Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 21-04-2023 and time 01:05:33 (UTC) in region 5 km W Caldarola (MC)

A magnitude ML 1.2 earthquake occured in region: 5 km W Caldarola (MC), on

  • 21-04-2023 01:05:33 (UTC)
  • 21-04-2023 03:05:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1320, 13.1720 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.

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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
Caldarola MC 5 1823 1823
Serrapetrona MC 5 966 2789
Belforte del Chienti MC 7 1886 4675
Cessapalombo MC 8 512 5187
Camporotondo di Fiastrone MC 8 563 5750
Camerino MC 8 6974 12724
Pievebovigliana MC 10 866 13590
Fiastra MC 11 559 14149
San Severino Marche MC 11 12726 26875
Acquacanina MC 11 121 26996
Muccia MC 12 915 27911
San Ginesio MC 12 3498 31409
Fiordimonte MC 12 202 31611
Tolentino MC 13 20069 51680
Castelraimondo MC 13 4587 56267
Pieve Torina MC 14 1458 57725
Gagliole MC 15 620 58345
Sarnano MC 15 3264 61609
Gualdo MC 15 815 62424
Colmurano MC 16 1263 63687
Bolognola MC 16 142 63829
Pioraco MC 16 1134 64963
Ripe San Ginesio MC 16 852 65815
Sefro MC 18 422 66237
Urbisaglia MC 18 2628 68865
Sant'Angelo in Pontano MC 19 1436 70301
Serravalle di Chienti MC 19 1070 71371
Matelica MC 19 9981 81352

