Earthquake with magnitude of ML 1.8 on date 19-07-2021 and time 09:06:31 (Italy) in region 5 km SE Balsorano (AQ)

A magnitude ML 1.8 earthquake occured in region: 5 km SE Balsorano (AQ), on

  • 19-07-2021 07:06:31 (UTC)
  • 19-07-2021 09:06:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.775, 13.603 at 16 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.

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 5 3569 3569
Pescosolido FR 5 1555 5124
Sora FR 6 26144 31268
Campoli Appennino FR 8 1725 32993
Broccostella FR 8 2741 35734
San Vincenzo Valle Roveto AQ 9 2347 38081
Villavallelonga AQ 11 919 39000
Isola del Liri FR 11 11715 50715
Castelliri FR 11 3454 54169
Posta Fibreno FR 12 1139 55308
Collelongo AQ 13 1233 56541
Fontechiari FR 13 1303 57844
Vicalvi FR 14 783 58627
Arpino FR 14 7262 65889
Alvito FR 15 2713 68602
Morino AQ 16 1448 70050
Pescasseroli AQ 16 2203 72253
Civita d'Antino AQ 17 979 73232
Monte San Giovanni Campano FR 17 12929 86161
Veroli FR 18 20560 106721
Boville Ernica FR 18 8737 115458
Casalvieri FR 18 2698 118156
Fontana Liri FR 19 2953 121109
Opi AQ 19 420 121529
San Donato Val di Comino FR 19 2107 123636
Lecce nei Marsi AQ 19 1702 125338
Santopadre FR 19 1357 126695
Collepardo FR 20 968 127663
Casalattico FR 20 574 128237

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)
70 Km E of Tivoli (56533 inhabitants)
77 Km E of Guidonia Montecelio (88673 inhabitants)
79 Km SW of Chieti (51815 inhabitants)
82 Km E of Aprilia (73446 inhabitants)
89 Km E of Anzio (54211 inhabitants)
92 Km SW of Pescara (121014 inhabitants)
92 Km E of Pomezia (62966 inhabitants)
94 Km E of Roma (2864731 inhabitants)
94 Km SW of Montesilvano (53738 inhabitants)
99 Km NW of Caserta (76326 inhabitants)
99 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 1.8 2021-07-19
07:06:31
41.775 13.6033 16 2021-12-29
11:12:49
Bollettino Sismico Italiano INGV 97204511
Reviewed
Rev100
ML 1.8 2021-07-19
07:06:31
41.7728 13.5997 14 2021-07-19
07:21:16
Sala Sismica INGV-Roma 92945501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-19 07:06:31 ± 0.05
Latitude 41.7750 ± 0.0036
Longitude 13.6033 ± 0.0036
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97204511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 351
Semi-minor axis of confidence ellipse (meter) 157
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 220
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 44
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) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.09533
Epicentral distance of station farthest from the epicenter (degree) 0.55488
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:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 92945501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-19 07:21:16

