Earthquake with magnitude of ML 1.2 on date 30-09-2021 and time 11:12:34 (Italy) in region 4 km E San Severino Marche (MC)

A magnitude ML 1.2 earthquake occured in region: 4 km E San Severino Marche (MC), on

  • 30-09-2021 09:12:34 (UTC)
  • 30-09-2021 11:12:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2320, 13.2290 at 19 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
San Severino Marche MC 4 12726 12726
Tolentino MC 5 20069 32795
Serrapetrona MC 7 966 33761
Belforte del Chienti MC 8 1886 35647
Caldarola MC 10 1823 37470
Pollenza MC 11 6618 44088
Treia MC 11 9403 53491
Camporotondo di Fiastrone MC 12 563 54054
Urbisaglia MC 13 2628 56682
Colmurano MC 13 1263 57945
Gagliole MC 13 620 58565
Cessapalombo MC 14 512 59077
Castelraimondo MC 14 4587 63664
Ripe San Ginesio MC 15 852 64516
San Ginesio MC 16 3498 68014
Cingoli MC 16 10352 78366
Camerino MC 17 6974 85340
Loro Piceno MC 17 2401 87741
Appignano MC 18 4213 91954
Matelica MC 18 9981 101935
Petriolo MC 19 1998 103933
Apiro MC 20 2280 106213
Macerata MC 20 42473 148686
Poggio San Vicino MC 20 246 148932
Sant'Angelo in Pontano MC 20 1436 150368

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km SW of Ancona (100861 inhabitants)
52 Km NE of Foligno (57155 inhabitants)
70 Km E of Perugia (166134 inhabitants)
70 Km S of Fano (60888 inhabitants)
75 Km NW of Teramo (54892 inhabitants)
80 Km SE of Pesaro (94582 inhabitants)
88 Km NE of Terni (111501 inhabitants)
99 Km N of L'Aquila (69753 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
Bulletin
Rev1000
ML 1.2 2021-09-30
09:12:34
43.232 13.2287 19 2022-03-30
13:04:10
Bollettino Sismico Italiano INGV 96437301
Reviewed
Rev100
ML 1.3 2021-09-30
09:12:34
43.2308 13.2157 19 2021-09-30
09:22:07
Sala Sismica INGV-Roma 96057721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-30 09:12:34 ± 0.1
Latitude 43.2320 ± 0.0036
Longitude 13.2287 ± 0.0049
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96437301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 443
Semi-minor axis of confidence ellipse (meter) 128
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41818
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 96437301
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-11 14:47:30

