EARTHQUAKES MONTHLY - FEBRUARY 2013
WORLD
Worldwide, February 2013 was a very active month, with a total of 261 5.0+ magnitude earthquakes, and of those, twenty four were of 6.0+ in magnitude, and five were of 7.0+.
The monthly total of 261, and the EQPD rate of 9.32 represents the highest monthly totals since the Honshu, Japan series of earthquakes that occurred in March of 2011 ( 577and18.61 ). The five 7.0+ magnitude earthquakes for February 2013, are the most in any month since September of 2007 had six such quakes.
February 6th was the most active day of the month with, get this, 75 5.0+ magnitude earthquakes, with seven of those being of 6.0+, and three being of 7.0+. What a day !
The strongest earthquake of the month was a 7.9 magnitude that struck the Santa Cruz Islands, also occurring on February 6th.
M 7.9 - SANTA CRUZ ISLANDS - 2013-02-06 01:12:25 UTC
Magnitude / Mw 7.9Region / SANTA CRUZ ISLANDS
Date time / 2013-02-06 01:12:25.0 UTC
Location / 10.78 S ; 165.09 E
Depth / 20 km
Distances / 2243 km NE Brisbane (pop 1,843,392 ; local time 11:12:25.7 2013-02-06)
1651 km NW Suva (pop 199,455 ; local time 13:12:25.7 2013-02-06)
571 km NW Luganville (pop 13,397 ; local time 12:12:25.7 2013-02-06)
81 km W Lata (pop 538 ; local time 12:12:25.7 2013-02-06)
/
Source parameters reviewed by a seismologist
USGS/NEIC Denver, USA / Tsunami information at:
Japan Meteorological Agency Tokyo, Japan
Pacific Tsunami Warning CentreHawai, USA
Seismic Network Operations
IU HNR
Honiara, Solomon Islands
Worldwide 6.0+ Earthquakes, February 2013 (24):
DATE / TIME (UTC) / LATITUDE / LONGITUDE / DEPTH (KM) / MAGNITUDE / REGION NAME02/28/13 / 14:05:52.00 / 50.92 N / 157.36 E / 60 / 6.8 / Kuril Islands
02/22/13 / 12:01:59.00 / 27.89 S / 62.18 W / 588 / 6.1 / Santiago Del Estero, Argentina
02/16/13 / 05:16:18.00 / 36.27 S / 178.02 E / 206 / 6 / Off E. Coast of N. Island, NZ
02/16/13 / 04:37:35.00 / 5.96 N / 125.85 E / 94 / 6.2 / Mindanao, Philippines
02/14/13 / 13:13:53.00 / 67.62 N / 142.66 E / 10 / 6.6 / Northeastern Sakha, Russia
02/10/13 / 18:39:35.00 / 10.95 S / 165.47 E / 30 / 6.1 / Santa Cruz Islands
02/09/13 / 21:01:22.00 / 10.94 S / 165.77 E / 10 / 6.6 / Santa Cruz Islands
02/09/13 / 14:16:07.00 / 1.17 N / 77.41 W / 134 / 7 / Columbia
02/08/13 / 15:26:37.00 / 10.83 S / 166.05 E / 10 / 7 / Santa Cruz Islands
02/08/13 / 11:12:12.00 / 10.90 S / 165.92 E / 10 / 6.9 / Santa Cruz Islands
02/07/13 / 18:59:16.00 / 10.95 S / 165.67 E / 10 / 6.7 / Santa Cruz Islands
02/07/13 / 00:30:11.00 / 11.66 S / 164.98 E / 10 / 6.1 / Santa Cruz Islands Region
02/06/13 / 11:53:54.00 / 11.25 S / 165.81 E / 10 / 6 / Santa Cruz Islands
02/06/13 / 06:35:20.00 / 10.76 S / 164.54 E / 10 / 6.1 / Santa Cruz Islands Region
02/06/13 / 01:54:15.00 / 10.46 S / 165.73 E / 10 / 7 / Santa Cruz Islands
02/06/13 / 01:23:20.00 / 11.16 S / 165.05 E / 10 / 7.1 / Santa Cruz Islands
02/06/13 / 01:16:38.00 / 10.96 S / 164.83 E / 10 / 6.2 / Santa Cruz Islands Region
02/06/13 / 01:12:25.00 / 10.78 S / 165.09 E / 20 / 7.9 / Santa Cruz Islands
02/06/13 / 00:07:22.00 / 10.82 S / 165.25 E / 10 / 6 / Santa Cruz Islands
02/02/13 / 18:58:07.00 / 10.84 S / 165.31 E / 10 / 6 / Santa Cruz Islands
02/02/13 / 14:17:34.00 / 42.79 N / 143.17 E / 100 / 6.9 / Hakkaido, Japan Region
02/01/13 / 22:18:35.10 / 11.07 S / 165.40 E / 18 / 6.2 / Santa Cruz Islands
02/01/13 / 22:16:34.00 / 10.84 S / 165.44 E / 10 / 6.3 / Santa Cruz Islands
02/01/13 / 05:36:41.00 / 11.09 S / 165.59 E / 10 / 6 / Santa Cruz Islands
source:
February In Earthquake History
These are the strongest earthquakes to occur in the month of February since 1900. Check out the links below for more information on a few of these quakes.
