Earthquake with magnitude of ML 1.0 on date 18-10-2019 and time 22:06:26 (Italy) in region 4 km NW Bolano (SP)

A magnitude ML 1.0 earthquake occured in region: 4 km NW Bolano (SP), on

  • 18-10-2019 20:06:26 (UTC)
  • 18-10-2019 22:06:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.21, 9.86 at 10 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
Bolano SP 4 7813 7813
Calice al Cornoviglio SP 4 1138 8951
Follo SP 5 6337 15288
Podenzana MS 7 2180 17468
Santo Stefano di Magra SP 7 9360 26828
Beverino SP 7 2429 29257
Vezzano Ligure SP 8 7356 36613
Tresana MS 8 2044 38657
Aulla MS 9 11263 49920
Rocchetta di Vara SP 9 703 50623
Riccò del Golfo di Spezia SP 10 3698 54321
Brugnato SP 11 1270 55591
Arcola SP 11 10607 66198
Borghetto di Vara SP 11 938 67136
Pignone SP 11 565 67701
La Spezia SP 12 93959 161660
Villafranca in Lunigiana MS 12 4770 166430
Zignago SP 12 532 166962
Mulazzo MS 13 2424 169386
Sarzana SP 13 21976 191362
Filattiera MS 15 2309 193671
Fosdinovo MS 15 4883 198554
Lerici SP 15 10228 208782
Riomaggiore SP 16 1576 210358
Licciana Nardi MS 16 4949 215307
Bagnone MS 16 1887 217194
Vernazza SP 16 848 218042
Carrodano SP 17 503 218545
Portovenere SP 17 3630 222175
Sesta Godano SP 17 1377 223552
Monterosso al Mare SP 18 1464 225016
Zeri MS 18 1094 226110
Castelnuovo Magra SP 18 8415 234525
Ameglia SP 18 4365 238890
Pontremoli MS 19 7357 246247

