Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 31-03-2023 and time 03:05:11 (UTC) in region 3 km E Serravalle di Chienti (MC)

A magnitude ML 1.4 earthquake occured in region: 3 km E Serravalle di Chienti (MC), on

  • 31-03-2023 03:05:11 (UTC)
  • 31-03-2023 05:05:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0660, 12.9870 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.

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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 3 1070 1070
Muccia MC 5 915 1985
Pieve Torina MC 6 1458 3443
Pievebovigliana MC 8 866 4309
Monte Cavallo MC 8 145 4454
Fiordimonte MC 9 202 4656
Sefro MC 10 422 5078
Camerino MC 10 6974 12052
Pioraco MC 13 1134 13186
Fiastra MC 14 559 13745
Fiuminata MC 14 1402 15147
Acquacanina MC 16 121 15268
Nocera Umbra PG 17 5839 21107
Castelraimondo MC 17 4587 25694
Visso MC 17 1107 26801
Ussita MC 18 444 27245
Valtopina PG 19 1398 28643

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km E of Foligno (57155 inhabitants)
49 Km E of Perugia (166134 inhabitants)
63 Km NE of Terni (111501 inhabitants)
74 Km NW of Teramo (54892 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
86 Km NW of L'Aquila (69753 inhabitants)
87 Km S of Fano (60888 inhabitants)
94 Km S of Pesaro (94582 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.4 2023-03-31
03:05:11		 43.0663 12.9868 11 2023-03-31
03:11:43		 Sala Sismica INGV-Roma 115901551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-31 03:05:11 ± 0.06
Latitude 43.0663 ± 0.0027
Longitude 12.9868 ± 0.0049
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 115901551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 386
Semi-minor axis of confidence ellipse (meter) 244
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 65
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.61873
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 20
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 115901551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-31 03:11:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2023-03-31T03:05:31.21 0.3 undecidable manual S 325 0.5729 50 0.58 62
IV.ARRO.EHZ. 2023-03-31T03:05:29.15 3.0 undecidable manual S -0.35 0
IV.FRON.EHZ. 2023-03-31T03:05:28.42 0.6 undecidable manual S 337 0.4892 50 0.26 46
IV.ARVD.HHZ. 2023-03-31T03:05:26.71 0.6 undecidable manual S 356 0.4326 50 0.23 47
IV.GAVE.EHZ. 2023-03-31T03:05:25.07 0.3 undecidable manual S 190 0.3804 50 0.15 72
IV.MURB.HNZ. 2023-03-31T03:05:25.92 0.3 undecidable manual S 300 0.3903 50 0.7 61
IV.MF5.EHZ. 2023-03-31T03:05:25.00 0.6 undecidable manual S 103 0.3543 50 0.84 39
IV.SSFR.HHZ. 2023-03-31T03:05:25.68 0.3 undecidable manual S 338 0.3984 50 0.21 71
IV.CING.HHZ. 2023-03-31T03:05:23.86 0.6 undecidable manual S 26 0.3444 50 0 50
IV.NARO.HHZ. 2023-03-31T03:05:22.85 0.1 undecidable manual P 332 0.6187 50 -0.31 88
IV.FOSV.EHZ. 2023-03-31T03:05:22.06 0.6 undecidable manual S 324 0.2815 50 0.06 50
IV.ATCC.EHZ. 2023-03-31T03:05:22.23 0.6 undecidable manual S 295 0.2797 50 0.29 47
IV.MMO1.EHZ. 2023-03-31T03:05:22.17 0.6 undecidable manual S 124 0.2995 50 -0.36 47
IV.PIEI.HHZ. 2023-03-31T03:05:22.24 1.0 negative manual P 325 0.5729 50 -0.13 23
IV.GUMA.HHZ. 2023-03-31T03:05:21.60 0.6 undecidable manual S 91 0.2545 50 0.4 47