Date - UTC - Time / Latitude / Longitude / Magnitude / Fatalities / Region2010/02/27 06:34:14 / -35.846 / -72.719 / 8.8 / 577 / Offshore Maule, Chile
1996/02/17 05:59 / -0.891 / 136.952 / 8.2 / 166 / Irian Jaya region, Indonesia
1965/02/04 05:01 / 51.21 / -178.50 / 8.7 / Rat Islands, Alaska
1938/02/01 19:04 / -5.05 / 131.62 / 8.5 / Banda Sea
1923/02/03 16:01 / 54.0 / 161.0 / 8.5 / Kamchatka
,
Month / Days / 5.0^ / EQPD / 6.0^ / 7.0^FEB 2013 / 28 / 261 / 9.32 / 24 / 5
FEB 2012 / 29 / 182 / 6.28 / 10 / 1
FEB 2011 / 28 / 135 / 4.82 / 16 / 0
FEB 2010 / 28 / 226 / 8.07 / 19 / 2
FEB 2009 / 28 / 161 / 5.75 / 13 / 1
FEB 2008 / 29 / 121 / 4.17 / 21 / 2
FEB 2007 / 28 / 111 / 3.96 / 6 / 0
FEB 2006 / 28 / 99 / 3.53 / 10 / 1
FEB 2005 / 28 / 172 / 6.14 / 15 / 1
FEB Totals / 254 / 1468 / 5.77 / 134 / 13
The Numbers: *(indicates totals from Oct-Dec 2004)
Month / Days / 5.0^ / EQPD / 6.0^ / 7.0^FEB 2013 / 28 / 261 / 9.32 / 24 / 5
JAN 2013 / 31 / 115 / 3.7 / 8 / 1
2013 Total / 59 / 376 / 6.37 / 32 / 6
DEC 2012 / 31 / 132 / 4.25 / 11 / 2
NOV 2012 / 30 / 158 / 5.26 / 12 / 1
OCT 2012 / 31 / 152 / 4.9 / 12 / 1
SEP 2012 / 30 / 146 / 4.86 / 9 / 2
AUG 2012 / 31 / 140 / 4.51 / 13 / 3
JUL 2012 / 31 / 126 / 4.06 / 8 / 0
JUN 2012 / 30 / 120 / 4 / 10 / 0
MAY 2012 / 31 / 115 / 3.7 / 11 / 0
APR 2012 / 30 / 187 / 6.23 / 19 / 3
MAR 2012 / 31 / 143 / 4.61 / 13 / 2
FEB 2012 / 29 / 182 / 6.28 / 10 / 1
JAN 2012 / 31 / 173 / 5.58 / 10 / 2
2012 Total / 366 / 1774 / 4.84 / 138 / 17
2013 Total / 59 / 376 / 6.37 / 32 / 6
2012 Total / 366 / 1774 / 4.84 / 138 / 17
2011 Total / 365 / 2356 / 6.45 / 212 / 19
2010 Total / 365 / 2082 / 5.7 / 174 / 23
2009 Total / 365 / 1758 / 4.81 / 153 / 16
2008 Total / 366 / 1639 / 4.47 / 168 / 13
2007 Total / 365 / 1950 / 5.34 / 172 / 18
2006 Total / 365 / 1813 / 4.96 / 126 / 11
2005 Total / 365 / 2017 / 5.52 / 122 / 11
2004* / 92 / 519 / 5.64 / 45 / 9
TOTAL / 3073 / 16284 / 5.29 / 1342 / 143
CENTRAL/EASTERN UNITED STATES
In the Central/Eastern United States region, February 2013 had 49 recorded earthquakes, of which three of those were of 3.0+ in magnitude.
