Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 28-07-2020 and time 21:26:49 (Italy) in region 7 km W Sassoferrato (AN)

A magnitude ML 0.9 earthquake occured in region: 7 km W Sassoferrato (AN), on

  • 28-07-2020 19:26:49 (UTC)
  • 28-07-2020 21:26:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4290, 12.7790 at 14 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
Serra Sant'Abbondio PU 7 1027 8312
Scheggia e Pascelupo PG 9 1393 9705
Costacciaro PG 9 1216 10921
Frontone PU 10 1300 12221
Sigillo PG 11 2404 14625
Genga AN 13 1797 16422
Cantiano PU 13 2245 18667
Fabriano AN 15 31480 50147
Fossato di Vico PG 15 2840 52987
Arcevia AN 15 4612 57599
Pergola PU 16 6333 63932
Cagli PU 17 8731 72663
Gubbio PG 18 32216 104879
Serra San Quirico AN 19 2850 107729

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km NE of Perugia (166134 inhabitants)
50 Km SW of Fano (60888 inhabitants)
53 Km N of Foligno (57155 inhabitants)
55 Km S of Pesaro (94582 inhabitants)
63 Km W of Ancona (100861 inhabitants)
72 Km S of Rimini (147750 inhabitants)
73 Km E of Arezzo (99543 inhabitants)
90 Km SE of Cesena (96758 inhabitants)
97 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
Reviewed
Rev100 		ML 0.9 2020-07-28
19:26:49		 43.4293 12.7792 14 2020-07-28
19:37:39		 Sala Sismica INGV-Roma 81431471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-28 19:26:49 ± 0.09
Latitude 43.4293 ± 0.0036
Longitude 12.7792 ± 0.0037
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81431471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 419
Semi-minor axis of confidence ellipse (meter) 89
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 211
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.27429
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 81431471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-28 19:37:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATPI.EHZ. 2020-07-28T19:27:00.28 0.1 undecidable manual S 275 30.4473 100 0.3 90
IV.MURB.HHZ. 2020-07-28T19:26:59.54 0.1 undecidable manual S 228 27.6501 102 0.3 90
IV.ATCC.EHZ. 2020-07-28T19:26:59.85 0.1 undecidable manual S 203 29.3484 101 0.16 92
IV.EL6.EHZ. 2020-07-28T19:26:59.82 0.1 undecidable manual S 113 28.2495 102 0.41 89
IV.NARO.HHZ. 2020-07-28T19:26:58.62 0.1 undecidable manual S 322 25.6521 104 -0.12 93
IV.PIEI.HHZ. 2020-07-28T19:26:57.67 0.1 undecidable manual S 301 22.9548 106 -0.35 90
IV.SNTG.HHZ. 2020-07-28T19:26:57.67 0.1 undecidable manual S 146 23.3544 106 -0.46 88
IV.MPAG.EHZ. 2020-07-28T19:26:57.86 0.3 undecidable manual S 356 22.2555 107 0.01 72
IV.ARVD.HHZ. 2020-07-28T19:26:56.16 3.0 undecidable manual S 0
IV.ATFO.HHZ. 2020-07-28T19:26:56.65 0.1 undecidable manual S 247 18.1707 114 -0.17 95
IV.EL6.EHZ. 2020-07-28T19:26:55.25 0.1 undecidable manual P 113 28.2495 102 0.1 95
IV.ATPI.EHZ. 2020-07-28T19:26:55.69 0.1 undecidable manual P 275 30.4473 100 0.21 92
IV.FRON.EHZ. 2020-07-28T19:26:55.21 0.3 undecidable manual S 336 10.6782 134 0.04 74
