Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 23-09-2021 and time 23:53:44 (Italy) in region 4 km S Castelraimondo (MC)

A magnitude ML 0.9 earthquake occured in region: 4 km S Castelraimondo (MC), on

  • 23-09-2021 21:53:44 (UTC)
  • 23-09-2021 23:53:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1740, 13.0550 at 13 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
Castelraimondo MC 4 4587 4587
Camerino MC 4 6974 11561
Pioraco MC 6 1134 12695
Gagliole MC 8 620 13315
Sefro MC 9 422 13737
Matelica MC 10 9981 23718
Fiuminata MC 10 1402 25120
Muccia MC 10 915 26035
Serrapetrona MC 11 966 27001
San Severino Marche MC 12 12726 39727
Esanatoglia MC 12 2034 41761
Pievebovigliana MC 13 866 42627
Serravalle di Chienti MC 14 1070 43697
Pieve Torina MC 14 1458 45155
Caldarola MC 15 1823 46978
Belforte del Chienti MC 15 1886 48864
Fiordimonte MC 15 202 49066
Fiastra MC 17 559 49625
Cerreto d'Esi AN 17 3817 53442
Camporotondo di Fiastrone MC 18 563 54005
Cessapalombo MC 18 512 54517
Acquacanina MC 19 121 54638
Tolentino MC 19 20069 74707

