Earthquake with magnitude of ML 0.4 on date 04-06-2011 and time 20:20:58 (Italy) in region 6 km SW Amatrice (RI)

A magnitude ML 0.4 earthquake occured in region: 6 km SW Amatrice (RI), on

  • 04-06-2011 18:20:58 (UTC)
  • 04-06-2011 20:20:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.58, 13.24 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Amatrice RI 6 2657 2657
Montereale AQ 7 2581 5238
Cittareale RI 8 482 5720
Capitignano AQ 8 665 6385
Campotosto AQ 11 542 6927
Borbona RI 12 617 7544
Accumoli RI 12 667 8211
Posta RI 14 694 8905
Cagnano Amiterno AQ 14 1369 10274
Barete AQ 15 737 11011
Pizzoli AQ 17 4326 15337
Crognaleto TE 20 1297 16634

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of L'Aquila (69753 inhabitants)
39 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
78 Km NE of Guidonia Montecelio (88673 inhabitants)
78 Km NE of Tivoli (56533 inhabitants)
80 Km W of Chieti (51815 inhabitants)
81 Km W of Pescara (121014 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
99 Km NE of Roma (2864731 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 Md 1.6
ML 0.4
2011-06-04
18:20:58
42.58 13.24 11 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1229189
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-06-04 18:20:58 ± 0.14
Latitude 42.58 ± 0.01
Longitude 13.24 ± 0.01
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1229189

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1632
Semi-minor axis of confidence ellipse (meter) 1105
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 1
Circular confidence region, given by single value of horizontal uncertainty (meter) 1802.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2671
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0
Num. used stations
Type of magnitude ML
Reference to an origin 1229189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 00:08:21

Md:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1229189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 00:08:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NRCA.HHN. 2011-06-04T18:21:08.52 0.1 undecidable manual Sg 339 0.2671 -0.299 87
IV.CAMP.HHZ. 2011-06-04T18:21:04.66 0.1 undecidable manual Sg 112 0.1304 -0.106 94
IV.NRCA.HHN. 2011-06-04T18:21:04.12 0.1 undecidable manual Pg 339 0.2671 -0.32 87
IV.RM33.EHZ. 2011-06-04T18:21:03.07 0.1 undecidable manual Sg 196 0.0782 -0.254 94
IV.CAMP.HHZ. 2011-06-04T18:21:02.25 0.1 undecidable manual Pg 112 0.1304 0.157 97
IV.RM32.EHZ. 2011-06-04T18:21:02.65 0.1 undecidable manual Sg 116 0.0369 0.098 100
IV.BADI.EHN. 2011-06-04T18:21:02.28 10.0 undecidable manual Pg 0 0 0
IV.RM29.EHN. 2011-06-04T18:21:02.64 0.1 undecidable manual Sg 230 0.0351 0.122 99
IV.RM29.EHN. 2011-06-04T18:21:01.02 0.1 undecidable manual Pg 230 0.0351 0.226 97
IV.RM32.EHZ. 2011-06-04T18:21:01.09 0.1 undecidable manual Pg 116 0.0369 0.278 97
IV.RM33.EHZ. 2011-06-04T18:21:01.39 0.1 undecidable manual Pg 196 0.0782 0.129 98
IV.VMG.SHZ. 2011-06-04T18:20:59.23 10.0 undecidable manual Sg 0 0 0
IV.CPGN.EHE. 2011-06-04T18:20:59.50 10.0 undecidable manual Pg 0 0 0
IV.SFI.EHZ. 2011-06-04T18:20:57.98 10.0 undecidable manual Sg 0 0 0
IV.SFI.EHZ. 2011-06-04T18:20:55.93 10.0 undecidable manual Pg 0 0 0
IV.VMG.SHZ. 2011-06-04T18:20:53.18 10.0 undecidable manual Pg 0 0 0
IV.PARC.HHE. 2011-06-04T18:20:53.74 10.0 undecidable manual Pg 0 0 0
IV.T0502.EHN. 2011-06-04T18:20:46.45 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHZ. 2011-06-04T18:20:45.40 10.0 undecidable manual Pg 0 0 0
IV.PTCC.HHZ. 2011-06-04T18:20:30.79 10.0 undecidable manual Pg 0 0 0
IV.CRMI.HHE. 2011-06-04T18:20:06.01 10.0 undecidable manual Pg 0 0 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PTCC.HHN. ML:0 4.0E-5 4.86 AML other m 2011-06-04T18:20:30.79
IV.PTCC.HHE. ML:0 3.5E-5 9.24 AML other m 2011-06-04T18:20:30.79
IV.VMG.SHZ. Md:0 26.1 END duration s
IV.PARC.HHE. Md:0 20 END duration s
IV.RM29.EHN. Md:1.7 19.1 END duration s
IV.RM29.EHE. ML:0 0.00071 0.18 AML other m 2011-06-04T18:21:01.02
IV.RM32.EHN. ML:0 9.5E-5 0.22 AML other m 2011-06-04T18:21:01.09
IV.RM32.EHE. ML:0 9.0E-5 0.36 AML other m 2011-06-04T18:21:01.09
IV.RM33.EHN. ML:0 0.000275 0.08 AML other m 2011-06-04T18:21:01.39
IV.RM33.EHE. ML:0 0.000295 0.16 AML other m 2011-06-04T18:21:01.39
IV.CAMP.HHN. ML:0.4 2.5E-5 0.54 AML other m 2011-06-04T18:21:02.25
IV.CAMP.HHE. ML:0.4 2.5E-5 0.46 AML other m 2011-06-04T18:21:02.25
IV.PTCC.HHZ. Md:0 24 END duration s
IV.STR3.BHZ. Md:0 20 END duration s
IV.T0502.EHN. Md:0 26 END duration s
IV.SFI.EHZ. Md:0 7 END duration s
IV.CPGN.EHE. Md:0 14 END duration s
IV.RM32.EHZ. Md:1.7 18 END duration s
IV.RM33.EHZ. Md:1.4 13 END duration s
IV.CAMP.HHZ. Md:1.4 12.3 END duration s
IV.BADI.EHN. Md:0 14 END duration s
IV.NRCA.HHN. Md:1.8 20.2 END duration s
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download