February 24th was the most active day of the month with six recorded earthquakes, those quakes registered between 1.3 and 2.7 in magnitude.
The strongest earthquake of the month might have been a 4.0 magnitude that was recorded by the Oklahoma Geological Survey for an earthquake that occurred near Midwest City, Oklahoma on February 27th (That quake was downgraded to a 3.5 magnitude by the USGS). But officially it was a 3.6 magnitude that struck near Trumann, Arkansas on February 23rd (Originally recorded as a 3.9 in magnitude). The info for the Arkansas quake will be posted in the New Madrid section, so here are the particulars for the Oklahoma quake:
Recent Earthquakes in Central US
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, National Earthquake Information Center
Version #7: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.
A minor earthquake occurred at 1:51:13 PM (CST) on Wednesday, February 27, 2013 .
The magnitude 3.5 event occurred 4 km (2 miles) E (92 degrees) of Midwest City, OK .
The hypocentral depth is 5 km ( 3 miles).
Time / Wednesday, February 27, 2013 at 1:51:13 PM (CST)
Wednesday, February 27, 2013 at 19:51:13 (UTC)
Distance from / Midwest City, OK - 4 km (2 miles) E (92 degrees)
Del City, OK - 8 km (5 miles) E (85 degrees)
Lake Aluma, OK - 13 km (8 miles) SE (141 degrees)
Coordinates / 35 deg. 26.9 min. N (35.448N), 97 deg. 21.2 min. W ( 97.354W)
Depth / 5.2 km (3.2 miles)
Quality / Poor
Location Quality Parameters / Nst= 47, Nph= 52, Dmin=13.4 km, Rmss=0.98 sec, Erho=11 km, Erzz=2.8 km, Gp=75.6 degrees
Event ID# / usc000fe1c
4.0 Earthquake Rattles Central Oklahoma:
February 2013 EQ's in Central/Eastern US (49)
Earthquakes recorded for February 2013. Times are local (CST or CDT). The most recent earthquakes are at the top of the list. Magnitude 3 and greater earthquakes are printed in bold type. The top three magnitudes greater than or equal to 3 are in red.
MAG DATE LOCAL-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
MAP 3.5 2013/02/27 13:51:13 35.448N 97.354W 5.2 6 km ( 4 mi) ENE of Midwest City, OK
map 2.5 2013/02/27 06:30:08 35.442N 97.243W 4.9 14 km ( 9 mi) E of Midwest City, OK
map 2.1 2013/02/26 09:55:05 37.203N 89.322W 10.6 6 km ( 4 mi) SW of Tamms, IL
map 2.0 2013/02/26 04:31:36 44.895N 74.523W 12.5 19 km (12 mi) WNW of Malone, NY
map 1.3 2013/02/24 21:50:11 36.479N 89.544W 8.9 12 km ( 7 mi) S of New Madrid, MO
map 2.7 2013/02/24 15:07:50 32.446N 96.987W 5.1 4 km ( 3 mi) S of Midlothian, TX
map 2.0 2013/02/24 09:38:56 35.625N 90.553W 12.0 7 km ( 4 mi) SW of Trumann, AR
map 2.6 2013/02/24 06:56:02 32.527N 96.911W 5.0 1 km ( 0 mi) WSW of Glenn Heights, TX
map 2.5 2013/02/24 04:35:52 32.462N 96.912W 5.0 9 km ( 6 mi) S of Oak Leaf, TX
