Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 23-12-2017 and time 12:11:10 (Italy) in region 5 km W Posta (RI)

A magnitude ML 2.3 earthquake occured in region: 5 km W Posta (RI), on

  • 23-12-2017 11:11:10 (UTC)
  • 23-12-2017 12:11:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5180, 13.0370 at 9 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Posta RI 5 694 694
Micigliano RI 8 127 821
Leonessa RI 8 2435 3256
Borbona RI 8 617 3873
Antrodoco RI 12 2588 6461
Cantalice RI 12 2755 9216
Poggio Bustone RI 12 2055 11271
Borgo Velino RI 13 972 12243
Castel Sant'Angelo RI 14 1308 13551
Rivodutri RI 15 1253 14804
Cittareale RI 15 482 15286
Cittaducale RI 16 6828 22114
Monteleone di Spoleto PG 17 599 22713
Cagnano Amiterno AQ 17 1369 24082
Morro Reatino RI 17 373 24455
Montereale AQ 17 2581 27036
Polino TR 18 233 27269
Rieti RI 19 47698 74967
Labro RI 19 374 75341

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Terni (111501 inhabitants)
35 Km NW of L'Aquila (69753 inhabitants)
56 Km SE of Foligno (57155 inhabitants)
57 Km W of Teramo (54892 inhabitants)
63 Km NE of Guidonia Montecelio (88673 inhabitants)
65 Km NE of Tivoli (56533 inhabitants)
77 Km E of Viterbo (67173 inhabitants)
83 Km NE of Roma (2864731 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
95 Km W of Chieti (51815 inhabitants)
95 Km N of Velletri (53303 inhabitants)
97 Km W of Pescara (121014 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 2.3 2017-12-23
11:11:10		 42.5178 13.0373 9 2018-09-04
09:10:44		 Bollettino Sismico Italiano INGV 57372001
Reviewed
Rev100 		ML 2.3 2017-12-23
11:11:10		 42.5143 13.04 9 2017-12-23
11:19:05		 Sala Sismica INGV-Roma 52756081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-12-23 11:11:10 ± 0.08
Latitude 42.5178 ± 0.0045
Longitude 13.0373 ± 0.0049
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 57372001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 519
Semi-minor axis of confidence ellipse (meter) 311
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 178
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.83367
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 50
Type of magnitude ML
Reference to an origin 57372001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-05-30 12:32:15

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 52756081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-12-23 11:19:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HHZ. 2017-12-23T11:11:43.83 3.0 undecidable manual Pn 2.32 0
IV.VIVA.HHZ. 2017-12-23T11:11:37.73 3.0 undecidable manual S -0.28 0
IV.CSP1.EHZ. 2017-12-23T11:11:31.50 0.3 undecidable manual S 12 65.0904 50 0.73 56
IV.MF5.EHZ. 2017-12-23T11:11:31.00 0.3 undecidable manual S 33 62.493 50 0.94 52
IV.FDMO.HHZ. 2017-12-23T11:11:28.80 0.3 undecidable manual S 4 57.6978 50 0.01 69
IV.CESI.HHZ. 2017-12-23T11:11:28.60 0.3 undecidable manual S 349 55.1004 50 0.5 63
IV.MGAB.HHZ. 2017-12-23T11:11:26.05 0.1 undecidable manual P 300 87.246 50 0.49 79
IV.MMO1.EHZ. 2017-12-23T11:11:26.70 0.6 undecidable manual S 29 48.4182 50 0.38 43
IV.MURB.HHZ. 2017-12-23T11:11:26.92 0.3 undecidable manual P 333 92.5407 50 0.53 58
IV.TERO.HHZ. 2017-12-23T11:11:25.70 0.6 undecidable manual S 76 47.7189 50 -0.43 43
IV.T1221.EHZ. 2017-12-23T11:11:24.40 0.3 undecidable manual S 338 41.0256 50 0.05 71