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NE of Foligno (57155 inhabitants)
55 Km E of Perugia (166134 inhabitants)
62 Km SW of Ancona (100861 inhabitants)
75 Km S of Fano (60888 inhabitants)
76 Km NE of Terni (111501 inhabitants)
78 Km NW of Teramo (54892 inhabitants)
83 Km S of Pesaro (94582 inhabitants)
96 Km NW of L'Aquila (69753 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 0.9 2021-09-23
21:53:44		 43.1735 13.0548 13 2021-09-23
22:01:37		 Sala Sismica INGV-Roma 95799271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-23 21:53:44 ± 0.05
Latitude 43.1735 ± 0.0018
Longitude 13.0548 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95799271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 288
Semi-minor axis of confidence ellipse (meter) 100
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 284
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 27
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41908
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 14
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 95799271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-23 22:01:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHZ. 2021-09-23T21:53:59.71 0.3 undecidable manual S 325 46.5201 93 0.19 69
IV.ARVD.HHZ. 2021-09-23T21:53:57.19 0.6 undecidable manual S 346 37.1295 94 0.16 47
IV.ARRO.EHZ. 2021-09-23T21:53:57.31 3.0 positive manual P 0.17 0
IV.NRCA.HHZ. 2021-09-23T21:53:57.29 0.3 undecidable manual S 173 38.0286 94 0.04 71
IV.SSFR.HHZ. 2021-09-23T21:53:57.17 0.6 undecidable manual S 323 36.5412 94 0.31 45
IV.MMO1.EHZ. 2021-09-23T21:53:57.24 0.6 undecidable manual S 144 37.5291 94 0.11 47
IV.ATCC.EHZ. 2021-09-23T21:53:56.30 0.6 undecidable manual S 272 33.5442 95 0.22 46
IV.ASSB.HHZ. 2021-09-23T21:53:56.37 0.3 undecidable manual S 246 35.2425 95 -0.14 71
IV.FRON.EHZ. 2021-09-23T21:53:53.12 1.0 negative manual P 325 46.5201 93 -0.11 23
IV.CESI.HHZ. 2021-09-23T21:53:53.10 0.6 undecidable manual S 213 22.2555 101 0.01 49
IV.CING.HHZ. 2021-09-23T21:53:53.83 0.6 undecidable manual S 27 25.1526 98 -0.01 49
IV.MF5.EHZ. 2021-09-23T21:53:52.84 1.0 positive manual P 122 38.7279 94 0.81 19
IV.MMO1.EHZ. 2021-09-23T21:53:51.93 1.0 negative manual P 144 37.5291 94 0.08 24
IV.ASSB.HHZ. 2021-09-23T21:53:51.33 0.3 negative manual P 246 35.2425 95 -0.16 70
IV.ARVD.HHZ. 2021-09-23T21:53:51.62 0.6 negative manual P 346 37.1295 94 -0.17 47
IV.FDMO.HHZ. 2021-09-23T21:53:51.28 0.6 undecidable manual S 170 15.3735 113 -0.04 50
IV.NRCA.HHZ. 2021-09-23T21:53:51.76 0.1 negative manual P 173 38.0286 94 -0.16 94
IV.EL6.EHZ. 2021-09-23T21:53:51.77 0.6 undecidable manual S 12 17.6712 107 -0.12 48
IV.SSFR.HHZ. 2021-09-23T21:53:51.78 0.3 positive manual P 323 36.5412 94 0.09 71
IV.ATCC.EHZ. 2021-09-23T21:53:51.21 0.6 undecidable manual P 272 33.5442 95 -0.03 48
IV.MML1.EHZ. 2021-09-23T21:53:50.02 0.6 undecidable manual S 225 9.4794 133 0.04 50
IV.SNTG.HHZ. 2021-09-23T21:53:50.54 0.6 undecidable manual S 314 12.9759 120 -0.19 48
IV.CESI.HHZ. 2021-09-23T21:53:49.48 0.1 positive manual P 213 22.2555 101 -0.04 99
IV.CING.HHZ. 2021-09-23T21:53:49.86 0.1 negative manual P 27 25.1526 98 -0.09 97
IV.EL6.EHZ. 2021-09-23T21:53:48.77 0.1 negative manual P 12 17.6712 107 -0.05 98
IV.SNTG.HHZ. 2021-09-23T21:53:48.04 0.6 negative manual P 314 12.9759 120 -0.11 49
IV.FDMO.HHZ. 2021-09-23T21:53:48.41 0.3 undecidable manual P 170 15.3735 113 -0.09 74
IV.MML1.EHZ. 2021-09-23T21:53:47.80 0.1 positive manual P 225 9.4794 133 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.EHE. ML:1.0 0.00011405 0.18 AML other m 2021-09-23T21:53:50.24
IV.MML1.EHN. ML:1.1 0.00012605 0.2 AML other m 2021-09-23T21:53:50.24
IV.SNTG.HHE. ML:0.7 0.00004465 1.48 AML other m 2021-09-23T21:53:51.77
IV.SNTG.HHN. ML:0.7 0.00004605 1.28 AML other m 2021-09-23T21:53:51.14
IV.FDMO.HHN. ML:0.7 0.000039349999999999994 0.2 AML other m 2021-09-23T21:53:51.68
IV.FDMO.HHE. ML:0.6 0.00003125 0.58 AML other m 2021-09-23T21:53:51.74
IV.CESI.HHN. ML:1.0 0.00005824999999999999 0.2 AML other m 2021-09-23T21:53:53.28
IV.CESI.HHE. ML:1.0 0.00006055 0.24 AML other m 2021-09-23T21:53:53.43
IV.CING.HHN. ML:0.9 0.00004115 1.58 AML other m 2021-09-23T21:53:54.11
IV.CING.HHE. ML:0.9 0.000046700000000000003 0.12 AML other m 2021-09-23T21:53:54.36
IV.ASSB.HHN. ML:0.8 0.00002525 1.38 AML other m 2021-09-23T21:53:57.13
IV.SSFR.HHN. ML:1.2 0.000052900000000000005 0.26 AML other m 2021-09-23T21:53:57.56
IV.ARVD.HHE. ML:1.0 0.000033 0.14 AML other m 2021-09-23T21:53:57.43
IV.SSFR.HHE. ML:1.2 0.000060700000000000005 0.24 AML other m 2021-09-23T21:53:57.56
IV.ARVD.HHN. ML:0.7 0.00001775 0.14 AML other m 2021-09-23T21:53:57.63
IV.NRCA.HHE. ML:1.0 0.00004105 0.9 AML other m 2021-09-23T21:53:58.82
IV.NRCA.HHN. ML:1.0 0.000037250000000000004 0.48 AML other m 2021-09-23T21:53:58.53
IV.ASSB.HHE. ML:0.8 0.000022599999999999997 1.18 AML other m 2021-09-23T21:53:58.91
IV.FRON.EHN. ML:1.0 0.0000237 0.96 AML other m 2021-09-23T21:54:01.89
IV.FRON.EHE. ML:0.7 0.00001695 0.34 AML other m 2021-09-23T21:54:01.61
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