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 97204511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-03 15:36:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CERT.HHZ. 2021-07-19T07:06:48.82 0.6 undecidable manual S 291 0.4946 96 0.06 46
IV.T0110.HHZ. 2021-07-19T07:06:48.37 0.6 undecidable manual S 16 0.4721 97 0.27 44
IV.RCAV.EHZ. 2021-07-19T07:06:48.92 0.6 undecidable manual S 279 0.4955 96 0.13 46
IV.CERA.HHZ. 2021-07-19T07:06:44.70 0.3 undecidable manual S 120 0.357 100 -0.02 72
IV.GIUL.HHZ. 2021-07-19T07:06:44.50 0.6 undecidable manual S 230 0.339 101 0.3 45
IV.MCI.EHZ. 2021-07-19T07:06:44.01 0.6 undecidable manual S 151 0.3238 101 0.24 46
IV.PTQR.HHZ. 2021-07-19T07:06:43.06 0.6 undecidable manual S 329 0.2896 103 0.3 46
IV.LATB.EHZ. 2021-07-19T07:06:42.04 0.3 undecidable manual P 240 0.5549 96 -0.5 62
IV.RCAV.EHZ. 2021-07-19T07:06:41.37 0.3 undecidable manual P 279 0.4955 96 -0.15 68
IV.MIDA.HHZ. 2021-07-19T07:06:41.60 0.3 undecidable manual P 105 0.5036 96 -0.05 69
IV.CERT.HHZ. 2021-07-19T07:06:41.27 0.1 undecidable manual P 291 0.4946 96 -0.23 89
IV.LPEL.HHE. 2021-07-19T07:06:41.47 0.3 undecidable manual P 58 0.5099 96 -0.29 66
IV.T0110.HHZ. 2021-07-19T07:06:41.11 0.3 undecidable manual P 16 0.4721 97 -0.01 70
IT.OPI.HGZ. 2021-07-19T07:06:39.32 0.6 undecidable manual S 89 0.1691 119 -0.1 49
IV.CERA.HHZ. 2021-07-19T07:06:39.09 0.1 undecidable manual P 120 0.357 100 -0.08 95
IV.MCI.EHZ. 2021-07-19T07:06:38.89 0.3 undecidable manual P 151 0.3238 101 0.27 68
IV.PTQR.HHZ. 2021-07-19T07:06:38.13 0.1 undecidable manual P 329 0.2896 103 0.09 96
IV.LRP.EHZ. 2021-07-19T07:06:38.31 0.6 undecidable manual S 186 0.1286 128 -0.1 49
IV.GIUL.HHZ. 2021-07-19T07:06:38.97 0.1 undecidable manual P 230 0.339 101 0.1 94
IV.POFI.HHZ. 2021-07-19T07:06:37.53 0.6 undecidable manual S 125 0.0998 138 -0.25 48
IV.VVLD.HNZ. 2021-07-19T07:06:37.56 0.6 undecidable manual S 9 0.0953 139 -0.15 49
IT.OPI.HGZ. 2021-07-19T07:06:36.14 0.3 undecidable manual P 89 0.1691 119 0.03 74
IV.LRP.EHZ. 2021-07-19T07:06:35.63 0.1 negative manual P 186 0.1286 128 0.1 98
IV.POFI.HHZ. 2021-07-19T07:06:35.19 0.1 undecidable manual P 125 0.0998 138 0.03 100
IV.VVLD.HNZ. 2021-07-19T07:06:35.23 0.1 undecidable manual P 9 0.0953 139 0.11 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHN. ML:2.4 0.00225 1.58 AML other m 2021-07-19T07:06:37.81
IV.VVLD.HNN. ML:2.4 0.002055 1.56 AML other m 2021-07-19T07:06:37.81
IV.VVLD.HHE. ML:2.4 0.002055 0.46 AML other m 2021-07-19T07:06:37.89
IV.VVLD.HNE. ML:2.3 0.00188 0.46 AML other m 2021-07-19T07:06:37.90
IV.POFI.HHN. ML:1.6 0.000353 1.3 AML other m 2021-07-19T07:06:38.99
IV.POFI.HNN. ML:1.6 0.000344 0.7 AML other m 2021-07-19T07:06:38.00
IV.LRP.EHE. ML:2.5 0.002655 0.18 AML other m 2021-07-19T07:06:38.57
IV.LRP.EHN. ML:1.9 0.0006275 0.14 AML other m 2021-07-19T07:06:38.85
IV.POFI.HHE. ML:1.7 0.0004815 1.54 AML other m 2021-07-19T07:06:38.01
IV.POFI.HNE. ML:1.8 0.0005535 0.48 AML other m 2021-07-19T07:06:39.01
IV.PTQR.HHE. ML:1.9 0.0003075 0.14 AML other m 2021-07-19T07:06:43.76
IV.PTQR.HHN. ML:1.8 0.0002495 0.14 AML other m 2021-07-19T07:06:43.78
IV.GIUL.HHE. ML:1.5 0.00010085 0.38 AML other m 2021-07-19T07:06:44.60
IV.GIUL.HHN. ML:1.6 0.0001295 0.78 AML other m 2021-07-19T07:06:45.32
IV.MCI.EHE. ML:2.1 0.000516 1.5 AML other m 2021-07-19T07:06:46.21
IV.CERA.HHN. ML:1.8 0.0001945 0.2 AML other m 2021-07-19T07:06:46.63
IV.MCI.EHN. ML:2 0.000353 0.68 AML other m 2021-07-19T07:06:46.36
IV.CERA.HHE. ML:1.6 0.0001295 0.38 AML other m 2021-07-19T07:06:48.76
IV.CERT.HHE. ML:1.7 0.0001125 0.32 AML other m 2021-07-19T07:06:49.17
IV.CERT.HHN. ML:1.8 0.0001495 0.92 AML other m 2021-07-19T07:06:49.91
IV.T0110.HHN. ML:1.7 0.0001233 1.46 AML other m 2021-07-19T07:06:50.05
IV.MIDA.HHN. ML:1.4 5.81E-5 1.04 AML other m 2021-07-19T07:06:51.78
IV.T0110.HHE. ML:1.7 0.0001125 0.3 AML other m 2021-07-19T07:06:52.41
IV.RCAV.EHE. ML:1.7 0.0001093 1.54 AML other m 2021-07-19T07:06:53.91
IV.RCAV.EHN. ML:1.6 8.24E-5 0.2 AML other m 2021-07-19T07:06:53.91
IV.VIVA.HHN. ML:2.6 0.0006155 0.16 AML other m 2021-07-19T07:06:55.89
IV.MIDA.HHE. ML:1.3 4.59E-5 0.82 AML other m 2021-07-19T07:06:56.51
IV.VIVA.HHE. ML:2.7 0.0009235 0.18 AML other m 2021-07-19T07:07:06.66
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