Earthquake with magnitude of ML 1.9 on date 31-07-2022 and time 13:49:45 (UTC) in region Costa Ligure Occidentale (Imperia)

A magnitude ML 1.9 earthquake occured in region: Costa Ligure Occidentale (Imperia), on

  • 31-07-2022 13:49:45 (UTC)
  • 31-07-2022 15:49:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6360, 7.7290 at 15 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Bordighera IM 17 10469 10469
Ospedaletti IM 18 3367 13836
Vallecrosia IM 19 6956 20792
Ventimiglia IM 20 24310 45102

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km S of Sanremo (54807 inhabitants)
86 Km S of Cuneo (56081 inhabitants)
96 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 1.9 2022-07-31
13:49:45
43.6363 7.7292 15 2023-01-31
19:03:35
Bollettino Sismico Italiano INGV 108974911
Reviewed
Rev100
ML 1.9 2022-07-31
13:49:45
43.658 7.7533 9 2022-07-31
13:58:23
Sala Sismica INGV-Roma 107920291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-07-31 13:49:45 ± 0.28
Latitude 43.6363 ± 0.0144
Longitude 7.7292 ± 0.0124
Depth (km) 15 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 108974911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1181
Semi-minor axis of confidence ellipse (meter) 1090
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 179
Circular confidence region, given by single value of horizontal uncertainty (meter) 1180.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 287
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 24
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.54683
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 107920291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-07-31 13:58:23

