Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 14-07-2020 and time 13:28:21 (Italy) in region 3 km SE Riolo Terme (RA)

A magnitude ML 2.2 earthquake occured in region: 3 km SE Riolo Terme (RA), on

  • 14-07-2020 11:28:21 (UTC)
  • 14-07-2020 13:28:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2560, 11.7420 at 22 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
Riolo Terme RA 3 5720 5720
Brisighella RA 4 7639 13359
Castel Bolognese RA 9 9554 22913
Casola Valsenio RA 10 2617 25530
Casalfiumanese BO 11 3438 28968
Imola BO 11 69797 98765
Modigliana FC 12 4560 103325
Faenza RA 12 58541 161866
Borgo Tossignano BO 12 3288 165154
Solarolo RA 14 4488 169642
Fontanelice BO 15 1943 171585
Dozza BO 15 6652 178237
Bagnara di Romagna RA 16 2429 180666
Mordano BO 17 4760 185426
Castrocaro Terme e Terra del Sole FC 19 6426 191852
Dovadola FC 19 1653 193505
Castel del Rio BO 19 1246 194751
Tredozio FC 20 1212 195963
Castel San Pietro Terme BO 20 20811 216774

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km S of Imola (69797 inhabitants)
12 Km W of Faenza (58541 inhabitants)
24 Km W of Forlì (117913 inhabitants)
41 Km W of Ravenna (159116 inhabitants)
41 Km SE of Bologna (386663 inhabitants)
42 Km W of Cesena (96758 inhabitants)
65 Km S of Ferrara (133155 inhabitants)
66 Km NE of Prato (191150 inhabitants)
66 Km NE of Firenze (382808 inhabitants)
69 Km W of Rimini (147750 inhabitants)
71 Km NE of Scandicci (50609 inhabitants)
75 Km E of Pistoia (90315 inhabitants)
78 Km SE of Modena (184973 inhabitants)
88 Km N of Arezzo (99543 inhabitants)
90 Km SE of Carpi (70699 inhabitants)
91 Km S of Rovigo (51867 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 2.2 2020-07-14
11:28:21		 44.2555 11.7417 22 2020-11-19
12:37:01		 Bollettino Sismico Italiano INGV 82916671
Reviewed
Rev100 		ML 2.2 2020-07-14
11:28:22		 44.2453 11.7233 21 2020-07-14
11:37:54		 Sala Sismica INGV-Roma 81028401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-14 11:28:21 ± 0.28
Latitude 44.2555 ± 0.0099
Longitude 11.7417 ± 0.0126
Depth (km) 22 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 82916671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1015
Semi-minor axis of confidence ellipse (meter) 787
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 37
Circular confidence region, given by single value of horizontal uncertainty (meter) 1010.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45955
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 81028401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-14 11:37:54

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 82916671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-21 10:49:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PE3.EHZ. 2020-07-14T11:28:51.71 3.0 undecidable manual S 0.08 0
IV.APEC.HHZ. 2020-07-14T11:28:50.07 3.0 undecidable manual S -3.54 0
IV.FNVD.HHZ. 2020-07-14T11:28:39.13 0.3 undecidable manual S 259 50.1165 106 0.91 55
IV.PE3.EHZ. 2020-07-14T11:28:39.85 3.0 positive manual P 0.66 0
IV.ASQU.HHE. 2020-07-14T11:28:39.07 0.6 undecidable manual S 176 51.0156 106 0.62 40
IV.RUFI.EHE. 2020-07-14T11:28:38.77 0.6 undecidable manual S 202 49.9167 106 0.62 41
IV.SFI.EHZ. 2020-07-14T11:28:36.00 0.3 undecidable manual S 168 39.8268 111 0.4 66
IV.SEI.HHZ. 2020-07-14T11:28:35.28 0.3 undecidable manual S 234 37.7289 112 0.18 70
IV.ASQU.HHE. 2020-07-14T11:28:31.55 0.3 undecidable manual P 176 51.0156 106 0.06 70
IV.VISG.HHZ. 2020-07-14T11:28:31.69 0.3 undecidable manual S 253 25.5522 124 -0.5 66
IV.RUFI.EHE. 2020-07-14T11:28:31.34 0.1 undecidable manual P 202 49.9167 106 0.03 94
IV.FNVD.HHZ. 2020-07-14T11:28:31.03 0.3 undecidable manual P 259 50.1165 106 -0.32 66
IV.IMOL.EHZ. 2020-07-14T11:28:30.52 0.3 undecidable manual S 0 11.5773 148 0.96 58
IV.LMD.HHZ. 2020-07-14T11:28:30.84 0.3 undecidable manual S 188 19.9689 132 -0.17 72
IV.RINC.HHZ. 2020-07-14T11:28:30.30 0.1 undecidable manual P 195 42.3243 109 0.1 94
IV.SEI.HHZ. 2020-07-14T11:28:29.14 0.1 undecidable manual P 234 37.7289 112 -0.41 89
IV.SFI.EHZ. 2020-07-14T11:28:29.75 0.1 positive manual P 168 39.8268 111 -0.09 95
IV.RONT.HHZ. 2020-07-14T11:28:29.38 0.3 undecidable manual P 220 38.0286 112 -0.21 70
IV.MTRZ.HHZ. 2020-07-14T11:28:28.22 0.3 undecidable manual P 284 25.9518 123 0.29 70
IV.BRIS.HHZ. 2020-07-14T11:28:28.61 0.3 undecidable manual S 150 3.996 168 -0.2 73
IV.VISG.HHZ. 2020-07-14T11:28:27.39 0.1 positive manual P 253 25.5522 124 -0.48 89
IV.LMD.HHZ. 2020-07-14T11:28:26.85 0.1 negative manual P 188 19.9689 132 -0.34 93
IV.IMOL.EHZ. 2020-07-14T11:28:26.45 0.1 undecidable manual P 0 11.5773 148 0.1 100
IV.BRIS.HHZ. 2020-07-14T11:28:25.65 0.1 positive manual P 150 3.996 168 -0.27 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHE. ML:2.4 0.0018549999999999999 0.36 AML other m 2020-07-14T11:28:28.70
IV.BRIS.HHN. ML:2.1 0.0010435 1.02 AML other m 2020-07-14T11:28:28.85
IV.IMOL.HNE. ML:2.6 0.002735 0.6 AML other m 2020-07-14T11:28:31.03
IV.IMOL.HNN. ML:2.4 0.001685 0.96 AML other m 2020-07-14T11:28:31.07
IV.LMD.HHN. ML:1.9 0.000441 0.7 AML other m 2020-07-14T11:28:31.00
IV.LMD.HHE. ML:2.0 0.000493 1.72 AML other m 2020-07-14T11:28:31.87
IV.VISG.HHE. ML:2.0 0.00044950000000000003 0.98 AML other m 2020-07-14T11:28:32.37
IV.VISG.HHN. ML:2.0 0.000476 0.28 AML other m 2020-07-14T11:28:32.74
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
Waveforms Seismic signals in miniseed + resp format Download