Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 25-09-2016 and time 03:24:53 (Italy) in region 1 km SE Amatrice (RI)

A magnitude ML 1.1 earthquake occured in region: 1 km SE Amatrice (RI), on

  • 25-09-2016 01:24:53 (UTC)
  • 25-09-2016 03:24:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6220, 13.3000 at 11 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 1 2657 2657
Campotosto AQ 9 542 3199
Accumoli RI 9 667 3866
Capitignano AQ 11 665 4531
Cittareale RI 11 482 5013
Montereale AQ 12 2581 7594
Arquata del Tronto AP 17 1178 8772
Crognaleto TE 17 1297 10069
Cortino TE 17 656 10725
Borbona RI 18 617 11342
Acquasanta Terme AP 19 2916 14258
Cagnano Amiterno AQ 19 1369 15627
Barete AQ 19 737 16364
Posta RI 20 694 17058

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km N of L'Aquila (69753 inhabitants)
33 Km W of Teramo (54892 inhabitants)
54 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
77 Km W of Pescara (121014 inhabitants)
77 Km W of Chieti (51815 inhabitants)
84 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km NE of Tivoli (56533 inhabitants)
92 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 1.1 2016-09-25
01:24:53		 42.6223 13.2998 11 2016-09-25
01:33:18		 Sala Sismica INGV-Roma 29499831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-09-25 01:24:53 ± 0.03
Latitude 42.6223 ± 0.0018
Longitude 13.2998 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 29499831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 269
Semi-minor axis of confidence ellipse (meter) 210
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 55
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.02698
Epicentral distance of station farthest from the epicenter (degree) 0.72126
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 29499831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-09-25 01:33:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2016-09-25T01:25:07.81 0.1 undecidable manual P 348 80.0643 50 0.16 84
IV.MMO1.EHZ. 2016-09-25T01:25:04.73 0.1 undecidable manual S 4 30.8469 50 0.1 93
IV.GUMA.HHZ. 2016-09-25T01:25:03.18 0.1 undecidable manual P 3 48.9177 50 0.33 86
IV.T1241.HHZ. 2016-09-25T01:25:03.86 0.6 undecidable manual S 22 28.0497 50 -0.04 48
IV.VCEL.EHZ. 2016-09-25T01:25:03.25 0.1 undecidable manual P 120 50.9157 50 0.09 90
IV.NRCA.HHZ. 2016-09-25T01:25:03.53 0.6 undecidable manual S 327 27.8499 50 -0.32 45
IV.CSP1.EHZ. 2016-09-25T01:25:03.43 0.1 undecidable manual P 352 52.7028 50 0 92
IV.FAGN.HHZ. 2016-09-25T01:25:02.86 0.1 undecidable manual P 149 45.9207 50 0.48 84
IV.FDMO.HHZ. 2016-09-25T01:25:02.87 0.1 undecidable manual P 339 49.1175 50 -0.01 92
IV.T1216.EHZ. 2016-09-25T01:25:01.02 0.1 undecidable manual P 323 37.5291 50 -0.08 93
IV.T1247.HHZ. 2016-09-25T01:25:01.59 0.3 undecidable manual S 180 20.0688 118 -0.09 72
IV.LNSS.HHZ. 2016-09-25T01:25:01.99 0.3 undecidable manual S 264 21.2676 116 -0.08 72
IV.T1215.EHZ. 2016-09-25T01:25:01.43 0.1 undecidable manual P 300 40.4262 50 -0.11 92
IV.MC2.EHZ. 2016-09-25T01:25:00.43 0.1 undecidable manual P 344 33.3444 50 -0.02 95
IV.MMO1.EHZ. 2016-09-25T01:25:00.08 0.1 undecidable manual P 4 30.8469 50 0.02 95
IV.GIGS.HHZ. 2016-09-25T01:24:59.67 0.1 undecidable manual P 130 29.1486 50 -0.13 93