IV.MTRA.EHZ. 2017-12-23T11:11:23.50 0.3 undecidable manual S 48 39.5271 50 -0.44 65
IV.CESX.HHZ. 2017-12-23T11:11:23.40 0.3 undecidable manual S 285 38.1285 50 -0.18 69
IV.NRCA.HHZ. 2017-12-23T11:11:22.50 0.3 undecidable manual S 10 35.5422 50 -0.39 67
IV.ASSB.HHZ. 2017-12-23T11:11:22.03 3.0 negative manual P -0.33 0
IV.MF5.EHZ. 2017-12-23T11:11:22.07 0.1 undecidable manual P 33 62.493 50 0.32 86
IV.T0110.HHZ. 2017-12-23T11:11:22.83 0.1 undecidable manual P 118 68.4759 50 0.15 88
IV.CSP1.EHZ. 2017-12-23T11:11:21.93 0.1 undecidable manual P 12 65.0904 50 -0.23 87
IV.FAGN.HHZ. 2017-12-23T11:11:21.02 0.1 undecidable manual P 122 52.8027 50 0.76 76
IV.SRES.HHZ. 2017-12-23T11:11:20.61 0.1 undecidable manual P 234 53.3022 50 0.28 88
IV.CESI.HHZ. 2017-12-23T11:11:20.43 0.1 positive manual P 349 55.1004 50 -0.19 89
IV.SMA1.EHZ. 2017-12-23T11:11:20.60 0.3 undecidable manual S 63 27.3504 108 0.26 69
IV.FDMO.HHZ. 2017-12-23T11:11:20.71 0.1 undecidable manual P 4 57.6978 50 -0.3 87
IV.TERO.HHZ. 2017-12-23T11:11:19.14 0.1 undecidable manual P 76 47.7189 50 -0.34 88
IV.T1299.EHZ. 2017-12-23T11:11:19.40 0.1 undecidable manual S 57 23.754 110 0.22 94
IV.MC2.EHZ. 2017-12-23T11:11:19.02 0.3 undecidable manual P 16 45.4212 50 -0.09 69
IV.MMO1.EHZ. 2017-12-23T11:11:19.08 0.1 undecidable manual P 29 48.4182 50 -0.51 84
IV.MOMA.HHZ. 2017-12-23T11:11:19.48 0.1 undecidable manual P 310 49.617 50 -0.29 88
IV.ARRO.EHZ. 2017-12-23T11:11:19.10 0.1 undecidable manual S 287 23.2545 110 0.11 96
IV.T1221.EHZ. 2017-12-23T11:11:18.15 0.1 positive manual P 338 41.0256 50 -0.3 89
MN.AQU.HHE. 2017-12-23T11:11:18.11 0.6 undecidable manual P 121 35.1426 50 0.57 42
OB.GAVE.EHZ. 2017-12-23T11:11:18.81 3.0 undecidable manual S -0.13 0
IV.NRCA.HHZ. 2017-12-23T11:11:17.19 0.1 undecidable manual P 10 35.5422 50 -0.41 88
IV.MTRA.EHZ. 2017-12-23T11:11:17.80 0.1 undecidable manual P 48 39.5271 50 -0.41 88
IV.CESX.HHZ. 2017-12-23T11:11:17.77 0.1 undecidable manual P 285 38.1285 50 -0.23 91
IV.FIAM.HNN. 2017-12-23T11:11:16.01 0.3 undecidable manual P 167 28.4493 107 -0.34 68
IV.SMA1.EHZ. 2017-12-23T11:11:16.09 0.1 undecidable manual P 63 27.3504 108 -0.05 97
IV.RM33.EHZ. 2017-12-23T11:11:16.20 0.1 undecidable manual S 94 14.4744 121 -0.05 99
OB.GAVE.EHZ. 2017-12-23T11:11:15.16 3.0 positive manual P -0.13 0
IV.T1299.EHZ. 2017-12-23T11:11:15.44 0.1 negative manual P 57 23.754 110 -0.02 98
IV.T1247.HHZ. 2017-12-23T11:11:15.23 0.3 undecidable manual P 112 22.9548 111 -0.08 73
IV.ARRO.EHZ. 2017-12-23T11:11:15.48 0.1 undecidable manual P 287 23.2545 110 0.12 96
IV.LNSS.HHZ. 2017-12-23T11:11:14.80 0.1 undecidable manual S 1 9.4794 132 -0.03 100
IV.RM33.EHZ. 2017-12-23T11:11:13.73 0.1 positive manual P 94 14.4744 121 -0.04 99
IV.LNSS.HHZ. 2017-12-23T11:11:13.01 0.1 positive manual P 1 9.4794 132 0.06 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:2.8 0.009415 0.3 AML other m 2017-12-23T11:11:15.26
IV.LNSS.HHE. ML:2.8 0.00992 0.22 AML other m 2017-12-23T11:11:15.13
IV.RM33.EHE. ML:2.6 0.0037800000000000004 0.32 AML other m 2017-12-23T11:11:16.56
IV.RM33.HNE. ML:2.6 0.00395 0.3 AML other m 2017-12-23T11:11:16.55
IV.RM33.HNN. ML:2.6 0.003965 0.22 AML other m 2017-12-23T11:11:16.45
IV.RM33.EHN. ML:2.6 0.0040750000000000005 0.22 AML other m 2017-12-23T11:11:16.45