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
61 Km SW of Ancona (100861 inhabitants)
64 Km E of Perugia (166134 inhabitants)
68 Km NW of Teramo (54892 inhabitants)
77 Km NE of Terni (111501 inhabitants)
80 Km S of Fano (60888 inhabitants)
89 Km N of L'Aquila (69753 inhabitants)
89 Km S of Pesaro (94582 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 1.2 2023-04-21
01:05:33		 43.1317 13.1723 14 2023-04-21
01:11:19		 Sala Sismica INGV-Roma 116561571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-21 01:05:33 ± 0.08
Latitude 43.1317 ± 0.0036
Longitude 13.1723 ± 0.0062
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 116561571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 464
Semi-minor axis of confidence ellipse (meter) 189
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.31656
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 116561571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-21 01:11:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2023-04-21T01:06:23.93 3.0 undecidable manual Sg 3.69 0
IV.SMA1.EHZ. 2023-04-21T01:05:51.07 3.0 undecidable manual S -0.62 0
IV.FOSV.EHZ. 2023-04-21T01:05:46.37 3.0 undecidable manual S -0.14 0
IV.TERO.HHZ. 2023-04-21T01:05:44.79 3.0 negative manual P -0.14 0
IV.FRON.EHZ. 2023-04-21T01:05:43.59 3.0 negative manual P 0.14 0
IV.MMO1.EHZ. 2023-04-21T01:05:43.30 0.3 undecidable manual S 154 28.6491 101 -0.11 72
IV.SMA1.EHZ. 2023-04-21T01:05:43.06 3.0 positive manual P -0.33 0
IV.MF5.EHZ. 2023-04-21T01:05:43.86 0.3 undecidable manual S 124 28.2495 101 0.56 63
IV.MURB.HHZ. 2023-04-21T01:05:43.28 3.0 negative manual P 0.13 0
IV.CING.HHZ. 2023-04-21T01:05:42.86 0.3 undecidable manual S 4 27.1506 102 -0.14 72
IV.CESI.HHZ. 2023-04-21T01:05:42.98 0.3 undecidable manual S 237 25.8519 103 0.31 70
IV.EL6.EHZ. 2023-04-21T01:05:42.38 0.3 undecidable manual S 345 22.6551 106 0.54 65
IV.SNTG.HHZ. 2023-04-21T01:05:42.20 0.3 undecidable manual S 306 23.1546 105 0.22 71
IV.SSFR.HHZ. 2023-04-21T01:05:42.43 3.0 undecidable manual P 0.58 0
IV.ARVD.HHZ. 2023-04-21T01:05:41.48 3.0 negative manual P -0.13 0
IV.ASSB.HHZ. 2023-04-21T01:05:41.02 3.0 negative manual P -0.18 0
IV.GUMA.HHZ. 2023-04-21T01:05:40.33 0.3 undecidable manual S 120 15.2736 119 0.32 70
IV.MNTT.EHZ. 2023-04-21T01:05:40.30 0.6 positive manual P 103 35.1426 98 0.21 46
IV.MML1.EHZ. 2023-04-21T01:05:40.68 0.3 undecidable manual S 263 16.3725 117 0.41 70
IV.SAP2.EHE. 2023-04-21T01:05:40.84 0.6 undecidable manual S 102 18.7701 112 -0.02 49
IV.MF5.EHZ. 2023-04-21T01:05:39.01 0.3 negative manual P 124 28.2495 101 -0.03 73
IV.FDMO.HHN. 2023-04-21T01:05:39.45 0.6 undecidable manual S 213 12.5763 127 0.03 49
IV.NRCA.HHZ. 2023-04-21T01:05:39.42 0.6 positive manual P 188 33.4443 98 -0.4 44
IV.MDAR.HNE. 2023-04-21T01:05:38.21 0.6 undecidable manual S 341 7.1928 146 -0.21 48
IV.SNTG.HHZ. 2023-04-21T01:05:38.30 0.6 undecidable manual P 306 23.1546 105 0.02 49
IV.CING.HHZ. 2023-04-21T01:05:38.49 0.1 positive manual P 4 27.1506 102 -0.38 91
IV.CSP1.EHE. 2023-04-21T01:05:38.25 0.6 undecidable manual S 149 5.1948 155 0.09 50
IV.CESI.HHZ. 2023-04-21T01:05:38.57 0.1 positive manual P 237 25.8519 103 -0.11 95
IV.EL6.EHZ. 2023-04-21T01:05:38.22 0.3 undecidable manual P 345 22.6551 106 0.02 73
IV.MMO1.EHZ. 2023-04-21T01:05:38.63 0.6 positive manual P 154 28.6491 101 -0.47 44
IV.SAP2.EHE. 2023-04-21T01:05:37.53 0.6 undecidable manual P 102 18.7701 112 -0.1 49
IV.GUMA.HHZ. 2023-04-21T01:05:37.08 0.1 negative manual P 120 15.2736 119 -0.06 99
IV.PF6.EHZ. 2023-04-21T01:05:37.87 0.6 undecidable manual S 69 1.8981 171 -0.03 50
IV.MML1.EHZ. 2023-04-21T01:05:37.29 0.1 positive manual P 263 16.3725 117 0 99
IV.MDAR.HNE. 2023-04-21T01:05:36.11 0.3 undecidable manual P 341 7.1928 146 -0.11 74
IV.FDMO.HHN. 2023-04-21T01:05:36.68 0.1 undecidable manual P 213 12.5763 127 -0.12 97
IV.CSP1.EHE. 2023-04-21T01:05:36.01 0.1 undecidable manual P 149 5.1948 155 -0.06 100
IV.PF6.EHZ. 2023-04-21T01:05:35.72 0.1 undecidable manual P 69 1.8981 171 -0.2 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GUMA.HHE. ML:1.8 0.00046750000000000003 0.22 AML other m 2023-04-21T01:05:40.52
IV.MML1.EHN. ML:1.2 0.0001102 0.34 AML other m 2023-04-21T01:05:40.86
IV.MML1.EHE. ML:1.3 0.000161 0.18 AML other m 2023-04-21T01:05:40.84
IV.GUMA.HHN. ML:1.5 0.000254 0.28 AML other m 2023-04-21T01:05:41.90
IV.SNTG.HHN. ML:0.8 0.0000421 0.42 AML other m 2023-04-21T01:05:42.38
IV.SNTG.HHE. ML:0.9 0.00004485 1.26 AML other m 2023-04-21T01:05:42.34
IV.CESI.HHN. ML:1.2 0.00007555000000000001 0.2 AML other m 2023-04-21T01:05:43.13
IV.CESI.HHE. ML:1.1 0.00007225000000000001 0.68 AML other m 2023-04-21T01:05:43.07
IV.MMO1.EHE. ML:1.3 0.0000946 0.32 AML other m 2023-04-21T01:05:43.40
IV.CING.HHE. ML:1.2 0.00007455000000000001 1.28 AML other m 2023-04-21T01:05:43.31
IV.CING.HHN. ML:1.0 0.00005355 0.6 AML other m 2023-04-21T01:05:43.37
IV.MMO1.EHN. ML:1.3 0.0001025 0.34 AML other m 2023-04-21T01:05:43.70
IV.NRCA.HHE. ML:1.4 0.0001111 0.86 AML other m 2023-04-21T01:05:46.14
IV.NRCA.HHN. ML:1.4 0.00010095 0.1 AML other m 2023-04-21T01:05:46.20
IV.FOSV.EHE. ML:1.0 0.000038900000000000004 0.8 AML other m 2023-04-21T01:05:46.84
IV.FOSV.EHN. ML:1.5 0.00011525 0.24 AML other m 2023-04-21T01:05:46.73
IV.ASSB.HHE. ML:1.2 0.0000544 0.8 AML other m 2023-04-21T01:05:47.31
IV.ASSB.HHN. ML:1.2 0.00005525 1.14 AML other m 2023-04-21T01:05:47.86
IV.ARVD.HHE. ML:0.8 0.000018549999999999997 0.56 AML other m 2023-04-21T01:05:48.13
IV.SSFR.HHE. ML:1.3 0.0000541 1.28 AML other m 2023-04-21T01:05:49.85
IV.ARVD.HHN. ML:0.7 0.000014235000000000002 1.14 AML other m 2023-04-21T01:05:50.14
IV.SMA1.EHE. ML:1.2 0.00003515 1.16 AML other m 2023-04-21T01:05:51.64
IV.MURB.HHE. ML:1.5 0.0000693 0.26 AML other m 2023-04-21T01:05:52.16
IV.SSFR.HHN. ML:1.2 0.00004655 0.16 AML other m 2023-04-21T01:05:52.43
IV.MURB.HHN. ML:1.2 0.00004165000000000001 0.22 AML other m 2023-04-21T01:05:52.66
IV.SMA1.EHN. ML:1.2 0.000027750000000000004 1.24 AML other m 2023-04-21T01:05:54.83
IV.TERO.HHN. ML:1.2 0.0000292 0.48 AML other m 2023-04-21T01:05:54.82
IV.TERO.HHE. ML:1.1 0.0000206 0.54 AML other m 2023-04-21T01:05:56.47
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