Earthquake with magnitude of ML 0.8 on date 22-11-2020 and time 14:09:30 (Italy) in region 4 km NE Ussita (MC)

A magnitude ML 0.8 earthquake occured in region: 4 km NE Ussita (MC), on

  • 22-11-2020 13:09:30 (UTC)
  • 22-11-2020 14:09:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.97, 13.18 at 11 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
Bolognola MC 5 142 586
Acquacanina MC 6 121 707
Fiastra MC 7 559 1266
Visso MC 9 1107 2373
Castelsantangelo sul Nera MC 9 281 2654
Fiordimonte MC 10 202 2856
Pievebovigliana MC 12 866 3722
Sarnano MC 12 3264 6986
Pieve Torina MC 13 1458 8444
Montefortino FM 14 1178 9622
Monte Cavallo MC 14 145 9767
Amandola FM 15 3629 13396
Montemonaco AP 15 604 14000
Preci PG 15 724 14724
Muccia MC 16 915 15639
Cessapalombo MC 17 512 16151
Gualdo MC 17 815 16966
Caldarola MC 19 1823 18789
San Ginesio MC 19 3498 22287
Camporotondo di Fiastrone MC 19 563 22850
Montegallo AP 19 523 23373
Comunanza AP 20 3166 26539

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
63 Km NE of Terni (111501 inhabitants)
66 Km E of Perugia (166134 inhabitants)
72 Km N of L'Aquila (69753 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
95 Km NW of Montesilvano (53738 inhabitants)
98 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 0.8 2020-11-22
13:09:30
42.97 13.18 11 2020-11-22
13:24:59
Sala Sismica INGV-Roma 84944451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-22 13:09:30 ± 0.33
Latitude 42.97 ± 0.01
Longitude 13.18 ± 0.01
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84944451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 874
Semi-minor axis of confidence ellipse (meter) 328
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 43
Circular confidence region, given by single value of horizontal uncertainty (meter) 870
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.06295
Epicentral distance of station farthest from the epicenter (degree) 0.1331
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:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 84944451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-22 13:24:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2020-11-22T13:09:37.10 0.3 undecidable manual S 124 0.1331 127 -0.14 73
IT.MTCL.HGE. 2020-11-22T13:09:36.77 0.3 undecidable manual S 279 0.1304 127 -0.4 69
IV.CSP1.EHZ. 2020-11-22T13:09:36.98 0.6 undecidable manual S 10 0.1196 130 0.15 49
IV.MC2.EHZ. 2020-11-22T13:09:35.62 0.3 undecidable manual S 171 0.063 147 0.24 72
IV.FDMO.HHZ. 2020-11-22T13:09:35.95 0.3 undecidable manual S 314 0.0899 138 -0.06 75
IV.MMO1.EHZ. 2020-11-22T13:09:34.30 0.3 undecidable manual P 124 0.1331 127 -0.24 71
IT.MTCL.HGE. 2020-11-22T13:09:34.96 0.3 undecidable manual P 279 0.1304 127 0.46 68
IV.CSP1.EHZ. 2020-11-22T13:09:34.32 0.1 undecidable manual P 10 0.1196 130 0.01 100
IV.MC2.EHZ. 2020-11-22T13:09:33.53 0.3 negative manual P 171 0.063 147 0.07 75
IV.FDMO.HHZ. 2020-11-22T13:09:33.68 1.0 undecidable manual P 314 0.0899 138 -0.15 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.4 2.9611625E-5 0.1408 AML other m 2020-11-22T13:09:36.46
IV.FDMO.HHN. ML:0.6 5.1498725E-5 0.1152 AML other m 2020-11-22T13:09:36.14
IV.CSP1.EHE. ML:1 8.8595955E-5 1.9392 AML other m 2020-11-22T13:09:39.84
IV.CSP1.EHN. ML:1.1 0.00013590905 1.7984 AML other m 2020-11-22T13:09:37.78
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