Earthquake with magnitude of ML 1.4 on date 30-07-2021 and time 08:09:11 (Italy) in region 4 km N Rezzoaglio (GE)

A magnitude ML 1.4 earthquake occured in region: 4 km N Rezzoaglio (GE), on

  • 30-07-2021 06:09:11 (UTC)
  • 30-07-2021 08:09:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.56, 9.394 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
Rezzoaglio GE 4 995 995
Santo Stefano d'Aveto GE 5 1126 2121
Fontanigorda GE 7 277 2398
Ottone PC 9 516 2914
Rovegno GE 9 554 3468
Gorreto GE 10 97 3565
Montebruno GE 12 240 3805
Fascia GE 12 81 3886
Ferriere PC 13 1294 5180
Cerignale PC 14 127 5307
Rondanina GE 14 62 5369
Zerba PC 15 77 5446
Borzonasca GE 15 2049 7495
Favale di Malvaro GE 16 466 7961
Propata GE 17 142 8103
Lorsica GE 17 468 8571
Corte Brugnatella PC 17 586 9157
Carrega Ligure AL 19 84 9241
Torriglia GE 19 2311 11552
Orero GE 19 565 12117
Mezzanego GE 20 1537 13654
Neirone GE 20 916 14570
Bedonia PR 20 3482 18052

