Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 19-09-2021 and time 07:19:30 (UTC) in region 7 km SW Sassoferrato (AN)

A magnitude ML 0.7 earthquake occured in region: 7 km SW Sassoferrato (AN), on

  • 19-09-2021 07:19:30 (UTC)
  • 19-09-2021 09:19:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3770, 12.8180 at 11 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
Sassoferrato AN 7 7285 7285
Sigillo PG 8 2404 9689
Fabriano AN 8 31480 41169
Costacciaro PG 9 1216 42385
Fossato di Vico PG 10 2840 45225
Genga AN 11 1797 47022
Scheggia e Pascelupo PG 12 1393 48415
Serra Sant'Abbondio PU 13 1027 49442
Cerreto d'Esi AN 15 3817 53259
Gualdo Tadino PG 16 15208 68467
Frontone PU 17 1300 69767
Arcevia AN 17 4612 74379
Esanatoglia MC 17 2034 76413
Serra San Quirico AN 18 2850 79263
Cantiano PU 19 2245 81508
Gubbio PG 20 32216 113724

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km NE of Perugia (166134 inhabitants)
48 Km N of Foligno (57155 inhabitants)
54 Km SW of Fano (60888 inhabitants)
60 Km S of Pesaro (94582 inhabitants)
63 Km W of Ancona (100861 inhabitants)
76 Km E of Arezzo (99543 inhabitants)
79 Km S of Rimini (147750 inhabitants)
92 Km N of Terni (111501 inhabitants)
96 Km SE of Cesena (96758 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 0.7 2021-09-19
07:19:30		 43.3773 12.8183 11 2021-09-19
07:25:00		 Sala Sismica INGV-Roma 95624101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-19 07:19:30 ± 0.16
Latitude 43.3773 ± 0.0072
Longitude 12.8183 ± 0.0148
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95624101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1227
Semi-minor axis of confidence ellipse (meter) 636
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 255
Circular confidence region, given by single value of horizontal uncertainty (meter) 1230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 177
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.40110
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 95624101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-19 07:25:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SACS.HHZ. 2021-09-19T07:19:58.60 3.0 undecidable manual S -0.1 0
IV.CSP1.EHZ. 2021-09-19T07:19:44.72 0.3 undecidable manual S 135 44.5221 50 0.19 70
IV.MML1.EHZ. 2021-09-19T07:19:41.19 0.3 undecidable manual S 157 31.746 50 0.04 74
IV.EL6.EHZ. 2021-09-19T07:19:38.75 0.3 undecidable manual S 103 23.4543 50 -0.18 73
IV.CSP1.EHZ. 2021-09-19T07:19:38.26 0.1 undecidable manual P 135 44.5221 50 -0.2 93
IV.SNTG.HHZ. 2021-09-19T07:19:37.24 0.3 undecidable manual S 144 16.7721 123 0.16 74
IV.FRON.EHZ. 2021-09-19T07:19:37.38 0.3 undecidable manual S 334 17.2716 122 0.15 74
IV.MML1.EHZ. 2021-09-19T07:19:36.14 0.1 undecidable manual P 157 31.746 50 -0.36 92
IV.ARVD.HHZ. 2021-09-19T07:19:36.90 0.3 undecidable manual S 36 16.6722 123 -0.16 74
IV.MPAG.EHZ. 2021-09-19T07:19:36.20 3.0 undecidable manual S -2.35 0
IV.EL6.EHZ. 2021-09-19T07:19:36.08 0.3 undecidable manual P 103 23.4543 50 0.86 59
IV.ATCC.EHZ. 2021-09-19T07:19:35.74 3.0 negative manual P 0.02 0
IV.FRON.EHZ. 2021-09-19T07:19:34.31 1.0 undecidable manual P 334 17.2716 122 0.07 25
IV.NARO.HHZ. 2021-09-19T07:19:34.93 3.0 undecidable manual P -0.04 0
IV.SNTG.HHZ. 2021-09-19T07:19:34.03 0.6 positive manual P 144 16.7721 123 -0.13 50
IV.ARVD.HHZ. 2021-09-19T07:19:34.06 0.1 undecidable manual P 36 16.6722 123 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SNTG.HHN. ML:0.4 0.00001825876 0.1184 AML other m 2021-09-19T07:19:37.37
IV.SNTG.HHE. ML:0.2 0.000016394355 0.0576 AML other m 2021-09-19T07:19:37.41
IV.FRON.EHE. ML:0.8 0.00004975 0.18 AML other m 2021-09-19T07:19:37.54
IV.FRON.EHN. ML:0.9 0.000063424985 0.08 AML other m 2021-09-19T07:19:37.63
IV.SNTG.HNE. ML:1.1 0.000109180985 0.9216 AML other m 2021-09-19T07:19:42.49
IV.SNTG.HNN. ML:1.2 0.0001319305 0.7584 AML other m 2021-09-19T07:19:47.43
IV.NARO.HHE. ML:0.5 0.000014104186999999999 0.0608 AML other m 2021-09-19T07:19:41.98
IV.NARO.HHN. ML:0.4 0.000009743215799999999 0.08 AML other m 2021-09-19T07:19:41.76
IV.ATCC.EHE. ML:0.6 0.000022852500000000002 0.1984 AML other m 2021-09-19T07:19:54.71
IV.ATCC.EHN. ML:0.7 0.000032431545000000006 0.1216 AML other m 2021-09-19T07:19:40.38
IV.EL6.EHE. ML:0.4 0.000016827055 0.5408 AML other m 2021-09-19T07:19:37.87
IV.EL6.EHN. ML:0.4 0.000015295455000000007 0.2784 AML other m 2021-09-19T07:19:40.07
IV.MML1.HNE. ML:1.3 0.00009437532499999999 0.72 AML other m 2021-09-19T07:19:45.91
IV.MML1.HNN. ML:1.3 0.000092535385 0.8 AML other m 2021-09-19T07:19:54.28
IV.MML1.EHE. ML:0.4 0.000010032707 0.1408 AML other m 2021-09-19T07:19:42.23
IV.MML1.EHN. ML:0.4 0.000010177115 0.16 AML other m 2021-09-19T07:19:41.55
IV.CSP1.EHE. ML:1.0 0.000027995865999999998 1.12 AML other m 2021-09-19T07:19:55.47
IV.CSP1.EHN. ML:0.8 0.000019029567 0.9984 AML other m 2021-09-19T07:19:37.82
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