IV.T1299.HNE. ML:2.3 0.00115 0.42 AML other m 2017-12-23T11:11:19.71
IV.T1299.EHE. ML:2.3 0.0011749999999999998 0.42 AML other m 2017-12-23T11:11:19.71
IV.ARRO.EHN. ML:2.3 0.0014199999999999998 1.68 AML other m 2017-12-23T11:11:19.03
OB.GAVE.EHE. ML:2.5 0.0021149999999999997 0.78 AML other m 2017-12-23T11:11:20.52
IV.T1299.EHN. ML:2.1 0.000767 0.6 AML other m 2017-12-23T11:11:20.37
OB.GAVE.EHN. ML:2.6 0.002675 1.52 AML other m 2017-12-23T11:11:20.14
IV.SMA1.EHE. ML:2.3 0.0012050000000000001 0.58 AML other m 2017-12-23T11:11:22.08
IV.ARRO.EHE. ML:2.2 0.001055 0.34 AML other m 2017-12-23T11:11:22.72
IV.T1299.HNN. ML:2.8 0.003945 0.78 AML other m 2017-12-23T11:11:22.88
IV.NRCA.HHE. ML:2.4 0.00108 0.16 AML other m 2017-12-23T11:11:23.51
IV.NRCA.HNE. ML:2.4 0.0010035 0.16 AML other m 2017-12-23T11:11:23.43
IV.NRCA.HHN. ML:2.3 0.0008295 0.96 AML other m 2017-12-23T11:11:24.61
IV.MTRA.EHE. ML:2.1 0.00044050000000000003 0.24 AML other m 2017-12-23T11:11:24.53
IV.NRCA.HNN. ML:2.3 0.000858 0.42 AML other m 2017-12-23T11:11:24.82
IV.SMA1.EHN. ML:2.2 0.000943 0.52 AML other m 2017-12-23T11:11:25.40
IV.MTRA.EHN. ML:2.0 0.0003655 0.36 AML other m 2017-12-23T11:11:26.21
IV.CESX.HHE. ML:2.0 0.000366 0.4 AML other m 2017-12-23T11:11:26.64
IV.CESX.HHN. ML:2.1 0.0004375 0.38 AML other m 2017-12-23T11:11:26.78
IV.TERO.HHE. ML:1.8 0.0001805 1.32 AML other m 2017-12-23T11:11:29.72
IV.TERO.HHN. ML:1.9 0.000199 0.9 AML other m 2017-12-23T11:11:29.17
IV.MOMA.HHN. ML:2.3 0.0005605 1.44 AML other m 2017-12-23T11:11:29.24
IV.MOMA.HNN. ML:2.4 0.0007095000000000001 0.94 AML other m 2017-12-23T11:11:29.24
IV.MOMA.HNE. ML:2.4 0.000735 0.22 AML other m 2017-12-23T11:11:29.44
IV.MOMA.HHE. ML:2.4 0.0007370000000000001 0.22 AML other m 2017-12-23T11:11:29.44
IV.CESI.HHN. ML:2.3 0.000429 0.9 AML other m 2017-12-23T11:11:29.25
IV.FDMO.HHN. ML:2.0 0.0002215 1.56 AML other m 2017-12-23T11:11:29.91
IV.CESI.HHE. ML:2.1 0.000272 1.38 AML other m 2017-12-23T11:11:30.82
IV.FDMO.HHE. ML:2.0 0.000199 0.16 AML other m 2017-12-23T11:11:31.71
IV.FAGN.HHN. ML:2.4 0.000549 0.44 AML other m 2017-12-23T11:11:33.59
IV.FAGN.HHE. ML:2.6 0.0010115 1.48 AML other m 2017-12-23T11:11:34.03
IV.ASSB.HHN. ML:2.2 0.00027749999999999997 0.5 AML other m 2017-12-23T11:11:35.43
IV.T0110.HHE. ML:2.1 0.00021800000000000004 0.46 AML other m 2017-12-23T11:11:35.59
IV.T0110.HHN. ML:2.0 0.0001945 0.42 AML other m 2017-12-23T11:11:37.35
IV.ASSB.HHE. ML:2.0 0.00020500000000000002 0.98 AML other m 2017-12-23T11:11:40.03
IV.VIVA.HHE. ML:2.6 0.0004395 0.9 AML other m 2017-12-23T11:11:40.12
IV.MGAB.HHE. ML:2.3 0.00023449999999999998 0.64 AML other m 2017-12-23T11:11:41.55
IV.MGAB.HNE. ML:2.3 0.000253 0.62 AML other m 2017-12-23T11:11:41.55
IV.MGAB.HNN. ML:2.3 0.000251 0.46 AML other m 2017-12-23T11:11:41.77
IV.MGAB.HHN. ML:2.3 0.00024249999999999999 0.36 AML other m 2017-12-23T11:11:44.22
IV.VIVA.HHN. ML:2.6 0.000479 1.3 AML other m 2017-12-23T11:11:44.65
IV.MURB.HHN. ML:2.6 0.0004385 0.32 AML other m 2017-12-23T11:11:44.96
IV.MURB.HHE. ML:2.5 0.0003885 0.78 AML other m 2017-12-23T11:11:45.50
IV.CSP1.EHN. ML:2.9 0.0013540000000000002 0.42 AML other m 2017-12-23T11:11:49.53
IV.CSP1.EHE. ML:3.1 0.0022799999999999995 0.42 AML other m 2017-12-23T11:11:49.32
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
Waveforms Seismic signals in miniseed + resp format Download