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Genova (586655 inhabitants)
60 Km SW of Piacenza (102191 inhabitants)
61 Km NW of La Spezia (93959 inhabitants)
72 Km S of Pavia (72576 inhabitants)
73 Km SE of Alessandria (93943 inhabitants)
78 Km NW of Carrara (63133 inhabitants)
78 Km E of Savona (61345 inhabitants)
79 Km W of Parma (192836 inhabitants)
81 Km SW of Cremona (71901 inhabitants)
83 Km NW of Massa (69479 inhabitants)
94 Km SE of Vigevano (63310 inhabitants)
99 Km W of Reggio nell'Emilia (171345 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.4 2021-07-30
06:09:11
44.5602 9.3942 10 2021-07-30
06:19:32
Sala Sismica INGV-Roma 93387981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-30 06:09:11 ± 0.12
Latitude 44.5602 ± 0.0108
Longitude 9.3942 ± 0.0114
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 93387981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1105
Semi-minor axis of confidence ellipse (meter) 859
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 356
Circular confidence region, given by single value of horizontal uncertainty (meter) 1100
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.60704
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 93387981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-30 06:19:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TDS.HHZ. 2021-07-30T06:10:56.19 3.0 undecidable manual Pn 4.28 0
IV.CDRU.HHZ. 2021-07-30T06:10:38.14 3.0 undecidable manual Pn 1.99 0
IV.GUMA.HHZ. 2021-07-30T06:10:34.95 3.0 undecidable manual Sn -2.94 0
IV.PESA.HHZ. 2021-07-30T06:10:28.88 3.0 undecidable manual Sg 10.14 0
GU.LSD.HHZ. 2021-07-30T06:10:09.73 3.0 undecidable manual Sg 6.19 0
IV.MF5.EHZ. 2021-07-30T06:10:01.93 3.0 undecidable manual Pn 3.44 0
IV.ARRO.EHZ. 2021-07-30T06:09:59.59 3.0 undecidable manual Pn 2.28 0
IV.PP3.EHZ. 2021-07-30T06:09:58.58 3.0 positive manual Pn 1.97 0
IV.FIU.EHZ. 2021-07-30T06:09:48.89 3.0 undecidable manual Sg -1.33 0
MN.BNI.HHZ. 2021-07-30T06:09:47.90 3.0 negative manual Pg 6.44 0
GU.PZZ.HHZ. 2021-07-30T06:09:42.87 3.0 undecidable manual Pg 4.49 0
GU.LSD.HHZ. 2021-07-30T06:09:40.52 3.0 undecidable manual Pg 2.95 0
IV.NDIM.HNZ. 2021-07-30T06:09:34.61 3.0 undecidable manual Sg -1.73 0
IV.CAPR.HNZ. 2021-07-30T06:09:24.04 3.0 undecidable manual Sg -4.27 0
GU.RNCA.HHZ. 2021-07-30T06:09:23.47 0.1 undecidable manual S 254 0.3283 50 -0.02 98
IV.PLMA.HHE. 2021-07-30T06:09:23.60 0.1 undecidable manual P 147 0.607 50 0.61 80
IV.VOBA.EHZ. 2021-07-30T06:09:21.14 3.0 undecidable manual Pg -0.42 0
IV.MSSA.HHZ. 2021-07-30T06:09:21.12 0.1 undecidable manual S 160 0.259 50 -0.33 93
IV.BOB.HNE. 2021-07-30T06:09:19.68 0.1 undecidable manual S 10 0.2113 112 -0.14 98
GU.RNCA.HHZ. 2021-07-30T06:09:18.29 0.1 undecidable manual P 254 0.3283 50 0.07 97
IV.BOB.HNE. 2021-07-30T06:09:16.15 0.1 undecidable manual P 10 0.2113 112 0.05 99
IV.MSSA.HHZ. 2021-07-30T06:09:16.85 0.1 negative manual P 160 0.259 50 -0.19 96
IV.ZONE.HHZ. 2021-07-30T06:09:16.30 3.0 undecidable manual P -4.45 0
GU.GORR.HHZ. 2021-07-30T06:09:15.61 0.1 undecidable manual S 303 0.0863 135 -0.14 100
GU.GORR.HHZ. 2021-07-30T06:09:13.91 0.1 undecidable manual P 303 0.0863 135 0.17 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GORR.HHN. ML:1 0.000142 0.44 AML other m 2021-07-30T06:09:15.76
GU.GORR.HHE. ML:1.1 0.000167 1.88 AML other m 2021-07-30T06:09:15.04
IV.MSSA.HHN. ML:1.6 0.000225 0.1 AML other m 2021-07-30T06:09:21.68
IV.MSSA.HHE. ML:1.6 0.0002205 1.2 AML other m 2021-07-30T06:09:22.18
GU.RNCA.HHN. ML:1.1 4.7E-5 0.12 AML other m 2021-07-30T06:09:24.31
GU.RNCA.HHE. ML:1.3 7.44E-5 0.12 AML other m 2021-07-30T06:09:24.31
IV.SARZ.HNN. ML:2.3 0.000514 0.68 AML other m 2021-07-30T06:09:30.56
IV.SARZ.HHN. ML:2.3 0.0004805 0.22 AML other m 2021-07-30T06:09:30.66
IV.SARZ.HHE. ML:2.3 0.0005405 0.24 AML other m 2021-07-30T06:09:30.82
IV.SARZ.HNE. ML:2.3 0.0005065 0.24 AML other m 2021-07-30T06:09:30.70
IV.ZONE.HHE. ML:2.1 7.29E-5 1.7 AML other m 2021-07-30T06:09:38.01
IV.ZONE.HHN. ML:2.1 7.28E-5 0.76 AML other m 2021-07-30T06:09:38.44
IV.NDIM.HNE. ML:3.4 0.001655 1.78 AML other m 2021-07-30T06:09:40.03
IV.NDIM.HHN. ML:3.4 0.001655 0.26 AML other m 2021-07-30T06:09:40.23
IV.NDIM.HNN. ML:3.6 0.002755 0.24 AML other m 2021-07-30T06:09:40.36
IV.NDIM.HHE. ML:3.4 0.00178 0.42 AML other m 2021-07-30T06:09:40.47
GU.PZZ.HHE. ML:1.8 2.405E-5 0.14 AML other m 2021-07-30T06:09:55.73
IV.PESA.HHN. ML:3.4 0.000324 0.8 AML other m 2021-07-30T06:10:06.51
IV.ARRO.EHN. ML:2.7 3.945E-5 0.18 AML other m 2021-07-30T06:10:17.12
GU.LSD.HHN. ML:2.5 8.575E-5 0.06 AML other m 2021-07-30T06:10:18.15
GU.LSD.HHE. ML:2.2 5.04E-5 0.56 AML other m 2021-07-30T06:10:18.20
GU.PZZ.HHN. ML:1.6 1.4765E-5 0.8 AML other m 2021-07-30T06:10:25.63
IV.ARRO.EHE. ML:3 7.625E-5 0.06 AML other m 2021-07-30T06:10:28.58
IV.PESA.HHE. ML:3.4 0.000391 0.44 AML other m 2021-07-30T06:10:30.73
IV.MF5.EHN. ML:2.7 3.475E-5 0.42 AML other m 2021-07-30T06:10:41.84
IV.MF5.EHE. ML:2.7 3.825E-5 1.58 AML other m 2021-07-30T06:11:13.90
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