Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 13-01-2021 and time 14:34:54 (Italy) in region 5 km NW Castrocaro Terme e Terra del Sole (FC)

A magnitude ML 1.4 earthquake occured in region: 5 km NW Castrocaro Terme e Terra del Sole (FC), on

  • 13-01-2021 13:34:54 (UTC)
  • 13-01-2021 14:34:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2100, 11.9050 at 25 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
Castrocaro Terme e Terra del Sole FC 5 6426 6426
Faenza RA 9 58541 64967
Dovadola FC 10 1653 66620
Modigliana FC 11 4560 71180
Brisighella RA 11 7639 78819
Forlì FC 11 117913 196732
Predappio FC 13 6346 203078
Castel Bolognese RA 15 9554 212632
Meldola FC 16 9970 222602
Riolo Terme RA 16 5720 228322
Rocca San Casciano FC 17 1910 230232
Solarolo RA 17 4488 234720
Forlimpopoli FC 18 13290 248010
Tredozio FC 19 1212 249222
Bertinoro FC 20 11059 260281
Cotignola RA 20 7474 267755

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km S of Faenza (58541 inhabitants)
11 Km W of Forlì (117913 inhabitants)
22 Km SE of Imola (69797 inhabitants)
28 Km W of Cesena (96758 inhabitants)
33 Km SW of Ravenna (159116 inhabitants)
55 Km SE of Bologna (386663 inhabitants)
55 Km W of Rimini (147750 inhabitants)
71 Km NE of Firenze (382808 inhabitants)
73 Km SE of Ferrara (133155 inhabitants)
74 Km E of Prato (191150 inhabitants)
77 Km NE of Scandicci (50609 inhabitants)
83 Km N of Arezzo (99543 inhabitants)
85 Km E of Pistoia (90315 inhabitants)
87 Km W of Pesaro (94582 inhabitants)
92 Km SE of Modena (184973 inhabitants)
96 Km S of Rovigo (51867 inhabitants)
98 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 1.4 2021-01-13
13:34:54		 44.2102 11.9047 25 2021-07-12
16:54:58		 Bollettino Sismico Italiano INGV 86966421
Reviewed
Rev100 		ML 1.6 2021-01-13
13:34:54		 44.2202 11.9143 28 2021-01-13
13:47:58		 Sala Sismica INGV-Roma 86225541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-13 13:34:54 ± 0.2
Latitude 44.2102 ± 0.0063
Longitude 11.9047 ± 0.0151
Depth (km) 25 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86966421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1182
Semi-minor axis of confidence ellipse (meter) 566
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 70
Circular confidence region, given by single value of horizontal uncertainty (meter) 1180.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 195
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.09982
Epicentral distance of station farthest from the epicenter (degree) 0.61064
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 7
Type of magnitude ML
Reference to an origin 86966421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-09 11:20:25

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 86225541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-13 13:47:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SEI.HHZ. 2021-01-13T13:35:10.16 0.6 undecidable manual S 249 46.8198 112 0.06 49
IV.ASQU.HHZ. 2021-01-13T13:35:10.48 0.6 undecidable manual S 191 46.8198 112 0.39 46
IV.RINC.HHZ. 2021-01-13T13:35:09.60 0.6 undecidable manual S 214 43.0236 114 0.43 46
IV.MTRZ.HHE. 2021-01-13T13:35:08.82 0.6 undecidable manual S 287 39.8268 116 0.44 45
IV.SFI.EHZ. 2021-01-13T13:35:07.61 0.6 undecidable manual S 188 34.2435 120 0.54 46
IV.PARC.HHE. 2021-01-13T13:35:06.86 0.6 undecidable manual P 157 67.7766 104 0.32 45
IV.CRE.HHZ. 2021-01-13T13:35:06.40 0.1 undecidable manual P 177 65.6898 105 0.17 93
IV.LMD.HHZ. 2021-01-13T13:35:04.04 0.3 undecidable manual S 227 21.5673 135 -0.33 73
IV.IMOL.HNE. 2021-01-13T13:35:04.52 0.6 undecidable manual S 322 20.9679 136 0.25 49
IV.SEI.HHZ. 2021-01-13T13:35:03.24 0.3 undecidable manual P 249 46.8198 112 -0.22 71
IV.ASQU.HHZ. 2021-01-13T13:35:03.35 0.1 undecidable manual P 191 46.8198 112 -0.11 96
IV.BRIS.HHZ. 2021-01-13T13:35:02.70 0.6 undecidable manual S 278 11.0778 154 -0.03 53
IV.MTRZ.HHE. 2021-01-13T13:35:02.42 0.1 undecidable manual P 287 39.8268 116 -0.05 100
IV.RINC.HHZ. 2021-01-13T13:35:02.78 0.1 undecidable manual P 214 43.0236 114 -0.15 97
IV.SFI.EHZ. 2021-01-13T13:35:01.61 0.1 negative manual P 188 34.2435 120 -0.1 99
IV.IMOL.HNE. 2021-01-13T13:35:00.39 0.3 undecidable manual P 322 20.9679 136 0.29 73
IV.LMD.HHZ. 2021-01-13T13:34:59.62 0.3 undecidable manual P 227 21.5673 135 -0.54 69
IV.BRIS.HHZ. 2021-01-13T13:34:58.91 0.1 positive manual P 278 11.0778 154 -0.3 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHE. ML:1.5 0.000169 1.54 AML other m 2021-01-13T13:35:02.10
IV.BRIS.HHN. ML:1.5 0.00019548855 0.3392 AML other m 2021-01-13T13:35:03.21
IV.SFI.EHE. ML:1.4 0.000091495955 0.3392 AML other m 2021-01-13T13:35:07.93
IV.SFI.EHN. ML:1.2 0.000051427260000000005 0.16 AML other m 2021-01-13T13:35:08.43
IV.ASQU.HHN. ML:1.4 0.00006125 0.62 AML other m 2021-01-13T13:35:11.18
IV.ASQU.HHE. ML:1.2 0.000039750000000000004 0.2 AML other m 2021-01-13T13:35:12.16
IV.RINC.HHE. ML:1.4 0.00006964544 0.3008 AML other m 2021-01-13T13:35:10.15
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