Earthquake with magnitude of ML 0.5 on date 25-07-2020 and time 10:24:37 (Italy) in region 1 km NW Premilcuore (FC)

A magnitude ML 0.5 earthquake occured in region: 1 km NW Premilcuore (FC), on

  • 25-07-2020 08:24:37 (UTC)
  • 25-07-2020 10:24:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.99, 11.77 at 9 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
Premilcuore FC 1 799 799
Portico e San Benedetto FC 4 756 1555
Rocca San Casciano FC 10 1910 3465
Tredozio FC 10 1212 4677
Galeata FC 11 2516 7193
Santa Sofia FC 12 4136 11329
Civitella di Romagna FC 14 3786 15115
San Godenzo FI 14 1167 16282
Marradi FI 16 3139 19421
Dovadola FC 18 1653 21074
Modigliana FC 19 4560 25634

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SW of Forlì (117913 inhabitants)
34 Km S of Faenza (58541 inhabitants)
41 Km S of Imola (69797 inhabitants)
41 Km W of Cesena (96758 inhabitants)
48 Km NE of Firenze (382808 inhabitants)
54 Km E of Scandicci (50609 inhabitants)
55 Km E of Prato (191150 inhabitants)
59 Km N of Arezzo (99543 inhabitants)
59 Km SW of Ravenna (159116 inhabitants)
64 Km W of Rimini (147750 inhabitants)
66 Km SE of Bologna (386663 inhabitants)
69 Km E of Pistoia (90315 inhabitants)
82 Km NE of Siena (53903 inhabitants)
92 Km W of Pesaro (94582 inhabitants)
95 Km S of Ferrara (133155 inhabitants)
99 Km SE of Modena (184973 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
Reviewed
Rev100
ML 0.5 2020-07-25
08:24:37
43.99 11.77 9 2020-07-25
08:50:48
Sala Sismica INGV-Roma 81328061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-25 08:24:37 ± 0.09
Latitude 43.99 ± 0.00
Longitude 11.77 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81328061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 342
Semi-minor axis of confidence ellipse (meter) 276
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 222
Circular confidence region, given by single value of horizontal uncertainty (meter) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 174
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.09982
Epicentral distance of station farthest from the epicenter (degree) 0.30397
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 81328061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-25 08:50:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SEI.HHZ. 2020-07-25T08:24:49.77 0.3 undecidable manual S 283 0.304 50 0.06 71
IV.RONT.HHZ. 2020-07-25T08:24:47.81 0.3 undecidable manual S 271 0.2428 108 0.25 69
IV.RUFI.EHZ. 2020-07-25T08:24:47.27 0.3 undecidable manual S 231 0.241 108 -0.2 70
IV.ASQU.HHZ. 2020-07-25T08:24:45.96 0.3 undecidable manual S 176 0.1916 112 0.25 70
IV.SEI.HHZ. 2020-07-25T08:24:44.36 0.6 undecidable manual P 283 0.304 50 -0.28 45
IV.RINC.HHZ. 2020-07-25T08:24:44.31 0.3 undecidable manual S 229 0.1556 117 -0.13 72
IV.RONT.HHZ. 2020-07-25T08:24:43.61 0.6 undecidable manual P 271 0.2428 108 0.21 47
IV.RUFI.EHZ. 2020-07-25T08:24:43.22 0.1 undecidable manual P 231 0.241 108 -0.13 95
IV.LMD.HHZ. 2020-07-25T08:24:42.56 0.3 undecidable manual S 333 0.0998 128 -0.06 74
IV.SFI.EHZ. 2020-07-25T08:24:42.47 0.3 undecidable manual S 147 0.0998 128 -0.14 73
IV.ASQU.HHZ. 2020-07-25T08:24:42.36 0.1 undecidable manual P 176 0.1916 112 0.03 98
IV.RINC.HHZ. 2020-07-25T08:24:41.68 0.3 undecidable manual P 229 0.1556 117 0.08 73
IV.LMD.HHZ. 2020-07-25T08:24:40.55 0.1 undecidable manual P 333 0.0998 128 0 100
IV.SFI.EHZ. 2020-07-25T08:24:40.60 0.1 undecidable manual P 147 0.0998 128 0.05 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:0.7 6.6087135E-5 0.1408 AML other m 2020-07-25T08:24:42.79
IV.LMD.HHN. ML:0.7 7.168347E-5 0.16 AML other m 2020-07-25T08:24:42.74
IV.SFI.EHE. ML:0.3 2.2801105E-5 0.0768 AML other m 2020-07-25T08:24:42.62
IV.SFI.EHN. ML:0.2 2.2493315E-5 0.064 AML other m 2020-07-25T08:24:42.64
IV.SFI.HNE. ML:0.6 4.5102995E-5 0 AML other m 2020-07-25T08:24:43.82
IV.SFI.HNN. ML:0.6 4.6312235E-5 0.128 AML other m 2020-07-25T08:24:42.74
IV.RINC.HHE. ML:0.1 1.1823345E-5 0.1408 AML other m 2020-07-25T08:24:44.64
IV.RINC.HHN. ML:0.1 8.1457715E-6 0.1408 AML other m 2020-07-25T08:24:44.92
IV.RUFI.EHN. ML:0.6 1.8692945E-5 0.2176 AML other m 2020-07-25T08:24:47.64
IV.SEI.HHE. ML:0.8 2.3735225E-5 0.1216 AML other m 2020-07-25T08:24:50.29
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download