershocks were a concern, she said. “People should be expecting (them), especially over the next hour or two,” she added.

    There were no immediate reports of injuries, and only minor damage to buildings was reported.

    The quake, which struck at 1:51 p.m., was shallow — just 3.7 miles deep — and was located 83 miles southwest of Washington and 41miles northwest of Richmond, Virginia, the USGS said.

    The FBI evacuated its building in Washington. At the Pentagon, police announced that anyone inside could “shelter in place” while security and emergency personnel checked the building for damage.

    A number of other buildings were evacuated, as far away as North Carolina and New York, witnesses reported.

    Court buildings downtown were evacuated. “I was trying to figure out what was going on, like everyone else,” said Manhattan District Attorney Cyrus Vance, who said he had been through many earthquakes when he lived in California. But such quakes are rare on the East Coast, USGS’s Jones said.

    Read More at: http://www.cnn.com/2011/US/08/23/virginia.quake/index.html

    2 nuclear reactors taken off line near quake site in Virginia

    Like

  25. lance says:

    What about Virginia? 5.9 Mag. 2011 August 23 17:51:04 UTC A few hours after colorado? Me thinks I smell HARRP.

    Like

  26. Gerald says:

    Waiting for your post on the Virginia 5.9 quake!

    Like

  27. T says:

    5.9 Quake in Virginia.

    Like

  28. whatchagonnado says:

    5.9 in Virginia

    Like

  29. lauraliz710 says:

    I have never felt an earthquake before, but I live close to the epicenter of the 5.9 in Virginia and I am a little freaked out about it and I’d really like to know what plates are around here (or faults?), and if there are going to be aftershocks. 😦

    Like

  30. HW says:

    5.9 earthquake in Virginia felt here in NH today.

    Like

  31. Yasmine says:

    Washington DC 5.8
    NYC 5.9 – mobile phones not working

    Is this due to sun solar flares?

    James don’t tempt mother nature.

    Like

  32. Misia says:

    5.8 earthquake in Virginia!!

    Like

  33. Michele Hufnagel says:

    Also, check out Virginia. Around 2 pm this afternoon there was an earthquake that was greater than a 5. Seems like that is an unusual area for an earthquake. Michele

    Like

  34. Elf Owl says:

    Tremors from the 5.9 DC area earthquake were felt here this afternoon in Cleveland/NE Ohio.

    Like

  35. Dakota says:

    News reporting that an – 5.8 Earthquake Hit Virginia and was felt In D.C., New York and Boston

    Aiyaiyaiy!!!

    Endless love to all…………………

    Like

  36. Louise says:

    They must have had the fear of their life in their underground governmental city near Denver airport (miles and miles supposedly).

    There is no where to hide from what is coming up. If you move, then you needed to move. If you stay put, then it is also all right.

    I almost moved to Christchurch in NZ in 2005 to run away from all this madness. Imagine!

    I live 20 miles east of the San Andreas fault, just north of San Francisco. A paradise! And maybe, despite all predictions, we will be the last ones to go. We never know. It would have started in Japan and would have ended in California. Full circle.

    But, only the Beloved knows. In the meantime, cheers and joy to all of us. Why? Because our Beloved loves us and we love our Beloved.

    Like

  37. sophia carlson says:

    Hear you guys are starting to rock over there, my thoughts and prayers are with you. from Christchurch NZ

    Like

  38. Dave says:

    Tuesday, August 23, 2011
    Magnitude 5.8 – 6.0 Earthquake Hits Virginia

    Like

  39. DR says:

    Maranthara, are you alright? Surprised that you haven’t put anything up here yet about the earthquakes along the East Coast. Hope you are doing fine.

    Like

  40. heather says:

    we had one on the east coast today…a bigger one

    Like

  41. acorbs says:

    This was the same earthquake that hit virginia just reduced in strength by the time it reached colorado! It was felt as far north as Toronto and Kitchener Ontario!

    Like

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