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km N of La Spezia (93959 inhabitants)
24 Km NW of Carrara (63133 inhabitants)
30 Km NW of Massa (69479 inhabitants)
49 Km NW of Viareggio (62467 inhabitants)
65 Km NW of Lucca (89046 inhabitants)
70 Km NW of Pisa (89158 inhabitants)
76 Km SW of Parma (192836 inhabitants)
77 Km E of Genova (586655 inhabitants)
81 Km NW of Livorno (159219 inhabitants)
82 Km SW of Reggio nell'Emilia (171345 inhabitants)
90 Km W of Pistoia (90315 inhabitants)
95 Km S of Piacenza (102191 inhabitants)
98 Km W of Modena (184973 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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
Rev 100 ML 1.0 2019-10-18
20:06:26
44.21 9.86 10 2019-10-18
20:13:58
Sala Sismica INGV-Roma 73330661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-18 20:06:26 ± 0.16
Latitude 44.21 ± 0.01
Longitude 9.86 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73330661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 934
Semi-minor axis of confidence ellipse (meter) 764
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 176
Circular confidence region, given by single value of horizontal uncertainty (meter) 930
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.68259
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 73330661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-18 20:13:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.BRMO.HHZ. 2019-10-18T20:07:31.18 3.0 undecidable manual Sn -3.49 0
MN.TRI.HHZ. 2019-10-18T20:07:29.19 3.0 negative manual Pg 13.07 0
IV.VIVA.HHZ. 2019-10-18T20:07:15.52 3.0 undecidable manual Pn -1.63 0
IV.MNTT.EHZ. 2019-10-18T20:07:14.89 3.0 negative manual Pn 1.88 0
IV.FIR.HHZ. 2019-10-18T20:07:04.94 0.6 undecidable manual S 0.24 1.15
IV.PII.HHZ. 2019-10-18T20:06:49.76 0.6 undecidable manual S 135 0.6826 50 0.8 37
GU.GSCL.HHZ. 2019-10-18T20:06:48.01 1.0 undecidable manual S 1.02 0.58
GU.POPM.HHZ. 2019-10-18T20:06:48.15 0.6 undecidable manual S 104 0.6646 50 -0.26 44
GU.CARD.HHZ. 2019-10-18T20:06:42.16 0.6 undecidable manual S 112 0.4829 50 -0.87 38
IV.PII.HHZ. 2019-10-18T20:06:39.53 0.3 undecidable manual P 135 0.6826 50 0.27 66
MN.VLC.HHZ. 2019-10-18T20:06:39.23 0.3 undecidable manual S 97 0.3804 50 -0.78 60
GU.POPM.HHZ. 2019-10-18T20:06:39.72 0.3 undecidable manual P 104 0.6646 50 0.78 57
GU.GRAM.HHZ. 2019-10-18T20:06:38.23 0.6 undecidable manual S 28 0.3175 50 0.09 50
GU.GORR.HHE. 2019-10-18T20:06:37.35 0.6 undecidable manual P 315 0.5675 50 0.07 47
GU.CARD.HHZ. 2019-10-18T20:06:36.51 0.3 undecidable manual P 112 0.4829 50 0.68 61
IV.MSSA.HHZ. 2019-10-18T20:06:35.92 0.3 undecidable manual S 294 0.2671 50 -0.73 63
GU.FIVI.HNZ. 2019-10-18T20:06:34.12 0.3 undecidable manual S 81 0.1934 115 -0.09 76
MN.VLC.HHZ. 2019-10-18T20:06:34.15 1.0 undecidable manual P 97 0.3804 50 0.06 25
GU.EQUI.HHZ. 2019-10-18T20:06:34.24 0.3 undecidable manual S 102 0.214 112 -0.7 64
GU.GRAM.HHZ. 2019-10-18T20:06:33.30 0.1 positive manual P 28 0.3175 50 0.29 95
IV.MSSA.HHZ. 2019-10-18T20:06:32.07 0.3 negative manual P 294 0.2671 50 -0.08 75
IV.PLMA.HHZ. 2019-10-18T20:06:32.74 0.3 undecidable manual S 182 0.1601 119 -0.3 73
GU.EQUI.HHZ. 2019-10-18T20:06:31.27 0.3 undecidable manual P 102 0.214 112 0.11 75
GU.FIVI.HNZ. 2019-10-18T20:06:31.03 0.3 undecidable manual P 81 0.1934 115 0.29 73
IV.PLMA.HHZ. 2019-10-18T20:06:30.25 0.1 undecidable manual P 182 0.1601 119 0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PLMA.HHE. ML:1 8.4087135E-5 0.1408 AML other m 2019-10-18T20:06:32.80
IV.PLMA.HHN. ML:0.9 6.5789525E-5 0.064 AML other m 2019-10-18T20:06:33.03
IV.MSSA.HHE. ML:0.8 3.567678E-5 1.1776 AML other m 2019-10-18T20:06:46.13
IV.MSSA.HHN. ML:0.8 3.014551E-5 1.2416 AML other m 2019-10-18T20:06:44.95
GU.GRAM.HHE. ML:0.8 2.3021725E-5 0.1792 AML other m 2019-10-18T20:06:40.20
GU.GRAM.HHN. ML:0.9 3.6966285E-5 0.1664 AML other m 2019-10-18T20:06:39.99
MN.VLC.HHE. ML:0.5 9.951343E-6 0.1152 AML other m 2019-10-18T20:06:40.18
MN.VLC.HHN. ML:0.7 1.4447234E-5 0.6272 AML other m 2019-10-18T20:06:48.05
MN.VLC.HNE. ML:1.2 5.323612E-5 0.448 AML other m 2019-10-18T20:06:44.09
MN.VLC.HNN. ML:1.2 5.3318595E-5 0.7552 AML other m 2019-10-18T20:06:38.14
GU.CARD.HHE. ML:1.1 3.1027685E-5 0.1152 AML other m 2019-10-18T20:06:45.84
GU.CARD.HHN. ML:1.1 2.7694185E-5 0.128 AML other m 2019-10-18T20:06:46.24
IV.PII.HHE. ML:1.3 3.0068625E-5 0.2688 AML other m 2019-10-18T20:06:50.82
IV.PII.HHN. ML:1.3 3.18051735E-5 0.2944 AML other m 2019-10-18T20:06:50.66
GU.POPM.HHE. ML:1.1 1.8221055E-5 0.1536 AML other m 2019-10-18T20:06:51.21
GU.POPM.HHN. ML:1.2 2.461601E-5 0.1792 AML other m 2019-10-18T20:06:50.91
IV.MNTT.EHE. ML:2.6 3.794305E-5 0.7168 AML other m 2019-10-18T20:07:53.34
IV.MNTT.EHN. ML:2.5 3.396966E-5 0.2816 AML other m 2019-10-18T20:07:26.02
IV.VIVA.HHE. ML:3.3 0.000150326715 0.2048 AML other m 2019-10-18T20:08:28.53
IV.VIVA.HHN. ML:3.3 0.0001436478 0.1664 AML other m 2019-10-18T20:07:39.94
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download