map 1.7 2013/02/24 00:15:30 36.451N 89.608W 11.9 9 km ( 5 mi) ENE of Portageville, MO
map 2.5 2013/02/23 23:52:40 35.626N 90.553W 12.4 7 km ( 4 mi) SW of Trumann, AR
MAP 3.6 2013/02/23 16:28:38 35.626N 90.558W 14.1 7 km ( 4 mi) SW of Trumann, AR
map 2.1 2013/02/23 12:33:06 35.506N 92.424W 3.7 15 km (10 mi) N of Damascus, AR
map 1.4 2013/02/23 02:17:22 36.274N 89.474W 5.9 2 km ( 1 mi) NE of Ridgely, TN
map 1.9 2013/02/22 18:00:08 35.493N 92.152W 3.2 10 km ( 6 mi) SSE of Higden, AR
map 2.2 2013/02/22 02:23:33 32.951N 80.165W 6.9 6 km ( 4 mi) S of Lincolnville, SC
map 1.5 2013/02/21 23:26:41 36.834N 89.439W 6.5 8 km ( 5 mi) NW of East Prairie, MO
map 2.6 2013/02/20 17:28:22 35.833N 90.145W 16.3 6 km ( 4 mi) SSE of Manila, AR
map 1.2 2013/02/20 07:01:57 36.275N 89.471W 6.1 2 km ( 1 mi) NE of Ridgely, TN
map 2.0 2013/02/20 03:39:05 45.099N 74.207W 4.9 22 km (13 mi) NNW of Chateaugay, NY
map 2.3 2013/02/19 03:53:05 41.238N 77.055W 10.8 2 km ( 1 mi) SSW of Garden View, PA
MAP 3.3 2013/02/18 22:59:45 48.154N 83.206W 15.1 203 km (126 mi) NNE of Sault Ste. Marie, MI
map 0.8 2013/02/18 21:24:05 36.482N 89.541W 7.6 12 km ( 7 mi) S of New Madrid, MO
map 2.7 2013/02/17 20:54:05 35.505N 97.256W 5.0 14 km ( 9 mi) ENE of Midwest City, OK
map 1.7 2013/02/17 04:16:58 36.490N 89.567W 9.4 11 km ( 7 mi) SSW of New Madrid, MO
map 1.5 2013/02/17 02:46:22 36.317N 89.546W 10.2 8 km ( 5 mi) NW of Ridgely, TN
map 1.0 2013/02/16 16:23:09 36.274N 89.472W 5.6 2 km ( 1 mi) NE of Ridgely, TN
map 1.3 2013/02/16 16:19:42 36.275N 89.475W 5.8 2 km ( 1 mi) NE of Ridgely, TN
map 1.8 2013/02/16 02:50:48 35.692N 93.017W 12.6 25 km (16 mi) N of Hector, AR
map 2.0 2013/02/16 02:23:42 35.685N 93.028W 12.7 25 km (15 mi) N of Hector, AR
map 1.8 2013/02/16 01:44:26 43.080N 74.100W 6.4 22 km (14 mi) WNW of Ballston Spa, NY
map 2.0 2013/02/15 19:15:18 35.462N 92.180W 4.1 9 km ( 6 mi) NNE of Quitman, AR
map 2.5 2013/02/12 08:56:53 35.462N 96.539W 5.0 19 km (12 mi) NW of Bearden, OK
map 1.5 2013/02/11 14:37:27 36.253N 89.469W 6.6 2 km ( 1 mi) SE of Ridgely, TN
map 1.6 2013/02/11 13:23:19 36.422N 89.525W 8.4 7 km ( 4 mi) NW of Tiptonville, TN
map 2.2 2013/02/11 01:14:54 36.284N 89.466W 6.1 3 km ( 2 mi) NE of Ridgely, TN
map 1.4 2013/02/09 22:07:45 36.476N 89.517W 6.3 12 km ( 7 mi) NNW of Tiptonville, TN
map 1.8 2013/02/09 19:05:07 35.903N 89.987W 4.4 6 km ( 4 mi) SSW of Gosnell, AR
map 1.6 2013/02/09 17:15:13 36.374N 89.541W 9.2 6 km ( 4 mi) W of Tiptonville, TN
map 2.9 2013/02/09 03:58:02 37.071N 104.863W 5.0 20 km (13 mi) WSW of Cokedale, CO
map 1.5 2013/02/07 13:26:33 36.371N 89.546W 9.8 7 km ( 4 mi) W of Tiptonville, TN
map 1.3 2013/02/06 15:53:02 36.532N 89.566W 7.6 7 km ( 4 mi) SSW of New Madrid, MO
