Earthquake with magnitude of ML 1.4 on date 18-02-2013 and time 12:33:05 (Italy) in region 4 km E Amatrice (RI)

A magnitude ML 1.4 earthquake occured in region: 4 km E Amatrice (RI), on

  • 18-02-2013 11:33:05 (UTC)
  • 18-02-2013 12:33:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6320, 13.3380 at 20 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 4 2657 2657
Campotosto AQ 9 542 3199
Accumoli RI 10 667 3866
Capitignano AQ 13 665 4531
Cortino TE 14 656 5187
Montereale AQ 14 2581 7768
Cittareale RI 15 482 8250
Crognaleto TE 15 1297 9547
Arquata del Tronto AP 16 1178 10725
Acquasanta Terme AP 17 2916 13641
Rocca Santa Maria TE 17 537 14178
Valle Castellana TE 18 977 15155
Fano Adriano TE 19 296 15451

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km W of Teramo (54892 inhabitants)
32 Km N of L'Aquila (69753 inhabitants)
57 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
68 Km W of Montesilvano (53738 inhabitants)
74 Km W of Pescara (121014 inhabitants)
75 Km W of Chieti (51815 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km NE of Tivoli (56533 inhabitants)
94 Km SE of Perugia (166134 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 1.4 2013-02-18
11:33:05
42.632 13.3378 20 2015-01-20
11:22:42
Bollettino Sismico Italiano INGV 3147821
Reviewed
Rev100
ML 1.3 2013-02-18
11:33:05
42.6437 13.3352 18 2014-10-21
12:08:56
Sala Sismica INGV-Roma 2973721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-02-18 11:33:05 ± 0.13
Latitude 42.6320 ± 0.0072
Longitude 13.3378 ± 0.0049
Depth (km) 20 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 3147821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 651
Semi-minor axis of confidence ellipse (meter) 448
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 11
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00270
Epicentral distance of station farthest from the epicenter (degree) 0.44426
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 2973721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-02-18 11:41:53

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 3147821
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:24:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2013-02-18T11:33:21.19 0.3 undecidable manual S 336 49.3173 103 0.21 65
IV.NRCA.HHZ. 2013-02-18T11:33:15.55 0.1 undecidable manual S 321 28.8489 116 -0.26 91
IV.TERO.HHZ. 2013-02-18T11:33:14.21 0.1 undecidable manual S 93 21.7671 124 0.04 97
IV.FDMO.HHZ. 2013-02-18T11:33:14.09 0.6 undecidable manual P 336 49.3173 103 -0.18 45
IV.LNSS.HHZ. 2013-02-18T11:33:14.89 0.1 undecidable manual S 263 24.4533 121 0.1 94
IV.SMA1.EHZ. 2013-02-18T11:33:11.35 0.1 undecidable manual S 231 0.2997 179 0.09 100
IV.NRCA.HHZ. 2013-02-18T11:33:11.13 0.1 undecidable manual P 321 28.8489 116 -0.16 94
IV.TERO.HHZ. 2013-02-18T11:33:10.35 0.1 undecidable manual P 93 21.7671 124 0.02 96
IV.LNSS.HHZ. 2013-02-18T11:33:10.62 0.1 undecidable manual P 263 24.4533 121 -0.07 96
IV.SMA1.EHZ. 2013-02-18T11:33:08.75 0.1 undecidable manual P 231 0.2997 179 0.09 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1.3 0.0001041 0.26 AML other m 2013-02-18T11:33:15.14
IV.LNSS.HHE. ML:1.2 0.00007605 0.98 AML other m 2013-02-18T11:33:15.94
IV.NRCA.HHE. ML:1.9 0.0003165 0.2 AML other m 2013-02-18T11:33:15.78
IV.NRCA.HHN. ML:1.6 0.000176 1.34 AML other m 2013-02-18T11:33:16.39
IV.SMA1.EHE. ML:1.3 0.0001595 0.5 AML other m 2013-02-18T11:33:11.70
IV.SMA1.EHN. ML:1.2 0.0001255 1.24 AML other m 2013-02-18T11:33:11.54
IV.TERO.HHE. ML:1.4 0.000129 0.12 AML other m 2013-02-18T11:33:14.40
IV.TERO.HHN. ML:1.2 0.00009245000000000001 0.08 AML other m 2013-02-18T11:33:14.50
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download