Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 23-11-2020 and time 01:06:38 (UTC) in region 3 km NE Campoli Appennino (FR)

A magnitude ML 1.5 earthquake occured in region: 3 km NE Campoli Appennino (FR), on

  • 23-11-2020 01:06:38 (UTC)
  • 23-11-2020 02:06:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7610, 13.6950 at 6 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.

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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
Campoli Appennino FR 3 1725 1725
Pescosolido FR 3 1555 3280
Posta Fibreno FR 7 1139 4419
Sora FR 8 26144 30563
Broccostella FR 8 2741 33304
Alvito FR 9 2713 36017
Vicalvi FR 9 783 36800
Pescasseroli AQ 10 2203 39003
Fontechiari FR 10 1303 40306
San Donato Val di Comino FR 12 2107 42413
Opi AQ 12 420 42833
Balsorano AQ 12 3569 46402
Villavallelonga AQ 13 919 47321
Isola del Liri FR 13 11715 59036
Gallinaro FR 14 1269 60305
Arpino FR 14 7262 67567
Casalvieri FR 14 2698 70265
Castelliri FR 15 3454 73719
Casalattico FR 16 574 74293
San Vincenzo Valle Roveto AQ 16 2347 76640
Settefrati FR 16 728 77368
Collelongo AQ 17 1233 78601
Atina FR 18 4316 82917
Santopadre FR 18 1357 84274
Bisegna AQ 19 223 84497
Picinisco FR 19 1218 85715
Lecce nei Marsi AQ 19 1702 87417
Villetta Barrea AQ 19 653 88070

Municipalities with at least 50000 inhabitants

An earthquake occurred to
70 Km SE of L'Aquila (69753 inhabitants)
73 Km E of Latina (125985 inhabitants)
76 Km SW of Chieti (51815 inhabitants)
77 Km E of Velletri (53303 inhabitants)
78 Km E of Tivoli (56533 inhabitants)
85 Km E of Guidonia Montecelio (88673 inhabitants)
89 Km E of Aprilia (73446 inhabitants)
89 Km SW of Pescara (121014 inhabitants)
92 Km SW of Montesilvano (53738 inhabitants)
93 Km NW of Caserta (76326 inhabitants)
95 Km E of Anzio (54211 inhabitants)
97 Km NW of Aversa (53047 inhabitants)
100 Km E of Pomezia (62966 inhabitants)
100 Km S of Teramo (54892 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 1.5 2020-11-23
01:06:38		 41.7612 13.6952 6 2021-02-26
14:56:07		 Bollettino Sismico Italiano INGV 84978671
Reviewed
Rev100 		ML 1.5 2020-11-23
01:06:38		 41.7607 13.6965 6 2020-11-23
01:14:52		 Sala Sismica INGV-Roma 84957831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-23 01:06:38 ± 0.08
Latitude 41.7612 ± 0.0036
Longitude 13.6952 ± 0.0060
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84978671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 442
Semi-minor axis of confidence ellipse (meter) 228
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
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) 51
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.04497
Epicentral distance of station farthest from the epicenter (degree) 0.47214
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 84978671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-24 08:47:15

