Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 18-07-2020 and time 19:36:41 (Italy) in region 3 km SE Amatrice (RI)

A magnitude ML 1.2 earthquake occured in region: 3 km SE Amatrice (RI), on

  • 18-07-2020 17:36:41 (UTC)
  • 18-07-2020 19:36:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6100, 13.3110 at 12 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

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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 3 2657 2657
Campotosto AQ 8 542 3199
Capitignano AQ 10 665 3864
Accumoli RI 11 667 4531
Montereale AQ 11 2581 7112
Cittareale RI 12 482 7594
Crognaleto TE 15 1297 8891
Cortino TE 16 656 9547
Barete AQ 18 737 10284
Cagnano Amiterno AQ 18 1369 11653
Borbona RI 18 617 12270
Arquata del Tronto AP 18 1178 13448
Pizzoli AQ 19 4326 17774
Acquasanta Terme AP 20 2916 20690
Fano Adriano TE 20 296 20986
Rocca Santa Maria TE 20 537 21523
Posta RI 20 694 22217

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km N of L'Aquila (69753 inhabitants)
33 Km W of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
76 Km W of Pescara (121014 inhabitants)
76 Km W of Chieti (51815 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
83 Km NE of Tivoli (56533 inhabitants)
93 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
Reviewed
Rev100 		ML 1.2 2020-07-18
17:36:41		 42.6098 13.3112 12 2020-07-18
17:43:25		 Sala Sismica INGV-Roma 81139471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-18 17:36:41 ± 0.07
Latitude 42.6098 ± 0.0036
Longitude 13.3112 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81139471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 436
Semi-minor axis of confidence ellipse (meter) 178
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 88
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.48833
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 81139471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-18 17:43:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
TV.SF04.EHZ. 2020-07-18T17:37:05.29 3.0 undecidable manual P 0.61 0
IV.CSP1.EHZ. 2020-07-18T17:36:58.96 0.3 undecidable manual S 351 54.2013 91 0.4 64
IV.FDMO.HHZ. 2020-07-18T17:36:57.79 0.3 undecidable manual S 339 50.7159 91 0.14 69
IV.MF5.EHZ. 2020-07-18T17:36:56.76 0.3 undecidable manual S 16 43.623 91 1 51
IV.GAVE.EHZ. 2020-07-18T17:36:53.35 0.3 undecidable manual S 285 35.2425 92 -0.16 70
IV.MC2.EHZ. 2020-07-18T17:36:53.50 0.3 undecidable manual S 343 34.9428 92 0.07 72
IV.MMO1.EHZ. 2020-07-18T17:36:52.53 0.3 undecidable manual S 2 32.1456 92 -0.16 72
IV.FDMO.HHZ. 2020-07-18T17:36:51.02 0.1 undecidable manual P 339 50.7159 91 0.13 92
IV.CSP1.EHZ. 2020-07-18T17:36:51.60 0.1 undecidable manual P 351 54.2013 91 0.18 90
IV.NRCA.HHZ. 2020-07-18T17:36:51.57 0.3 undecidable manual S 327 29.5482 92 -0.43 67
IV.MF5.EHZ. 2020-07-18T17:36:50.24 0.3 undecidable manual P 16 43.623 91 0.44 65
IV.TERO.HHZ. 2020-07-18T17:36:50.10 0.3 undecidable manual S 86 23.9538 93 -0.4 70
IV.LNSS.HNN. 2020-07-18T17:36:49.91 0.3 undecidable manual S 268 22.1556 94 -0.11 72
IV.MTRA.EHZ. 2020-07-18T17:36:48.35 0.1 undecidable manual S 23 17.6712 97 -0.5 92
IV.GAVE.EHZ. 2020-07-18T17:36:48.40 0.3 undecidable manual P 285 35.2425 92 -0.1 71
