Earthquake with magnitude of ML 1.4 on date 05-08-2020 and time 16:18:37 (UTC) in region 1 km S Premilcuore (FC)

A magnitude ML 1.4 earthquake occured in region: 1 km S Premilcuore (FC), on

  • 05-08-2020 16:18:37 (UTC)
  • 05-08-2020 18:18:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.97, 11.78 at 8 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 7 756 1555
Santa Sofia FC 10 4136 5691
Galeata FC 11 2516 8207
Rocca San Casciano FC 12 1910 10117
Tredozio FC 13 1212 11329
Civitella di Romagna FC 14 3786 15115
San Godenzo FI 14 1167 16282
Marradi FI 18 3139 19421
Dovadola FC 19 1653 21074
Bagno di Romagna FC 20 6026 27100
Pratovecchio Stia AR 20 5845 32945

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SW of Forlì (117913 inhabitants)
37 Km S of Faenza (58541 inhabitants)
42 Km W of Cesena (96758 inhabitants)
44 Km S of Imola (69797 inhabitants)
47 Km E of Firenze (382808 inhabitants)
53 Km E of Scandicci (50609 inhabitants)
56 Km E of Prato (191150 inhabitants)
56 Km N of Arezzo (99543 inhabitants)
60 Km SW of Ravenna (159116 inhabitants)
64 Km W of Rimini (147750 inhabitants)
68 Km SE of Bologna (386663 inhabitants)
69 Km E of Pistoia (90315 inhabitants)
80 Km NE of Siena (53903 inhabitants)
91 Km W of Pesaro (94582 inhabitants)
98 Km S of Ferrara (133155 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 1.4 2020-08-05
16:18:37
43.97 11.78 8 2020-08-05
16:33:43
Sala Sismica INGV-Roma 81680081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-05 16:18:37 ± 0.08
Latitude 43.97 ± 0.00
Longitude 11.78 ± 0.01
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81680081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 509
Semi-minor axis of confidence ellipse (meter) 240
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 230
Circular confidence region, given by single value of horizontal uncertainty (meter) 510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.65021
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 81680081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-05 16:33:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.IMI.HHZ. 2020-08-05T16:20:16.95 3.0 undecidable manual Sg 17.77 0
IV.MSFR.HHZ. 2020-08-05T16:20:08.90 3.0 negative manual Pg 18.110001 0
IV.SPS2.HHZ. 2020-08-05T16:20:00.08 3.0 positive manual Pg 18.200001 0
IV.CAGR.HHZ. 2020-08-05T16:19:57.19 3.0 undecidable manual Pn 1.13 0
IV.SALB.HHZ. 2020-08-05T16:19:50.83 3.0 positive manual Pg 15.68 0
IV.JOPP.HHZ. 2020-08-05T16:19:47.79 3.0 undecidable manual Pn -0.15 0
IV.PTRJ.HHZ. 2020-08-05T16:19:40.55 3.0 undecidable manual Sn 0.66 0
IV.AGLI.HHZ. 2020-08-05T16:19:35.91 3.0 undecidable manual Pg 15.05 0
IV.VVLD.HHZ. 2020-08-05T16:19:20.43 3.0 undecidable manual Sn -1.16 0
IV.SARZ.HHZ. 2020-08-05T16:19:15.13 3.0 negative manual Pn 3.72 0
IV.PTRJ.HHZ. 2020-08-05T16:19:13.37 3.0 undecidable manual Pg 5.64 0
MN.TRI.HHZ. 2020-08-05T16:19:00.81 3.0 negative manual Pn 0.24 0
IV.LAV9.HNZ. 2020-08-05T16:18:59.11 3.0 undecidable manual Pn 0.78 0
IV.CAFI.HHZ. 2020-08-05T16:18:59.90 0.3 undecidable manual S 168 0.6502 50 0.35 63
IV.BOZZ.HNZ. 2020-08-05T16:18:58.93 3.0 positive manual Pn -1.08 0
