Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 22-01-2020 and time 11:43:20 (Italy) in region 2 km N Santa Sofia (FC)

A magnitude ML 1.5 earthquake occured in region: 2 km N Santa Sofia (FC), on

  • 22-01-2020 10:43:20 (UTC)
  • 22-01-2020 11:43:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.97, 11.9 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
Santa Sofia FC 2 4136 4136
Galeata FC 4 2516 6652
Civitella di Romagna FC 6 3786 10438
Premilcuore FC 10 799 11237
Portico e San Benedetto FC 12 756 11993
Rocca San Casciano FC 12 1910 13903
Bagno di Romagna FC 13 6026 19929
Predappio FC 17 6346 26275
Dovadola FC 17 1653 27928
Tredozio FC 18 1212 29140
Sarsina FC 20 3446 32586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km SW of Forlì (117913 inhabitants)
33 Km SW of Cesena (96758 inhabitants)
36 Km S of Faenza (58541 inhabitants)
46 Km SE of Imola (69797 inhabitants)
54 Km W of Rimini (147750 inhabitants)
56 Km N of Arezzo (99543 inhabitants)
56 Km SW of Ravenna (159116 inhabitants)
56 Km E of Firenze (382808 inhabitants)
62 Km E of Scandicci (50609 inhabitants)
65 Km E of Prato (191150 inhabitants)
74 Km SE of Bologna (386663 inhabitants)
79 Km E of Pistoia (90315 inhabitants)
81 Km W of Pesaro (94582 inhabitants)
85 Km NE of Siena (53903 inhabitants)
91 Km W of Fano (60888 inhabitants)
99 Km S of Ferrara (133155 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 1.5 2020-01-22
10:43:20		 43.97 11.9 9 2020-07-18
21:08:20		 Bollettino Sismico Italiano INGV 76591131
Reviewed
Rev100 		ML 1.5 2020-01-22
10:43:20		 43.96 11.9 9 2020-01-22
10:51:57		 Sala Sismica INGV-Roma 75721711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-22 10:43:20 ± 0.12
Latitude 43.97 ± 0.00
Longitude 11.90 ± 0.01
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 76591131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 770
Semi-minor axis of confidence ellipse (meter) 80
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 770
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 163
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.07285
Epicentral distance of station farthest from the epicenter (degree) 0.4029
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 75721711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-22 10:51:57

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 76591131
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-06 15:13:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PARC.HHZ. 2020-01-22T10:43:35.60 0.6 undecidable manual S 142 0.3993 50 0.42 44
IV.VISG.HHZ. 2020-01-22T10:43:35.94 0.6 undecidable manual S 304 0.4029 50 0.67 41
IV.SEI.HHZ. 2020-01-22T10:43:35.66 0.6 undecidable manual S 283 0.4002 50 0.46 44
IV.RONT.HHZ. 2020-01-22T10:43:34.06 0.6 undecidable manual S 275 0.3381 50 0.69 41
IV.CRE.HHZ. 2020-01-22T10:43:33.84 0.6 undecidable manual S 174 0.3489 50 0.16 47
IV.RUFI.EHZ. 2020-01-22T10:43:32.39 0.6 undecidable manual S 246 0.3103 50 -0.14 48
IV.BRIS.HHZ. 2020-01-22T10:43:32.08 0.3 undecidable manual S 339 0.2761 106 0.58 65
IV.RINC.HHZ. 2020-01-22T10:43:29.76 0.6 undecidable manual S 250 0.2266 110 0.06 49
IV.SEI.HHZ. 2020-01-22T10:43:28.71 0.1 undecidable manual P 283 0.4002 50 -0.24 92
IV.PARC.HHZ. 2020-01-22T10:43:28.83 0.3 undecidable manual P 142 0.3993 50 -0.11 71
IV.CRE.HHZ. 2020-01-22T10:43:28.07 0.3 undecidable manual P 174 0.3489 50 0 73
IV.ASQU.HHZ. 2020-01-22T10:43:28.39 0.3 undecidable manual S 206 0.188 113 0.09 74
IV.VISG.HHZ. 2020-01-22T10:43:28.60 0.3 undecidable manual P 304 0.4029 50 -0.4 67
IV.LMD.HHZ. 2020-01-22T10:43:27.91 0.3 undecidable manual S 309 0.179 114 -0.07 74
IV.RUFI.EHZ. 2020-01-22T10:43:27.01 0.1 positive manual P 246 0.3103 50 -0.4 90
IV.RONT.HHZ. 2020-01-22T10:43:27.67 0.1 undecidable manual P 275 0.3381 50 -0.22 93
IV.BRIS.HHZ. 2020-01-22T10:43:26.75 0.1 undecidable manual P 339 0.2761 106 -0.07 97
IV.RINC.HHZ. 2020-01-22T10:43:25.64 0.1 positive manual P 250 0.2266 110 -0.14 97
IV.ASQU.HHZ. 2020-01-22T10:43:24.95 0.1 positive manual P 206 0.188 113 -0.02 100
IV.LMD.HHZ. 2020-01-22T10:43:24.41 0.1 positive manual P 309 0.179 114 -0.38 93
IV.SFI.EHZ. 2020-01-22T10:43:24.81 0.1 undecidable manual S 213 0.0728 138 0.18 99
IV.SFI.EHZ. 2020-01-22T10:43:23.00 0.1 positive manual P 213 0.0728 138 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHE. ML:1.8 0.0008667493 0.1024 AML other m 2020-01-22T10:43:24.87
IV.SFI.HNE. ML:1.8 0.00089238565 0.0768 AML other m 2020-01-22T10:43:24.87
IV.SFI.HNN. ML:1.7 0.0007425314 0.1408 AML other m 2020-01-22T10:43:24.98
IV.SFI.EHN. ML:1.7 0.0007460678 0.1408 AML other m 2020-01-22T10:43:24.98
IV.LMD.HHE. ML:1.4 0.0001781891 0.2176 AML other m 2020-01-22T10:43:28.06
IV.ASQU.HHE. ML:1.3 0.00013539585 0.2176 AML other m 2020-01-22T10:43:28.52
IV.LMD.HHN. ML:1.3 0.00015087035 0.16 AML other m 2020-01-22T10:43:29.02
IV.BRIS.HHE. ML:1.6 0.0001933278 0.32 AML other m 2020-01-22T10:43:32.25
IV.BRIS.HHN. ML:1.6 0.00017971226 0.1984 AML other m 2020-01-22T10:43:32.36
IV.RUFI.EHN. ML:1.1 5.508627E-5 0.2624 AML other m 2020-01-22T10:43:32.89
IV.CRE.HHN. ML:1.4 0.00010081289 0.3008 AML other m 2020-01-22T10:43:34.04
IV.CRE.HHE. ML:1 3.7232045E-5 0.2624 AML other m 2020-01-22T10:43:34.56
IV.RONT.HHE. ML:1.5 0.00011154366 0.16 AML other m 2020-01-22T10:43:35.52
IV.SEI.HHN. ML:1.7 0.000156220995 0.3648 AML other m 2020-01-22T10:43:36.04
IV.VISG.HHN. ML:0.8 2.0964363E-5 0.1024 AML other m 2020-01-22T10:43:36.84
IV.VISG.HHE. ML:0.8 2.05031325E-5 0.2176 AML other m 2020-01-22T10:43:37.46
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