Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.2 on date 21-04-2019 and time 09:04:53 (UTC) in region 9 km SW Serravalle di Chienti (MC)

A magnitude ML 0.2 earthquake occured in region: 9 km SW Serravalle di Chienti (MC), on

  • 21-04-2019 09:04:53 (UTC)
  • 21-04-2019 11:04:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0250, 12.8600 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Serravalle di Chienti MC 9 1070 1070
Valtopina PG 9 1398 2468
Nocera Umbra PG 11 5839 8307
Monte Cavallo MC 12 145 8452
Foligno PG 15 57155 65607
Sefro MC 15 422 66029
Spello PG 16 8645 74674
Pieve Torina MC 16 1458 76132
Sellano PG 16 1079 77211
Muccia MC 16 915 78126
Trevi PG 19 8469 86595
Pievebovigliana MC 19 866 87461
Fiordimonte MC 19 202 87663
Fiuminata MC 19 1402 89065
Pioraco MC 20 1134 90199

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NE of Foligno (57155 inhabitants)
39 Km E of Perugia (166134 inhabitants)
54 Km NE of Terni (111501 inhabitants)
80 Km NW of Teramo (54892 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
87 Km NW of L'Aquila (69753 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
92 Km S of Fano (60888 inhabitants)
93 Km SE of Arezzo (99543 inhabitants)
99 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
Bulletin
Rev1000 		ML 0.2 2019-04-21
09:04:53		 43.0253 12.8598 10 2019-08-22
08:25:00		 Bollettino Sismico Italiano INGV 69251091
Reviewed
Rev100 		ML 0.2 2019-04-21
09:04:53		 43.0332 12.8602 10 2019-04-21
09:16:22		 Sala Sismica INGV-Roma 67818121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-21 09:04:53 ± 0.06
Latitude 43.0253 ± 0.0045
Longitude 12.8598 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 69251091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 495
Semi-minor axis of confidence ellipse (meter) 132
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 181
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.03867
Epicentral distance of station farthest from the epicenter (degree) 0.26080
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.2

Field Value
Value 0.2
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 69251091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-06-06 08:24:32

ML:0.2

Field Value
Value 0.2
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 67818121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-21 09:16:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2019-04-21T09:05:03.72 0.6 undecidable manual S 75 28.9488 50 0.06 49
IV.FDMO.HHZ. 2019-04-21T09:05:00.37 0.6 undecidable manual S 86 18.4704 118 -0.1 49
IV.CSP1.EHZ. 2019-04-21T09:04:59.09 0.3 undecidable manual P 75 28.9488 50 -0.15 72
IV.ASSB.HHZ. 2019-04-21T09:04:59.78 0.6 undecidable manual S 277 16.3725 121 -0.06 50
IT.MTCL.HGZ. 2019-04-21T09:04:58.52 0.6 undecidable manual S 107 11.877 130 -0.03 50
IV.MML1.HNZ. 2019-04-21T09:04:58.92 0.3 undecidable manual S 43 13.3755 126 -0.03 75
IV.ASSB.HHZ. 2019-04-21T09:04:57.00 0.1 undecidable manual P 277 16.3725 121 -0.04 100
IV.FDMO.HHZ. 2019-04-21T09:04:57.38 0.1 undecidable manual P 86 18.4704 118 -0.02 100
IV.CESI.HHZ. 2019-04-21T09:04:56.80 0.1 undecidable manual S 122 4.2957 156 -0.12 100
IT.MTCL.HGZ. 2019-04-21T09:04:56.35 0.3 undecidable manual P 107 11.877 130 0.06 75
IV.MML1.HNZ. 2019-04-21T09:04:56.62 0.1 undecidable manual P 43 13.3755 126 0.1 99
IV.CESI.HHZ. 2019-04-21T09:04:55.58 0.1 undecidable manual P 122 4.2957 156 0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.2 0.0000285 0.14 AML other m 2019-04-21T09:04:56.89
IV.CESI.HHE. ML:0.2 0.000031799999999999994 1.74 AML other m 2019-04-21T09:04:56.95
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