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 108974911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-08-27 02:20:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIZZ.HHZ. 2022-07-31T13:51:36.49 3.0 positive manual Pn -1.17 0
ST.CARE.HNZ. 2022-07-31T13:51:35.66 3.0 undecidable manual Sg 13.55 0
IV.VITU.HHZ. 2022-07-31T13:51:24.26 3.0 undecidable manual Pg 17.110001 0
IV.SSFR.HHZ. 2022-07-31T13:51:24.23 3.0 undecidable manual Sn -0.39 0
IV.BARO.EHZ. 2022-07-31T13:51:22.57 3.0 undecidable manual Sn 4.14 0
OX.ACOM.HHZ. 2022-07-31T13:51:19.84 3.0 negative manual Pg 20.120001 0
CH.MUGIO.HHZ. 2022-07-31T13:51:05.31 3.0 undecidable manual Sg 7.89 0
IV.RCAV.EHZ. 2022-07-31T13:51:03.63 3.0 negative manual Pg 16.139999 0
IT.UMBT.HGZ. 2022-07-31T13:50:49.33 3.0 undecidable manual Pg 13.23 0
ST.RONC.EHZ. 2022-07-31T13:50:44.13 3.0 positive manual Pg 10.36 0
CH.BNALP.HHZ. 2022-07-31T13:50:38.99 3.0 undecidable manual Pn 2.82 0
IV.SFI.EHZ. 2022-07-31T13:50:34.65 3.0 undecidable manual Pn 3.51 0
GU.PZZ.HHZ. 2022-07-31T13:50:17.34 0.3 undecidable manual S 333 108.2139 92 0.33 63
GU.RRL.HHZ. 2022-07-31T13:50:12.28 0.6 undecidable manual P 333 160.8168 91 0.41 35
IV.QLNO.HHZ. 2022-07-31T13:50:11.89 0.3 undecidable manual S 33 90.8424 93 -0.48 62
GU.RSP.HHZ. 2022-07-31T13:50:11.91 0.3 undecidable manual P 348 171.6948 54 -1.39 33
GU.CANO.HHZ. 2022-07-31T13:50:08.08 0.6 undecidable manual S 32 75.2691 93 -0.15 46
GU.ENR.HHZ. 2022-07-31T13:50:07.01 0.6 undecidable manual S 339 70.2741 94 0.1 48
GU.STV.HHZ. 2022-07-31T13:50:07.98 0.6 undecidable manual S 335 74.7696 93 -0.13 45
GU.BHB.HHZ. 2022-07-31T13:50:07.00 0.3 undecidable manual P 345 138.0618 92 -1.36 38
GU.GBOS.HHZ. 2022-07-31T13:50:06.48 0.6 undecidable manual S 7 67.6767 94 0.26 46
GU.PCP.HHZ. 2022-07-31T13:50:05.02 0.6 undecidable manual P 33 119.5914 92 -0.5 39
GU.PZZ.HHZ. 2022-07-31T13:50:04.34 0.3 undecidable manual P 333 108.2139 92 0.58 58
GU.RORO.HHZ. 2022-07-31T13:50:04.00 0.6 undecidable manual S 27 59.2962 95 0.02 49
IV.QLNO.HHZ. 2022-07-31T13:50:01.50 0.3 undecidable manual P 33 90.8424 93 0.42 62
GU.MGRO.HHZ. 2022-07-31T13:50:00.50 0.6 undecidable manual S 8 45.5211 97 0.19 49
FR.SAOF.HHZ. 2022-07-31T13:49:59.01 0.6 undecidable manual S 340 41.2254 98 -0.18 47
GU.ENR.HHZ. 2022-07-31T13:49:58.18 0.3 undecidable manual P 339 70.2741 94 0.25 68
GU.STV.HHZ. 2022-07-31T13:49:58.82 0.3 undecidable manual P 335 74.7696 93 0.2 68
GU.CANO.HHZ. 2022-07-31T13:49:58.87 0.3 undecidable manual P 32 75.2691 93 0.19 68
GU.GBOS.HHZ. 2022-07-31T13:49:57.79 0.3 undecidable manual P 7 67.6767 94 0.26 68
GU.RORO.HHZ. 2022-07-31T13:49:56.34 0.3 undecidable manual P 27 59.2962 95 0.1 71
GU.MGRO.HHZ. 2022-07-31T13:49:54.44 0.1 undecidable manual P 8 45.5211 97 0.32 93
FR.SAOF.HHZ. 2022-07-31T13:49:53.25 0.3 undecidable manual P 340 41.2254 98 -0.22 72
GU.BURY.HHZ. 2022-07-31T13:49:53.65 0.6 undecidable manual S 320 21.2676 111 -0.34 48
GU.BURY.HHZ. 2022-07-31T13:49:50.24 0.1 undecidable manual P 320 21.2676 111 -0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BURY.HNE. ML:2.0 0.0006825 0.34 AML other m 2022-07-31T13:49:53.76
GU.BURY.HHN. ML:2.1 0.0007295 0.16 AML other m 2022-07-31T13:49:53.76
GU.BURY.HNN. ML:1.9 0.00045999999999999996 0.46 AML other m 2022-07-31T13:49:53.75
GU.BURY.HHE. ML:1.9 0.000447 0.1 AML other m 2022-07-31T13:49:53.94
FR.SAOF.HHN.00 ML:2.0 0.00028500000000000004 0.32 AML other m 2022-07-31T13:50:00.62
FR.SAOF.HHE.00 ML:2.0 0.00032399999999999996 0.24 AML other m 2022-07-31T13:50:00.95
GU.MGRO.HHN. ML:1.9 0.000221 0.16 AML other m 2022-07-31T13:50:01.33
GU.MGRO.HHE. ML:2.0 0.0002965 1.64 AML other m 2022-07-31T13:50:02.03
GU.GBOS.HHN. ML:1.5 0.00006085 1.16 AML other m 2022-07-31T13:50:07.80
GU.GBOS.HHE. ML:2.0 0.00015350000000000002 0.4 AML other m 2022-07-31T13:50:07.30
GU.ENR.HHE. ML:2.0 0.00015784275 0.3392 AML other m 2022-07-31T13:50:08.17
GU.STV.HHN. ML:1.6 0.000063839915 0.2176 AML other m 2022-07-31T13:50:08.34
GU.ENR.HHN. ML:2.0 0.00015 0.84 AML other m 2022-07-31T13:50:08.61
GU.STV.HHE. ML:2.0 0.00014399999999999998 0.3 AML other m 2022-07-31T13:50:09.17
GU.CANO.HHN. ML:2.3 0.00028100000000000005 0.4 AML other m 2022-07-31T13:50:09.34
GU.CANO.HHE. ML:2.2 0.00024349999999999998 1.16 AML other m 2022-07-31T13:50:09.85
IV.QLNO.HHN. ML:2.1 0.00013450000000000002 0.3 AML other m 2022-07-31T13:50:13.77
IV.QLNO.HHE. ML:1.8 0.0000767 0.54 AML other m 2022-07-31T13:50:14.49
GU.PZZ.HHN. ML:2.0 0.00008945 0.44 AML other m 2022-07-31T13:50:18.94
GU.PZZ.HHE. ML:1.8 0.000049366905000000004 0.1984 AML other m 2022-07-31T13:50:20.50
GU.PCP.HHE. ML:1.8 0.000049699999999999995 1.48 AML other m 2022-07-31T13:50:22.24
GU.PCP.HHN. ML:1.7 0.00003305 0.56 AML other m 2022-07-31T13:50:22.66
GU.BHB.HHN. ML:1.6 0.00002695 1.16 AML other m 2022-07-31T13:50:26.97
GU.BHB.HHE. ML:1.7 0.000030550000000000004 0.28 AML other m 2022-07-31T13:50:26.35
GU.RSP.HHE. ML:2.4 0.00010159999999999999 1.3 AML other m 2022-07-31T13:50:59.82
GU.RSP.HHN. ML:2.2 0.000060450000000000006 0.84 AML other m 2022-07-31T13:51:02.22
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download