IV.RM33.EHZ. 2016-09-25T01:24:59.91 0.3 undecidable manual S 209 14.3745 126 -0.1 72
IV.TERO.HHZ. 2016-09-25T01:24:59.03 0.1 undecidable manual P 90 24.8529 50 -0.11 94
IV.T1202.EHZ. 2016-09-25T01:24:59.49 0.1 undecidable manual S 326 10.878 134 0.41 91
IV.T1241.HHZ. 2016-09-25T01:24:59.43 0.1 undecidable manual P 22 28.0497 50 -0.21 92
IV.CAMP.HHZ. 2016-09-25T01:24:59.55 0.1 undecidable manual S 137 13.0758 129 -0.11 96
IV.NRCA.HHZ. 2016-09-25T01:24:59.57 0.1 negative manual P 327 27.8499 50 -0.04 95
IV.T1243.HHZ. 2016-09-25T01:24:59.81 0.3 undecidable manual S 56 14.6742 126 -0.28 70
IV.T1217.EHZ. 2016-09-25T01:24:59.98 0.1 undecidable manual P 288 31.6461 50 -0.21 91
IV.LNSS.HHZ. 2016-09-25T01:24:58.48 0.1 undecidable manual P 264 21.2676 116 -0.1 95
IV.T1247.HHZ. 2016-09-25T01:24:58.38 0.1 undecidable manual P 180 20.0688 118 0.02 97
IV.T1242.HHZ. 2016-09-25T01:24:58.99 0.1 undecidable manual P 341 24.2535 50 -0.06 95
IV.CAMP.HHZ. 2016-09-25T01:24:57.27 0.1 undecidable manual P 137 13.0758 129 0.08 97
IV.T1204.EHZ. 2016-09-25T01:24:57.79 0.1 undecidable manual S 13 6.0939 150 -0.26 94
IV.T1243.HHZ. 2016-09-25T01:24:57.43 0.1 undecidable manual P 56 14.6742 126 -0.01 98
IV.RM33.EHZ. 2016-09-25T01:24:57.49 0.1 undecidable manual P 209 14.3745 126 0.1 96
IV.SMA1.EHZ. 2016-09-25T01:24:57.63 0.1 undecidable manual S 72 2.997 164 0 100
IV.SMA1.EHZ. 2016-09-25T01:24:56.16 0.1 undecidable manual P 72 2.997 164 0.14 97
IV.T1204.EHZ. 2016-09-25T01:24:56.38 0.1 undecidable manual P 13 6.0939 150 0.12 97
IV.T1202.EHZ. 2016-09-25T01:24:56.92 0.1 undecidable manual P 326 10.878 134 0.06 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHE. ML:0.3 0.000050549999999999995 1.08 AML other m 2016-09-25T01:25:00.10
IV.CAMP.HHN. ML:0.4 0.00007384999999999999 1.18 AML other m 2016-09-25T01:25:01.45
IV.FAGN.HHE. ML:1.0 0.0000441 0.38 AML other m 2016-09-25T01:25:11.44
IV.FAGN.HHN. ML:1.0 0.0000452 1.44 AML other m 2016-09-25T01:25:13.63
IV.GUMA.HHE. ML:1.4 0.00010350000000000001 0.4 AML other m 2016-09-25T01:25:13.05
IV.GUMA.HHN. ML:1.4 0.00010725 0.42 AML other m 2016-09-25T01:25:12.34
IV.LNSS.HHE. ML:0.9 0.000123 0.52 AML other m 2016-09-25T01:25:02.43
IV.LNSS.HHN. ML:0.9 0.00010955 1.1 AML other m 2016-09-25T01:25:02.17
IV.NRCA.HHE. ML:1.8 0.000638 0.38 AML other m 2016-09-25T01:25:03.68
IV.NRCA.HHN. ML:1.8 0.000611 1.02 AML other m 2016-09-25T01:25:03.68
IV.RM33.EHE. ML:1.1 0.00028799999999999995 0.28 AML other m 2016-09-25T01:25:00.24
IV.RM33.EHN. ML:0.9 0.00020950000000000002 0.36 AML other m 2016-09-25T01:25:00.21
IV.SMA1.EHN. ML:1.5 0.0017349999999999998 0.32 AML other m 2016-09-25T01:24:57.97
IV.SMA1.EHE. ML:1.6 0.002025 0.14 AML other m 2016-09-25T01:24:58.05
IV.T1242.HHE. ML:0.8 0.00008165 0.58 AML other m 2016-09-25T01:25:12.68
IV.T1242.HHN. ML:1.1 0.0001585 0.26 AML other m 2016-09-25T01:25:12.85
IV.T1247.HHN. ML:1.3 0.00030649999999999997 0.2 AML other m 2016-09-25T01:25:01.77
IV.T1247.HHE. ML:1.1 0.000208 0.16 AML other m 2016-09-25T01:25:02.68
IV.TERO.HHE. ML:0.8 0.00008145 0.48 AML other m 2016-09-25T01:25:02.81
IV.TERO.HHN. ML:1.0 0.0001204 0.26 AML other m 2016-09-25T01:25:03.28
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