map 2.0 2013/02/05 05:47:12 34.778N 80.998W 0.6 7 km ( 4 mi) NNE of Richburg, SC
map 0.9 2013/02/05 05:40:06 36.266N 89.486W 7.5 0 km ( 0 mi) NNE of Ridgely, TN
map 1.6 2013/02/04 14:24:31 36.535N 89.619W 7.6 10 km ( 6 mi) SW of New Madrid, MO
map 2.1 2013/02/03 00:40:58 31.829N 94.277W 5.0 11 km ( 7 mi) WNW of Center, TX
map 1.4 2013/02/02 02:30:09 36.391N 89.490W 4.6 2 km ( 1 mi) NW of Tiptonville, TN
map 2.5 2013/02/02 00:47:03 34.963N 84.933W 9.7 2 km ( 1 mi) ENE of Cohutta, GA
map 2.7 2013/02/01 21:44:33 34.904N 97.427W 5.0 8 km ( 5 mi) SSE of Washington, OK
The Numbers:
MONTH / DAYS / EQ / EQPD / 3.0^ / 4.0^FEB 2013 / 28 / 49 / 1.75 / 3 / 0
JAN 2013 / 31 / 44 / 1.41 / 7 / 1
2013 Total / 59 / 93 / 1.57 / 10 / 1
DEC 2012 / 31 / 60 / 1.93 / 3 / 0
NOV 2012 / 30 / 46 / 1.53 / 5 / 1
OCT 2012 / 31 / 50 / 1.61 / 6 / 0
SEP 2012 / 30 / 50 / 1.67 / 8 / 0
AUG 2012 / 31 / 54 / 1.74 / 6 / 0
JUL 2012 / 31 / 61 / 1.96 / 2 / 0
JUN 2012 / 30 / 76 / 2.53 / 7 / 0
MAY 2012 / 31 / 50 / 1.61 / 6 / 1
APR 2012 / 30 / 48 / 1.6 / 7 / 1
MAR 2012 / 31 / 46 / 1.48 / 4 / 0
FEB 2012 / 29 / 36 / 1.24 / 4 / 0
JAN 2012 / 31 / 68 / 2.19 / 6 / 0
2012 Total / 366 / 645 / 1.76 / 64 / 3
DEC 2011 / 31 / 83 / 2.67 / 9 / 1
NOV 2011 / 30 / 115 / 3.83 / 39 / 4
OCT 2011 / 31 / 112 / 3.61 / 6 / 1
SEP 2011 / 30 / 70 / 2.33 / 10 / 3
09/11-12/11 / 122 / 380 / 3.11 / 64 / 9
2013 Total / 59 / 93 / 1.57 / 10 / 1
2012 Total / 366 / 645 / 1.76 / 64 / 3
09/11-12/11 / 122 / 380 / 3.11 / 64 / 9
TOTAL / 547 / 1118 / 2.04 / 138 / 13
NEW MADRID REGION
EARTHQUAKES IN THE NEW MADRID SEISMIC ZONE
Prehistoric earthquakes similar in size to those of 1811-1812 Earthquakes in this region also have occurred in the middle 1400's and around 900 A.D. Strong, damaging earthquakes struck the southwestern end of the seismic zone near Marked Tree, Arkansas in 1843 (magnitude 6.3), and the northeastern end near Charleston, Missouri in 1895 (magnitude 6.6). Since 1900, moderately damaging earthquakes have struck the seismic zone every few decades. About twice a year people feel still smaller earthquakes that do not cause damage.
Earthquakes in the central and eastern U.S. are typically felt over a much broader region than in the western U.S. East of the Rockies, an earthquake can be felt over an area as much as ten times larger than a similar magnitude earthquake on the west coast. A magnitude 4.0 eastern U.S. earthquake typically can be felt at many places as far as 100 km (60 mi) from where it occurred, and it infrequently causes damage near its source. A magnitude 5.5 eastern U.S. earthquake usually can be felt as far as 500 km (300 mi) from where it occurred, and sometimes causes damage as far away as 40 km (25 mi).
