Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 23-03-2020 and time 19:30:14 (Italy) in region 4 km SE Balsorano (AQ)

A magnitude ML 1.9 earthquake occured in region: 4 km SE Balsorano (AQ), on

  • 23-03-2020 18:30:14 (UTC)
  • 23-03-2020 19:30:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7820, 13.5950 at 15 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
Balsorano AQ 4 3569 3569
Pescosolido FR 6 1555 5124
Sora FR 7 26144 31268
San Vincenzo Valle Roveto AQ 8 2347 33615
Campoli Appennino FR 9 1725 35340
Broccostella FR 9 2741 38081
Villavallelonga AQ 10 919 39000
Isola del Liri FR 12 11715 50715
Collelongo AQ 12 1233 51948
Castelliri FR 12 3454 55402
Posta Fibreno FR 13 1139 56541
Fontechiari FR 14 1303 57844
Morino AQ 15 1448 59292
Arpino FR 15 7262 66554
Vicalvi FR 15 783 67337
Civita d'Antino AQ 16 979 68316
Alvito FR 16 2713 71029
Pescasseroli AQ 16 2203 73232
Monte San Giovanni Campano FR 17 12929 86161
Veroli FR 18 20560 106721
Boville Ernica FR 18 8737 115458
Lecce nei Marsi AQ 19 1702 117160
Collepardo FR 19 968 118128
Fontana Liri FR 19 2953 121081
Casalvieri FR 19 2698 123779
Opi AQ 20 420 124199
Ortucchio AQ 20 1860 126059
San Donato Val di Comino FR 20 2107 128166
Santopadre FR 20 1357 129523

Municipalities with at least 50000 inhabitants

An earthquake occurred to
66 Km S of L'Aquila (69753 inhabitants)
67 Km NE of Latina (125985 inhabitants)
69 Km E of Velletri (53303 inhabitants)
69 Km E of Tivoli (56533 inhabitants)
76 Km E of Guidonia Montecelio (88673 inhabitants)
79 Km SW of Chieti (51815 inhabitants)
81 Km E of Aprilia (73446 inhabitants)
88 Km E of Anzio (54211 inhabitants)
92 Km E of Pomezia (62966 inhabitants)
92 Km SW of Pescara (121014 inhabitants)
93 Km E of Roma (2864731 inhabitants)
94 Km SW of Montesilvano (53738 inhabitants)
98 Km S of Teramo (54892 inhabitants)
100 Km NW of Caserta (76326 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 1.9 2020-03-23
18:30:14		 41.7815 13.5953 15 2020-07-18
21:08:30		 Bollettino Sismico Italiano INGV 77736421
Reviewed
Rev100 		ML 1.9 2020-03-23
18:30:14		 41.7798 13.6002 14 2020-03-23
18:37:59		 Sala Sismica INGV-Roma 77514241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-23 18:30:14 ± 0.06
Latitude 41.7815 ± 0.0036
Longitude 13.5953 ± 0.0036
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77736421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 35
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 192
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 46
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.09083
Epicentral distance of station farthest from the epicenter (degree) 0.55308
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 77736421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-31 22:03:13

