Magnitude 3.6 WESTERN KENTUCKY 2005 June 20 12:21:42 UTC

Advanced National Seismic System ^ | 2005 June 20 12:21:42 UTC | Advanced National Seismic System

[Ernest_at_the_Beach]

Recent Earthquake Activity in the USA

Magnitude 3.6 - WESTERN KENTUCKY
2005 June 20 12:21:42 UTC

Preliminary Earthquake Report
Cooperative New Madrid Seismic Network

A minor earthquake occurred at 12:21:42 (UTC) on Monday, June 20, 2005. The magnitude 3.6 event has been located in WESTERN KENTUCKY. The hypocentral depth was estimated to be 21 km (13 miles). (This event has been reviewed by a seismologist.)

Magnitude	3.6
Date-Time	Monday, June 20, 2005 at 12:21:42 (UTC) = Coordinated Universal Time Monday, June 20, 2005 at 7:21:42 AM = local time at epicenter
Location	36.920°N, 89.000°W
Depth	21.1 km (13.1 miles)
Region		WESTERN KENTUCKY
Distances	4 km (3 miles) SW (231°) from Blandville, KY 5 km (3 miles) N (10°) from Bardwell, KY 9 km (6 miles) SE (124°) from Wickliffe, KY 37 km (23 miles) WSW (243°) from Paducah, KY 152 km (94 miles) WNW (286°) from Clarksville, TN 219 km (136 miles) SSE (150°) from St. Louis, MO
Location Uncertainty	horizontal +/- 0.6 km (0.4 miles); depth +/- 1.7 km (1.1 miles)
Parameters	Nst= 26, Nph= 26, Dmin=16 km, Rmss=0.27 sec, Gp= 83°, M-type=moment magnitude (Mw), Version=D
Source		Cooperative New Madrid Seismic Network
Event ID	nm747
	Felt Reports	Felt (IV) at Bardwell, Barlow, Cunningham, Fancy Farm, Hickory, Wickliffe and Wingo; (III) at Calvert City, Kevil, La Center, Mayfield, Paducah and West Paducah. Also felt (IV) at Cairo, Illinois and (III) at Cape Girardeau, Missouri. Felt in parts of Arkansas, Illinois, Kentucky, Missouri and Tennessee.

[Strategerist]

What with all of the seismic activity out west over the last two weeks, why, the conspiracy kooks and ecofascists will be in full catastrophe mode!

Well, it's the apocalyptikooks that get the most jazzed.

In the grand scheme of things there really hasn't been all that much seismic activity in the world over the last two weeks.

It's just that prior to that seismic activity was really really really low, below average, in the couple months before those few weeks.

[skinkinthegrass]

Thanks. :)

[Vision]

If it disturbed the bourbon I'm gonna be pissed

[Ernest_at_the_Beach]

How do you adjust UTC time to CST time?

[Das Outsider]

New Madrid's "Big One" was expected to occur back in '90. I say "expected" because only one source, Browning, had predicted it. Very few, if any, real seismologists bought it, but the public did. Incidentally, some Jehovah's Witnesses, with their penchant for predicting the end of the world down to the minute, also fell for the rejected prophecy. Anybody remember that?

D.O.

[BIGLOOK]

Sarge, New Madrid had a quake around 1811 that was the new nations largest. Estimated (best guess) 8.0.

3.6 wouldn't knock a little girl off stride in a hopscotch game. Still, temblors in the East worry the folks there.

[Old Sarge]

The FEMA folks I worked with while with DHS, always watched for anything related with New Madrid. It's the thing to do, for that sleeping monster.

[Das Outsider]

It's just that prior to that seismic activity was really really really low, below average, in the couple months before those few weeks.

You'll recall that activity in California was quite active on an almost daily basis for several years from--don't quote me on this--the mid- to late-80's into the early 90's. At least that's the period that sticks out for me.

[Ernest_at_the_Beach]

AP story just posted:

Southern Appalachia sees spate of small earthquakes

[Knitting A Conundrum]

UTC is 6 hours ahead of CST.

5 hours Daylight time, I believe. 12:00 UTC is 6 am cST or 5 AM Central Daylight time

[Graybeard58]

Estimated (best guess) 8.0.

That would be the low end estimate. Estimates I have seen have been 8.8 to 9.0 - A huge difference.

[Strategerist]

How do you adjust UTC time to CST time?

During Daylight savings it's GMT-6 hours; outside of Daylight Savings it's GMT-5 hours.

[Strategerist]

I say "expected" because only one source, Browning, had predicted it. Very few, if any, real seismologists bought it, but the public did.

No legitimate scientists bought it at all; Browning was essentially a kook; not a scrap of training in seismology or geology.

Like many bogus predictors, his crap prediction was based on lunar tidal forces. Sadly the media gave it a great deal of attention.

[Ernest_at_the_Beach]

OK, thanks, so that would be 8 hours PST during Summer and 7 hours during winter....

[al baby]

It depends on what the meaning of time "is is "

[Strategerist]

That would be the low end estimate. Estimates I have seen have been 8.8 to 9.0 - A huge difference.

Several recent papers have revised the magnitude estimates downward; basically no seismologists believe any of the three quakes were anywhere remotely close to Magnitude 9.

NEIC lists the largest of the New Madrid quakes at 8.1 now.

I've seen a few papers where some have it down in the high sevens; it MIGHT not have even been the largest quake in the lower 48, surpassed by either the 1857 or 1906 quakes in CA.

[Das Outsider]

The one in February of 1812 was close to MSn 9.0. Its predecessors ranged between 8 and 8.5.

[BIGLOOK]

No Richter scale then....but I believe there was another scale that measured the amount of destruction and the reaction of the population to the event. I forget what it was called. But I do recall that the upper range (above an 8.0 on the Richter scale) caused mass panic.

The 1811 quake at New Madrid changed the course of the Big Muddy. I've no doubt it also caused mass panic.

The difference between 8.0 and (low ball) 8.8 is huge; I agree.

[TASMANIANRED]

We hicks in Ky have a fault all our own.

California is not the only place with faults.

[TASMANIANRED]

The distilleries are just fine.

They are mostly in the center of the state.