Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 07-11-2019 and time 22:23:00 (Italy) in region 4 km SE Balsorano (AQ)

A magnitude ML 1.0 earthquake occured in region: 4 km SE Balsorano (AQ), on

  • 07-11-2019 21:23:00 (UTC)
  • 07-11-2019 22:23:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.78, 13.59 at 12 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.

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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 6 26144 31268
Campoli Appennino FR 8 1725 32993
San Vincenzo Valle Roveto AQ 9 2347 35340
Broccostella FR 9 2741 38081
Villavallelonga AQ 11 919 39000
Isola del Liri FR 11 11715 50715
Castelliri FR 11 3454 54169
Collelongo AQ 13 1233 55402
Posta Fibreno FR 13 1139 56541
Fontechiari FR 14 1303 57844
Arpino FR 14 7262 65106
Vicalvi FR 15 783 65889
Morino AQ 15 1448 67337
Civita d'Antino AQ 16 979 68316
Alvito FR 16 2713 71029
Monte San Giovanni Campano FR 16 12929 83958
Pescasseroli AQ 17 2203 86161
Veroli FR 17 20560 106721
Boville Ernica FR 18 8737 115458
Fontana Liri FR 19 2953 118411
Collepardo FR 19 968 119379
Casalvieri FR 19 2698 122077
Lecce nei Marsi AQ 19 1702 123779
Santopadre FR 19 1357 125136
Opi AQ 20 420 125556
San Donato Val di Comino FR 20 2107 127663

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)
68 Km E of Velletri (53303 inhabitants)
69 Km E of Tivoli (56533 inhabitants)
76 Km E of Guidonia Montecelio (88673 inhabitants)
80 Km SW of Chieti (51815 inhabitants)
81 Km E of Aprilia (73446 inhabitants)
88 Km E of Anzio (54211 inhabitants)
91 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)
99 Km S of Teramo (54892 inhabitants)
99 Km NW of Caserta (76326 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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
Rev 100 ML 1.0 2019-11-07
21:23:00		 41.78 13.59 12 2019-11-07
21:53:50		 Sala Sismica INGV-Roma 73716431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-11-07 21:23:00 ± 0.06
Latitude 41.78 ± 0.00
Longitude 13.59 ± 0.00
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73716431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 261
Semi-minor axis of confidence ellipse (meter) 164
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 272
Circular confidence region, given by single value of horizontal uncertainty (meter) 260
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33185
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 73716431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-11-07 21:53:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.MCLF.HNZ. 2019-11-07T21:23:19.89 3.0 undecidable manual P 0.36 0
IV.INTR.HHZ. 2019-11-07T21:23:13.04 0.3 undecidable manual S 45 0.3318 93 -0.03 72
IV.GIUL.HHZ. 2019-11-07T21:23:13.03 0.3 undecidable manual S 229 0.3318 93 -0.04 71
IV.PTQR.HHZ. 2019-11-07T21:23:11.65 0.3 undecidable manual S 330 0.2842 94 -0.01 73
IV.CERT.HHZ. 2019-11-07T21:23:10.21 3.0 negative manual P -0.25 0
IV.GUAR.HHZ. 2019-11-07T21:23:09.36 0.3 undecidable manual S 275 0.2086 97 -0.07 73
IV.INTR.HHZ. 2019-11-07T21:23:07.62 0.1 undecidable manual P 45 0.3318 93 -0.26 92
IV.GIUL.HHZ. 2019-11-07T21:23:07.86 0.1 undecidable manual P 229 0.3318 93 -0.02 96
IV.PTQR.HHZ. 2019-11-07T21:23:07.27 0.3 undecidable manual P 330 0.2842 94 0.21 69
IV.LRP.EHZ. 2019-11-07T21:23:07.16 0.1 undecidable manual S 181 0.1286 112 0.04 100
IV.VVLD.HHZ. 2019-11-07T21:23:06.22 0.3 undecidable manual S 14 0.0971 125 -0.09 74
IV.POFI.HHZ. 2019-11-07T21:23:06.54 0.3 undecidable manual S 123 0.107 121 -0.02 75
IV.GUAR.HHZ. 2019-11-07T21:23:05.74 0.3 undecidable manual P 275 0.2086 97 -0.03 73
IV.POFI.HHZ. 2019-11-07T21:23:04.13 0.3 undecidable manual P 123 0.107 121 0.02 75
IV.LRP.EHZ. 2019-11-07T21:23:04.53 0.3 undecidable manual P 181 0.1286 112 0.09 74
IV.VVLD.HHZ. 2019-11-07T21:23:04.07 0.1 undecidable manual P 14 0.0971 125 0.1 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHN. ML:1 0.0001023 0.9 AML other m 2019-11-07T21:23:07.54
IV.LRP.EHN. ML:1.3 0.0001665 0.16 AML other m 2019-11-07T21:23:07.70
IV.POFI.HHE. ML:0.5 2.92E-5 1.3 AML other m 2019-11-07T21:23:07.71
IV.LRP.EHE. ML:1.1 0.000112 0.12 AML other m 2019-11-07T21:23:07.78
IV.VVLD.HHE. ML:0.8 6.945E-5 1.28 AML other m 2019-11-07T21:23:07.21
IV.POFI.HHN. ML:0.4 2.7E-5 1.46 AML other m 2019-11-07T21:23:08.90
IV.GUAR.HHN. ML:1.1 8.205E-5 1.16 AML other m 2019-11-07T21:23:10.70
IV.GUAR.HHE. ML:0.8 4.16E-5 1.5 AML other m 2019-11-07T21:23:10.07
IV.PTQR.HHE. ML:1 4.79E-5 0.24 AML other m 2019-11-07T21:23:12.01
IV.PTQR.HHN. ML:0.8 2.92E-5 0.72 AML other m 2019-11-07T21:23:12.54
IV.INTR.HHE. ML:1 3.825E-5 0.9 AML other m 2019-11-07T21:23:14.69
IV.INTR.HHN. ML:1.1 4.54E-5 0.8 AML other m 2019-11-07T21:23:15.28
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download