IV.MURB.HHZ. 2020-07-28T19:26:55.19 0.1 positive manual P 228 27.6501 102 0.14 94
IV.FOSV.EHZ. 2020-07-28T19:26:55.78 0.3 undecidable manual S 186 14.9739 121 -0.3 70
IV.ATCC.EHZ. 2020-07-28T19:26:55.23 0.1 undecidable manual P 203 29.3484 101 -0.08 94
IV.MPAG.EHZ. 2020-07-28T19:26:54.38 0.1 undecidable manual P 356 22.2555 107 0.14 96
IV.SSFR.HHZ. 2020-07-28T19:26:54.03 0.1 undecidable manual S 18 0.7992 176 0.01 100
IV.NARO.HHZ. 2020-07-28T19:26:54.67 0.1 undecidable manual P 322 25.6521 104 -0.09 94
IV.PIEI.HHZ. 2020-07-28T19:26:54.16 0.1 undecidable manual P 301 22.9548 106 -0.19 93
IV.SNTG.HHZ. 2020-07-28T19:26:54.32 0.1 undecidable manual P 146 23.3544 106 -0.09 95
IV.FOSV.EHZ. 2020-07-28T19:26:53.11 0.1 positive manual P 186 14.9739 121 -0.11 96
IV.ATFO.HHZ. 2020-07-28T19:26:53.75 0.3 negative manual P 247 18.1707 114 0.1 72
IV.SSFR.HHZ. 2020-07-28T19:26:52.07 0.1 undecidable manual P 18 0.7992 176 0.03 100
IV.FRON.EHZ. 2020-07-28T19:26:52.72 0.1 undecidable manual P 336 10.6782 134 0.02 99
IV.ARVD.HHZ. 2020-07-28T19:26:51.98 3.0 positive manual P -0.77 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSFR.HHN. ML:1.4 0.00033699999999999995 0.62 AML other m 2020-07-28T19:26:54.07
IV.SSFR.HHE. ML:1.3 0.00027249999999999996 0.08 AML other m 2020-07-28T19:26:54.34
IV.SSFR.HNN. ML:1.7 0.000666 0.16 AML other m 2020-07-28T19:26:54.43
IV.SSFR.HNE. ML:1.6 0.000449 0.76 AML other m 2020-07-28T19:26:54.53
IV.FRON.EHE. ML:0.9 0.00007965 0.1 AML other m 2020-07-28T19:26:55.35
IV.FOSV.EHE. ML:0.8 0.000050950000000000005 0.06 AML other m 2020-07-28T19:26:55.85
IV.FRON.EHN. ML:0.9 0.0000753 0.16 AML other m 2020-07-28T19:26:55.85
IV.FOSV.EHN. ML:0.8 0.0000512 1.56 AML other m 2020-07-28T19:26:56.86
IV.ATFO.HHN. ML:0.8 0.0000521 0.78 AML other m 2020-07-28T19:26:57.14
IV.ATFO.HHE. ML:0.8 0.00004815 0.12 AML other m 2020-07-28T19:26:58.04
IV.MPAG.EHN. ML:0.7 0.000029999999999999997 0.18 AML other m 2020-07-28T19:26:58.28
IV.MPAG.EHE. ML:0.9 0.000050299999999999996 0.14 AML other m 2020-07-28T19:26:58.30
IV.PIEI.HHN. ML:0.5 0.0000178 0.08 AML other m 2020-07-28T19:26:58.39
IV.SNTG.HHE. ML:0.7 0.0000298 0.1 AML other m 2020-07-28T19:26:58.56
IV.SNTG.HHN. ML:0.8 0.000041599999999999995 0.26 AML other m 2020-07-28T19:26:58.53
IV.PIEI.HHE. ML:0.8 0.0000404 0.08 AML other m 2020-07-28T19:26:58.90
IV.NARO.HHN. ML:0.7 0.0000268 0.08 AML other m 2020-07-28T19:26:59.14
IV.NARO.HHE. ML:0.7 0.000022800000000000002 0.26 AML other m 2020-07-28T19:26:59.15
IV.MURB.HHE. ML:1.5 0.0001615 0.32 AML other m 2020-07-28T19:27:00.35
IV.MURB.HHN. ML:1.5 0.00014700000000000002 0.22 AML other m 2020-07-28T19:27:00.30
IV.ATCC.EHE. ML:0.8 0.000027700000000000002 0.72 AML other m 2020-07-28T19:27:00.03
IV.ATPI.EHE. ML:1.0 0.000039800000000000005 0.32 AML other m 2020-07-28T19:27:00.69
IV.ATPI.EHN. ML:1.0 0.0000453 0.52 AML other m 2020-07-28T19:27:00.99
IV.ATCC.EHN. ML:0.7 0.0000262 0.82 AML other m 2020-07-28T19:27:01.29
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