FAULTS
Earthquakes everywhere occur on faults within bedrock, usually miles deep. The earthquakes of the New Madrid seismic zone occur within a large network of faults called the Reelfoot rift. The rift formed about 500 million years ago, when this region was stretched in the northwest-southeast direction. Along a northeast-southwest zone at least 70 km (40 mi) wide and 500 km (300 mi) long, the rocks in the rift were slowly dropped down about 1-2 km (1 mi) along some of the faults. Now the region is undergoing east- west shortening, and the ancient faults of the Reelfoot rift are being reactivated to generate earthquakes. Today the Reelfoot rift and the New Madrid seismic zone are 2,000 km (1,200 mi) from the nearest plate boundary, which is in the Caribbean Sea.
The network of faults in the seismic zone is buried beneath hundreds to thousands of feet of sand and mud. Four of the largest faults are recognized as alignments of abundant small earthquakes, and movements along two of these faults dammed rivers and created lakes during the earthquakes of 1811-1812. A few more deeply buried faults were detected during oil and gas exploration, and a few small faults are known from geologic mapping. However, many earthquakes occur away from the few known faults, so there must be additional, unknown faults that can generate earthquakes in the seismic zone. Accordingly, the best overall guide to seismic hazard in the New Madrid seismic zone is the earthquakes themselves.
source:
Recent earthquake reminder that New Madrid Fault still active:
In the New Madrid region, February 2013 had twenty five recorded earthquakes, with one of those registering at 3.6 in magnitude.
The most active days of the month were on February 9th, 11th, 23rd and the 24th with three earthquakes occurring on each of those days. The earthquakes on the 9th registered between 1.4 and 1.8 in magnitude, the 11th between 1.5 and 2.2, the 23rd between 1.4 and 3.6, and the 24th between 1.3 and 2.0.
The strongest earthquake of the month was a 3.6 magnitude that struck 7km (4 miles) SSW of Trumann, Arkansas on February 23rd.
M 3.9 - ARKANSAS - 2013-02-23 22:28:38 UTC
Magnitude / mb 3.9Region / ARKANSAS
Date time / 2013-02-23 22:28:38.0 UTC
Location / 35.62 N ; 90.54 W
Depth / 5 km
Distances / 653 km NE Dallas (pop 1,211,704 ; local time 16:28:38.0 2013-02-23)
74 km NW Memphis (pop 641,608 ; local time 16:28:38.0 2013-02-23)
26 km SE Jonesboro (pop 58,619 ; local time 16:28:38.0 2013-02-23)
6 km SW Trumann (pop 6,859 ; local time 16:28:38.0 2013-02-23)
/
Source parameters provided by another agency
USGS/NEIC Denver, USA
There are 123 earthquakes on this map.
February 2013 EQ's in New Madrid Region (25)
MAG DATE LOCAL-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km
1.3 2013/02/24 21:50:11 36.479N 89.544W 8.9 12 km ( 7 mi) S of New Madrid, MO
2.0 2013/02/24 09:38:56 35.625N 90.553W 12.0 7 km ( 4 mi) SW of Trumann, AR
1.7 2013/02/24 00:15:30 36.451N 89.608W 11.9 9 km ( 5 mi) ENE of Portageville, MO
2.5 2013/02/23 23:52:40 35.626N 90.553W 12.4 7 km ( 4 mi) SW of Trumann, AR
3.6 2013/02/23 16:28:38 35.626N 90.558W 14.1 7 km ( 4 mi) SW of Trumann, AR
1.4 2013/02/23 02:17:22 36.274N 89.474W 5.9 2 km ( 1 mi) NE of Ridgely, TN
1.5 2013/02/21 23:26:41 36.834N 89.439W 6.5 8 km ( 5 mi) NW of East Prairie, MO