IV.MNTV.HNZ. 2020-08-05T16:18:58.35 3.0 undecidable manual Pn 0.09 0
IV.ATMC.EHE. 2020-08-05T16:18:58.28 0.6 undecidable manual S 150 0.598 50 0.28 43
IV.PARC.HHZ. 2020-08-05T16:18:54.05 0.6 undecidable manual S 134 0.4578 50 0.2 45
IV.CAFI.HHZ. 2020-08-05T16:18:50.18 0.3 undecidable manual P 168 0.6502 50 0.07 67
IV.VISG.HHZ. 2020-08-05T16:18:50.12 0.3 undecidable manual S 312 0.3345 50 -0.07 71
IV.SEI.HHZ. 2020-08-05T16:18:49.83 0.3 undecidable manual S 286 0.3166 50 0.17 70
IV.ATMC.EHE. 2020-08-05T16:18:49.01 0.6 undecidable manual P 150 0.598 50 -0.2 44
IV.BRIS.HHZ. 2020-08-05T16:18:48.15 0.6 undecidable manual S 358 0.259 106 0.56 43
IV.PARC.HHZ. 2020-08-05T16:18:46.01 0.6 undecidable manual P 134 0.4578 50 -0.81 37
IV.RUFI.EHZ. 2020-08-05T16:18:46.48 0.3 undecidable manual S 237 0.2338 108 -0.17 71
IV.VISG.HHZ. 2020-08-05T16:18:44.38 0.3 undecidable manual P 312 0.3345 50 -0.33 67
IV.ASQU.HHZ. 2020-08-05T16:18:44.56 0.3 undecidable manual S 178 0.1691 114 0.23 71
IV.SEI.HHZ. 2020-08-05T16:18:44.12 0.1 undecidable manual P 286 0.3166 50 -0.28 91
IV.RINC.HHZ. 2020-08-05T16:18:43.78 0.3 undecidable manual S 238 0.1484 117 0.18 72
IV.BRIS.HHZ. 2020-08-05T16:18:43.34 0.1 undecidable manual P 358 0.259 106 0.14 95
IV.RUFI.EHZ. 2020-08-05T16:18:42.61 0.1 undecidable manual P 237 0.2338 108 -0.05 97
IV.MC2.EHZ. 2020-08-05T16:18:42.26 3.0 undecidable manual P -0.3 0
IV.ASQU.HHZ. 2020-08-05T16:18:41.36 0.1 undecidable manual P 178 0.1691 114 0.04 98
IV.RINC.HHZ. 2020-08-05T16:18:41.09 0.6 positive manual P 238 0.1484 117 0.19 48
IV.SFI.EHZ. 2020-08-05T16:18:41.10 0.1 undecidable manual S 142 0.0773 134 -0.25 96
IV.SFI.EHZ. 2020-08-05T16:18:39.55 0.1 undecidable manual P 142 0.0773 134 -0.05 100
IV.MURB.HHZ. 2020-08-05T16:18:36.34 3.0 undecidable manual P 0.14 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHN. ML:1.9 0.001325 0.12 AML other m 2020-08-05T16:18:41.31
IV.SFI.HNN. ML:1.9 0.00134 0.12 AML other m 2020-08-05T16:18:41.31
IV.BRIS.HHN. ML:1.5 0.000178 0.3 AML other m 2020-08-05T16:18:48.69
IV.SFI.EHE. ML:1.6 0.00067082755 0.1792 AML other m 2020-08-05T16:18:41.48
IV.SFI.HNE. ML:1.6 0.0006734239 0.1664 AML other m 2020-08-05T16:18:41.48
IV.RINC.HHE. ML:1.4 0.0002237689 0.1152 AML other m 2020-08-05T16:18:44.31
IV.RINC.HHN. ML:1.2 0.00014877991 0.1408 AML other m 2020-08-05T16:18:44.28
IV.ASQU.HHE. ML:1.6 0.000307285 0.1408 AML other m 2020-08-05T16:18:45.09
IV.ASQU.HHN. ML:1.6 0.0003258396 0.1792 AML other m 2020-08-05T16:18:45.07
IV.RUFI.EHE. ML:1.1 6.93936875E-5 0.3456 AML other m 2020-08-05T16:18:47.14
IV.RUFI.EHN. ML:1.2 8.968975E-5 0.32 AML other m 2020-08-05T16:18:47.03
IV.BRIS.HHE. ML:1.5 0.0001551802 0.2432 AML other m 2020-08-05T16:18:48.58
IV.SEI.HHE. ML:1.4 9.709033E-5 0.4736 AML other m 2020-08-05T16:18:54.84
IV.SEI.HHN. ML:1.5 0.00013461695 0.32 AML other m 2020-08-05T16:18:52.76
IV.VISG.HHE. ML:1 3.3171655E-5 0.3584 AML other m 2020-08-05T16:18:53.34
IV.VISG.HHN. ML:1 3.288995E-5 0.1024 AML other m 2020-08-05T16:18:51.07
IV.CAFI.HHE. ML:1 1.692959E-5 0.5376 AML other m 2020-08-05T16:19:02.76
IV.CAFI.HHN. ML:1 1.5485156E-5 0.4608 AML other m 2020-08-05T16:19:03.35
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