Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 0.8 on date 02-05-2021 and time 16:14:06 (UTC) in region 8 km N San Severino Marche (MC)

A magnitude ML 0.8 (quarry blast) earthquake occured in region: 8 km N San Severino Marche (MC), on

  • 02-05-2021 16:14:06 (UTC)
  • 02-05-2021 18:14:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3000, 13.2070 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
San Severino Marche MC 8 12726 12726
Cingoli MC 8 10352 23078
Treia MC 9 9403 32481
Tolentino MC 12 20069 52550
Pollenza MC 12 6618 59168
Apiro MC 12 2280 61448
Gagliole MC 13 620 62068
Poggio San Vicino MC 13 246 62314
Appignano MC 13 4213 66527
Serrapetrona MC 14 966 67493
Staffolo AN 15 2253 69746
Belforte del Chienti MC 15 1886 71632
Castelraimondo MC 16 4587 76219
Matelica MC 17 9981 86200
San Paolo di Jesi AN 18 933 87133
Cupramontana AN 18 4756 91889
Urbisaglia MC 18 2628 94517
Caldarola MC 18 1823 96340
Cerreto d'Esi AN 18 3817 100157
Camporotondo di Fiastrone MC 19 563 100720
Filottrano AN 19 9499 110219
Colmurano MC 19 1263 111482
Montecassiano MC 20 7125 118607

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km SW of Ancona (100861 inhabitants)
56 Km NE of Foligno (57155 inhabitants)
62 Km S of Fano (60888 inhabitants)
70 Km E of Perugia (166134 inhabitants)
72 Km SE of Pesaro (94582 inhabitants)
82 Km NW of Teramo (54892 inhabitants)
94 Km NE of Terni (111501 inhabitants)
99 Km SE of Rimini (147750 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
Bulletin
Rev1000 		ML 0.8 2021-05-02
16:14:06		 43.3003 13.207 1 2021-12-29
11:12:35		 Bollettino Sismico Italiano INGV 96320941
Reviewed
Rev100 		ML 1.1 2021-05-02
16:14:05		 43.3277 13.2227 9 2021-05-02
16:29:09		 Sala Sismica INGV-Roma 89720531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-02 16:14:06 ± 0.13
Latitude 43.3003 ± 0.0072
Longitude 13.2070 ± 0.0124
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 96320941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1020
Semi-minor axis of confidence ellipse (meter) 770
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
Circular confidence region, given by single value of horizontal uncertainty (meter) 1020.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.07554
Epicentral distance of station farthest from the epicenter (degree) 0.38941
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 96320941
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-07 13:49:48

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 15
Type of magnitude ML
Reference to an origin 89720531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-02 16:29:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MC2.EHZ. 2021-05-02T16:14:14.59 0.3 undecidable manual P 182 43.2234 91 -0.61 62
IV.MF5.EHZ. 2021-05-02T16:14:14.58 0.3 undecidable manual P 149 40.2264 91 -0.04 71
IV.CESI.HHZ. 2021-05-02T16:14:14.32 0.3 undecidable manual P 217 40.9257 91 -0.42 66
IV.AOI.HHE. 2021-05-02T16:14:13.70 1.0 undecidable manual P 49 42.2244 91 -1.3 15
IV.GUMA.HHE. 2021-05-02T16:14:12.49 0.3 undecidable manual P 158 28.3494 91 0.26 69
IV.FDMO.HHZ. 2021-05-02T16:14:12.56 0.3 undecidable manual P 198 30.8469 91 -0.17 70
IV.MML1.EHE. 2021-05-02T16:14:12.26 0.3 undecidable manual P 223 28.1496 91 0.08 72
IV.SNTG.HHZ. 2021-05-02T16:14:11.11 0.1 undecidable manual P 257 22.0668 91 0.13 96
IV.ARVD.HHZ. 2021-05-02T16:14:11.96 0.3 undecidable manual P 316 30.6471 91 -0.73 60
IV.CSP1.EHZ. 2021-05-02T16:14:11.33 0.1 negative manual P 180 23.1546 91 0.14 96
IV.PF6.EHZ. 2021-05-02T16:14:10.40 0.3 undecidable manual P 183 18.0708 92 0.23 71
IV.TRE1.HNZ. 2021-05-02T16:14:08.58 0.3 undecidable manual P 82 8.5803 93 0.3 71
IV.CING.HHZ. 2021-05-02T16:14:08.28 0.1 undecidable manual P 354 8.3805 93 0.05 100
IV.EL6.EHZ. 2021-05-02T16:14:08.92 0.1 undecidable manual P 291 9.0798 93 0.55 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CING.HNE. ML:2.4 0.0044922527 0.5024 AML other m 2021-05-02T16:14:09.71
IV.CING.HHN. ML:1.5 0.0005786081 0.0768 AML other m 2021-05-02T16:14:09.85
IV.CING.HHE. ML:1.5 0.00060349385 0.0768 AML other m 2021-05-02T16:14:10.06
IV.CING.HNN. ML:2.3 0.0037191095 1.4368 AML other m 2021-05-02T16:14:10.99
IV.EL6.EHN. ML:0.9 0.00011597294999999999 1.6416 AML other m 2021-05-02T16:14:11.15
IV.EL6.EHE. ML:0.9 0.0001052457 0.4224 AML other m 2021-05-02T16:14:11.30
IV.SNTG.HHN. ML:1.3 0.0001522045 0.1408 AML other m 2021-05-02T16:14:15.20
IV.SNTG.HNN. ML:1.4 0.000206166615 0.5888 AML other m 2021-05-02T16:14:15.21
IV.SNTG.HNE. ML:1.2 0.0001198191 0.8064 AML other m 2021-05-02T16:14:15.30
IV.CSP1.EHN. ML:0.7 0.0000327198 1.5648 AML other m 2021-05-02T16:14:16.87
IV.SNTG.HHE. ML:0.4 0.000020923358 0.2176 AML other m 2021-05-02T16:14:16.65
IV.CSP1.EHE. ML:1.0 0.00006772434500000001 0.1408 AML other m 2021-05-02T16:14:17.28
IV.ARVD.HHN. ML:0.6 0.000021818095 0.0768 AML other m 2021-05-02T16:14:17.60
IV.ARVD.HHE. ML:0.6 0.0000214271735 0.1024 AML other m 2021-05-02T16:14:17.97
IV.FDMO.HHE. ML:0.6 0.000021240130000000002 0.1152 AML other m 2021-05-02T16:14:18.85
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