Earthquake (quarry blast) with magnitude of ML 0.9 on date 25-01-2022 and time 11:21:37 (UTC) in region 3 km S Molini di Triora (IM)

A magnitude ML 0.9 (quarry blast) earthquake occured in region: 3 km S Molini di Triora (IM), on

  • 25-01-2022 11:21:37 (UTC)
  • 25-01-2022 12:21:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9620, 7.7790 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: quarry blast.

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
Molini di Triora IM 3 617 617
Triora IM 4 355 972
Montalto Ligure IM 7 377 1349
Carpasio IM 7 168 1517
Badalucco IM 8 1136 2653
Bajardo IM 8 312 2965
Ceriana IM 9 1250 4215
Castel Vittorio IM 9 287 4502
Pigna IM 10 859 5361
Rezzo IM 10 366 5727
Aurigo IM 12 347 6074
Montegrosso Pian Latte IM 12 118 6192
Pietrabruna IM 13 501 6693
Castellaro IM 13 1256 7949
Mendatica IM 13 185 8134
Apricale IM 13 629 8763
PrelĂ  IM 13 503 9266
Perinaldo IM 13 870 10136
Cosio d'Arroscia IM 13 221 10357
Borgomaro IM 14 865 11222
Briga Alta CN 14 39 11261
Pornassio IM 14 685 11946
Isolabona IM 14 679 12625
Taggia IM 14 14116 26741
Vasia IM 15 389 27130
Pieve di Teco IM 15 1338 28468
Lucinasco IM 15 272 28740
Caravonica IM 15 282 29022
Pompeiana IM 15 823 29845
Dolcedo IM 15 1415 31260
Terzorio IM 15 216 31476
Sanremo IM 16 54807 86283
Riva Ligure IM 16 2910 89193
Rocchetta Nervina IM 16 298 89491
Seborga IM 17 315 89806
Chiusavecchia IM 17 577 90383
Cesio IM 17 283 90666
Civezza IM 17 609 91275
Santo Stefano al Mare IM 17 2197 93472
Chiusanico IM 17 607 94079
Cipressa IM 17 1290 95369
Vessalico IM 18 282 95651
Dolceacqua IM 18 2074 97725
Costarainera IM 18 828 98553
Armo IM 18 111 98664
Soldano IM 18 977 99641
Ospedaletti IM 19 3367 103008
Vallebona IM 19 1310 104318
Pontedassio IM 19 2323 106641
San Biagio della Cima IM 19 1329 107970
San Lorenzo al Mare IM 19 1297 109267
Borghetto d'Arroscia IM 20 456 109723

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km N of Sanremo (54807 inhabitants)
51 Km SE of Cuneo (56081 inhabitants)
68 Km SW of Savona (61345 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 0.9 2022-01-25
11:21:37
43.9622 7.7788 1 2022-07-08
12:33:43
Bollettino Sismico Italiano INGV 103165411
Reviewed
Rev100
ML 1.0 2022-01-25
11:21:37
43.9583 7.8028 6 2022-01-25
11:27:21
Sala Sismica INGV-Roma 100167801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-25 11:21:37 ± 0.15
Latitude 43.9622 ± 0.0099
Longitude 7.7788 ± 0.0125
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 103165411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1080
Semi-minor axis of confidence ellipse (meter) 950
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 7
Circular confidence region, given by single value of horizontal uncertainty (meter) 1080.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.08274
Epicentral distance of station farthest from the epicenter (degree) 0.72216
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 103165411
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-04-13 14:30:36

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 100167801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-25 11:27:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.PZZ.HHE. 2022-01-25T11:21:52.35 0.3 undecidable manual P 319 80.1642 50 -0.37 63
GU.STV.HHZ. 2022-01-25T11:21:46.64 0.3 undecidable manual P 311 47.8188 91 -0.53 64
GU.ENR.HHE. 2022-01-25T11:21:45.60 0.3 undecidable manual P 316 41.2254 91 -0.27 69
GU.GBOS.HHE. 2022-01-25T11:21:44.32 0.3 undecidable manual P 9 31.3464 91 0.44 68
GU.RORO.HHZ. 2022-01-25T11:21:43.05 0.3 undecidable manual P 54 28.3494 91 -0.23 71
GU.BURY.HHE. 2022-01-25T11:21:43.12 0.3 undecidable manual P 222 26.6511 91 0.17 72
FR.SAOF.HHZ.00 2022-01-25T11:21:41.58 0.1 undecidable manual P 278 18.2706 92 0.33 94
GU.IMI.HHZ. 2022-01-25T11:21:39.65 0.1 undecidable manual P 122 10.7781 93 -0.11 100
GU.MGRO.HHZ. 2022-01-25T11:21:39.75 0.1 undecidable manual P 15 9.1797 93 0.3 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.IMI.HHE. ML:1.0 0.0001585 0.68 AML other m 2022-01-25T11:21:42.16
GU.IMI.HHN. ML:1.0 0.0001635 1.24 AML other m 2022-01-25T11:21:42.35
FR.SAOF.HHE.00 ML:0.8 0.00005275 0.4 AML other m 2022-01-25T11:21:48.47
FR.SAOF.HHN.00 ML:0.7 0.00004585 0.5 AML other m 2022-01-25T11:21:48.84
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