Earthquake with magnitude of ML 1.5 on date 19-08-2021 and time 06:04:19 (UTC) in region 2 km E Predappio (FC)

A magnitude ML 1.5 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) 44.104, 12.002 at 34 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Bertinoro FC 12 11059 35454
Civitella di Romagna FC 12 3786 39240
Rocca San Casciano FC 14 1910 41150
Forlì FC 14 117913 159063
Forlimpopoli FC 14 13290 172353
Galeata FC 14 2516 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)
22 Km SE of Faenza (58541 inhabitants)
36 Km SE of Imola (69797 inhabitants)
38 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 NE of Scandicci (50609 inhabitants)
76 Km W of Pesaro (94582 inhabitants)
76 Km E of Prato (191150 inhabitants)
87 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
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
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 ± 0.19
Latitude 44.1037 ± 0.0072
Longitude 12.0017 ± 0.0088
Depth (km) 34 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94362541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 794
Semi-minor axis of confidence ellipse (meter) 581
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 790
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 197
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.7959
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 13
Magnitude information

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 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.ATVO.HHZ. 2021-08-19T06:04:47.06 0.1 undecidable manual S 158 0.7779 107 0.7 74
IV.OSSC.HHZ. 2021-08-19T06:04:47.03 0.1 undecidable manual S 224 0.7959 106 0.17 87
IV.CAFI.HHZ. 2021-08-19T06:04:45.80 0.1 undecidable manual S 182 0.7743 107 -0.45 82
IV.MGAB.HHZ. 2021-08-19T06:04:40.73 3.0 undecidable manual Pn -0.26 0
IV.CRE.HHZ. 2021-08-19T06:04:38.29 0.1 undecidable manual S 184 0.4856 117 -0.01 95
IV.PARC.HHZ. 2021-08-19T06:04:38.11 0.1 undecidable manual S 159 0.4856 117 -0.19 92
IV.BOSL.HHZ. 2021-08-19T06:04:38.21 0.3 undecidable manual S 249 0.4829 117 -0.01 71
IV.RUFI.EHZ. 2021-08-19T06:04:37.43 0.1 undecidable manual S 233 0.4425 120 0.26 92
IV.VISG.HHZ. 2021-08-19T06:04:37.06 0.1 undecidable manual S 282 0.4155 122 0.57 85
IV.OSSC.HHZ. 2021-08-19T06:04:35.39 0.1 undecidable manual P 224 0.7959 106 -0.1 88
IV.ATVO.HHZ. 2021-08-19T06:04:35.47 0.1 undecidable manual P 158 0.7779 107 0.27 85
IV.CRMI.HHZ. 2021-08-19T06:04:35.11 3.0 negative manual Pn -0.35 0
IV.CAFI.HHZ. 2021-08-19T06:04:34.49 0.1 undecidable manual P 182 0.7743 107 -0.65 77
IV.ASQU.HHE. 2021-08-19T06:04:34.70 0.1 undecidable manual S 207 0.3426 127 0 98
IV.PIEI.HHZ. 2021-08-19T06:04:33.33 3.0 positive manual Pn -0.81 0
IV.MPAG.EHZ. 2021-08-19T06:04:33.95 3.0 positive manual Pn -0.76 0
IV.SFI.EHZ. 2021-08-19T06:04:32.37 0.3 undecidable manual S 209 0.2275 140 0.15 73
IV.BRIS.HHZ. 2021-08-19T06:04:32.09 0.1 undecidable manual S 306 0.2077 143 0.25 96
IV.LMD.HHZ. 2021-08-19T06:04:31.82 0.1 undecidable manual S 263 0.2131 142 -0.12 98
IV.CRE.HHZ. 2021-08-19T06:04:30.31 0.6 positive manual P 184 0.4856 117 -0.23 46
IV.PARC.HHZ. 2021-08-19T06:04:30.45 0.6 positive manual P 159 0.4856 117 -0.09 47
IV.BOSL.HHZ. 2021-08-19T06:04:30.73 0.1 undecidable manual P 249 0.4829 117 0.23 91
IV.RUFI.EHZ. 2021-08-19T06:04:29.72 1.0 positive manual P 233 0.4425 120 -0.17 23
IV.VISG.HHZ. 2021-08-19T06:04:29.20 0.1 undecidable manual P 282 0.4155 122 -0.3 91
IV.CPGN.EHZ. 2021-08-19T06:04:29.36 0.1 negative manual P 143 0.3795 124 0.38 90
IV.ASQU.HHE. 2021-08-19T06:04:28.28 0.1 undecidable manual P 207 0.3426 127 -0.19 95
IV.BRIS.HHZ. 2021-08-19T06:04:26.85 0.1 positive manual P 306 0.2077 143 0.03 100
IV.LMD.HHZ. 2021-08-19T06:04:26.38 0.1 positive manual P 263 0.2131 142 -0.5 91
IV.SFI.EHZ. 2021-08-19T06:04:26.82 0.3 positive manual P 209 0.2275 140 -0.22 72
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 0.000327 0.64 AML other m 2021-08-19T06:04:32.32
IV.SFI.EHN. ML:1.8 0.000218 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 5.675E-5 0.26 AML other m 2021-08-19T06:04:37.82
IV.VISG.HHE. ML:1.3 4.36E-5 0.58 AML other m 2021-08-19T06:04:37.64
IV.CPGN.EHE. ML:1.6 9.215E-5 0.6 AML other m 2021-08-19T06:04:38.07
IV.CPGN.EHN. ML:1.5 7.305E-5 0.26 AML other m 2021-08-19T06:04:38.24
IV.BOSL.HHN. ML:1.1 2.71E-5 0.34 AML other m 2021-08-19T06:04:39.50
IV.BOSL.HHE. ML:1 2.13E-5 0.48 AML other m 2021-08-19T06:04:39.80
IV.CRE.HHE. ML:1.3 4.13E-5 1.46 AML other m 2021-08-19T06:04:39.10
IV.CRE.HHN. ML:1.4 5.495E-5 1.24 AML other m 2021-08-19T06:04:40.11
IV.PIEI.HHE. ML:1.6 5.745E-5 0.18 AML other m 2021-08-19T06:04:46.17
IV.PIEI.HHN. ML:1.4 3.41E-5 0.72 AML other m 2021-08-19T06:04:46.83
IV.OSSC.HHE. ML:1.6 3.885E-5 0.52 AML other m 2021-08-19T06:04:48.89
IV.OSSC.HHN. ML:1.6 4.24E-5 0.5 AML other m 2021-08-19T06:04:48.67
IV.MCIV.CHN. ML:2.4 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 3.42E-5 1.36 AML other m 2021-08-19T06:05:08.19
IV.ZONE.HHN. ML:2.5 6.775E-5 0.26 AML other m 2021-08-19T06:05:14.67
IV.GAVE.EHN. ML:2 3.515E-5 1.34 AML other m 2021-08-19T06:05:14.73
IV.ZONE.HHE. ML:2.6 7.415E-5 0.3 AML other m 2021-08-19T06:05:17.15
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