ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.1 on date 19-03-2019 and time 13:19:49 (Italy) in region 2 km W Aquila d'Arroscia (IM)

A magnitude ML 1.1 earthquake occured in region: 2 km W Aquila d'Arroscia (IM), on

  • 19-03-2019 12:19:49 (UTC)
  • 19-03-2019 13:19:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.08, 7.98 at 9 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
Aquila d'Arroscia IM 3 166 166
Borghetto d'Arroscia IM 3 456 622
Alto CN 4 128 750
Caprauna CN 4 104 854
Ranzo IM 4 557 1411
Vessalico IM 4 282 1693
Armo IM 5 111 1804
Nasino SV 6 207 2011
Pieve di Teco IM 6 1338 3349
Onzo SV 6 219 3568
Vendone SV 8 388 3956
Casanova Lerrone SV 8 749 4705
Cesio IM 8 283 4988
Pornassio IM 8 685 5673
Castelbianco SV 9 330 6003
Ormea CN 9 1617 7620
Testico SV 10 196 7816
Ortovero SV 10 1586 9402
Caravonica IM 10 282 9684
Arnasco SV 11 645 10329
Rezzo IM 11 366 10695
Garlenda SV 11 1254 11949
Stellanello SV 12 808 12757
Cosio d'Arroscia IM 12 221 12978
Zuccarello SV 12 309 13287
Aurigo IM 12 347 13634
Erli SV 12 245 13879
Borgomaro IM 12 865 14744
Chiusanico IM 12 607 15351
Castelvecchio di Rocca Barbena SV 12 145 15496
Montegrosso Pian Latte IM 13 118 15614
Chiusavecchia IM 13 577 16191
Lucinasco IM 13 272 16463
Garessio CN 13 3244 19707
Mendatica IM 14 185 19892
Cisano sul Neva SV 14 2085 21977
Villanova d'Albenga SV 14 2657 24634
Villa Faraldi IM 16 444 25078
Diano Arentino IM 16 722 25800
Pontedassio IM 16 2323 28123
Carpasio IM 16 168 28291
Balestrino SV 17 595 28886
Vasia IM 17 389 29275
Bardineto SV 17 756 30031
Prelà IM 18 503 30534
Briga Alta CN 18 39 30573
Alassio SV 18 10934 41507
Diano San Pietro IM 19 1145 42652
Priola CN 19 701 43353
Molini di Triora IM 19 617 43970
Laigueglia SV 19 1810 45780
Andora SV 19 7552 53332
Toirano SV 19 2644 55976
Diano Castello IM 19 2214 58190
Albenga SV 19 24213 82403
Dolcedo IM 20 1415 83818
Triora IM 20 355 84173
San Bartolomeo al Mare IM 20 3129 87302

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NE of Sanremo (54807 inhabitants)
48 Km SW of Savona (61345 inhabitants)
48 Km SE of Cuneo (56081 inhabitants)
85 Km W of Genova (586655 inhabitants)
93 Km S of Asti (76202 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 1.1 2019-03-19
12:19:49
44.08 7.98 9 2019-03-19
12:30:31
Sala Sismica INGV-Roma 66680891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-19 12:19:49 ± 0.11
Latitude 44.08 ± 0.01
Longitude 7.98 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66680891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 821
Semi-minor axis of confidence ellipse (meter) 712
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 19
Circular confidence region, given by single value of horizontal uncertainty (meter) 820
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.61244
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 66680891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-19 12:30:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.STV.HHZ. 2019-03-19T12:20:06.97 0.6 undecidable manual S 289 0.4928 50 -0.14 62
GU.PCP.HHE. 2019-03-19T12:20:02.19 0.6 undecidable manual P 42 0.6124 50 0.44 56
GU.ROTM.HHZ. 2019-03-19T12:20:02.29 3.0 undecidable manual P 0
FR.SAOF.HHE.00 2019-03-19T12:20:01.25 0.6 undecidable manual S 252 0.3193 50 -0.71 54
GU.STV.HHZ. 2019-03-19T12:20:00.06 0.3 undecidable manual P 289 0.4928 50 0.36 88
GU.CANO.HHZ. 2019-03-19T12:19:58.34 0.6 undecidable manual S 57 0.2248 110 -0.44 61
GU.ENR.HHE. 2019-03-19T12:19:58.32 0.3 undecidable manual P 290 0.4227 50 -0.18 93
IV.QLNO.HHZ. 2019-03-19T12:19:57.36 0.3 undecidable manual P 48 0.3579 50 -0.04 97
GU.GBOS.HHZ. 2019-03-19T12:19:57.19 0.3 undecidable manual S 328 0.1853 114 -0.16 97
FR.SAOF.HHE.00 2019-03-19T12:19:56.86 0.3 undecidable manual P 252 0.3193 50 0.13 96
IV.IMI.HHE. 2019-03-19T12:19:54.10 0.6 undecidable manual P 199 0.1835 114 0.07 66
GU.GBOS.HHZ. 2019-03-19T12:19:54.46 0.3 undecidable manual P 328 0.1853 114 0.39 93
GU.CANO.HHZ. 2019-03-19T12:19:54.89 0.3 undecidable manual P 57 0.2248 110 0 100
GU.RORO.HHZ. 2019-03-19T12:19:53.52 0.3 undecidable manual S 67 0.071 139 -0.2 99
GU.BURY.HHZ. 2019-03-19T12:19:53.88 3.0 undecidable manual P 0
GU.RORO.HHZ. 2019-03-19T12:19:52.19 0.3 undecidable manual P 67 0.071 139 0.22 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.RORO.HHN. ML:1.4 0.0003905 0.44 AML other m 2019-03-19T12:19:53.58
GU.GBOS.HHE. ML:0.5 2.6369855E-5 0.3776 AML other m 2019-03-19T12:19:57.64
GU.GBOS.HHN. ML:0.7 4.039435E-5 1.6 AML other m 2019-03-19T12:19:57.97
GU.CANO.HHE. ML:1.2 9.328835E-5 1.2992 AML other m 2019-03-19T12:19:58.18
GU.CANO.HHN. ML:1 5.3083405E-5 0.32 AML other m 2019-03-19T12:19:58.26
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