Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 10-06-2021 and time 12:57:10 (Italy) in region 8 km NE Forlì (FC)

A magnitude ML 1.6 earthquake occured in region: 8 km NE Forlì (FC), on

  • 10-06-2021 10:57:10 (UTC)
  • 10-06-2021 12:57:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2620, 12.1260 at 21 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
Forlì FC 8 117913 117913
Forlimpopoli FC 8 13290 131203
Bertinoro FC 13 11059 142262
Russi RA 14 12247 154509
Meldola FC 16 9970 164479
Cesena FC 17 96758 261237
Castrocaro Terme e Terra del Sole FC 17 6426 267663
Cervia RA 18 28940 296603
Ravenna RA 18 159116 455719
Faenza RA 19 58541 514260
Cotignola RA 20 7474 521734

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km NE of Forlì (117913 inhabitants)
17 Km NW of Cesena (96758 inhabitants)
18 Km SW of Ravenna (159116 inhabitants)
19 Km E of Faenza (58541 inhabitants)
34 Km E of Imola (69797 inhabitants)
42 Km NW of Rimini (147750 inhabitants)
67 Km E of Bologna (386663 inhabitants)
74 Km NW of Pesaro (94582 inhabitants)
75 Km SE of Ferrara (133155 inhabitants)
85 Km NW of Fano (60888 inhabitants)
89 Km NE of Firenze (382808 inhabitants)
91 Km N of Arezzo (99543 inhabitants)
92 Km E of Prato (191150 inhabitants)
94 Km S of Rovigo (51867 inhabitants)
94 Km NE of Scandicci (50609 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 1.6 2021-06-10
10:57:10		 44.2625 12.1257 21 2021-12-29
11:12:37		 Bollettino Sismico Italiano INGV 96559111
Reviewed
Rev100 		ML 1.6 2021-06-10
10:57:10		 44.2772 12.1287 21 2021-06-10
11:06:02		 Sala Sismica INGV-Roma 91021491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-10 10:57:10 ± 0.3
Latitude 44.2625 ± 0.0189
Longitude 12.1257 ± 0.0289
Depth (km) 21 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96559111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2374
Semi-minor axis of confidence ellipse (meter) 1844
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 2370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 174
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.14394
Number of stations at which the event was observed 46
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 96559111
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-14 16:28:08

