Earthquake with magnitude of ML 1.7 on date 19-08-2021 and time 08:04:19 (Italy) in region 2 km E Predappio (FC)

A magnitude ML 1.7 earthquake occured in region: 2 km E Predappio (FC), on

  • 19-08-2021 06:04:19 (UTC)
  • 19-08-2021 08:04:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1010, 12.0030 at 37 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Predappio FC 2 6346 6346
Meldola FC 6 9970 16316
Castrocaro Terme e Terra del Sole FC 9 6426 22742
Dovadola FC 9 1653 24395
Civitella di Romagna FC 12 3786 28181
Bertinoro FC 12 11059 39240
Rocca San Casciano FC 13 1910 41150
Galeata FC 14 2516 43666
Forlimpopoli FC 14 13290 56956
Forlì FC 14 117913 174869
Modigliana FC 18 4560 179429
Santa Sofia FC 19 4136 183565
Portico e San Benedetto FC 20 756 184321
Cesena FC 20 96758 281079

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km S of Forlì (117913 inhabitants)
20 Km W of Cesena (96758 inhabitants)
23 Km SE of Faenza (58541 inhabitants)
36 Km SE of Imola (69797 inhabitants)
39 Km SW of Ravenna (159116 inhabitants)
45 Km W of Rimini (147750 inhabitants)
68 Km SE of Bologna (386663 inhabitants)
70 Km NE of Firenze (382808 inhabitants)
71 Km N of Arezzo (99543 inhabitants)
76 Km W of Pesaro (94582 inhabitants)
76 Km NE of Scandicci (50609 inhabitants)
76 Km E of Prato (191150 inhabitants)
86 Km W of Fano (60888 inhabitants)
87 Km SE of Ferrara (133155 inhabitants)
89 Km E of Pistoia (90315 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 1.7 2021-08-19
06:04:19
44.101 12.0027 37 2021-12-29
11:12:32
Bollettino Sismico Italiano INGV 95779591
Reviewed
Rev100
ML 1.5 2021-08-19
06:04:19
44.1037 12.0017 34 2021-08-19
06:22:14
Sala Sismica INGV-Roma 94362541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-19 06:04:19 ± 0.17
Latitude 44.1010 ± 0.0117
Longitude 12.0027 ± 0.0188
Depth (km) 37 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95779591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1723
Semi-minor axis of confidence ellipse (meter) 693
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 1720.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 185
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.79680
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 95779591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-23 10:05:04

