Earthquake with magnitude of ML 1.1 on date 04-03-2021 and time 04:38:12 (Italy) in region 5 km SE Monte Cavallo (MC)

A magnitude ML 1.1 earthquake occured in region: 5 km SE Monte Cavallo (MC), on

  • 04-03-2021 03:38:12 (UTC)
  • 04-03-2021 04:38:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.95, 13.02 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
Monte Cavallo MC 5 145 145
Visso MC 6 1107 1252
Preci PG 8 724 1976
Ussita MC 10 444 2420
Sellano PG 10 1079 3499
Pieve Torina MC 11 1458 4957
Fiordimonte MC 11 202 5159
Castelsantangelo sul Nera MC 13 281 5440
Pievebovigliana MC 13 866 6306
Serravalle di Chienti MC 14 1070 7376
Fiastra MC 14 559 7935
Muccia MC 15 915 8850
Acquacanina MC 15 121 8971
Cerreto di Spoleto PG 17 1075 10046
Bolognola MC 17 142 10188
Norcia PG 19 4957 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km E of Foligno (57155 inhabitants)
53 Km NE of Terni (111501 inhabitants)
54 Km E of Perugia (166134 inhabitants)
65 Km NW of Teramo (54892 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
96 Km NE of Viterbo (67173 inhabitants)
99 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 1.1 2021-03-04
03:38:12
42.95 13.02 10 2021-03-04
04:27:02
Sala Sismica INGV-Roma 87697911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-04 03:38:12 ± 0.05
Latitude 42.95 ± 0.00
Longitude 13.02 ± 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 87697911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 378
Semi-minor axis of confidence ellipse (meter) 307
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 242
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.02158
Epicentral distance of station farthest from the epicenter (degree) 0.54769
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 87697911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-04 04:27:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-03-04T03:38:31.64 0.1 undecidable manual S 354 0.5477 50 0.57 81
IV.EL6.EHZ. 2021-03-04T03:38:26.00 0.3 undecidable manual S 9 0.3804 50 -0.11 70
IV.SMA1.EHZ. 2021-03-04T03:38:26.59 0.6 undecidable manual S 144 0.3957 50 0.02 48
IV.ATCC.EHZ. 2021-03-04T03:38:25.64 0.1 undecidable manual S 310 0.3624 50 0.05 95
IV.ARVD.HHZ. 2021-03-04T03:38:22.91 0.3 undecidable manual P 354 0.5477 50 -0.18 67
IV.GUMA.HHZ. 2021-03-04T03:38:22.69 0.1 undecidable manual S 64 0.2536 50 0.34 91
IV.GAVE.EHZ. 2021-03-04T03:38:22.95 0.1 undecidable manual S 200 0.277 50 -0.11 95
IV.MMO1.EHZ. 2021-03-04T03:38:21.39 0.1 undecidable manual S 104 0.2293 50 -0.25 94
IV.SMA1.EHZ. 2021-03-04T03:38:20.51 1.0 positive manual P 144 0.3957 50 0.02 24
IV.CSP1.EHZ. 2021-03-04T03:38:20.08 0.1 undecidable manual S 44 0.1925 116 -0.31 93
IV.ATCC.EHZ. 2021-03-04T03:38:19.73 0.1 undecidable manual P 310 0.3624 50 -0.19 92
IV.EL6.EHZ. 2021-03-04T03:38:19.93 0.1 undecidable manual P 9 0.3804 50 -0.29 90
IV.GAVE.EHZ. 2021-03-04T03:38:18.40 0.1 undecidable manual P 200 0.277 50 -0.06 96
IV.NRCA.HHZ. 2021-03-04T03:38:18.63 0.1 undecidable manual S 151 0.1376 124 0.08 99
IV.GUMA.HHZ. 2021-03-04T03:38:18.20 0.1 undecidable manual P 64 0.2536 50 0.14 95
IV.CESI.HHZ. 2021-03-04T03:38:17.36 0.1 undecidable manual S 301 0.1007 132 -0.06 100
IV.MMO1.EHZ. 2021-03-04T03:38:17.52 0.1 undecidable manual P 104 0.2293 50 -0.12 96
IV.NRCA.HHZ. 2021-03-04T03:38:16.02 0.1 undecidable manual P 151 0.1376 124 0.16 97
IV.CSP1.EHZ. 2021-03-04T03:38:16.85 0.1 undecidable manual P 44 0.1925 116 -0.08 98
IT.MTCL.HGZ. 2021-03-04T03:38:15.87 0.1 undecidable manual S 338 0.0441 154 -0.24 97
IV.CESI.HHZ. 2021-03-04T03:38:15.34 0.1 undecidable manual P 301 0.1007 132 0.13 98
IV.FEMA.HNZ. 2021-03-04T03:38:15.92 0.3 undecidable manual S 66 0.0216 167 0.1 75
IV.FEMA.HNZ. 2021-03-04T03:38:14.61 0.1 undecidable manual P 66 0.0216 167 0.32 96
IT.MTCL.HGZ. 2021-03-04T03:38:14.55 0.1 undecidable manual P 338 0.0441 154 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.2 0.0002005 0.16 AML other m 2021-03-04T03:38:17.59
IV.CESI.HHN. ML:1.2 0.0001835 0.18 AML other m 2021-03-04T03:38:17.52
IV.NRCA.HHN. ML:1.4 0.000263 1.58 AML other m 2021-03-04T03:38:19.04
IV.NRCA.HHE. ML:1.2 0.0001675 0.42 AML other m 2021-03-04T03:38:19.29
IV.GUMA.HHE. ML:1.4 0.0001131 0.18 AML other m 2021-03-04T03:38:22.96
IV.GAVE.EHN. ML:0.9 3.825E-5 1.08 AML other m 2021-03-04T03:38:23.97
IV.GAVE.EHE. ML:1.1 5.425E-5 0.18 AML other m 2021-03-04T03:38:23.41
IV.GUMA.HHN. ML:0.9 4.395E-5 0.32 AML other m 2021-03-04T03:38:24.48
IV.NRCA.HNE. ML:1.3 0.00017913815 0.0896 AML other m 2021-03-04T03:38:19.30
IV.NRCA.HNN. ML:1.4 0.000236856315 0.12 AML other m 2021-03-04T03:38:19.05
IV.CSP1.EHE. ML:1.4 0.00019561715 0.24 AML other m 2021-03-04T03:38:20.86
IV.CSP1.EHN. ML:1.6 0.00025402655 0.24 AML other m 2021-03-04T03:38:20.78
IV.ATCC.EHE. ML:0.8 2.2151285E-5 0.2 AML other m 2021-03-04T03:38:26.68
IV.ATCC.EHN. ML:0.8 1.850071E-5 0.24 AML other m 2021-03-04T03:38:26.50
IV.EL6.EHE. ML:1 2.956156E-5 0.1392 AML other m 2021-03-04T03:38:26.55
IV.EL6.EHN. ML:1 3.3725785E-5 0.2208 AML other m 2021-03-04T03:38:27.06
IV.SMA1.EHN. ML:0.5 1.1082402E-5 0.2608 AML other m 2021-03-04T03:38:28.91
IV.ARVD.HHE. ML:0.4 5.1713805E-6 0.0816 AML other m 2021-03-04T03:38:32.56
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