IV.EL6.EHZ. 2023-03-31T03:05:21.67 0.6 undecidable manual S 18 0.2761 50 -0.16 49
IV.ASSB.HHZ. 2023-03-31T03:05:20.75 0.6 undecidable manual S 264 0.2410 50 -0.05 50
IV.NRCA.HHZ. 2023-03-31T03:05:20.74 0.6 undecidable manual S 158 0.2509 50 -0.35 47
IV.FRON.EHZ. 2023-03-31T03:05:20.65 0.1 undecidable manual P 337 0.4892 50 -0.3 91
IV.SSFR.HHZ. 2023-03-31T03:05:19.24 0.3 undecidable manual P 338 0.3984 50 -0.15 72
IV.SNTG.HHZ. 2023-03-31T03:05:19.09 0.6 undecidable manual S 350 0.1916 116 -0.23 49
IV.ARVD.HHZ. 2023-03-31T03:05:19.76 0.6 positive manual P 356 0.4326 50 -0.22 47
IV.MURB.HNZ. 2023-03-31T03:05:19.24 0.1 undecidable manual P 300 0.3903 50 -0.01 98
IV.CING.HHZ. 2023-03-31T03:05:18.23 0.1 undecidable manual P 26 0.3444 50 -0.23 95
IV.GAVE.EHZ. 2023-03-31T03:05:18.80 0.1 undecidable manual P 190 0.3804 50 -0.27 93
IV.MF5.EHZ. 2023-03-31T03:05:18.85 0.1 undecidable manual P 103 0.3543 50 0.22 95
IV.CSP1.EHZ. 2023-03-31T03:05:18.35 0.6 undecidable manual S 81 0.1610 121 0.05 51
IV.GUMA.HHZ. 2023-03-31T03:05:17.04 0.1 undecidable manual P 91 0.2545 50 0.12 99
IV.MMO1.EHZ. 2023-03-31T03:05:17.36 0.6 negative manual P 124 0.2995 50 -0.34 47
IV.EL6.EHZ. 2023-03-31T03:05:17.10 0.3 negative manual P 18 0.2761 50 -0.19 73
IV.FOSV.EHZ. 2023-03-31T03:05:17.22 0.1 negative manual P 324 0.2815 50 -0.17 97
IV.ATCC.EHZ. 2023-03-31T03:05:17.32 0.1 negative manual P 295 0.2797 50 -0.03 100
IV.FDMO.HHZ. 2023-03-31T03:05:16.08 0.6 undecidable manual S 112 0.0791 140 0.22 50
IV.ASSB.HHZ. 2023-03-31T03:05:16.56 0.1 positive manual P 264 0.2410 50 -0.13 99
IT.MTCL.HGZ. 2023-03-31T03:05:16.10 0.6 undecidable manual S 173 0.0728 143 0.39 48
IV.NRCA.HHZ. 2023-03-31T03:05:16.57 0.1 positive manual P 158 0.2509 50 -0.29 95
IV.CSP1.EHZ. 2023-03-31T03:05:15.31 1.0 undecidable manual P 81 0.1610 121 0.06 25
IV.SNTG.HHZ. 2023-03-31T03:05:15.63 0.1 undecidable manual P 350 0.1916 116 -0.21 98
IT.MTCL.HGZ. 2023-03-31T03:05:14.01 0.1 undecidable manual P 173 0.0728 143 0.26 99
IV.FDMO.HHZ. 2023-03-31T03:05:14.04 1.0 undecidable manual P 112 0.0791 140 0.2 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.2 0.0001835 0.2 AML other m 2023-03-31T03:05:16.34
IV.FDMO.HHN. ML:1.4 0.000328 0.14 AML other m 2023-03-31T03:05:16.37
IV.NRCA.HHN. ML:1.6 0.000209 0.86 AML other m 2023-03-31T03:05:20.92
IV.ASSB.HHE. ML:1.5 0.0001635 0.08 AML other m 2023-03-31T03:05:21.31
IV.ASSB.HHN. ML:1.4 0.00013550000000000001 0.58 AML other m 2023-03-31T03:05:21.59
IV.NRCA.HHE. ML:1.5 0.000148 1.26 AML other m 2023-03-31T03:05:21.34
IV.EL6.EHE. ML:1.8 0.000309 1.38 AML other m 2023-03-31T03:05:22.09
IV.EL6.EHN. ML:1.8 0.00028100000000000005 1.14 AML other m 2023-03-31T03:05:22.09
IV.MMO1.EHE. ML:1.2 0.00007695 0.5 AML other m 2023-03-31T03:05:22.73
IV.MMO1.EHN. ML:1.1 0.0000569 1.3 AML other m 2023-03-31T03:05:22.18
IV.ATCC.EHN. ML:1.3 0.0000878 1.12 AML other m 2023-03-31T03:05:22.39
IV.ATCC.EHE. ML:1.4 0.00011265 0.86 AML other m 2023-03-31T03:05:23.61
IV.GAVE.EHE. ML:1.4 0.00008094999999999999 0.36 AML other m 2023-03-31T03:05:25.78
IV.GAVE.EHN. ML:1.3 0.00006035 1.1 AML other m 2023-03-31T03:05:26.59
IV.SSFR.HHN. ML:1.4 0.00006785 1.12 AML other m 2023-03-31T03:05:26.17
IV.SSFR.HHE. ML:1.3 0.0000591 0.5 AML other m 2023-03-31T03:05:26.42
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download