Earthquake with magnitude of ML 0.4 on date 30-09-2021 and time 22:28:32 (Italy) in region 5 km NE Serravalle di Chienti (MC)

A magnitude ML 0.4 earthquake occured in region: 5 km NE Serravalle di Chienti (MC), on

  • 30-09-2021 20:28:32 (UTC)
  • 30-09-2021 22:28:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.102, 12.993 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
Serravalle di Chienti MC 5 1070 1070
Muccia MC 5 915 1985
Sefro MC 6 422 2407
Camerino MC 7 6974 9381
Pieve Torina MC 8 1458 10839
Pievebovigliana MC 9 866 11705
Pioraco MC 9 1134 12839
Fiordimonte MC 11 202 13041
Fiuminata MC 11 1402 14443
Monte Cavallo MC 12 145 14588
Castelraimondo MC 13 4587 19175
Fiastra MC 15 559 19734
Nocera Umbra PG 16 5839 25573
Gagliole MC 17 620 26193
Acquacanina MC 17 121 26314
Esanatoglia MC 17 2034 28348
Matelica MC 17 9981 38329
Serrapetrona MC 18 966 39295
Caldarola MC 20 1823 41118
Valtopina PG 20 1398 42516

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Foligno (57155 inhabitants)
49 Km E of Perugia (166134 inhabitants)
66 Km NE of Terni (111501 inhabitants)
71 Km SW of Ancona (100861 inhabitants)
76 Km NW of Teramo (54892 inhabitants)
83 Km S of Fano (60888 inhabitants)
90 Km NW of L'Aquila (69753 inhabitants)
90 Km S of Pesaro (94582 inhabitants)
99 Km E of Arezzo (99543 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 0.4 2021-09-30
20:28:32
43.1018 12.993 11 2021-09-30
20:40:50
Sala Sismica INGV-Roma 96077821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-30 20:28:32 ± 0.07
Latitude 43.1018 ± 0.0009
Longitude 12.9930 ± 0.0012
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96077821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 110
Semi-minor axis of confidence ellipse (meter) 58
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 70
Circular confidence region, given by single value of horizontal uncertainty (meter) 110
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.04
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.15738
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 96077821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-30 20:40:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-09-30T20:28:39.14 0.1 undecidable manual S 94 0.1547 121 0.06 98
IV.SNTG.HHZ. 2021-09-30T20:28:39.17 0.3 undecidable manual S 346 0.1574 121 0 75
IV.FDMO.HHZ. 2021-09-30T20:28:37.20 0.3 undecidable manual S 133 0.0953 135 -0.05 75
IV.CESI.HHZ. 2021-09-30T20:28:37.89 0.1 undecidable manual S 214 0.1169 129 0.02 100
IV.CSP1.EHZ. 2021-09-30T20:28:36.09 1.0 undecidable manual P 94 0.1547 121 -0.04 25
IV.SNTG.HHZ. 2021-09-30T20:28:36.18 0.1 undecidable manual P 346 0.1574 121 -0.01 99
IV.FDMO.HHZ. 2021-09-30T20:28:35.04 0.1 undecidable manual P 133 0.0953 135 -0.04 100
IV.CESI.HHZ. 2021-09-30T20:28:35.46 0.3 undecidable manual P 214 0.1169 129 0.03 75
IV.MML1.EHZ. 2021-09-30T20:28:34.58 3.0 negative manual P -0.01 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.EHE. ML:0.4 3.925E-5 1.08 AML other m 2021-09-30T20:28:36.57
IV.MML1.EHN. ML:0.4 5.24E-5 0.66 AML other m 2021-09-30T20:28:36.88
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