Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 27-06-2023 and time 20:53:16 (Italy) in region 4 km E Premilcuore (FC)

A magnitude ML 1.9 earthquake occured in region: 4 km E Premilcuore (FC), on

  • 27-06-2023 18:53:16 (UTC)
  • 27-06-2023 20:53:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9840, 11.8240 at 28 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
Premilcuore FC 4 799 799
Portico e San Benedetto FC 6 756 1555
Galeata FC 7 2516 4071
Santa Sofia FC 8 4136 8207
Rocca San Casciano FC 9 1910 10117
Civitella di Romagna FC 10 3786 13903
Tredozio FC 12 1212 15115
Dovadola FC 16 1653 16768
San Godenzo FI 18 1167 17935
Predappio FC 18 6346 24281
Bagno di Romagna FC 19 6026 30307
Modigliana FC 19 4560 34867
Marradi FI 20 3139 38006

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SW of Forlì (117913 inhabitants)
34 Km S of Faenza (58541 inhabitants)
38 Km W of Cesena (96758 inhabitants)
42 Km S of Imola (69797 inhabitants)
51 Km E of Firenze (382808 inhabitants)
57 Km SW of Ravenna (159116 inhabitants)
57 Km E of Scandicci (50609 inhabitants)
58 Km N of Arezzo (99543 inhabitants)
59 Km E of Prato (191150 inhabitants)
60 Km W of Rimini (147750 inhabitants)
69 Km SE of Bologna (386663 inhabitants)
73 Km E of Pistoia (90315 inhabitants)
84 Km NE of Siena (53903 inhabitants)
88 Km W of Pesaro (94582 inhabitants)
96 Km S of Ferrara (133155 inhabitants)
97 Km W of Fano (60888 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 1.9 2023-06-27
18:53:16		 43.9843 11.8243 28 2023-06-27
19:28:02		 Sala Sismica INGV-Roma 118764751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-06-27 18:53:16 ± 0.15
Latitude 43.9843 ± 0.0099
Longitude 11.8243 ± 0.0112
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 118764751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1132
Semi-minor axis of confidence ellipse (meter) 523
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 219
Circular confidence region, given by single value of horizontal uncertainty (meter) 1130.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 175
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.08094
Epicentral distance of station farthest from the epicenter (degree) 0.68169
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 118764751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-06-27 19:28:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VISG.HHZ. 2023-06-27T18:53:30.40 0.3 undecidable manual S 306 38.4282 120 -0.21 70
IV.PIEI.HHZ. 2023-06-27T18:53:30.84 0.6 undecidable manual P 131 75.6687 105 0.79 36
IV.CSNT.HHZ. 2023-06-27T18:53:29.69 0.3 undecidable manual P 217 71.0733 106 0.31 65
IV.CAFI.HHZ. 2023-06-27T18:53:29.56 0.6 undecidable manual P 171 73.5708 105 -0.19 45
IV.CRMI.HHZ. 2023-06-27T18:53:29.15 0.1 undecidable manual P 253 70.6737 106 -0.18 89
IV.RUFI.EHZ. 2023-06-27T18:53:28.92 0.3 undecidable manual S 237 29.9478 128 0.21 72
IV.PE3.EHN. 2023-06-27T18:53:27.94 0.3 undecidable manual P 121 62.5929 108 -0.19 69
IV.VMGN.HHZ. 2023-06-27T18:53:27.74 0.3 undecidable manual S 262 23.5542 135 0.32 71
IV.RINC.EHZ. 2023-06-27T18:53:26.65 0.3 undecidable manual S 238 20.4684 139 -0.22 72
IV.SFI.EHZ. 2023-06-27T18:53:25.40 0.3 undecidable manual S 168 8.9799 160 0.09 75
IV.SEI.HHZ. 2023-06-27T18:53:25.09 0.3 undecidable manual P 282 37.9287 120 0.45 68
IV.CRE.HHZ. 2023-06-27T18:53:24.98 0.1 undecidable manual P 166 41.8248 118 -0.19 95
IV.VISG.HHZ. 2023-06-27T18:53:24.65 0.1 undecidable manual P 306 38.4282 120 -0.06 97
IV.RUFI.EHZ. 2023-06-27T18:53:23.63 0.3 undecidable manual P 237 29.9478 128 0.01 75
IV.VMGN.HHZ. 2023-06-27T18:53:22.79 0.3 undecidable manual P 262 23.5542 135 -0.08 74
IV.RINC.EHZ. 2023-06-27T18:53:22.63 0.1 undecidable manual P 238 20.4684 139 0.08 100
IV.SFI.EHZ. 2023-06-27T18:53:21.38 0.1 undecidable manual P 168 8.9799 160 -0.27 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHN. ML:2.0 0.000489 1.02 AML other m 2023-06-27T18:53:30.15
IV.SFI.HNN. ML:2.0 0.0005800000000000001 1.02 AML other m 2023-06-27T18:53:30.15
IV.SFI.EHE. ML:2.0 0.0005250000000000001 1.28 AML other m 2023-06-27T18:53:30.83
IV.SFI.HNE. ML:2.0 0.0005110000000000001 1.28 AML other m 2023-06-27T18:53:30.83
IV.VMGN.HHE. ML:1.9 0.000297 1.36 AML other m 2023-06-27T18:53:32.05
IV.VMGN.HHN. ML:1.8 0.000228 1.62 AML other m 2023-06-27T18:53:32.87
IV.RUFI.EHN. ML:2.2 0.0005645 0.3 AML other m 2023-06-27T18:53:33.01
IV.RUFI.EHE. ML:1.8 0.000241 0.44 AML other m 2023-06-27T18:53:33.43
IV.SEI.HHN. ML:2.1 0.000406 0.28 AML other m 2023-06-27T18:53:35.69
IV.VISG.HHE. ML:1.3 0.0000597 0.36 AML other m 2023-06-27T18:53:36.40
IV.CRE.HHN. ML:2.2 0.000437 0.74 AML other m 2023-06-27T18:53:36.49
IV.VISG.HHN. ML:1.6 0.000127 0.64 AML other m 2023-06-27T18:53:36.86
IV.CRE.HHE. ML:2.0 0.00027100000000000003 0.24 AML other m 2023-06-27T18:53:36.97
IV.SEI.HHE. ML:2.1 0.0003745 1.68 AML other m 2023-06-27T18:53:37.14
IV.MTRZ.HHN. ML:2.1 0.0002785 0.56 AML other m 2023-06-27T18:53:43.61
IV.CSNT.HHE. ML:1.6 0.0000568 0.44 AML other m 2023-06-27T18:53:44.31
IV.CSNT.HHN. ML:1.8 0.00009240000000000001 0.34 AML other m 2023-06-27T18:53:44.79
IV.MTRZ.HHE. ML:2.1 0.0002765 0.52 AML other m 2023-06-27T18:53:45.52
IV.CAFI.HHE. ML:1.6 0.0000625 0.78 AML other m 2023-06-27T18:53:45.98
IV.CAFI.HHN. ML:1.6 0.00005565 0.24 AML other m 2023-06-27T18:53:47.53
IV.MURB.HHN. ML:2.2 0.00016499999999999997 1.62 AML other m 2023-06-27T18:53:58.88
IV.MURB.HHE. ML:2.2 0.00013749999999999998 0.44 AML other m 2023-06-27T18:54:00.31
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