Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.5 on date 26-02-2021 and time 08:47:38 (UTC) in region 5 km E Camerino (MC)

A magnitude ML 1.5 (quarry blast) earthquake occured in region: 5 km E Camerino (MC), on

  • 26-02-2021 08:47:38 (UTC)
  • 26-02-2021 09:47:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.14, 13.13 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Event type: quarry blast.

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
Camerino MC 5 6974 6974
Serrapetrona MC 6 966 7940
Caldarola MC 8 1823 9763
Belforte del Chienti MC 9 1886 11649
Castelraimondo MC 9 4587 16236
Muccia MC 10 915 17151
Pievebovigliana MC 10 866 18017
San Severino Marche MC 10 12726 30743
Camporotondo di Fiastrone MC 11 563 31306
Cessapalombo MC 11 512 31818
Gagliole MC 12 620 32438
Fiordimonte MC 12 202 32640
Pioraco MC 12 1134 33774
Fiastra MC 12 559 34333
Pieve Torina MC 13 1458 35791
Acquacanina MC 13 121 35912
Sefro MC 15 422 36334
Tolentino MC 15 20069 56403
Matelica MC 16 9981 66384
San Ginesio MC 16 3498 69882
Serravalle di Chienti MC 16 1070 70952
Fiuminata MC 17 1402 72354
Bolognola MC 18 142 72496
Sarnano MC 19 3264 75760
Colmurano MC 19 1263 77023
Esanatoglia MC 19 2034 79057
Gualdo MC 19 815 79872
Ripe San Ginesio MC 20 852 80724
Monte Cavallo MC 20 145 80869

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NE of Foligno (57155 inhabitants)
60 Km E of Perugia (166134 inhabitants)
61 Km SW of Ancona (100861 inhabitants)
72 Km NW of Teramo (54892 inhabitants)
76 Km NE of Terni (111501 inhabitants)
78 Km S of Fano (60888 inhabitants)
87 Km S of Pesaro (94582 inhabitants)
91 Km N of L'Aquila (69753 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 1.5 2021-02-26
08:47:38		 43.14 13.13 9 2021-02-26
08:58:21		 Sala Sismica INGV-Roma 87497061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-26 08:47:38 ± 0.11
Latitude 43.14 ± 0.01
Longitude 13.13 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type quarry blast
Origin ID 87497061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 634
Semi-minor axis of confidence ellipse (meter) 443
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 630
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.04856
Epicentral distance of station farthest from the epicenter (degree) 0.37861
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 87497061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-26 08:58:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-02-26T08:47:52.47 0.6 undecidable manual S 339 0.3786 50 0.04 64
IV.MMO1.EHZ. 2021-02-26T08:47:49.65 0.6 undecidable manual S 149 0.2842 50 0.02 66
IV.MC2.EHZ. 2021-02-26T08:47:48.68 0.6 undecidable manual S 169 0.2365 110 0.61 57
IV.CING.HNZ. 2021-02-26T08:47:48.49 0.6 undecidable manual S 12 0.2365 110 0.43 61
IV.CESI.HHZ. 2021-02-26T08:47:48.26 0.6 undecidable manual S 230 0.2149 112 0.99 49
IV.SAP2.EHZ. 2021-02-26T08:47:47.60 0.6 undecidable manual S 103 0.2032 113 0.73 55
IV.GUMA.HHZ. 2021-02-26T08:47:46.11 0.6 undecidable manual S 118 0.1718 116 0.35 63
IV.EL6.EHZ. 2021-02-26T08:47:46.53 0.6 undecidable manual S 354 0.1862 115 0.27 64
IV.ARVD.HHZ. 2021-02-26T08:47:46.44 0.3 undecidable manual P 339 0.3786 50 -0.05 96
IV.MF5.EHZ. 2021-02-26T08:47:45.10 0.3 undecidable manual P 123 0.2878 50 0.16 96
IV.MMO1.EHZ. 2021-02-26T08:47:44.54 0.3 undecidable manual P 149 0.2842 50 -0.34 92
IV.SAP2.EHZ. 2021-02-26T08:47:43.46 0.3 undecidable manual P 103 0.2032 113 0.18 97
IV.MC2.EHZ. 2021-02-26T08:47:43.14 0.3 undecidable manual P 169 0.2365 110 -0.83 78
IV.CING.HNZ. 2021-02-26T08:47:43.86 0.3 undecidable manual P 12 0.2365 110 -0.11 98
IV.CESI.HHZ. 2021-02-26T08:47:43.89 0.3 undecidable manual P 230 0.2149 112 0.38 93
IV.MML1.EHZ. 2021-02-26T08:47:43.77 0.6 undecidable manual S 255 0.1178 126 -0.22 65
IV.FDMO.HHZ. 2021-02-26T08:47:43.76 0.6 undecidable manual S 196 0.1115 127 -0.03 68
IV.MML1.EHZ. 2021-02-26T08:47:42.02 0.3 undecidable manual P 255 0.1178 126 0.4 94
IV.EL6.EHZ. 2021-02-26T08:47:42.89 0.3 undecidable manual P 354 0.1862 115 -0.04 100
IV.GUMA.HHZ. 2021-02-26T08:47:42.72 0.3 undecidable manual P 118 0.1718 116 0.08 99
IV.FDMO.HHZ. 2021-02-26T08:47:40.65 0.3 undecidable manual P 196 0.1115 127 -0.85 80
IV.MDAR.HNZ. 2021-02-26T08:47:40.18 0.3 undecidable manual P 12 0.0495 150 -0.39 95
IV.PF6.EHZ. 2021-02-26T08:47:39.69 0.3 undecidable manual P 97 0.0486 150 -0.87 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EL6.EHN. ML:1.6 0.0002665744 0.5184 AML other m 2021-02-26T08:47:49.20
IV.GUMA.HHN. ML:1.7 0.0004155 1.64 AML other m 2021-02-26T08:47:48.95
IV.EL6.EHE. ML:1.5 0.000237 0.32 AML other m 2021-02-26T08:47:48.81
IV.CESI.HHN. ML:1.2 9.183655E-5 0.32 AML other m 2021-02-26T08:47:48.89
IV.GUMA.HHE. ML:1.7 0.00036224615 0.4608 AML other m 2021-02-26T08:47:50.22
IV.CESI.HHE. ML:1.1 8.52E-5 0.36 AML other m 2021-02-26T08:47:50.75
IV.MF5.EHE. ML:1.3 8.83E-5 1.38 AML other m 2021-02-26T08:47:53.14
IV.MF5.EHN. ML:1.4 0.000109 1.26 AML other m 2021-02-26T08:47:54.96
IV.GUMA.HNE. ML:1.6 0.0003000752 0.4288 AML other m 2021-02-26T08:47:48.15
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download