2.6 2013/02/20 17:28:22 35.833N 90.145W 16.3 6 km ( 4 mi) SSE of Manila, AR
1.2 2013/02/20 07:01:57 36.275N 89.471W 6.1 2 km ( 1 mi) NE of Ridgely, TN
0.8 2013/02/18 21:24:05 36.482N 89.541W 7.6 12 km ( 7 mi) S of New Madrid, MO
1.7 2013/02/17 04:16:58 36.490N 89.567W 9.4 11 km ( 7 mi) SSW of New Madrid, MO
1.5 2013/02/17 02:46:22 36.317N 89.546W 10.2 8 km ( 5 mi) NW of Ridgely, TN
1.0 2013/02/16 16:23:09 36.274N 89.472W 5.6 2 km ( 1 mi) NE of Ridgely, TN
1.3 2013/02/16 16:19:42 36.275N 89.475W 5.8 2 km ( 1 mi) NE of Ridgely, TN
1.5 2013/02/11 14:37:27 36.253N 89.469W 6.6 2 km ( 1 mi) SE of Ridgely, TN
1.6 2013/02/11 13:23:19 36.422N 89.525W 8.4 7 km ( 4 mi) NW of Tiptonville, TN
2.2 2013/02/11 01:14:54 36.284N 89.466W 6.1 3 km ( 2 mi) NE of Ridgely, TN
1.4 2013/02/09 22:07:45 36.476N 89.517W 6.3 12 km ( 7 mi) NNW of Tiptonville, TN
1.8 2013/02/09 19:05:07 35.903N 89.987W 4.4 6 km ( 4 mi) SSW of Gosnell, AR
1.6 2013/02/09 17:15:13 36.374N 89.541W 9.2 6 km ( 4 mi) W of Tiptonville, TN
1.5 2013/02/07 13:26:33 36.371N 89.546W 9.8 7 km ( 4 mi) W of Tiptonville, TN
1.3 2013/02/06 15:53:02 36.532N 89.566W 7.6 7 km ( 4 mi) SSW of New Madrid, MO
0.9 2013/02/05 05:40:06 36.266N 89.486W 7.5 0 km ( 0 mi) NNE of Ridgely, TN
1.6 2013/02/04 14:24:31 36.535N 89.619W 7.6 10 km ( 6 mi) SW of New Madrid, MO
1.4 2013/02/02 02:30:09 36.391N 89.490W 4.6 2 km ( 1 mi) NW of Tiptonville, TN
The Numbers:
MONTH / DAYS / EQ / EQPDFEB 2013 / 28 / 25 / 0.89
JAN 2013 / 31 / 14 / 0.45
2013 Total / 59 / 39 / 0.66
DEC 2012 / 31 / 24 / 0.77
NOV 2012 / 30 / 20 / 0.66
OCT 2012 / 31 / 18 / 0.58
SEP 2012 / 30 / 22 / 0.73
AUG 2012 / 31 / 18 / 0.58
JUL 2012 / 31 / 21 / 0.67
JUN 2012 / 30 / 31 / 1.03
MAY 2012 / 31 / 15 / 0.48
APR 2012 / 30 / 15 / 0.5
MAR 2012 / 31 / 11 / 0.35
FEB 2012 / 29 / 11 / 0.37
JAN 2012 / 31 / 18 / 0.58
2012 Total / 366 / 224 / 0.61
2013 Total / 59 / 39 / 0.66
2012 Total / 366 / 224 / 0.61
TOTAL / 425 / 263 / 0.61
I have seen three earthquakes this month initially reported as being 8.0, 4.0 and 3.9 in magnitude, being downgraded to 7.9, 3.5 and 3.6 by seismologists. I notice that larger earthquakes are usually downgraded, while the smaller ones usually aren't. Why is that ? Here we are in the year 2013, and with the incredible advancement in science and technology you mean to tell me that seismographs are incapable of recording an accurate measurement on the strength of an earthquake and that they have to be reviewed and downgraded by seismologists ? Are these things not properly calibrated ? A 4.0 being downgraded to a 3.5 is totally outrageous, unacceptable, and shows that something or someone is way off and at fault here (pun intended) !
I invite any seismologists or USGS employee to respond and logically explain to us all what is going on here.
I hope these people can get their act together and start looking less like Barnum and Bailey, otherwise the integrity of their information will lose validity.
This concludes the report for Earthquakes-Monthly February 2013.
I hope that you found this report to be interesting and look for the next Earthquakes Monthly-March 2013 coming in early April.
Be sure to check out all the interesting links and resources that Real Weather has to offer.
Thanks for the visit.
nvizabillat