Earthquake with magnitude of ML 1.0 on date 19-10-2021 and time 04:47:49 (Italy) in region 4 km SE Monte Cavallo (MC)

A magnitude ML 1.0 earthquake occured in region: 4 km SE Monte Cavallo (MC), on

  • 19-10-2021 02:47:49 (UTC)
  • 19-10-2021 04:47:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.966, 13.038 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
Monte Cavallo MC 4 145 145
Visso MC 6 1107 1252
Ussita MC 9 444 1696
Pieve Torina MC 9 1458 3154
Fiordimonte MC 9 202 3356
Preci PG 10 724 4080
Pievebovigliana MC 11 866 4946
Castelsantangelo sul Nera MC 12 281 5227
Fiastra MC 12 559 5786
Sellano PG 12 1079 6865
Muccia MC 13 915 7780
Acquacanina MC 13 121 7901
Serravalle di Chienti MC 14 1070 8971
Bolognola MC 16 142 9113
Cerreto di Spoleto PG 19 1075 10188
Camerino MC 19 6974 17162
Norcia PG 20 4957 22119

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
55 Km NE of Terni (111501 inhabitants)
55 Km E of Perugia (166134 inhabitants)
64 Km NW of Teramo (54892 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
98 Km NE of Viterbo (67173 inhabitants)
98 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.0 2021-10-19
02:47:49
42.9662 13.0383 14 2021-10-19
02:56:51
Sala Sismica INGV-Roma 96746291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-19 02:47:49 ± 0.08
Latitude 42.9662 ± 0.0036
Longitude 13.0383 ± 0.0025
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 96746291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 288
Semi-minor axis of confidence ellipse (meter) 267
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 38
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.10522
Epicentral distance of station farthest from the epicenter (degree) 0.36602
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 96746291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-19 02:56:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-10-19T02:48:03.46 0.3 undecidable manual S 7 0.366 96 0.45 66
IV.SNTG.HHZ. 2021-10-19T02:48:01.05 0.3 undecidable manual S 346 0.2977 98 0.05 73
IV.ASSB.HHZ. 2021-10-19T02:48:00.77 0.3 undecidable manual S 286 0.2878 99 0.05 72
IV.MMO1.EHZ. 2021-10-19T02:47:58.71 0.3 undecidable manual S 107 0.2212 103 -0.08 74
IV.EL6.EHZ. 2021-10-19T02:47:57.33 0.1 undecidable manual P 7 0.366 96 -0.05 95
IV.CSP1.EHZ. 2021-10-19T02:47:57.39 0.3 undecidable manual S 44 0.1754 110 -0.08 74
IV.NRCA.HHZ. 2021-10-19T02:47:56.50 0.3 undecidable manual S 157 0.1439 117 -0.12 74
IV.MML1.EHZ. 2021-10-19T02:47:56.73 0.3 undecidable manual S 342 0.1556 114 -0.19 72
IV.SNTG.HHZ. 2021-10-19T02:47:56.19 0.1 undecidable manual P 346 0.2977 98 -0.02 97
IV.MC2.EHZ. 2021-10-19T02:47:56.17 0.3 undecidable manual S 116 0.1232 123 0.08 74
IV.ASSB.HHZ. 2021-10-19T02:47:55.90 0.1 undecidable manual P 286 0.2878 99 -0.15 95
IV.CESI.HHZ. 2021-10-19T02:47:55.64 0.3 undecidable manual S 292 0.1052 130 -0.02 75
IV.CSP1.EHZ. 2021-10-19T02:47:54.17 0.1 negative manual P 44 0.1754 110 0 100
IV.MMO1.EHZ. 2021-10-19T02:47:54.88 0.1 undecidable manual P 107 0.2212 103 -0.05 98
IV.CESI.HHZ. 2021-10-19T02:47:53.21 0.1 positive manual P 292 0.1052 130 0.08 100
IV.MC2.EHZ. 2021-10-19T02:47:53.62 0.6 undecidable manual P 116 0.1232 123 0.24 48
IV.NRCA.HHZ. 2021-10-19T02:47:53.68 0.1 positive manual P 157 0.1439 117 0 100
IV.MML1.EHZ. 2021-10-19T02:47:53.80 0.1 undecidable manual P 342 0.1556 114 -0.06 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.2 0.000138 0.28 AML other m 2021-10-19T02:47:55.90
IV.CESI.HHN. ML:1.4 0.0002235 0.12 AML other m 2021-10-19T02:47:55.84
IV.NRCA.HHN. ML:0.9 6.38E-5 0.16 AML other m 2021-10-19T02:47:56.70
IV.MML1.EHE. ML:0.7 3.95E-5 0.16 AML other m 2021-10-19T02:47:56.99
IV.NRCA.HHE. ML:0.8 5.05E-5 0.1 AML other m 2021-10-19T02:47:57.18
IV.CSP1.EHN. ML:1.3 0.00013835 0.2 AML other m 2021-10-19T02:47:57.86
IV.MML1.EHN. ML:0.8 4.88E-5 1.32 AML other m 2021-10-19T02:47:57.12
IV.CSP1.EHE. ML:1.3 0.0001275 0.58 AML other m 2021-10-19T02:47:58.91
IV.ASSB.HHN. ML:0.8 2.48E-5 1.44 AML other m 2021-10-19T02:48:01.87
IV.ASSB.HHE. ML:0.7 2.0E-5 1.26 AML other m 2021-10-19T02:48:01.95
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download