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 84957831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-23 01:14:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T0110.HHZ. 2020-11-23T01:06:56.59 0.3 undecidable manual S 7 52.4031 50 0.73 58
IV.GIUL.HHZ. 2020-11-23T01:06:53.48 0.3 undecidable manual S 239 42.9237 50 0.16 70
IV.PTQR.HHZ. 2020-11-23T01:06:51.86 0.3 undecidable manual S 320 37.8288 99 0.23 70
IV.GUAR.HHE. 2020-11-23T01:06:49.57 0.6 undecidable manual S 277 31.8459 101 -0.04 49
IV.CERA.HHZ. 2020-11-23T01:06:49.95 0.6 undecidable manual S 124 32.3454 101 0.2 47
IV.INTR.HHZ. 2020-11-23T01:06:49.99 0.3 undecidable manual S 32 32.745 101 0.1 72
IV.MCI.EHZ. 2020-11-23T01:06:49.88 0.6 undecidable manual S 162 31.5462 101 0.4 45
IV.T0110.HHZ. 2020-11-23T01:06:47.90 0.1 undecidable manual P 7 52.4031 50 -0.55 84
IV.GIUL.HHZ. 2020-11-23T01:06:46.60 0.1 undecidable manual P 239 42.9237 50 -0.39 89
IV.PTQR.HHZ. 2020-11-23T01:06:45.54 0.1 undecidable manual P 320 37.8288 99 -0.47 88
IV.INTR.HHZ. 2020-11-23T01:06:44.81 0.1 undecidable manual P 32 32.745 101 -0.2 94
IV.MCI.EHZ. 2020-11-23T01:06:44.93 0.6 undecidable manual P 162 31.5462 101 0.16 48
IV.GUAR.HHE. 2020-11-23T01:06:44.63 0.6 undecidable manual P 277 31.8459 101 -0.21 47
IV.CERA.HHZ. 2020-11-23T01:06:44.66 0.1 undecidable manual P 124 32.3454 101 -0.27 93
IV.LRP.EHZ. 2020-11-23T01:06:44.66 0.6 undecidable manual S 215 15.4734 112 0.53 45
IV.VVLD.HHZ. 2020-11-23T01:06:43.62 0.3 undecidable manual S 334 13.4754 115 0.15 74
IT.OPI.HGN. 2020-11-23T01:06:42.94 0.1 undecidable manual S 81 11.2776 119 0.14 99
IV.VVLD.HHZ. 2020-11-23T01:06:41.48 0.1 negative manual P 334 13.4754 115 0.18 98
IV.LRP.EHZ. 2020-11-23T01:06:41.99 0.1 undecidable manual P 215 15.4734 112 0.31 95
IT.OPI.HGN. 2020-11-23T01:06:41.01 0.1 undecidable manual P 81 11.2776 119 0.09 100
IV.POFI.HHZ. 2020-11-23T01:06:40.64 0.3 undecidable manual S 164 4.995 141 -0.47 70
IV.POFI.HHZ. 2020-11-23T01:06:39.83 0.3 positive manual P 164 4.995 141 -0.1 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HNN. ML:1.6 0.000531 0.6 AML other m 2020-11-23T01:06:43.52
IV.VVLD.HHE. ML:1.7 0.0006835 0.4 AML other m 2020-11-23T01:06:44.35
IV.VVLD.HNE. ML:1.7 0.0006925 0.4 AML other m 2020-11-23T01:06:44.15
IV.LRP.EHE. ML:1.2 0.00017749999999999998 1.32 AML other m 2020-11-23T01:06:45.14
IV.LRP.EHN. ML:0.6 0.00004180852999999999 0.3 AML other m 2020-11-23T01:06:45.40
IV.INTR.HHE. ML:1.4 0.00011499999999999999 0.24 AML other m 2020-11-23T01:06:51.24
IV.CERA.HNE. ML:1.6 0.0001835 0.6 AML other m 2020-11-23T01:06:51.44
IV.CERA.HHE. ML:1.6 0.00018976705 0.6 AML other m 2020-11-23T01:06:51.44
IV.CERA.HHN. ML:1.5 0.00014319935 1.44 AML other m 2020-11-23T01:06:51.08
IV.CERA.HNN. ML:1.5 0.00013427020000000001 1.44 AML other m 2020-11-23T01:06:51.09
IV.INTR.HHN. ML:1.4 0.00011785994 0.36 AML other m 2020-11-23T01:06:52.88
IV.T0110.HHN. ML:1.5 0.000086750475 1.64 AML other m 2020-11-23T01:06:58.18
IV.T0110.HHE. ML:1.4 0.000069502535 1.64 AML other m 2020-11-23T01:07:00.93
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