Earthquake with magnitude of ML 0.8 on date 29-05-2020 and time 00:49:25 (Italy) in region 4 km SE Balsorano (AQ)

A magnitude ML 0.8 earthquake occured in region: 4 km SE Balsorano (AQ), on

  • 28-05-2020 22:49:25 (UTC)
  • 29-05-2020 00:49:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.78, 13.6 at 14 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 4 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 19 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)
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
Reviewed
Rev100
ML 0.8 2020-05-28
22:49:25
41.78 13.6 14 2020-05-28
23:20:28
Sala Sismica INGV-Roma 79668031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-28 22:49:25 ± 0.09
Latitude 41.78 ± 0.00
Longitude 13.60 ± 0.01
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79668031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 410
Semi-minor axis of confidence ellipse (meter) 325
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 111
Circular confidence region, given by single value of horizontal uncertainty (meter) 410
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.09533
Epicentral distance of station farthest from the epicenter (degree) 0.49193
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 79668031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-28 23:20:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CERT.HHZ. 2020-05-28T22:49:43.04 0.3 undecidable manual S 291 0.4919 94 0.02 69
IV.GIUL.HHZ. 2020-05-28T22:49:38.61 0.3 undecidable manual S 230 0.3372 97 0.16 70
IV.INTR.HHZ. 2020-05-28T22:49:38.45 0.1 undecidable manual S 44 0.3265 97 0.31 90
IV.CERT.HHZ. 2020-05-28T22:49:35.57 0.1 undecidable manual P 291 0.4919 94 -0.24 88
IV.GIUL.HHZ. 2020-05-28T22:49:33.15 0.1 undecidable manual P 230 0.3372 97 -0.02 95
IV.INTR.HHZ. 2020-05-28T22:49:32.83 0.1 undecidable manual P 44 0.3265 97 -0.16 93
IV.LRP.EHZ. 2020-05-28T22:49:32.53 0.1 undecidable manual S 185 0.1286 122 0.03 99
IV.POFI.HNE. 2020-05-28T22:49:31.59 0.3 undecidable manual S 125 0.1016 131 -0.26 72
IV.VVLD.HHZ. 2020-05-28T22:49:31.65 0.1 undecidable manual S 10 0.0953 133 -0.08 100
IT.OPI.HGN. 2020-05-28T22:49:30.34 0.3 undecidable manual P 90 0.1709 111 -0.05 73
IV.POFI.HNE. 2020-05-28T22:49:29.33 0.1 undecidable manual P 125 0.1016 131 -0.03 100
IV.VVLD.HHZ. 2020-05-28T22:49:29.36 0.1 undecidable manual P 10 0.0953 133 0.07 98
IV.LRP.EHZ. 2020-05-28T22:49:29.85 0.1 undecidable manual P 185 0.1286 122 0.12 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VVLD.HHE. ML:1 9.305E-5 0.18 AML other m 2020-05-28T22:49:31.70
IV.VVLD.HHN. ML:1.1 0.0001135 0.16 AML other m 2020-05-28T22:49:31.73
IV.LRP.EHE. ML:1 8.675E-5 0.18 AML other m 2020-05-28T22:49:32.66
IV.LRP.EHN. ML:0.4 2.205E-5 0.1 AML other m 2020-05-28T22:49:32.83
IV.CERT.HHE. ML:0.6 1.06078205E-5 0.3968 AML other m 2020-05-28T22:49:43.24
IV.CERT.HHN. ML:0.6 1.1285705E-5 1.5232 AML other m 2020-05-28T22:49:44.43
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