Earthquake with magnitude of ML 0.9 on date 25-10-2020 and time 03:00:48 (UTC) in region 5 km W Micigliano (RI)

A magnitude ML 0.9 earthquake occured in region: 5 km W Micigliano (RI), on

  • 25-10-2020 03:00:48 (UTC)
  • 25-10-2020 04:00:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.46, 12.99 at 10 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
Micigliano RI 5 127 127
Cantalice RI 7 2755 2882
Castel Sant'Angelo RI 8 1308 4190
Borgo Velino RI 8 972 5162
Antrodoco RI 9 2588 7750
Cittaducale RI 9 6828 14578
Poggio Bustone RI 10 2055 16633
Posta RI 11 694 17327
Leonessa RI 11 2435 19762
Rieti RI 13 47698 67460
Rivodutri RI 13 1253 68713
Borbona RI 13 617 69330
Morro Reatino RI 15 373 69703
Concerviano RI 16 291 69994
Labro RI 17 374 70368
Colli sul Velino RI 18 533 70901
Belmonte in Sabina RI 18 636 71537
Polino TR 18 233 71770
Greccio RI 18 1558 73328
Cagnano Amiterno AQ 19 1369 74697
Contigliano RI 19 3783 78480
Petrella Salto RI 20 1197 79677

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Terni (111501 inhabitants)
36 Km W of L'Aquila (69753 inhabitants)
56 Km NE of Guidonia Montecelio (88673 inhabitants)
58 Km N of Tivoli (56533 inhabitants)
60 Km SE of Foligno (57155 inhabitants)
62 Km W of Teramo (54892 inhabitants)
73 Km E of Viterbo (67173 inhabitants)
76 Km NE of Roma (2864731 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
88 Km N of Velletri (53303 inhabitants)
95 Km W of Montesilvano (53738 inhabitants)
97 Km NE of Pomezia (62966 inhabitants)
97 Km W of Chieti (51815 inhabitants)
99 Km NE of Fiumicino (78395 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 0.9 2020-10-25
03:00:48
42.46 12.99 10 2020-10-25
03:24:37
Sala Sismica INGV-Roma 84107051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-25 03:00:48 ± 0.15
Latitude 42.46 ± 0.01
Longitude 12.99 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84107051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 909
Semi-minor axis of confidence ellipse (meter) 202
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 7
Circular confidence region, given by single value of horizontal uncertainty (meter) 910
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 230
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.14299
Epicentral distance of station farthest from the epicenter (degree) 0.37951
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0
Num. used stations 2
Type of magnitude ML
Reference to an origin 84107051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-25 03:24:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SMA1.EHZ. 2020-10-25T03:01:00.46 0.6 undecidable manual S 57 0.3022 50 0.06 69
IV.ARRO.EHZ. 2020-10-25T03:00:57.22 0.6 undecidable manual S 305 0.2023 114 -0.14 69
IV.RM33.EHZ. 2020-10-25T03:00:56.02 0.6 undecidable manual S 75 0.17 118 -0.19 68
IV.NRCA.HHZ. 2020-10-25T03:00:56.70 0.3 negative manual P 14 0.3795 50 -0.12 100
IV.LNSS.HHZ. 2020-10-25T03:00:55.35 0.6 undecidable manual S 14 0.143 123 0.03 71
IV.SMA1.EHZ. 2020-10-25T03:00:55.55 1.0 positive manual P 57 0.3022 50 0.05 34
IV.RM33.EHZ. 2020-10-25T03:00:53.16 0.6 negative manual P 75 0.17 118 0.09 70
IV.ARRO.EHZ. 2020-10-25T03:00:53.83 0.6 negative manual P 305 0.2023 114 0.1 69
IV.LNSS.HHZ. 2020-10-25T03:00:52.77 0.6 undecidable manual P 14 0.143 123 0.21 69
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:0.9 5.87E-5 0.94 AML other m 2020-10-25T03:00:56.64
IV.RM33.EHE. ML:0.9 6.255E-5 0.24 AML other m 2020-10-25T03:00:56.53
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