Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 27-07-2022 and time 11:12:11 (Italy) in region 3 km SE Rocca San Casciano (FC)

A magnitude ML 1.2 earthquake occured in region: 3 km SE Rocca San Casciano (FC), on

  • 27-07-2022 09:12:11 (UTC)
  • 27-07-2022 11:12:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.0460, 11.8790 at 9 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Rocca San Casciano FC 3 1910 1910
Galeata FC 6 2516 4426
Civitella di Romagna FC 7 3786 8212
Portico e San Benedetto FC 8 756 8968
Dovadola FC 9 1653 10621
Predappio FC 10 6346 16967
Premilcuore FC 11 799 17766
Santa Sofia FC 11 4136 21902
Tredozio FC 11 1212 23114
Modigliana FC 14 4560 27674
Castrocaro Terme e Terra del Sole FC 16 6426 34100
Meldola FC 17 9970 44070

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SW of Forlì (117913 inhabitants)
27 Km S of Faenza (58541 inhabitants)
31 Km W of Cesena (96758 inhabitants)
37 Km SE of Imola (69797 inhabitants)
49 Km SW of Ravenna (159116 inhabitants)
55 Km W of Rimini (147750 inhabitants)
59 Km NE of Firenze (382808 inhabitants)
64 Km E of Scandicci (50609 inhabitants)
64 Km N of Arezzo (99543 inhabitants)
65 Km E of Prato (191150 inhabitants)
66 Km SE of Bologna (386663 inhabitants)
78 Km E of Pistoia (90315 inhabitants)
84 Km W of Pesaro (94582 inhabitants)
90 Km S of Ferrara (133155 inhabitants)
92 Km NE of Siena (53903 inhabitants)
94 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
Bulletin
Rev1000 		ML 1.2 2022-07-27
09:12:11		 44.0465 11.8788 9 2023-01-31
19:03:42		 Bollettino Sismico Italiano INGV 109632601
Reviewed
Rev100 		ML 1.0 2022-07-27
09:12:11		 44.0355 11.8542 9 2022-07-27
09:20:27		 Sala Sismica INGV-Roma 107744931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-07-27 09:12:11 ± 0.09
Latitude 44.0465 ± 0.0045
Longitude 11.8788 ± 0.0075
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 109632601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 610
Semi-minor axis of confidence ellipse (meter) 300
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 58
Circular confidence region, given by single value of horizontal uncertainty (meter) 610.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 17
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) 0.50362
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 109632601
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-09-12 11:16:44

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 107744931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-07-27 09:20:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
TV.GMB1.HHZ. 2022-07-27T09:13:56.86 3.0 positive manual Pg 19.73 0
IV.MRB1.HHZ. 2022-07-27T09:13:45.12 3.0 undecidable manual Sn 5.24 0
CH.MUGIO.HHZ. 2022-07-27T09:13:45.00 3.0 undecidable manual Sg 13.09 0
IV.BRMO.HHZ. 2022-07-27T09:13:38.40 3.0 undecidable manual Sg 8.61 0
IV.ERC.EHZ. 2022-07-27T09:13:33.53 3.0 undecidable manual Pn 3.62 0
CH.DAVOX.HHZ. 2022-07-27T09:13:32.85 3.0 undecidable manual Sn -7.3 0
IV.IVGP.HHZ. 2022-07-27T09:13:30.16 3.0 negative manual Pn -0.46 0
IV.SPS2.HHZ. 2022-07-27T09:13:29.57 3.0 undecidable manual Pn 2.97 0
IV.GATE.HHZ. 2022-07-27T09:13:26.93 3.0 undecidable manual Sn -4.94 0
CR.STON.BHZ. 2022-07-27T09:13:24.74 3.0 undecidable manual Pg 15.96 0
GU.SATI.HNZ. 2022-07-27T09:13:02.82 3.0 undecidable manual Pn 1.1 0
GU.RORO.HHZ. 2022-07-27T09:13:01.14 3.0 positive manual Pg 9.65 0
CH.MUGIO.HHZ. 2022-07-27T09:12:57.22 3.0 positive manual Pn 3.92 0
IV.RIBO.EHZ.01 2022-07-27T09:12:45.72 3.0 undecidable manual S 1.46 0
IV.CRND.HNZ. 2022-07-27T09:12:40.18 3.0 undecidable manual Pn 0.41 0
IV.CIMA.HNZ. 2022-07-27T09:12:28.53 3.0 undecidable manual P 0.31 0
IV.PARC.HHE. 2022-07-27T09:12:28.34 0.6 undecidable manual S 147 52.7028 50 0.29 46
IV.BOSL.HHE. 2022-07-27T09:12:25.43 0.6 undecidable manual S 253 42.2244 50 0.16 48
IV.VISG.HHZ. 2022-07-27T09:12:24.50 0.3 undecidable manual S 294 38.7279 50 0.17 73
IV.RUFI.EHZ. 2022-07-27T09:12:23.72 0.6 undecidable manual S 232 37.5291 50 -0.28 47
IV.PARC.HHE. 2022-07-27T09:12:21.12 0.1 undecidable manual P 147 52.7028 50 0.25 93
IV.MOCL.EHZ. 2022-07-27T09:12:21.55 0.1 undecidable manual P 266 55.8996 50 0.19 93
IV.BOSL.HHE. 2022-07-27T09:12:19.33 0.3 undecidable manual P 253 42.2244 50 0.06 74
IV.BRIS.HHZ. 2022-07-27T09:12:19.50 0.3 undecidable manual S 336 21.6672 113 0.28 73
IV.RSM2.HHE. 2022-07-27T09:12:19.45 0.6 undecidable manual P 105 46.8198 50 -0.51 44
IV.IMOL.HNZ. 2022-07-27T09:12:18.07 0.1 undecidable manual P 343 36.3414 50 -0.29 95
IV.VISG.HHZ. 2022-07-27T09:12:18.55 0.3 undecidable manual P 294 38.7279 50 -0.18 72
IV.RUFI.EHZ. 2022-07-27T09:12:18.36 0.6 undecidable manual P 232 37.5291 50 -0.17 48
IV.SFI.EHZ. 2022-07-27T09:12:17.53 0.6 undecidable manual S 189 15.9729 120 0.11 51
IV.LMD.HHZ. 2022-07-27T09:12:16.83 0.3 undecidable manual S 284 14.0748 123 -0.05 78
IV.BRIS.HHZ. 2022-07-27T09:12:15.96 0.3 positive manual P 336 21.6672 113 0.19 74
IV.SFI.EHZ. 2022-07-27T09:12:14.45 1.0 undecidable manual P 189 15.9729 120 -0.29 25
IV.LMD.HHZ. 2022-07-27T09:12:14.21 0.1 undecidable manual P 284 14.0748 123 -0.21 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:1.6 0.000382 0.16 AML other m 2022-07-27T09:12:17.33
IV.SFI.EHE. ML:1.2 0.000145 0.18 AML other m 2022-07-27T09:12:17.56
IV.LMD.HHN. ML:1.4 0.000264 0.54 AML other m 2022-07-27T09:12:17.78
IV.SFI.EHN. ML:1.0 0.00008724999999999999 0.58 AML other m 2022-07-27T09:12:18.25
IV.BRIS.HHE. ML:1.1 0.00008525 0.12 AML other m 2022-07-27T09:12:20.24
IV.BRIS.HHN. ML:0.9 0.000051250000000000006 0.46 AML other m 2022-07-27T09:12:20.63
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