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 96057721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-30 09:22:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.QLNO.HHZ. 2021-09-30T09:14:15.64 3.0 undecidable manual Sn -3.51 0
AC.KBN.HHZ. 2021-09-30T09:14:15.18 3.0 undecidable manual Pn 5.12 0
IV.ISPIC.HNZ. 2021-09-30T09:14:10.61 3.0 positive manual Pn -3.14 0
IT.PNAL.HNZ. 2021-09-30T09:14:09.07 3.0 undecidable manual Sg 4.64 0
SL.KOGS.BHZ. 2021-09-30T09:13:43.02 3.0 negative manual Pg 4.81 0
IV.PTRJ.HHZ. 2021-09-30T09:13:43.19 3.0 undecidable manual Sg 2.11 0
IV.ORI.HHZ. 2021-09-30T09:13:43.15 3.0 undecidable manual Pg 4.25 0
IV.CTI.HHZ. 2021-09-30T09:13:27.19 3.0 undecidable manual Pg 1.25 0
IV.NDIM.HNZ. 2021-09-30T09:13:21.80 3.0 positive manual Pg 5.6 0
OT.OT17.EHZ. 2021-09-30T09:13:13.51 3.0 negative manual Pn -1.14 0
IV.ASQU.HHZ. 2021-09-30T09:13:00.83 3.0 negative manual P 0.98 0
IV.PE3.EHZ. 2021-09-30T09:12:49.89 3.0 negative manual P -1.52 0
IV.NRCA.HHZ. 2021-09-30T09:12:49.32 0.3 undecidable manual S 192 0.4065 104 0.04 72
IV.MC2.EHZ. 2021-09-30T09:12:47.08 0.3 undecidable manual S 185 0.3220 109 0.22 71
IV.CESI.HHE. 2021-09-30T09:12:47.41 0.6 undecidable manual S 226 0.3274 109 0.38 46
IV.MNTT.EHZ. 2021-09-30T09:12:46.85 0.3 undecidable manual S 122 0.3166 109 0.13 71
IV.MF5.EHZ. 2021-09-30T09:12:46.23 0.6 undecidable manual S 145 0.2968 111 0.07 48
IV.MML1.HNE. 2021-09-30T09:12:44.49 0.6 undecidable manual S 238 0.2212 119 0.34 47
IV.SNTG.HHE. 2021-09-30T09:12:44.08 0.6 undecidable manual S 276 0.2113 121 0.21 48
IV.SAP2.EHE. 2021-09-30T09:12:43.68 0.6 undecidable manual S 137 0.1835 126 0.48 45
IV.FDMO.HHZ. 2021-09-30T09:12:43.96 0.3 undecidable manual S 208 0.2212 120 -0.17 71
IV.EL6.EHZ. 2021-09-30T09:12:42.25 0.3 undecidable manual S 317 0.1340 136 0.17 73
IV.CING.HHZ. 2021-09-30T09:12:42.27 0.3 undecidable manual S 350 0.1457 134 -0.05 76
IV.NRCA.HHZ. 2021-09-30T09:12:42.81 0.3 undecidable manual P 192 0.4065 104 -0.22 68
IV.CSP1.EHZ. 2021-09-30T09:12:42.12 0.3 undecidable manual S 187 0.1412 135 -0.11 74
IV.AOI.HHE. 2021-09-30T09:12:42.99 0.6 undecidable manual P 40 0.4182 104 -0.22 47
IV.MF5.EHZ. 2021-09-30T09:12:41.38 0.3 undecidable manual P 145 0.2968 111 0.15 71
IV.CESI.HHE. 2021-09-30T09:12:41.79 0.1 undecidable manual P 226 0.3274 109 0.06 97
IV.MC2.EHZ. 2021-09-30T09:12:41.54 0.3 undecidable manual P 185 0.3220 109 -0.09 72
IV.PF6.EHN. 2021-09-30T09:12:41.02 0.6 undecidable manual S 195 0.0971 146 -0.38 47
IV.MNTT.EHZ. 2021-09-30T09:12:41.82 0.1 undecidable manual P 122 0.3166 109 0.27 92
IV.MML1.HNE. 2021-09-30T09:12:40.02 0.1 undecidable manual P 238 0.2212 119 -0.04 98
IV.FDMO.HHZ. 2021-09-30T09:12:40.17 0.3 undecidable manual P 208 0.2212 120 0.12 73
IV.SNTG.HHE. 2021-09-30T09:12:39.88 0.1 undecidable manual P 276 0.2113 121 -0.03 99
IV.SAP2.EHE. 2021-09-30T09:12:39.10 0.1 undecidable manual P 137 0.1835 126 -0.41 93
IV.CING.HHZ. 2021-09-30T09:12:39.03 0.1 negative manual P 350 0.1457 134 0.02 100
IV.CSP1.EHZ. 2021-09-30T09:12:38.81 0.1 undecidable manual P 187 0.1412 135 -0.15 98
IV.EL6.EHZ. 2021-09-30T09:12:38.95 0.3 undecidable manual P 317 0.1340 136 0.08 75
IV.PF6.EHN. 2021-09-30T09:12:38.23 0.1 undecidable manual P 195 0.0971 146 -0.25 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHE. ML:1.6 0.000261 0.48 AML other m 2021-09-30T09:12:42.57
IV.CING.HHN. ML:1.3 0.0001225 0.26 AML other m 2021-09-30T09:12:42.60
IV.CSP1.EHN. ML:1.7 0.00032 0.68 AML other m 2021-09-30T09:12:42.85
IV.CING.HHE. ML:1.1 0.0000807 0.64 AML other m 2021-09-30T09:12:43.79
IV.FDMO.HHE. ML:1.3 0.00010125000000000001 0.14 AML other m 2021-09-30T09:12:44.17
IV.FDMO.HHN. ML:1.0 0.00005215 0.12 AML other m 2021-09-30T09:12:44.23
IV.NRCA.HHE. ML:1.3 0.000052000000000000004 1.1 AML other m 2021-09-30T09:12:51.75
IV.NRCA.HHN. ML:1.2 0.000038400000000000005 0.12 AML other m 2021-09-30T09:12:52.64
IV.ORI.HHE. ML:3.7 0.00020950000000000002 0.08 AML other m 2021-09-30T09:13:56.05
IV.ORI.HHN. ML:3.5 0.000129 0.08 AML other m 2021-09-30T09:13:56.10
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, http://terremoti.ingv.it/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