IV.MC2.EHZ. 2020-07-18T17:36:48.41 0.3 undecidable manual P 343 34.9428 92 -0.04 73
IV.RM33.EHZ. 2020-07-18T17:36:47.86 0.3 undecidable manual S 215 13.6752 108 0.06 75
IV.GIGS.HHE. 2020-07-18T17:36:47.19 0.3 undecidable manual P 129 27.5502 92 -0.13 72
IV.NRCA.HHZ. 2020-07-18T17:36:47.45 0.1 undecidable manual P 327 29.5482 92 -0.18 95
IV.CAMP.HHE. 2020-07-18T17:36:47.23 0.3 undecidable manual S 136 11.4774 117 -0.02 76
IV.MMO1.EHZ. 2020-07-18T17:36:47.92 0.1 undecidable manual P 2 32.1456 92 -0.1 96
IV.LNSS.HNN. 2020-07-18T17:36:46.57 0.3 undecidable manual P 268 22.1556 94 0.09 74
IV.TERO.HHZ. 2020-07-18T17:36:46.77 0.1 undecidable manual P 86 23.9538 93 0.01 98
IV.T1299.HNE. 2020-07-18T17:36:45.68 0.1 undecidable manual S 319 3.5964 158 -0.16 99
IV.RM33.EHZ. 2020-07-18T17:36:45.38 0.1 undecidable manual P 215 13.6752 108 0.18 98
IV.MTRA.EHZ. 2020-07-18T17:36:45.65 0.1 undecidable manual P 23 17.6712 97 -0.16 98
IV.CAMP.HHE. 2020-07-18T17:36:45.06 0.1 undecidable manual P 136 11.4774 117 0.17 98
IV.SMA1.EHZ. 2020-07-18T17:36:45.54 0.1 undecidable manual S 41 2.997 161 -0.25 98
IV.SMA1.EHZ. 2020-07-18T17:36:44.21 0.1 undecidable manual P 41 2.997 161 0.17 99
IV.T1299.HNE. 2020-07-18T17:36:44.21 0.1 undecidable manual P 319 3.5964 158 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.3 0.00028729110000000005 0.128 AML other m 2020-07-18T17:36:45.80
IV.SMA1.EHN. ML:1.4 0.0003492484 0.0896 AML other m 2020-07-18T17:36:45.80
IV.RM33.HNE. ML:1.3 0.00019508240000000001 0.192 AML other m 2020-07-18T17:36:48.40
IV.RM33.HNN. ML:1.2 0.000154635255 1.472 AML other m 2020-07-18T17:36:47.96
IV.RM33.EHE. ML:1.3 0.00018764285 0.1664 AML other m 2020-07-18T17:36:48.31
IV.RM33.EHN. ML:1.0 0.00010363845500000001 0.1536 AML other m 2020-07-18T17:36:48.12
IV.MTRA.HNE. ML:1.2 0.00012921515 0.3968 AML other m 2020-07-18T17:36:48.36
IV.MTRA.HNN. ML:1.2 0.00012565305 0.0768 AML other m 2020-07-18T17:36:48.40
IV.MTRA.EHE. ML:1.0 0.00007604999500000001 0.0896 AML other m 2020-07-18T17:36:48.46
IV.MTRA.EHN. ML:1.2 0.0001367218 0.0768 AML other m 2020-07-18T17:36:48.41
IV.TERO.HHE. ML:1.1 0.000071943455 0.1408 AML other m 2020-07-18T17:36:50.16
IV.TERO.HHN. ML:1.2 0.000099859925 0.1152 AML other m 2020-07-18T17:36:50.17
IV.NRCA.HNE. ML:1.4 0.000110825745 0.6272 AML other m 2020-07-18T17:36:59.07
IV.NRCA.HNN. ML:1.6 0.00017826945 0.6272 AML other m 2020-07-18T17:36:49.52
IV.NRCA.HHE. ML:1.2 0.00006974166000000001 0.064 AML other m 2020-07-18T17:36:51.88
IV.NRCA.HHN. ML:1.2 0.00008216087999999999 0.1408 AML other m 2020-07-18T17:36:51.83
IV.GAVE.HNE. ML:1.4 0.000106838345 0.512 AML other m 2020-07-18T17:36:56.45
IV.GAVE.HNN. ML:1.6 0.00016208535000000003 1.1008 AML other m 2020-07-18T17:37:03.67
IV.GAVE.EHE. ML:1.2 0.000062815305 0.1152 AML other m 2020-07-18T17:36:53.78
IV.GAVE.EHN. ML:1.1 0.00005064949 0.1152 AML other m 2020-07-18T17:36:53.98
IV.MF5.EHE. ML:1.1 0.0000402485 0.896 AML other m 2020-07-18T17:37:10.78
IV.MF5.EHN. ML:1.2 0.0000574768174 1.4592 AML other m 2020-07-18T17:36:56.07
IV.CSP1.EHE. ML:0.9 0.0000199091 1.408 AML other m 2020-07-18T17:37:12.04
IV.CSP1.EHN. ML:1.0 0.000024611160000000003 1.024 AML other m 2020-07-18T17:37:11.43
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