Earthquake with magnitude of ML 1.5 on date 22-10-2019 and time 10:23:23 (Italy) in region 3 km SW Terni (TR)

A magnitude ML 1.5 earthquake occured in region: 3 km SW Terni (TR), on

  • 22-10-2019 08:23:23 (UTC)
  • 22-10-2019 10:23:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.54, 12.63 at 10 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Terni TR 3 111501 111501
Stroncone TR 5 4917 116418
Narni TR 10 19785 136203
San Gemini TR 11 5018 141221
Arrone TR 13 2763 143984
Configni RI 13 633 144617
Colli sul Velino RI 13 533 145150
Montefranco TR 13 1276 146426
Labro RI 14 374 146800
Greccio RI 15 1558 148358
Cottanello RI 15 563 148921
Calvi dell'Umbria TR 16 1856 150777
Ferentillo TR 16 1913 152690
Morro Reatino RI 17 373 153063
Vacone RI 17 256 153319
Montecastrilli TR 17 5022 158341
Montasola RI 17 395 158736
Otricoli TR 18 1869 160605
Amelia TR 18 11897 172502
Contigliano RI 18 3783 176285
Acquasparta TR 18 4778 181063
Polino TR 18 233 181296
Rivodutri RI 19 1253 182549
Montebuono RI 19 883 183432