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 91021491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-10 11:06:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTGR.HHZ. 2021-06-10T10:58:59.16 3.0 positive manual Pg 15.01 0
IV.TREM.HHZ. 2021-06-10T10:58:54.31 3.0 undecidable manual Sg 13.65 0
IV.OVO.HHZ. 2021-06-10T10:58:51.95 3.0 undecidable manual Sn -2.63 0
IV.ENIC.HNZ. 2021-06-10T10:58:49.61 3.0 positive manual Pn -2.61 0
IV.EMPL.HHZ. 2021-06-10T10:58:47.99 3.0 positive manual Pn -3.44 0
GU.IMI.HHZ. 2021-06-10T10:58:46.97 3.0 undecidable manual Sg 10.55 0
IV.PIPA.HHZ. 2021-06-10T10:58:36.54 3.0 negative manual Pn -0.97 0
IX.STN3.HHZ.02 2021-06-10T10:58:35.78 3.0 undecidable manual Pg 17.030001 0
IV.SELL.HHZ. 2021-06-10T10:58:34.37 3.0 negative manual Pn -7.87 0
IV.INTR.HNZ. 2021-06-10T10:58:33.27 3.0 undecidable manual Sg 8.6 0
IV.MCEL.HHZ. 2021-06-10T10:58:31.86 3.0 negative manual Pg 9.89 0
IV.MTMR.HNZ. 2021-06-10T10:58:19.20 3.0 undecidable manual Pg 8.56 0
IV.AGLI.HHZ. 2021-06-10T10:58:18.63 3.0 undecidable manual Pg 9.54 0
IV.SLCN.HHZ. 2021-06-10T10:58:17.50 3.0 undecidable manual Pn -2.76 0
IV.CELB.HHZ. 2021-06-10T10:58:17.14 3.0 undecidable manual Sg 4.98 0
IV.RCAV.EHZ. 2021-06-10T10:58:14.32 3.0 undecidable manual Sn -7.92 0
IV.SRES.HHZ. 2021-06-10T10:58:11.25 3.0 undecidable manual Sg -0.25 0
IV.VAGA.HHZ. 2021-06-10T10:58:08.06 3.0 negative manual Pg 7.25 0
IV.PCN.EHZ. 2021-06-10T10:58:07.66 3.0 undecidable manual Sn 0.96 0
IV.CAPR.HNZ. 2021-06-10T10:58:05.70 3.0 undecidable manual Sn -5.39 0
IX.MNT3.HHZ.02 2021-06-10T10:58:04.11 3.0 undecidable manual Pn -7.51 0
IV.POFI.HHZ. 2021-06-10T10:58:04.04 3.0 undecidable manual Pg 9.27 0
IV.LNSS.HHZ. 2021-06-10T10:58:02.84 3.0 undecidable manual Sn -2.17 0
IV.MAGA.HHZ. 2021-06-10T10:58:02.48 3.0 undecidable manual Sn -2.76 0
IV.MC2.EHZ. 2021-06-10T10:58:01.85 3.0 undecidable manual Sg 2.67 0
IV.VITU.HHZ. 2021-06-10T10:57:58.89 3.0 positive manual Pn -6.66 0
IV.OFFI.HHZ. 2021-06-10T10:57:58.20 3.0 undecidable manual Sn -5.38 0
GU.IMI.HHZ. 2021-06-10T10:57:56.79 3.0 undecidable manual Pn -1.81 0
IV.RIBO.EHZ.01 2021-06-10T10:57:52.97 3.0 undecidable manual Sn -6.27 0
IV.TST02.HHZ. 2021-06-10T10:57:51.74 3.0 undecidable manual Pn -3.24 0
IV.MF5.EHZ. 2021-06-10T10:57:51.81 3.0 undecidable manual Sn -8.32 0
IV.NDIM.HNZ. 2021-06-10T10:57:49.77 3.0 undecidable manual Sg 2.92 0
IV.RCAV.EHZ. 2021-06-10T10:57:46.83 3.0 undecidable manual Pn -3.8 0
IV.CAVE.HHZ. 2021-06-10T10:57:45.61 3.0 undecidable manual S 0.58 0
NI.VINO.HHZ. 2021-06-10T10:57:44.82 3.0 negative manual Pg 0.04 0
IV.ZONE.HHZ. 2021-06-10T10:57:42.03 3.0 undecidable manual Pn -2.19 0
IV.GAVE.EHZ. 2021-06-10T10:57:41.14 3.0 undecidable manual Pn 1.83 0
IV.RIBO.EHZ.01 2021-06-10T10:57:35.77 3.0 undecidable manual P -1.94 0
IV.TEOL.HHZ. 2021-06-10T10:57:32.00 0.6 undecidable manual P 344 126.9729 95 0.4 39
IV.SFI.EHZ. 2021-06-10T10:57:26.23 0.3 undecidable manual S 209 45.5211 107 0.69 65
IV.PIEI.HHZ. 2021-06-10T10:57:25.86 0.6 undecidable manual P 158 87.0462 98 0.38 43
IV.LMD.HHZ. 2021-06-10T10:57:24.39 0.3 undecidable manual S 238 39.1275 110 0.47 70
IV.RUFI.EHE. 2021-06-10T10:57:22.05 0.3 undecidable manual P 226 68.0763 100 -0.54 64
IV.SEI.HHZ. 2021-06-10T10:57:22.26 0.3 undecidable manual P 250 65.2902 101 0.09 72
IV.BRIS.HHZ. 2021-06-10T10:57:21.62 0.3 undecidable manual S 262 28.8489 118 0.2 75
IV.MTRZ.HHN. 2021-06-10T10:57:21.32 0.3 undecidable manual P 276 55.8996 103 0.56 65
IV.CPGN.HNZ. 2021-06-10T10:57:21.13 0.6 undecidable manual P 163 53.502 104 0.74 41
IV.ASQU.HHZ. 2021-06-10T10:57:20.82 0.3 undecidable manual P 208 58.1973 102 -0.28 69
IV.SFI.EHZ. 2021-06-10T10:57:18.71 0.1 undecidable manual P 209 45.5211 107 -0.49 90
IV.LMD.HHZ. 2021-06-10T10:57:17.80 0.3 undecidable manual P 238 39.1275 110 -0.47 69
IV.BRSN.HNN. 2021-06-10T10:57:17.44 0.3 undecidable manual S 304 4.3956 167 0.25 77
IV.BRIS.HHZ. 2021-06-10T10:57:16.63 0.1 undecidable manual P 262 28.8489 118 -0.19 100
IV.BRSN.HNN. 2021-06-10T10:57:13.74 0.1 undecidable manual P 304 4.3956 167 -0.64 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHE. ML:1.7 0.00020150000000000002 0.72 AML other m 2021-06-10T10:57:24.96
IV.LMD.HHE. ML:1.8 0.000174 0.28 AML other m 2021-06-10T10:57:25.82
IV.BRIS.HHN. ML:1.6 0.0001625 1.54 AML other m 2021-06-10T10:57:27.00
IV.SFI.EHN. ML:1.4 0.00006825 0.38 AML other m 2021-06-10T10:57:27.19
IV.LMD.HHN. ML:1.6 0.00013350000000000002 1 AML other m 2021-06-10T10:57:27.71
IV.SFI.EHE. ML:1.4 0.0000599 0.62 AML other m 2021-06-10T10:57:28.69
IV.ASQU.HHN. ML:1.3 0.0000413 0.66 AML other m 2021-06-10T10:57:32.45
IV.ASQU.HHE. ML:1.4 0.00004765 1.26 AML other m 2021-06-10T10:57:33.09
IV.SEI.HHE. ML:1.7 0.00008760000000000002 0.34 AML other m 2021-06-10T10:57:35.25
IV.PIEI.HHN. ML:1.4 0.00002995 1.46 AML other m 2021-06-10T10:57:40.88
IV.SEI.HHN. ML:1.8 0.00009900000000000001 0.52 AML other m 2021-06-10T10:57:41.14
IV.PIEI.HHE. ML:1.7 0.000058899999999999995 0.36 AML other m 2021-06-10T10:57:43.36
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