Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 22-10-2019 and time 04:18:56 (Italy) in region 3 km SW Terni (TR)

A magnitude ML 1.1 earthquake occured in region: 3 km SW Terni (TR), on

  • 22-10-2019 02:18:56 (UTC)
  • 22-10-2019 04:18:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5380, 12.6230 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
Terni TR 3 111501 111501
Stroncone TR 6 4917 116418
Narni TR 9 19785 136203
San Gemini TR 11 5018 141221
Configni RI 13 633 141854
Arrone TR 13 2763 144617
Colli sul Velino RI 14 533 145150
Montefranco TR 14 1276 146426
Labro RI 15 374 146800
Greccio RI 15 1558 148358
Cottanello RI 16 563 148921
Calvi dell'Umbria TR 16 1856 150777
Ferentillo TR 17 1913 152690
Montecastrilli TR 17 5022 157712
Vacone RI 17 256 157968
Morro Reatino RI 17 373 158341
Otricoli TR 17 1869 160210
Amelia TR 17 11897 172107
Montasola RI 18 395 172502
Acquasparta TR 18 4778 177280
Contigliano RI 18 3783 181063
Polino TR 19 233 181296
Montebuono RI 19 883 182179
Rivodutri RI 19 1253 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 S of Perugia (166134 inhabitants)
67 Km W of L'Aquila (69753 inhabitants)
73 Km N of Roma (2864731 inhabitants)
84 Km NE of Civitavecchia (52991 inhabitants)
90 Km W of Teramo (54892 inhabitants)
91 Km NE of Fiumicino (78395 inhabitants)
96 Km N of Velletri (53303 inhabitants)
97 Km N of Pomezia (62966 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 1.1 2019-10-22
02:18:56		 42.5383 12.6232 9 2020-02-28
16:42:16		 Bollettino Sismico Italiano INGV 75074421
Reviewed
Rev100 		ML 1.0 2019-10-22
02:18:56		 42.5403 12.6227 9 2019-10-22
02:33:04		 Sala Sismica INGV-Roma 73383451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-22 02:18:56 ± 0.11
Latitude 42.5383 ± 0.0063
Longitude 12.6232 ± 0.0073
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 75074421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 680
Semi-minor axis of confidence ellipse (meter) 626
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 213
Circular confidence region, given by single value of horizontal uncertainty (meter) 680.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
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) 0.53240
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 73383451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-22 02:33:04

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 75074421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-29 07:50:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.COR1.EHZ. 2019-10-22T02:19:16.15 3.0 undecidable manual P -1.73 0
IV.SMA1.EHZ. 2019-10-22T02:19:15.21 0.3 undecidable manual S 80 59.0964 50 0.37 64
IV.ASSB.HHZ. 2019-10-22T02:19:14.42 0.6 undecidable manual S 3 55.9995 50 0.4 43
IV.NRCA.HHZ. 2019-10-22T02:19:12.68 0.3 undecidable manual S 51 51.7038 50 -0.2 67
IV.SRES.HHZ. 2019-10-22T02:19:08.21 0.6 undecidable manual S 196 34.743 50 -0.12 47
IV.LNSS.HHZ. 2019-10-22T02:19:07.92 0.3 undecidable manual S 78 34.8429 50 -0.45 66
IV.SMA1.EHZ. 2019-10-22T02:19:07.50 0.3 undecidable manual P 80 59.0964 50 0.52 62
IV.MOMA.HHZ. 2019-10-22T02:19:06.79 0.3 undecidable manual S 352 29.748 50 -0.23 69
IV.ASSB.HHZ. 2019-10-22T02:19:06.85 0.6 undecidable manual P 3 55.9995 50 0.34 43
IV.NRCA.HHZ. 2019-10-22T02:19:05.75 0.3 undecidable manual P 51 51.7038 50 -0.1 69
IV.SRES.HHZ. 2019-10-22T02:19:03.34 0.6 undecidable manual P 196 34.743 50 0.11 47
IV.LNSS.HHZ. 2019-10-22T02:19:03.08 0.3 undecidable manual P 78 34.8429 50 -0.17 70
IV.MOMA.HHZ. 2019-10-22T02:19:02.26 0.1 undecidable manual P 352 29.748 50 -0.2 93
IV.ARRO.EHZ. 2019-10-22T02:19:01.80 0.3 undecidable manual S 69 12.4764 127 0.13 73
IV.CESX.HHZ. 2019-10-22T02:19:00.66 0.3 undecidable manual S 339 8.2806 139 0.06 75
IV.ARRO.EHZ. 2019-10-22T02:18:59.52 0.3 undecidable manual P 69 12.4764 127 0.14 73
IT.TRN1.HGZ. 2019-10-22T02:18:58.14 0.1 undecidable manual P 41 2.8971 163 -0.08 100
IV.CESX.HHZ. 2019-10-22T02:18:58.99 0.1 undecidable manual P 339 8.2806 139 0.23 96
IT.TRN1.HGZ. 2019-10-22T02:18:58.99 0.6 undecidable manual S 41 2.8971 163 -0.67 43
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.3 0.00028752105 1.64 AML other m 2019-10-22T02:19:01.84
IV.CESX.HHE. ML:1.0 0.00015873765 0.2816 AML other m 2019-10-22T02:19:02.44
IV.ARRO.EHN. ML:1.2 0.0001666927 0.3408 AML other m 2019-10-22T02:19:02.83
IV.ARRO.EHE. ML:1.0 0.00011221524999999999 0.2816 AML other m 2019-10-22T02:19:02.79
IV.MOMA.HNE. ML:1.4 0.00011023205 1.7104 AML other m 2019-10-22T02:19:07.87
IV.MOMA.HHE. ML:1.3 0.00009461808999999999 0.2 AML other m 2019-10-22T02:19:08.26
IV.LNSS.HHE. ML:1.2 0.000061702295 0.16 AML other m 2019-10-22T02:19:08.59
IV.MOMA.HHN. ML:1.1 0.00006450409499999999 0.16 AML other m 2019-10-22T02:19:08.84
IV.LNSS.HHN. ML:1.1 0.000056792955 0.1792 AML other m 2019-10-22T02:19:08.83
IV.SRES.HHE. ML:0.7 0.000021674674999999996 0.1808 AML other m 2019-10-22T02:19:09.94
IV.SRES.HHN. ML:0.6 0.000014087401499999999 0.16 AML other m 2019-10-22T02:19:11.19
IV.NRCA.HHE. ML:1.1 0.000029615435000000004 0.1392 AML other m 2019-10-22T02:19:13.50
IV.NRCA.HHN. ML:1.0 0.000022943190000000004 0.1008 AML other m 2019-10-22T02:19:14.52
IV.SMA1.EHN. ML:0.7 0.000011016237499999999 0.1184 AML other m 2019-10-22T02:19:16.37
IV.SMA1.EHE. ML:0.8 0.00001594958 0.4208 AML other m 2019-10-22T02:19:17.84
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