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 94362541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-19 06:22:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CR.STON.BHZ. 2021-08-19T06:06:17.52 3.0 undecidable manual Sn 3.5 0
IV.SPS2.HHZ. 2021-08-19T06:06:04.20 3.0 negative manual Pg 19.83 0
GU.ROTM.HHZ. 2021-08-19T06:05:49.02 3.0 undecidable manual Sg 14.88 0
CR.STON.BHZ. 2021-08-19T06:05:41.46 3.0 undecidable manual Pg 17.24 0
IV.TOLF.HHZ. 2021-08-19T06:05:18.03 3.0 undecidable manual Sn 0.33 0
IV.QLNO.HHZ. 2021-08-19T06:05:14.13 3.0 undecidable manual Pg 13.41 0
IV.GAVE.EHZ. 2021-08-19T06:05:08.09 3.0 undecidable manual Sg 2.11 0
IV.LRP.EHZ. 2021-08-19T06:05:03.79 3.0 undecidable manual Pn 1.81 0
IV.MOMA.HHZ. 2021-08-19T06:05:02.49 3.0 undecidable manual Sg 1.19 0
IV.MCIV.CHZ. 2021-08-19T06:04:59.32 3.0 undecidable manual Sn -1.38 0
IV.ZONE.HHZ. 2021-08-19T06:04:53.55 3.0 undecidable manual Pn -0.33 0
RF.GEPF.HHZ. 2021-08-19T06:04:51.99 3.0 negative manual Pn -4.58 0
IV.CAFI.HHZ. 2021-08-19T06:04:45.80 0.1 undecidable manual S 182 85.6476 54 0.18 86
IV.MGAB.HHZ. 2021-08-19T06:04:40.73 3.0 undecidable manual Pn -0.26 0
IV.BOSL.HHZ. 2021-08-19T06:04:39.14 0.6 undecidable manual S 250 53.502 120 0.71 39
IV.RUFI.EHZ. 2021-08-19T06:04:37.43 0.1 undecidable manual S 234 49.0176 123 0.04 95
IV.VISG.HHZ. 2021-08-19T06:04:37.06 0.1 undecidable manual S 282 46.3203 125 0.27 90
IV.CPGN.EHZ. 2021-08-19T06:04:36.81 0.3 undecidable manual S 143 41.8248 128 0.97 57
IV.ATVO.HHZ. 2021-08-19T06:04:35.53 0.3 undecidable manual P 158 86.0472 54 0.79 54
IV.ASQU.HHE. 2021-08-19T06:04:35.30 0.3 undecidable manual S 207 37.8288 131 0.3 70
IV.OSSC.HHZ. 2021-08-19T06:04:35.30 0.3 undecidable manual P 224 88.1451 54 0.3 62
IV.CRMI.HHZ. 2021-08-19T06:04:35.08 0.3 undecidable manual P 248 88.4448 54 0.05 65
IV.CAFI.HHZ. 2021-08-19T06:04:34.49 0.1 undecidable manual P 182 85.6476 54 -0.2 86
IV.MPAG.EHZ. 2021-08-19T06:04:33.93 0.3 undecidable manual P 131 80.0643 54 -0.05 67
IV.SFI.EHZ. 2021-08-19T06:04:32.72 0.1 undecidable manual S 210 25.0527 143 0.05 100
IV.BRIS.HHZ. 2021-08-19T06:04:32.90 0.3 undecidable manual S 306 23.2545 145 0.51 67
IV.PIEI.HHZ. 2021-08-19T06:04:32.98 0.1 undecidable manual P 146 75.8685 54 -0.48 82
IV.LMD.HHZ. 2021-08-19T06:04:31.82 0.1 undecidable manual S 264 23.6541 145 -0.63 86
IV.MTRZ.HNN. 2021-08-19T06:04:31.08 0.3 undecidable manual P 297 51.6039 122 0.81 56
IV.BOSL.HHZ. 2021-08-19T06:04:30.73 0.1 undecidable manual P 250 53.502 120 0.2 91
IV.PARC.HHZ. 2021-08-19T06:04:30.30 0.1 undecidable manual P 159 53.6019 120 -0.24 89
IV.CRE.HHZ. 2021-08-19T06:04:30.40 0.3 undecidable manual P 184 53.6019 120 -0.14 69
IV.VISG.HHZ. 2021-08-19T06:04:29.20 0.1 undecidable manual P 282 46.3203 125 -0.39 89
IV.CPGN.EHZ. 2021-08-19T06:04:29.36 0.1 negative manual P 143 41.8248 128 0.32 92
IV.RUFI.EHZ. 2021-08-19T06:04:29.65 0.1 undecidable manual P 234 49.0176 123 -0.28 91
IV.ASQU.HHE. 2021-08-19T06:04:28.28 0.1 negative manual P 207 37.8288 131 -0.27 92
IV.LMD.HHZ. 2021-08-19T06:04:26.38 0.1 positive manual P 264 23.6541 145 -0.7 83
IV.SFI.EHZ. 2021-08-19T06:04:26.82 0.1 positive manual P 210 25.0527 143 -0.39 92
IV.BRIS.HHZ. 2021-08-19T06:04:26.85 0.1 positive manual P 306 23.2545 145 -0.19 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:2.1 0.000434 0.28 AML other m 2021-08-19T06:04:32.74
IV.LMD.HHE. ML:2.0 0.00032700000000000003 0.64 AML other m 2021-08-19T06:04:32.32
IV.SFI.EHN. ML:1.8 0.00021799999999999999 1.32 AML other m 2021-08-19T06:04:33.86
IV.SFI.EHE. ML:1.8 0.000214 1.36 AML other m 2021-08-19T06:04:33.26
IV.BRIS.HHN. ML:1.7 0.000161 0.76 AML other m 2021-08-19T06:04:33.41
IV.BRIS.HHE. ML:1.6 0.000126 0.68 AML other m 2021-08-19T06:04:33.07
IV.VISG.HHN. ML:1.4 0.00005675 0.26 AML other m 2021-08-19T06:04:37.82
IV.VISG.HHE. ML:1.3 0.0000436 0.58 AML other m 2021-08-19T06:04:37.64
IV.CPGN.EHE. ML:1.6 0.00009215 0.6 AML other m 2021-08-19T06:04:38.07
IV.CPGN.EHN. ML:1.5 0.00007305 0.26 AML other m 2021-08-19T06:04:38.24
IV.BOSL.HHN. ML:1.1 0.000027099999999999998 0.34 AML other m 2021-08-19T06:04:39.50
IV.BOSL.HHE. ML:1.0 0.0000213 0.48 AML other m 2021-08-19T06:04:39.80
IV.CRE.HHE. ML:1.3 0.0000413 1.46 AML other m 2021-08-19T06:04:39.10
IV.CRE.HHN. ML:1.5 0.00005495 1.24 AML other m 2021-08-19T06:04:40.11
IV.PIEI.HHE. ML:1.6 0.00005745 0.18 AML other m 2021-08-19T06:04:46.17
IV.PIEI.HHN. ML:1.4 0.0000341 0.72 AML other m 2021-08-19T06:04:46.83
IV.OSSC.HHE. ML:1.6 0.000038849999999999996 0.52 AML other m 2021-08-19T06:04:48.89
IV.OSSC.HHN. ML:1.6 0.0000424 0.5 AML other m 2021-08-19T06:04:48.67
IV.MCIV.CHN. ML:2.5 0.000142 0.5 AML other m 2021-08-19T06:05:05.99
IV.MCIV.CHE. ML:2.6 0.000175 0.08 AML other m 2021-08-19T06:05:05.78
IV.GAVE.EHE. ML:2.0 0.000034200000000000005 1.36 AML other m 2021-08-19T06:05:08.19
IV.GAVE.EHN. ML:2.0 0.00003515 1.34 AML other m 2021-08-19T06:05:14.73
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