Earthquake (quarry blast) with magnitude of ML 1.1 on date 21-02-2020 and time 09:55:24 (UTC) in region 3 km SW Serra San Quirico (AN)

A magnitude ML 1.1 (quarry blast) earthquake occured in region: 3 km SW Serra San Quirico (AN), on

  • 21-02-2020 09:55:24 (UTC)
  • 21-02-2020 10:55:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.43, 12.99 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Serra San Quirico AN 3 2850 2850
Genga AN 5 1797 4647
Mergo AN 6 1037 5684
Rosora AN 9 1985 7669
Poggio San Vicino MC 9 246 7915
Arcevia AN 9 4612 12527
Cupramontana AN 10 4756 17283
Castelplanio AN 11 3540 20823
Sassoferrato AN 11 7285 28108
Cerreto d'Esi AN 12 3817 31925
Poggio San Marcello AN 12 693 32618
Maiolati Spontini AN 12 6248 38866
Apiro MC 12 2280 41146
Fabriano AN 12 31480 72626
Montecarotto AN 13 1987 74613
Monte Roberto AN 13 3061 77674
Serra de' Conti AN 14 3746 81420
Castelbellino AN 14 4947 86367
San Paolo di Jesi AN 15 933 87300
Staffolo AN 16 2253 89553
Barbara AN 17 1368 90921
Matelica MC 19 9981 100902
Cingoli MC 19 10352 111254
Serra Sant'Abbondio PU 19 1027 112281
Pergola PU 20 6333 118614
Esanatoglia MC 20 2034 120648

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km S of Fano (60888 inhabitants)
48 Km W of Ancona (100861 inhabitants)
54 Km S of Pesaro (94582 inhabitants)
57 Km NE of Foligno (57155 inhabitants)
60 Km NE of Perugia (166134 inhabitants)
79 Km SE of Rimini (147750 inhabitants)
90 Km E of Arezzo (99543 inhabitants)
99 Km SE of Cesena (96758 inhabitants)
100 Km N of Terni (111501 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 1.1 2020-02-21
09:55:24
43.43 12.99 1 2020-07-18
21:08:39
Bollettino Sismico Italiano INGV 79967071
Reviewed
Rev100
ML 1.2 2020-02-21
09:55:24
43.45 13.01 6 2020-02-21
10:03:56
Sala Sismica INGV-Roma 76696871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-21 09:55:24 ± 0.03
Latitude 43.43 ± 0.00
Longitude 12.99 ± 0.00
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 79967071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 290
Semi-minor axis of confidence ellipse (meter) 200
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 232
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0.01529
Epicentral distance of station farthest from the epicenter (degree) 0.21404
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 79967071
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-07 01:13:22

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 76696871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-21 10:03:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FRON.EHZ. 2020-02-21T09:55:29.02 0.3 undecidable manual P 295 0.214 91 -0.1 72
IV.SNTG.HHZ. 2020-02-21T09:55:28.34 0.3 undecidable manual P 193 0.1763 91 0.07 73
IV.CING.HHE. 2020-02-21T09:55:27.77 0.3 undecidable manual P 109 0.1556 92 -0.04 74
IV.EL6.EHZ. 2020-02-21T09:55:27.11 0.3 undecidable manual P 141 0.125 92 -0.04 74
IV.SSFR.HHZ. 2020-02-21T09:55:27.83 0.3 undecidable manual P 274 0.1538 92 0.06 73
IV.ARVD.HHZ. 2020-02-21T09:55:26.11 0.1 undecidable manual P 332 0.08 93 -0.04 100
IV.MMUR.HNZ. 2020-02-21T09:55:24.79 0.1 undecidable manual P 11 0.0153 107 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSFR.HHN. ML:1.1 0.00012435 0.68 AML other m 2020-02-21T09:55:33.59
IV.EL6.EHN. ML:1.3 0.00027 0.42 AML other m 2020-02-21T09:55:35.62
IV.EL6.EHE. ML:1 0.000141 0.52 AML other m 2020-02-21T09:55:35.82
IV.SSFR.HHE. ML:1.3 0.0002075 1.02 AML other m 2020-02-21T09:55:37.69
IV.SNTG.HHE. ML:0.9 6.415E-5 1.1 AML other m 2020-02-21T09:55:38.18
IV.FRON.EHE. ML:1 6.47E-5 1 AML other m 2020-02-21T09:55:39.01
IV.SNTG.HHN. ML:1.2 0.0001455 0.94 AML other m 2020-02-21T09:55:40.67
IV.FRON.EHN. ML:1 7.67E-5 0.62 AML other m 2020-02-21T09:55:42.25
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