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 77514241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-23 18:37:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LATB.EHZ. 2020-03-23T18:30:32.96 0.3 undecidable manual S 239 61.3941 94 -0.14 67
IV.T0110.HHZ. 2020-03-23T18:30:31.00 0.3 undecidable manual S 17 51.9036 95 0.44 63
IV.CERT.HHZ. 2020-03-23T18:30:31.07 0.3 undecidable manual S 290 54.0015 95 -0.05 70
IV.GIUL.HHZ. 2020-03-23T18:30:27.21 0.6 undecidable manual S 229 37.5291 98 0.45 44
IV.CERA.HHZ. 2020-03-23T18:30:27.74 0.3 undecidable manual S 120 40.5261 98 0.19 69
IV.PTQR.HHZ. 2020-03-23T18:30:25.39 0.3 undecidable manual S 329 31.1466 101 0.31 67
IV.MIDA.HHZ. 2020-03-23T18:30:24.38 0.3 undecidable manual P 106 56.6988 95 -0.01 69
IV.LPEL.HHZ. 2020-03-23T18:30:24.03 0.1 undecidable manual P 59 56.7987 95 -0.37 86
IV.LATB.EHZ. 2020-03-23T18:30:24.56 0.3 undecidable manual P 239 61.3941 94 -0.55 61
IV.CERT.HHZ. 2020-03-23T18:30:23.72 0.1 undecidable manual P 290 54.0015 95 -0.25 89
IV.GUAR.HHZ. 2020-03-23T18:30:23.06 0.3 undecidable manual S 274 23.4543 108 -0.02 73
IV.T0110.HHZ. 2020-03-23T18:30:23.58 0.1 undecidable manual P 17 51.9036 95 -0.07 93
IV.GIUL.HHZ. 2020-03-23T18:30:21.55 0.1 positive manual P 229 37.5291 98 0.09 94
IT.OPI.HGZ. 2020-03-23T18:30:21.83 0.3 undecidable manual S 92 19.4694 113 -0.25 70
IV.CERA.HHZ. 2020-03-23T18:30:21.94 0.1 undecidable manual P 120 40.5261 98 0.02 95
IV.MCI.EHZ. 2020-03-23T18:30:21.49 0.3 undecidable manual P 151 36.9297 99 0.13 70
IV.LRP.EHZ. 2020-03-23T18:30:20.96 0.3 undecidable manual S 183 14.9739 123 -0.06 73
IV.PTQR.HHZ. 2020-03-23T18:30:20.40 0.1 undecidable manual P 329 31.1466 101 -0.09 96
IV.POFI.HNZ. 2020-03-23T18:30:20.59 0.6 undecidable manual S 126 11.9769 131 0.2 49
IV.VVLD.HHZ. 2020-03-23T18:30:19.84 0.3 undecidable manual S 13 10.0788 138 -0.18 73
IV.GUAR.HHZ. 2020-03-23T18:30:19.41 0.1 positive manual P 274 23.4543 108 0.07 97
IT.OPI.HGZ. 2020-03-23T18:30:18.79 0.1 undecidable manual P 92 19.4694 113 0.03 98
IV.LRP.EHZ. 2020-03-23T18:30:18.23 0.1 undecidable manual P 183 14.9739 123 0.09 99
IV.VVLD.HHZ. 2020-03-23T18:30:17.66 0.1 negative manual P 13 10.0788 138 0.09 99
IV.POFI.HNZ. 2020-03-23T18:30:17.80 0.1 undecidable manual P 126 11.9769 131 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HNE. ML:2.0 0.00098177885 0.1408 AML other m 2020-03-23T18:30:20.35
IV.VVLD.HHE. ML:2.0 0.00104460855 0.1408 AML other m 2020-03-23T18:30:20.34
IV.VVLD.HHN. ML:2.2 0.001743952 0.1024 AML other m 2020-03-23T18:30:20.06
IV.VVLD.HNN. ML:2.2 0.001588135 0.1024 AML other m 2020-03-23T18:30:20.06
IV.GUAR.HHN. ML:2.0 0.00060158645 0.256 AML other m 2020-03-23T18:30:23.32
IV.GUAR.HHE. ML:1.6 0.00024932860000000004 0.1664 AML other m 2020-03-23T18:30:24.23
IV.PTQR.HHN. ML:1.8 0.00026388964999999996 0.192 AML other m 2020-03-23T18:30:26.51
IV.PTQR.HHE. ML:2.1 0.00052301675 0.2176 AML other m 2020-03-23T18:30:25.48
IV.MCI.EHN. ML:2.0 0.0003387226 0.2176 AML other m 2020-03-23T18:30:30.21
IV.MCI.EHE. ML:2.0 0.0003320358 0.2432 AML other m 2020-03-23T18:30:29.66
IV.GIUL.HHN. ML:1.6 0.00016174355000000002 0.2688 AML other m 2020-03-23T18:30:27.36
IV.GIUL.HHE. ML:1.6 0.0001545266 0.1792 AML other m 2020-03-23T18:30:27.33
IV.CERA.HHE. ML:1.9 0.0002468088 0.512 AML other m 2020-03-23T18:30:30.81
IV.CERA.HNE. ML:1.9 0.0002392124 0.5376 AML other m 2020-03-23T18:30:30.81
IV.CERA.HNN. ML:2.0 0.0003163515 0.2048 AML other m 2020-03-23T18:30:28.82
IV.CERA.HHN. ML:2.0 0.0003329956 0.2048 AML other m 2020-03-23T18:30:28.82
IV.T0110.HHE. ML:1.9 0.000187898555 0.448 AML other m 2020-03-23T18:30:34.87
IV.T0110.HHN. ML:1.9 0.00018396489999999998 1.6 AML other m 2020-03-23T18:30:35.03
IV.CERT.HHN. ML:2.0 0.0002412293 0.2176 AML other m 2020-03-23T18:30:31.22
IV.CERT.HHE. ML:1.9 0.00017508839999999998 0.3072 AML other m 2020-03-23T18:30:33.35
IV.LPEL.HNN. ML:1.9 0.00017096885 0.4736 AML other m 2020-03-23T18:30:34.84
IV.LPEL.HHE. ML:1.4 0.00006020931735 0.2816 AML other m 2020-03-23T18:30:34.47
IV.LPEL.HHN. ML:1.5 0.00007377499 0.1536 AML other m 2020-03-23T18:30:36.12
IV.MIDA.HNE. ML:1.5 0.00007732914500000001 0.384 AML other m 2020-03-23T18:30:36.58
IV.MIDA.HHE. ML:1.6 0.0000794135675 0.2432 AML other m 2020-03-23T18:30:34.65
IV.MIDA.HHN. ML:1.6 0.00008106757 0.4736 AML other m 2020-03-23T18:30:38.71
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