Earthquake with magnitude of ML 0.9 on date 26-10-2020 and time 00:32:01 (Italy) in region 4 km NE Ussita (MC)

A magnitude ML 0.9 earthquake occured in region: 4 km NE Ussita (MC), on

  • 25-10-2020 23:32:01 (UTC)
  • 26-10-2020 00:32:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.98, 13.16 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
Ussita MC 4 444 444
Acquacanina MC 6 121 565
Bolognola MC 6 142 707
Fiastra MC 6 559 1266
Visso MC 8 1107 2373
Fiordimonte MC 8 202 2575
Castelsantangelo sul Nera MC 9 281 2856
Pievebovigliana MC 11 866 3722
Pieve Torina MC 11 1458 5180
Monte Cavallo MC 13 145 5325
Sarnano MC 14 3264 8589
Muccia MC 15 915 9504
Preci PG 15 724 10228
Montefortino FM 16 1178 11406
Amandola FM 16 3629 15035
Montemonaco AP 17 604 15639
Cessapalombo MC 17 512 16151
Gualdo MC 18 815 16966
Caldarola MC 19 1823 18789
Camerino MC 19 6974 25763
Camporotondo di Fiastrone MC 19 563 26326
Serravalle di Chienti MC 19 1070 27396
San Ginesio MC 20 3498 30894

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
62 Km NE of Terni (111501 inhabitants)
64 Km E of Perugia (166134 inhabitants)
73 Km N of L'Aquila (69753 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
96 Km NW of Montesilvano (53738 inhabitants)
97 Km S of Fano (60888 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
23:32:01
42.98 13.15 14 2020-10-25
23:38:32
Sala Sismica INGV-Roma 84136381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-25 23:32:01 ± 0.18
Latitude 42.98 ± 0.01
Longitude 13.15 ± 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 84136381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 683
Semi-minor axis of confidence ellipse (meter) 217
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 49
Circular confidence region, given by single value of horizontal uncertainty (meter) 680
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.18886
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 84136381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-25 23:38:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RMP.HHZ. 2020-10-25T23:32:20.39 3.0 negative manual Pg 6.67 0
IV.MPAG.EHZ. 2020-10-25T23:32:16.08 3.0 undecidable manual Sn -2.75 0
IV.CESI.HNZ. 2020-10-25T23:32:09.96 0.3 undecidable manual S 278 0.1844 108 0.19 95
IV.MML1.HNZ. 2020-10-25T23:32:09.81 0.3 undecidable manual S 315 0.1889 107 -0.08 97
IV.NRCA.HHZ. 2020-10-25T23:32:08.69 0.3 undecidable manual S 191 0.1493 115 -0.13 98
IV.MMO1.EHZ. 2020-10-25T23:32:08.76 0.3 undecidable manual S 123 0.1493 115 -0.06 98
IV.CSP1.EHZ. 2020-10-25T23:32:07.98 0.3 undecidable manual S 18 0.1169 125 0 98
IV.MC2.EHZ. 2020-10-25T23:32:07.33 0.3 undecidable manual S 160 0.0737 142 0.3 96
IV.CESI.HNZ. 2020-10-25T23:32:06.41 0.3 undecidable manual P 278 0.1844 108 0.03 98
IV.FDMO.HHZ. 2020-10-25T23:32:06.89 0.3 undecidable manual S 319 0.0746 141 -0.17 97
IV.MML1.HNZ. 2020-10-25T23:32:06.43 0.3 undecidable manual P 315 0.1889 107 -0.01 99
IV.MC2.EHZ. 2020-10-25T23:32:05.03 0.6 negative manual P 160 0.0737 142 0.24 64
IV.NRCA.HHZ. 2020-10-25T23:32:05.17 0.6 negative manual P 191 0.1493 115 -0.65 57
IV.CSP1.EHZ. 2020-10-25T23:32:05.48 0.3 undecidable manual P 18 0.1169 125 0.14 98
IV.MMO1.EHZ. 2020-10-25T23:32:05.82 0.3 negative manual P 123 0.1493 115 0 99
IV.MMUR.HNZ. 2020-10-25T23:32:04.29 3.0 undecidable manual P -0.17 0
IV.FDMO.HHZ. 2020-10-25T23:32:04.77 0.3 undecidable manual P 319 0.0746 141 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.4 3.236398E-5 0.0768 AML other m 2020-10-25T23:32:07.48
IV.FDMO.HHN. ML:0.5 3.4122085E-5 0.2688 AML other m 2020-10-25T23:32:07.24
IV.NRCA.HHE. ML:1.1 0.000107269085 0.1536 AML other m 2020-10-25T23:32:08.86
IV.NRCA.HHN. ML:1 7.087041E-5 0.128 AML other m 2020-10-25T23:32:09.27
IV.NRCA.HNE. ML:1.2 0.0001098836 0.9088 AML other m 2020-10-25T23:32:09.31
IV.NRCA.HNN. ML:1.4 0.000175932 1.3312 AML other m 2020-10-25T23:32:09.93
IV.CSP1.EHE. ML:0.8 5.337479E-5 0.384 AML other m 2020-10-25T23:32:07.96
IV.CSP1.EHN. ML:0.9 6.631563E-5 2.3168 AML other m 2020-10-25T23:32:08.57
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