Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 25-01-2021 and time 03:15:15 (Italy) in region 6 km NE Bagno di Romagna (FC)

A magnitude ML 1.0 earthquake occured in region: 6 km NE Bagno di Romagna (FC), on

  • 25-01-2021 02:15:15 (UTC)
  • 25-01-2021 03:15:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9050, 12.0230 at 10 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
Bagno di Romagna FC 6 6026 6026
Sarsina FC 10 3446 9472
Santa Sofia FC 10 4136 13608
Verghereto FC 12 1907 15515
Civitella di Romagna FC 13 3786 19301
Galeata FC 14 2516 21817
Mercato Saraceno FC 15 6886 28703
Sant'Agata Feltria RN 16 2151 30854
Casteldelci RN 16 407 31261

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km SW of Cesena (96758 inhabitants)
36 Km S of Forlì (117913 inhabitants)
44 Km S of Faenza (58541 inhabitants)
47 Km W of Rimini (147750 inhabitants)
50 Km N of Arezzo (99543 inhabitants)
56 Km SE of Imola (69797 inhabitants)
59 Km S of Ravenna (159116 inhabitants)
63 Km E of Firenze (382808 inhabitants)
69 Km E of Scandicci (50609 inhabitants)
71 Km W of Pesaro (94582 inhabitants)
74 Km E of Prato (191150 inhabitants)
80 Km W of Fano (60888 inhabitants)
85 Km SE of Bologna (386663 inhabitants)
86 Km NE of Siena (53903 inhabitants)
89 Km E of Pistoia (90315 inhabitants)
93 Km NW of Perugia (166134 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 1.0 2021-01-25
02:15:15		 43.9048 12.023 10 2021-07-12
16:55:01		 Bollettino Sismico Italiano INGV 87779281
Reviewed
Rev100 		ML 1.0 2021-01-25
02:15:15		 43.921 12.0408 8 2021-01-25
02:34:12		 Sala Sismica INGV-Roma 86549301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-25 02:15:15 ± 0.18
Latitude 43.9048 ± 0.0072
Longitude 12.0230 ± 0.0112
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87779281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1056
Semi-minor axis of confidence ellipse (meter) 453
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 229
Circular confidence region, given by single value of horizontal uncertainty (meter) 1060.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 179
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 17
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37592
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 87779281
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-05 14:03:34

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 86549301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-25 02:34:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTMR.EHZ. 2021-01-25T02:16:47.79 3.0 undecidable manual Sn -1.75 0
IV.IMI.HHZ. 2021-01-25T02:16:42.11 3.0 undecidable manual Sn 6.48 0
IV.MTGR.HHZ. 2021-01-25T02:16:39.72 3.0 undecidable manual Pn -0.31 0
IV.LRP.EHZ. 2021-01-25T02:16:35.40 3.0 undecidable manual Sg 13.1 0
IV.IMI.HHZ. 2021-01-25T02:16:10.55 3.0 undecidable manual Pg 12.41 0
IV.MMUR.HNZ. 2021-01-25T02:15:43.97 3.0 undecidable manual Sg 5.99 0
GU.GRAM.HHZ. 2021-01-25T02:15:38.14 3.0 undecidable manual Pn 1.33 0
IV.RUFI.EHZ. 2021-01-25T02:15:30.05 0.3 undecidable manual S 260 41.7249 50 0.32 70
IV.SSP9.EHZ. 2021-01-25T02:15:28.73 0.3 undecidable manual S 167 37.7289 50 0.07 74
IV.PARC.HHN. 2021-01-25T02:15:27.59 0.3 undecidable manual S 149 33.2445 50 0.12 74
IV.RINC.HHN. 2021-01-25T02:15:27.87 0.6 undecidable manual S 267 33.3444 50 0.39 47
IV.LMD.HHZ. 2021-01-25T02:15:26.28 0.3 undecidable manual S 307 31.6461 50 -0.75 62
IV.CRE.HHZ. 2021-01-25T02:15:26.84 0.6 undecidable manual S 190 32.2455 50 -0.35 47
IV.RUFI.EHZ. 2021-01-25T02:15:24.06 0.1 undecidable manual P 260 41.7249 50 0.16 97
IV.BRIS.HHE. 2021-01-25T02:15:24.27 0.6 undecidable manual P 330 40.9257 50 0.49 45
IV.ASQU.HHZ. 2021-01-25T02:15:24.11 0.3 undecidable manual S 237 22.2555 115 -0.33 72
IV.SSP9.EHZ. 2021-01-25T02:15:23.20 0.3 undecidable manual P 167 37.7289 50 -0.09 74
IV.LMD.HHZ. 2021-01-25T02:15:22.03 0.3 undecidable manual P 307 31.6461 50 -0.32 71
IV.SFI.EHZ. 2021-01-25T02:15:22.06 0.3 undecidable manual S 270 14.0748 126 0.07 77
IV.RINC.HHN. 2021-01-25T02:15:22.84 0.3 undecidable manual P 267 33.3444 50 0.23 72
IV.CRE.HHZ. 2021-01-25T02:15:22.31 0.1 undecidable manual P 190 32.2455 50 -0.13 99
IV.PARC.HHN. 2021-01-25T02:15:22.58 0.3 undecidable manual P 149 33.2445 50 -0.02 76
IV.ASQU.HHZ. 2021-01-25T02:15:20.77 0.3 undecidable manual P 237 22.2555 115 -0.08 76
IV.SFI.EHZ. 2021-01-25T02:15:19.66 0.1 undecidable manual P 270 14.0748 126 0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHN. ML:0.8 0.00006374074 0.08 AML other m 2021-01-25T02:15:22.43
IV.SFI.HNE. ML:0.8 0.00006523606775 0.0912 AML other m 2021-01-25T02:15:22.53
IV.SFI.EHE. ML:0.8 0.00005878441 0.0816 AML other m 2021-01-25T02:15:22.49
IV.ASQU.HHN. ML:1.5 0.000191 0.16 AML other m 2021-01-25T02:15:24.40
IV.ASQU.HHE. ML:1.4 0.00016394999999999997 0.2 AML other m 2021-01-25T02:15:24.39
IV.CRE.HHE. ML:1.0 0.000041663941499999996 0.24 AML other m 2021-01-25T02:15:27.18
IV.LMD.HHN. ML:1.2 0.00006965 0.72 AML other m 2021-01-25T02:15:27.98
IV.LMD.HHE. ML:1.1 0.0000539 1.5 AML other m 2021-01-25T02:15:27.01
IV.CRE.HHN. ML:1.3 0.000083523715 1.5008 AML other m 2021-01-25T02:15:29.18
IV.RUFI.EHN. ML:0.9 0.000026009924999999998 0.32 AML other m 2021-01-25T02:15:30.48
IV.RUFI.EHE. ML:0.8 0.0000191641735 0.1808 AML other m 2021-01-25T02:15:30.61
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