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km SW of Terni (111501 inhabitants)
45 Km E of Viterbo (67173 inhabitants)
47 Km S of Foligno (57155 inhabitants)
60 Km N of Guidonia Montecelio (88673 inhabitants)
65 Km N of Tivoli (56533 inhabitants)
66 Km SE of Perugia (166134 inhabitants)
66 Km W of L'Aquila (69753 inhabitants)
73 Km N of Roma (2864731 inhabitants)
85 Km NE of Civitavecchia (52991 inhabitants)
89 Km W of Teramo (54892 inhabitants)
91 Km NE of Fiumicino (78395 inhabitants)
95 Km N of Velletri (53303 inhabitants)
97 Km N of Pomezia (62966 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 100 ML 1.5 2019-10-22
08:23:23
42.54 12.63 10 2019-10-22
08:31:14
Sala Sismica INGV-Roma 73386641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-22 08:23:23 ± 0.09
Latitude 42.54 ± 0.00
Longitude 12.63 ± 0.01
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73386641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 740
Semi-minor axis of confidence ellipse (meter) 436
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 60
Circular confidence region, given by single value of horizontal uncertainty (meter) 740
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 173
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.64391
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 73386641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-22 08:31:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.IST3.HHZ. 2019-10-22T08:25:20.95 3.0 undecidable manual Sn 0.73 0
IV.EUCT.HNZ. 2019-10-22T08:25:10.26 3.0 undecidable manual Sn 0.7 0
GU.RORO.HHZ. 2019-10-22T08:25:05.87 3.0 undecidable manual Sn -3.85 0
MN.TRI.HHZ. 2019-10-22T08:25:02.12 3.0 undecidable manual Sg 2.81 0
IV.NDIM.HHZ. 2019-10-22T08:24:50.75 3.0 undecidable manual Sg 5.84 0
IV.MUCR.HHZ. 2019-10-22T08:24:49.23 3.0 positive manual Pg 11.57 0
GU.GRAM.HHZ. 2019-10-22T08:24:42.41 3.0 undecidable manual Sn -3.4 0
IV.TDS.HHZ. 2019-10-22T08:24:39.91 3.0 undecidable manual Pg 13.13 0
IV.CAR1.HHZ. 2019-10-22T08:24:32.38 3.0 negative manual Pn 2.26 0
IV.MNTV.HNZ. 2019-10-22T08:24:14.72 3.0 undecidable manual Pg 1.22 0
MN.VLC.HHZ. 2019-10-22T08:24:06.09 3.0 positive manual Pg 1.2 0
IV.PTRJ.HHZ. 2019-10-22T08:23:59.28 3.0 undecidable manual Pg 2.35 0
IV.PESA.HHZ. 2019-10-22T08:23:51.21 3.0 positive manual P -1.24 0
IV.CSP1.EHZ. 2019-10-22T08:23:49.28 3.0 undecidable manual S -3.12 0
IV.CERT.HHZ. 2019-10-22T08:23:46.08 0.3 undecidable manual S 156 0.6439 50 0.31 63
IV.GIUL.HHZ. 2019-10-22T08:23:42.10 3.0 undecidable manual P -3.96 0
IV.CERT.HHZ. 2019-10-22T08:23:36.41 0.3 undecidable manual P 156 0.6439 50 -0.14 65
IV.LNSS.HHZ. 2019-10-22T08:23:35.74 0.3 undecidable manual S 78 0.3085 50 -0.11 70
IV.MOMA.HHZ. 2019-10-22T08:23:34.49 0.3 undecidable manual S 351 0.2689 50 -0.18 69
IT.GNU.HGE. 2019-10-22T08:23:34.78 0.1 undecidable manual S 351 0.2689 50 0.11 94
IV.MOMA.HHZ. 2019-10-22T08:23:30.07 0.1 undecidable manual P 351 0.2689 50 -0.07 95
IT.GNU.HGE. 2019-10-22T08:23:30.04 0.3 undecidable manual P 351 0.2689 50 -0.1 71
IV.LNSS.HHZ. 2019-10-22T08:23:30.82 0.3 undecidable manual P 78 0.3085 50 0 71
IT.MMP1.HGE. 2019-10-22T08:23:30.51 0.3 undecidable manual P 163 0.3013 50 -0.19 69
IV.ARRO.EHZ. 2019-10-22T08:23:29.41 0.3 undecidable manual S 68 0.1079 129 0.1 73
IV.CESX.HHZ. 2019-10-22T08:23:28.67 0.3 undecidable manual S 336 0.0773 139 0.22 71
IV.ARRO.EHZ. 2019-10-22T08:23:27.29 0.1 undecidable manual P 68 0.1079 129 0.25 94
IV.CESX.HHZ. 2019-10-22T08:23:26.77 0.1 undecidable manual P 336 0.0773 139 0.22 95
IT.TRN1.HGN. 2019-10-22T08:23:26.95 0.1 undecidable manual S 31 0.0234 165 -0.5 91
IT.TRN1.HGN. 2019-10-22T08:23:26.00 0.1 undecidable manual P 31 0.0234 165 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.6 0.0005395 0.36 AML other m 2019-10-22T08:23:28.93
IV.CESX.HHE. ML:1.3 0.000309 1.12 AML other m 2019-10-22T08:23:29.93
IV.ARRO.EHN. ML:1.5 0.000399 0.34 AML other m 2019-10-22T08:23:30.73
IV.ARRO.EHE. ML:1.3 0.000229 0.72 AML other m 2019-10-22T08:23:31.68
IV.MOMA.HNE. ML:1.6 0.0002025 0.82 AML other m 2019-10-22T08:23:34.25
IV.MOMA.HNN. ML:1.8 0.0003415 0.68 AML other m 2019-10-22T08:23:36.02
IV.MOMA.HHE. ML:1.5 0.000164 0.2 AML other m 2019-10-22T08:23:36.06
IV.LNSS.HHE. ML:1.4 9.435E-5 0.5 AML other m 2019-10-22T08:23:36.17
IV.LNSS.HHN. ML:1.4 9.46E-5 0.16 AML other m 2019-10-22T08:23:36.61
IV.MOMA.HHN. ML:1.4 0.0001265 1.26 AML other m 2019-10-22T08:23:36.10
IV.EUCT.HNN. ML:4.1 0.0007465 0.3 AML other m 2019-10-22T08:25:12.99
IV.EUCT.HNE. ML:4.2 0.000985 0.8 AML other m 2019-10-22T08:25:13.36
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download