Earthquake with magnitude of ML 1.6 on date 28-04-2021 and time 14:46:09 (UTC) in region 3 km N Albareto (PR)

A magnitude ML 1.6 earthquake occured in region: 3 km N Albareto (PR), on

  • 28-04-2021 14:46:09 (UTC)
  • 28-04-2021 16:46:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.47, 9.694 at 9 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
Albareto PR 3 2156 2156
Compiano PR 4 1112 3268
Tornolo PR 6 1010 4278
Bedonia PR 6 3482 7760
Borgo Val di Taro PR 6 6999 14759
Varese Ligure SP 13 2059 16818
Zeri MS 14 1094 17912
Pontremoli MS 18 7357 25269
Bardi PR 19 2227 27496
Valmozzola PR 19 539 28035
Maissana SP 19 616 28651
Sesta Godano SP 20 1377 30028

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km N of La Spezia (93959 inhabitants)
54 Km NW of Carrara (63133 inhabitants)
60 Km NW of Massa (69479 inhabitants)
61 Km E of Genova (586655 inhabitants)
62 Km SW of Parma (192836 inhabitants)
65 Km S of Piacenza (102191 inhabitants)
78 Km SW of Cremona (71901 inhabitants)
78 Km W of Reggio nell'Emilia (171345 inhabitants)
80 Km NW of Viareggio (62467 inhabitants)
90 Km SE of Pavia (72576 inhabitants)
95 Km NW of Lucca (89046 inhabitants)
98 Km E of Savona (61345 inhabitants)
99 Km E of Alessandria (93943 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 1.6 2021-04-28
14:46:09
44.4697 9.6945 9 2021-07-12
16:55:14
Bollettino Sismico Italiano INGV 90902381
Reviewed
Rev100
ML 1.6 2021-04-28
14:46:09
44.47 9.6825 9 2021-04-28
14:55:21
Sala Sismica INGV-Roma 89558351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-28 14:46:09 ± 0.11
Latitude 44.4697 ± 0.0072
Longitude 9.6945 ± 0.0063
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90902381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 591
Semi-minor axis of confidence ellipse (meter) 519
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) 590
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.19875
Epicentral distance of station farthest from the epicenter (degree) 1.07379
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 90902381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-14 16:32:59

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 89558351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-28 14:55:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.CANO.HHZ. 2021-04-28T14:46:30.72 0.3 undecidable manual P 256 1.0738 50 1.01 46
IV.PII.HHZ. 2021-04-28T14:46:27.72 0.6 undecidable manual P 141 0.956 50 0.03 43
GU.EQUI.HHZ. 2021-04-28T14:46:25.35 0.6 undecidable manual S 133 0.447 50 -0.47 44
IV.BOB.HHE. 2021-04-28T14:46:22.90 0.6 undecidable manual S 330 0.3462 50 0.06 49
GU.SARM.EHN. 2021-04-28T14:46:21.45 0.6 undecidable manual P 119 0.5801 50 0.19 45
GU.GORR.HHZ. 2021-04-28T14:46:21.80 0.6 undecidable manual S 296 0.3175 50 -0.2 48
GU.RNCA.HHE. 2021-04-28T14:46:20.57 0.6 undecidable manual P 270 0.5297 50 0.17 46
GU.GRAM.HHZ. 2021-04-28T14:46:20.10 0.3 undecidable manual S 85 0.2653 107 -0.17 73
GU.FIVI.HNE. 2021-04-28T14:46:18.09 0.3 undecidable manual P 127 0.3849 50 0.16 71
GU.EQUI.HHZ. 2021-04-28T14:46:18.97 0.1 undecidable manual P 133 0.447 50 -0.01 96
IV.PLMA.HHZ. 2021-04-28T14:46:18.77 0.3 undecidable manual P 165 0.4344 50 0 73
IV.MSSA.HHZ. 2021-04-28T14:46:17.60 0.3 undecidable manual S 220 0.1988 112 -0.25 72
IV.BOB.HHE. 2021-04-28T14:46:17.14 0.3 undecidable manual P 330 0.3462 50 -0.11 72
GU.GORR.HHZ. 2021-04-28T14:46:16.26 0.3 undecidable manual P 296 0.3175 50 -0.51 67
GU.GRAM.HHZ. 2021-04-28T14:46:15.97 0.1 undecidable manual P 85 0.2653 107 0.2 96
IV.MSSA.HHZ. 2021-04-28T14:46:14.45 0.1 undecidable manual P 220 0.1988 112 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MSSA.HHN. ML:2.7 0.0032741545 0.1024 AML other m 2021-04-28T14:46:18.06
IV.MSSA.HHE. ML:2.8 0.0039 0.1 AML other m 2021-04-28T14:46:18.21
GU.GRAM.HHE. ML:1.9 0.0003861065 0.2176 AML other m 2021-04-28T14:46:21.31
GU.GORR.HHN. ML:1.4 0.000113338275 0.1984 AML other m 2021-04-28T14:46:22.61
GU.GORR.HHE. ML:1.4 8.912001E-5 0.1408 AML other m 2021-04-28T14:46:22.60
GU.GRAM.HHN. ML:1.8 0.0003135 0.44 AML other m 2021-04-28T14:46:23.52
GU.EQUI.HHE. ML:1 3.239057E-5 0.2048 AML other m 2021-04-28T14:46:26.71
IV.PLMA.HHE. ML:1.5 9.27E-5 0.16 AML other m 2021-04-28T14:46:26.81
GU.EQUI.HHN. ML:0.9 2.235E-5 0.92 AML other m 2021-04-28T14:46:28.39
IV.PLMA.HHN. ML:1.4 6.605702E-5 0.2368 AML other m 2021-04-28T14:46:30.44
IV.PII.HHE. ML:1.8 5.9627415E-5 0.2816 AML other m 2021-04-28T14:46:43.35
IV.PII.HHN. ML:1.7 4.5057275E-5 0.2816 AML other m 2021-04-28T14:46:43.80
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