Earthquake with magnitude of ML 1.3 on date 16-10-2021 and time 12:37:31 (Italy) in region 5 km SE Balsorano (AQ)

A magnitude ML 1.3 earthquake occured in region: 5 km SE Balsorano (AQ), on

  • 16-10-2021 10:37:31 (UTC)
  • 16-10-2021 12:37:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.776, 13.602 at 13 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
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 16 979 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
Lecce nei Marsi AQ 19 1702 122811
Opi AQ 19 420 123231
San Donato Val di Comino FR 19 2107 125338
Santopadre FR 19 1357 126695
Collepardo FR 19 968 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 S of Teramo (54892 inhabitants)
99 Km NW of Caserta (76326 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Reviewed
Rev100
ML 1.3 2021-10-16
10:37:31
41.7757 13.6023 13 2021-10-16
10:44:50
Sala Sismica INGV-Roma 96644711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-16 10:37:31 ± 0.11
Latitude 41.7757 ± 0.0036
Longitude 13.6023 ± 0.0048
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96644711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 457
Semi-minor axis of confidence ellipse (meter) 206
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 204
Circular confidence region, given by single value of horizontal uncertainty (meter) 460
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.32555
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 96644711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-16 10:44:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PIGN.HHZ. 2021-10-16T10:37:46.16 3.0 negative manual P 0.16 0
IV.PTQR.HHZ. 2021-10-16T10:37:42.87 0.6 undecidable manual S 329 0.2887 97 0.01 48
IV.GUAR.HHZ. 2021-10-16T10:37:40.44 0.6 undecidable manual S 275 0.2167 101 -0.33 46
IT.OPI.HGZ. 2021-10-16T10:37:39.45 0.6 undecidable manual S 90 0.17 108 0.03 50
IV.PTQR.HHZ. 2021-10-16T10:37:38.41 1.0 negative manual P 329 0.2887 97 0.21 23
IV.INTR.HHZ. 2021-10-16T10:37:38.62 0.6 positive manual P 44 0.3256 96 -0.21 46
IV.LRP.EHZ. 2021-10-16T10:37:38.28 0.6 undecidable manual S 185 0.1286 119 -0.02 49
IV.VVLD.HHZ. 2021-10-16T10:37:37.42 0.6 undecidable manual S 9 0.0953 131 -0.06 50
IV.POFI.HHZ. 2021-10-16T10:37:37.53 0.6 undecidable manual S 125 0.1007 129 -0.07 49
IV.GUAR.HHZ. 2021-10-16T10:37:37.38 0.6 undecidable manual P 275 0.2167 101 0.39 45
IT.OPI.HGZ. 2021-10-16T10:37:36.19 0.6 undecidable manual P 90 0.17 108 -0.02 49
IV.VVLD.HHZ. 2021-10-16T10:37:35.12 0.1 negative manual P 9 0.0953 131 0.03 100
IV.POFI.HHZ. 2021-10-16T10:37:35.21 0.6 undecidable manual P 125 0.1007 129 0.05 50
IV.LRP.EHZ. 2021-10-16T10:37:35.61 0.3 undecidable manual P 185 0.1286 119 0.04 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHN. ML:1.4 0.0002715 0.14 AML other m 2021-10-16T10:37:37.57
IV.VVLD.HHE. ML:1.1 0.0001290903 0.1792 AML other m 2021-10-16T10:37:37.71
IV.POFI.HHN. ML:0.6 3.5170575E-5 0.16 AML other m 2021-10-16T10:37:38.93
IV.LRP.EHE. ML:1.5 0.000276 0.18 AML other m 2021-10-16T10:37:38.46
IV.LRP.EHN. ML:0.8 5.5910245E-5 0.0832 AML other m 2021-10-16T10:37:38.94
IV.POFI.HHE. ML:0.7 4.7112705E-5 0.1024 AML other m 2021-10-16T10:37:38.63
IV.PTQR.HHE. ML:0.8 2.674341E-5 0.1408 AML other m 2021-10-16T10:37:43.65
IV.PTQR.HHN. ML:0.8 2.697369E-5 0.1408 AML other m 2021-10-16T10:37:44.09
IV.VVLD.HNE. ML:1.1 0.00012623095 0.0768 AML other m 2021-10-16T10:37:37.67
IV.VVLD.HNN. ML:1.4 0.0002658861 0.1472 AML other m 2021-10-16T10:37:37.57
IV.POFI.HNE. ML:0.9 8.53193E-5 0.5888 AML other m 2021-10-16T10:37:42.53
IV.POFI.HNN. ML:1.2 0.000163642725 1.0496 AML other m 2021-10-16T10:37:43.35
IV.INTR.HHE. ML:1 3.7335505E-5 0.7424 AML other m 2021-10-16T10:37:53.90
IV.INTR.HHN. ML:1.2 5.3667895E-5 0.7616 AML other m 2021-10-16T10:37:43.62
IV.INTR.HNE. ML:1.6 0.00016262885 0.9856 AML other m 2021-10-16T10:37:49.62
IV.INTR.HNN. ML:1.7 0.00017766148 1.12 AML other m 2021-10-16T10:37:55.58
IV.PIGN.HNE. ML:1.6 5.5319215E-5 1.0112 AML other m 2021-10-16T10:38:02.59
IV.PIGN.HNN. ML:1.5 4.7312805E-5 0.3712 AML other m 2021-10-16T10:38:00.09
IV.PIGN.HHE. ML:1.3 2.403958E-5 0.4608 AML other m 2021-10-16T10:38:17.46
IV.PIGN.HHN. ML:1.3 3.01220815E-5 0.16 AML other m 2021-10-16T10:38:04.90
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