Earthquake with magnitude of ML 0.8 on date 21-03-2020 and time 12:22:20 (Italy) in region 3 km S Serra Sant'Abbondio (PU)

A magnitude ML 0.8 earthquake occured in region: 3 km S Serra Sant'Abbondio (PU), on

  • 21-03-2020 11:22:20 (UTC)
  • 21-03-2020 12:22:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.46, 12.78 at 13 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.

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 Sant'Abbondio PU 4 1027 1027
Sassoferrato AN 7 7285 8312
Frontone PU 7 1300 9612
Scheggia e Pascelupo PG 11 1393 11005
Pergola PU 12 6333 17338
Cantiano PU 13 2245 19583
Costacciaro PG 13 1216 20799
Genga AN 13 1797 22596
Arcevia AN 13 4612 27208
Cagli PU 14 8731 35939
Sigillo PG 15 2404 38343
Fabriano AN 17 31480 69823
Fossato di Vico PG 19 2840 72663
Serra San Quirico AN 19 2850 75513
Acqualagna PU 20 4393 79906

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SW of Fano (60888 inhabitants)
51 Km NE of Perugia (166134 inhabitants)
51 Km S of Pesaro (94582 inhabitants)
57 Km N of Foligno (57155 inhabitants)
62 Km W of Ancona (100861 inhabitants)
69 Km S of Rimini (147750 inhabitants)
73 Km E of Arezzo (99543 inhabitants)
87 Km SE of Cesena (96758 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 0.8 2020-03-21
11:22:20
43.46 12.78 13 2020-03-21
11:39:12
Sala Sismica INGV-Roma 77435531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-21 11:22:20 ± 0.13
Latitude 43.46 ± 0.00
Longitude 12.78 ± 0.01
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77435531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 561
Semi-minor axis of confidence ellipse (meter) 466
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 283
Circular confidence region, given by single value of horizontal uncertainty (meter) 560
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.96497
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 77435531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-21 11:39:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CR.ZAG.BHZ. 2020-03-21T11:23:45.26 3.0 undecidable manual Sg 18.200001 0
IV.IFIL.HHZ. 2020-03-21T11:23:29.79 3.0 negative manual Pn -1.93 0
IV.SPS2.HHZ. 2020-03-21T11:23:28.16 3.0 negative manual Pn -1.43 0
IV.ROSPO.HHZ. 2020-03-21T11:23:19.11 3.0 undecidable manual Sn -0.99 0
IV.CESX.HHZ. 2020-03-21T11:22:51.60 3.0 undecidable manual Sn -3.06 0
OX.MPRI.HHZ. 2020-03-21T11:22:47.63 3.0 undecidable manual Pg 7.94 0
GU.POPM.HHZ. 2020-03-21T11:22:44.67 3.0 undecidable manual Sn -1.45 0
IV.FIR.HHZ. 2020-03-21T11:22:41.86 3.0 undecidable manual Sg 1.62 0
IV.MOMA.HHZ. 2020-03-21T11:22:36.73 3.0 undecidable manual Pg 5.45 0
IV.RIBO.EHZ.01 2020-03-21T11:22:35.76 3.0 undecidable manual Pg 1.58 0
IV.NRCA.HNZ. 2020-03-21T11:22:32.56 3.0 undecidable manual Pn 0.68 0
IV.SBPO.HNZ. 2020-03-21T11:22:30.52 3.0 positive manual Pg -0.3 0
IV.SNTG.HHZ. 2020-03-21T11:22:30.13 0.3 undecidable manual S 151 0.2365 99 0.33 68
IV.PE3.EHZ. 2020-03-21T11:22:29.78 3.0 undecidable manual P 0
IV.CAVE.HHZ. 2020-03-21T11:22:29.13 3.0 positive manual Pg 0.27 0
IV.PE3.EHZ. 2020-03-21T11:22:29.99 3.0 undecidable manual S 0
IV.FOSV.EHZ. 2020-03-21T11:22:27.79 0.1 undecidable manual S 185 0.1682 108 -0.03 97
IV.MPAG.EHZ. 2020-03-21T11:22:27.91 0.3 undecidable manual S 354 0.1682 108 0.09 73
IV.ARVD.HHZ. 2020-03-21T11:22:26.41 0.3 undecidable manual S 73 0.1205 121 -0.13 72
IV.SNTG.HHZ. 2020-03-21T11:22:25.70 0.1 undecidable manual P 151 0.2365 99 -0.08 95
IV.FRON.EHZ. 2020-03-21T11:22:25.47 0.1 undecidable manual S 323 0.0692 142 0.07 100
IV.FOSV.EHZ. 2020-03-21T11:22:24.56 0.1 undecidable manual P 185 0.1682 108 -0.08 96
IV.MPAG.EHZ. 2020-03-21T11:22:24.60 0.1 undecidable manual P 354 0.1682 108 -0.04 97
IV.FRON.EHZ. 2020-03-21T11:22:23.20 1.0 undecidable manual P 323 0.0692 142 -0.04 25
IV.ARVD.HHZ. 2020-03-21T11:22:23.91 0.1 undecidable manual P 73 0.1205 121 0.01 99
IV.BRSN.EHZ. 2020-03-21T11:22:19.50 0.1 undecidable manual P 0.965 -9.99 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHN. ML:0.5 2.615E-5 0.08 AML other m 2020-03-21T11:22:27.88
IV.FOSV.EHE. ML:0.5 2.33E-5 0.08 AML other m 2020-03-21T11:22:27.84
IV.MOMA.HHE. ML:1.1 2.07E-5 0.48 AML other m 2020-03-21T11:22:38.40
IV.MOMA.HHN. ML:1 1.66E-5 0.24 AML other m 2020-03-21T11:22:38.69
IV.FIR.HHE. ML:2.7 0.000345 0.54 AML other m 2020-03-21T11:22:45.43
IV.FIR.HHN. ML:2.6 0.0002555 0.52 AML other m 2020-03-21T11:22:45.29
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download